0L[HG6LJQDO&LUFXLWVDQG6\VWHPV 0RGHP7HFKQLTXHV. The Modem as an example of a mixed signal system

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "0L[HG6LJQDO&LUFXLWVDQG6\VWHPV 0RGHP7HFKQLTXHV. The Modem as an example of a mixed signal system"

Transcription

1 0L[HG6LJQDO&LUFXLWVDQG6\VWHPV 0RGHP7HFKQLTXHV The Modem as an example of a mixed signal system Mixed Signal Circuits and Systems, A.J.M. van Tuijl, IC Ontwerpkunde, sheet 8.1

2 ['6/[[['LJLWDO6XEVFULEHU/LQH2YHUYLHZ High speed modem techniques for wired telephone connection High speed modems, CAP and DMT DMT for ADSL (Asymmetrical Digital Subscriber Line) Advantages of DMT over QAM and CAP Main functions in digital processing Circuit parts in the Analog Front End G.lite, the low cost implementation of xdsl Mixed Signal Circuits and Systems, A.J.M. van Tuijl, IC Ontwerpkunde, sheet 8.2

3 +LJKVSHHGPRGHPV&$3DQG'07 Modems with data streams of more than 128 kbit/s do not make use of the standard 64 kbit/s channels that are used for voice and ISDN High speed modems are connected to dedicated modems in the Central Office that are directly linked to the digital network Two types of modulation are used now, CAP (Carrierless Amplitude Phase modulation) and DMT (Discrete Multi Tone modulation) In CAP amplitude and phase are modulated around a (suppressed) high frequency carrier with a high symbol rate. The digital data is mapped on a discrete number of amplitude and phase steps In DMT the digital data are distributed over a high number (typically 128 to 256) carriers. The symbol rate per carrier is low (4 kbaud) and the number of bits per symbol can be 15 in the most advanced systems. Mixed Signal Circuits and Systems, A.J.M. van Tuijl, IC Ontwerpkunde, sheet 8.3

4 '07IRU$'6/$V\PPHWULFDO'LJLWDO6XEVFULEHU/LQH 255 subcarriers, spacing khz, 0 to Mhz Symbol rate per carrier 4 khz, modulation between 0 and 15 bit per symbol Maximum bitrate per carrier is 15 * 4k = 60 kbit/s. QAM modulation, maximal 8 bit resolution (256 amplitude levels) on I vector and 7 bit resolution on Q vector ADSL combined with POTS, first subcarrier in use on khz ADSL mostly not used in duplex, lower frequencies for upstream data, higher frequencies for downstream data (Frequency Division) Carrier 6 to 31 are used for upstream, carrier 16 is used for reference, carrier 32 on nyquist frequency is not used for data 25 carriers available for upstream, maximum theoretical bitrate of 25 * 60 kbit = 1.5 Mbit, practical values between 64 and 640 kbit Mixed Signal Circuits and Systems, A.J.M. van Tuijl, IC Ontwerpkunde, sheet 8.4

5 '07IRU$'6/FRQWLQXHG '070RGXODWLRQ LPF HPF P OTS DMT 4k 26k subcarrier spacing 1.1M Hz Mixed Signal Circuits and Systems, A.J.M. van Tuijl, IC Ontwerpkunde, sheet 8.5

6 '07IRU$'6/FRQWLQXHG (FKR&DQFHOODWLRQ )UHTXHQF\'LYLVLRQPXOWLSOH[LQJ POTS upstream POTS upstream downstream downstream Mixed Signal Circuits and Systems, A.J.M. van Tuijl, IC Ontwerpkunde, sheet 8.6

7 '07IRU$'6/FRQWLQXHG 615IRU%(5 Bits/symbol QAM constellation size Required SNR QAM constellation: 4 bits: 2 bit I and 2 bit Q 2(1,1) 4 (QPSK) 14.5 db 3(1,2) 8 19,3 db 4(2,2) 16 21,5 db 5(2,3) db 6(3,3) db 7(3,4) db 8(4,4) db 10(5,5) db 12(6,6) db 15(7,8) ,8 db QAM constellation: 6 bits: 3 bit I and 3 bit Q Mixed Signal Circuits and Systems, A.J.M. van Tuijl, IC Ontwerpkunde, sheet 8.7

8 '07IRU$'6/FRQWLQXHG Carrier 33 to 255 are used for downstream, carrier 128 is used for reference, carrier 256 on nyquist frequency is not used for data 222 carriers available for downstream, maximum theoretical bitrate of 222 * 60 kbit = Mbit, practical values between 4 and 8 Mbit Line conditions tested during start-up, bitrate per carrier adjusted In operation BER per carrier monitored, bits are shifted to other carriers if needed Signal levels for POTS in dbm/600ω, for ADSL in dbm/100ω Maximum signal level in Central Office is 20.4 dbm (3.31 Volt RMS, noiselike signal, peak to peak voltage is about 33 Volt) Max. signal Remote Terminal 12.5 dbm. (1.33 Volt RMS, peak to peak voltage about 13 Volt) Mixed Signal Circuits and Systems, A.J.M. van Tuijl, IC Ontwerpkunde, sheet 8.8

9 '07IRU$'6/FRQWLQXHG Channel Response RFI Bridged Tap Crosstalk Mixed Signal Circuits and Systems, A.J.M. van Tuijl, IC Ontwerpkunde, sheet 8.9

10 '07IRU$'6/FRQWLQXHG Bits Attenuation Bits Frequency Frequency Frequency Mixed Signal Circuits and Systems, A.J.M. van Tuijl, IC Ontwerpkunde, sheet 8.10

11 $GYDQWDJHVRI'07RYHU4$0DQG&$3 DMT Discrete Multi Tone CAP Carrierless Amplitude Phase modulation QAM Quadrature Amplitude Modulation QAM and CAP mainly differ in the way they are generated: CAP is in nature an analog quadrature implementation with a sine/cosine mixer QAM is suited for time discrete digital implementation QAM and CAP have a high symbol rate on one carrier and therefore a wide side-band spectrum DMT has a low sybol rate (only 4k) and many carriers. Therefore is not very sensitive to spiky noise and RF interference. It can adapt easily to line conditions Mixed Signal Circuits and Systems, A.J.M. van Tuijl, IC Ontwerpkunde, sheet 8.11

12 6LJQDOFRGLQJLQWKHWUDQVPLWWHU Each 0.25 ms (4 khz) a data frame is build taking data out of the elastic buffer After CRC encoding, scrambling, Reed Solomon encoding and interleaving, data frames are prepared for transmission Tone ordering gives 256 complex vectors in the frequency domain (nr. of bits per tone and gain scaling depends on line conditions, the digital data are mapped on the QAM constellation) With a 512 point IFFT a symbol of 512 time domain samples is created The symbol of 512 samples is filled up with a 32 samples long cyclic prefix After 68 data symbols a synchronization symbol with a nominal length of 544 samples is added making a superframe of 17 ms Samplerate is 544 * 69/17ms = Msamples/s = 256 * ksamples/s The Msamples/s output signal can be bandlimited in MHz analog frquency band. An oversampled DA is preferred for smooth interpolation Mixed Signal Circuits and Systems, A.J.M. van Tuijl, IC Ontwerpkunde, sheet 8.12

13 0DLQIXQFWLRQVLQGLJLWDOSURFHVVLQJUHFHLYHU In the receiver most digital operations are reverse to the operations in the transmitter. A function that is unique for the receiver is the time equalization which is necessary to compensate for the dispersion and reflection in the line: The telephone line (local loop) is at most 5.5 km long Propagation delay is about 30 µs with a dispersion of a few µs. The sampling must be synchronized to the MHz sample frequency of the transmitter MHz is commonly used as frequency in the DSP Each symbol consists of 512 samples plus the 32 samples cyclic prefix. This prefix is needed to avoid intersymbol interference or leakage Leakage between symbols can originate from the different delays for different frequencies in the band from 0 to MHz A 160 tap adaptive FIR filter on MHz (36 µs) is used for equalization Mixed Signal Circuits and Systems, A.J.M. van Tuijl, IC Ontwerpkunde, sheet 8.13

14 :KDWGRHV$'6/ORRNOLNHLQWKHWLPHDQGIUHTXHQF\GRPDLQ I I I Carrier 2 Mixed Signal Circuits and Systems, A.J.M. van Tuijl, IC Ontwerpkunde, sheet 8.14

15 $'6/LQWKHWLPHGRPDLQ Each symbol consist of 512 samples in the time domain that represents the summation of the 256 carrier signals and 32 cyclic prefix samples Carrier n (on n * khz) is exactly n periods long in the time period of 512 samples Leakage from other symbols is avoided by the cyclic prefix (guardband) of 32 samples When a FFT over 512 samples is executed some energy of the cyclic prefix may leak into the frequency domain, giving only a small noise like addition to the frequency spectrum Complex frequency vectors can be recovered with almost no leakage. Amplitude and phase of the vectors must be corrected for equalization and dispersion Mixed Signal Circuits and Systems, A.J.M. van Tuijl, IC Ontwerpkunde, sheet 8.15

16 &KDUDFWHULVWLFRIWKH$'6/VLJQDO DMT is a multi carrier technique: Distortion of one carrier is unwanted signal in another carrier For the maximum resolution of 15 bits/symbol and a BER = 10-7, a SNR of 55 db is needed on one carrier (maximum V pp = 1 or V RMS = 0.35) Mean carrier amplitude is V RMS,mean = 0.58 * 0.35 = 0.20 About 250 carriers contribute to the total power resulting in a RMS amplitude value of = for the ADSL signal Clipping must be less then 10-7 so the peak amplitude is about 5 times higher than the RMS value resulting in 9 = = ,max The (white) noise over the full 1.1 MHz bandwidth must be lower then 55G% + 10log 256 = 31G% relative to V pp = 1 Maximum amplitude 32.3 = 30 db, so the minimum S/N ratio is 61 db All components in the analog chain must have noise and distortion much lower than -61 db Mixed Signal Circuits and Systems, A.J.M. van Tuijl, IC Ontwerpkunde, sheet 8.16

17 &LUFXLWSDUWVLQWKH$QDORJ)URQW(QG There are many circuits parts in the total signal chain: DA converter Transmitter Splitter filter Transformer and hybrid 7HOHSKRQHOLQH Transformer and hybrid Splitter filter Receiver and gain control AD converter To maintain optimum signal quality all components in the chain must have a THD plus noise much lower than -70 db. The SINAD of the convertors must be 12 to 13 bit Mixed Signal Circuits and Systems, A.J.M. van Tuijl, IC Ontwerpkunde, sheet 8.17

18 *OLWHWKHORZFRVWLPSOHPHQWDWLRQRI['6/ G.lite is named to the ITU specification for a xdsl protocol that compared to ADSL has: Low cost but still offering up to 128 kbit upstream and 1.5 Mbit downstream Better compatability to POTS, no splitter filter needed Suitable as a very fast PC telephone line modem that can compete with cable modems G.lite is also a DMT technique with: 127 carriers covering a frequency band from 0 to 552 khz A constellation diagram 8 (4,4) with a maximum size of 256 Level adaption to prevent distortion on the line and interference with POTS Mixed Signal Circuits and Systems, A.J.M. van Tuijl, IC Ontwerpkunde, sheet 8.18

19 &KDUDFWHULVWLFRIWKH*OLWH$)(DWVXEVFULEHUVLWH For the maximum resolution of 8 bits/symbol and a BER = 10-7, a SNR of 34 db is needed on one carrier (maximum V pp = 1 or V RMS = 0.35) Mean carrier amplitude is V RMS,mean = 0.58 * 0.35 = 0.20 About 125 carriers contribute to the total power resulting in a RMS amplitude value of = for the ADSL signal Clipping must be less then 10-7 so the peak amplitude is about 5 times higher than the RMS value resulting in 9 = = ,max The (white) noise over the full 1.1 MHz bandwidth must be lower then 34G% + 10 log(128) = 13G% relative to V pp = 1 Maximum amplitude 22.8 = 27 db, so the minimum S/N ratio is 40 db All components in the analog chain must have noise and distortion much lower than 40 db Mixed Signal Circuits and Systems, A.J.M. van Tuijl, IC Ontwerpkunde, sheet 8.19

Public Switched Telephone System

Public Switched Telephone System Public Switched Telephone System Structure of the Telephone System The Local Loop: Modems, ADSL Structure of the Telephone System (a) Fully-interconnected network. (b) Centralized switch. (c) Two-level

More information

Original Lecture Notes developed by

Original Lecture Notes developed by Introduction to ADSL Modems Original Lecture Notes developed by Prof. Brian L. Evans Dept. of Electrical and Comp. Eng. The University of Texas at Austin http://signal.ece.utexas.edu Outline Broadband

More information

www.zte.com.cn VDSL2 A feasible Solution for Last Mile

www.zte.com.cn VDSL2 A feasible Solution for Last Mile www.zte.com.cn VDSL2 A feasible Solution for Last Mile Version Date Author Approved By Remarks V1.00 009-08-8 MichaelSong Not open to the Third Party 009 ZTE Corporation. All rights reserved. ZTE CONFIDENTIAL:

More information

Digital Subscriber Line (DSL) Transmission Methods

Digital Subscriber Line (DSL) Transmission Methods Digital Subscriber Line (DSL) Transmission Methods 1. Overview... 1 2. SHDSL Transmission Methods... 1 SHDSL Transmission System Versions... 1 SHDSL Transmission Subsystem Structure... 1 SHDSL Modulation

More information

TELECOMMUNICATIONS STANDARDS ADVISORY COMMITTEE WORKING GROUP ON COMMON CONNECTION STANDARDS (CCS)

TELECOMMUNICATIONS STANDARDS ADVISORY COMMITTEE WORKING GROUP ON COMMON CONNECTION STANDARDS (CCS) TELECOMMUNICATIONS STANDARDS ADVISORY COMMITTEE WORKING GROUP ON COMMON CONNECTION STANDARDS (CCS) Overview of Very High Speed Digital Subscriber Line 2 (VDSL2) 甚 高 速 數 碼 用 戶 線 路 2 的 概 覽 Introduction ADSL

More information

ADSL / VDSL Technologies

ADSL / VDSL Technologies Chapter 3 ADSL / VDSL Technologies Both ADSL and VDSL are designed to operate on a subscriber s existing twisted copper access pair terminating at a Local Exchange Building (LEX) in conjunction with the

More information

RADIO FREQUENCY INTERFERENCE AND CAPACITY REDUCTION IN DSL

RADIO FREQUENCY INTERFERENCE AND CAPACITY REDUCTION IN DSL RADIO FREQUENCY INTERFERENCE AND CAPACITY REDUCTION IN DSL Padmabala Venugopal, Michael J. Carter*, Scott A. Valcourt, InterOperability Laboratory, Technology Drive Suite, University of New Hampshire,

More information

Evaluation Criteria for ADSL AFE1302

Evaluation Criteria for ADSL AFE1302 Application Report SBAA095 - August 2003 Evaluation Criteria for ADSL AFE1302 John Z. Wu and CR Teeple High Speed Products Marketing ABSTRACT This paper describes several important asymmetrical digital

More information

ADSL Line Driver/Receiver Design Guide, Part 1

ADSL Line Driver/Receiver Design Guide, Part 1 ADSL Line Driver/Receiver Design Guide, Part 1 Introduction Consumer desire for faster Internet access is driving the demand for very high data rate modems. A digital subscriber line (DSL) implementation

More information

Black Box Explains: DSL

Black Box Explains: DSL Black Box Explains: DSL History It was realized as early as the late eighties, early nineties, that conventional data transmission systems did not meet the requirements of the growing internet community

More information

Evolution from Voiceband to Broadband Internet Access

Evolution from Voiceband to Broadband Internet Access Evolution from Voiceband to Broadband Internet Access Murtaza Ali DSPS R&D Center Texas Instruments Abstract With the growth of Internet, demand for high bit rate Internet access is growing. Even though

More information

Chapter 9 Using Telephone and Cable Networks for Data Transmission

Chapter 9 Using Telephone and Cable Networks for Data Transmission 9-11 TELEPHONE NETWORK Chapter 9 Using Telephone and Cable Networks for Data Transmission 1 McGraw-Hill Copyright The McGraw-Hill Companies, Inc. Permission required The for reproduction McGraw-Hill or

More information

Next Generation of High Speed. Modems8

Next Generation of High Speed. Modems8 Next Generation of High Speed Modems High Speed Modems. 1 Traditional Modems Assume both ends have Analog connection Analog signals are converted to Digital and back again. Limits transmission speed to

More information

ADSL TUTORIAL. Figure 1: Typical DSL system.

ADSL TUTORIAL. Figure 1: Typical DSL system. ADSL TUTORIAL Matthew J. Langlois, University of New Hampshire InterOperability Laboratory 121 Technology Drive, Suite 2, Durham, NH 03824 USA. Extracted from the Introduction and Chapter 1 of A G.hs Handshaking

More information

COMMITTEE T1 TELECOMMUNICATIONS Working Group T1E1.4 (DSL Access) Arlington, VA; April 20, 1999

COMMITTEE T1 TELECOMMUNICATIONS Working Group T1E1.4 (DSL Access) Arlington, VA; April 20, 1999 COMMITTEE T1 TELECOMMUNICATIONS Working Group T1E1.4 (DSL Access) Arlington, VA; April 20, 1999 T1E1.4/99-204 CONTRIBUTION TITLE: SOURCE: AUTHOR(S): PROJECT: Measured Spectral Compatibility of T1.413 FDD

More information

Broadband 101: Installation and Testing

Broadband 101: Installation and Testing Broadband 101: Installation and Testing Fanny Mlinarsky Introduction Today the Internet is an information superhighway with bottlenecks at every exit. These congested exits call for the deployment of broadband

More information

Module: Digital Communications. Experiment 784. DSL Transmission. Institut für Nachrichtentechnik E-8 Technische Universität Hamburg-Harburg

Module: Digital Communications. Experiment 784. DSL Transmission. Institut für Nachrichtentechnik E-8 Technische Universität Hamburg-Harburg Module: Digital Communications Experiment 784 DSL Transmission Institut für Nachrichtentechnik E-8 Technische Universität Hamburg-Harburg ii Table of Contents Introduction... 1 1 The DSL System... 2 1.1

More information

An Analysis of Speed Drop in ADSL Lines in Sri Lanka

An Analysis of Speed Drop in ADSL Lines in Sri Lanka An Analysis of Speed Drop in ADSL Lines in Sri Lanka CPSY Dalpathadu # and PN Karunanayaka General Sir John Kotelawala Defence University, Ratmalana, Sri Lanka # sach.yamani@gmail.com Abstract: This paper

More information

HD Radio FM Transmission System Specifications

HD Radio FM Transmission System Specifications HD Radio FM Transmission System Specifications Rev. E January 30, 2008 Doc. No. SY_SSS_1026s TRADEMARKS The ibiquity Digital logo and ibiquity Digital are registered trademarks of ibiquity Digital Corporation.

More information

Department of Electrical and Computer Engineering Ben-Gurion University of the Negev. LAB 1 - Introduction to USRP

Department of Electrical and Computer Engineering Ben-Gurion University of the Negev. LAB 1 - Introduction to USRP Department of Electrical and Computer Engineering Ben-Gurion University of the Negev LAB 1 - Introduction to USRP - 1-1 Introduction In this lab you will use software reconfigurable RF hardware from National

More information

Data Transmission. Data Communications Model. CSE 3461 / 5461: Computer Networking & Internet Technologies. Presentation B

Data Transmission. Data Communications Model. CSE 3461 / 5461: Computer Networking & Internet Technologies. Presentation B CSE 3461 / 5461: Computer Networking & Internet Technologies Data Transmission Presentation B Kannan Srinivasan 08/30/2012 Data Communications Model Figure 1.2 Studying Assignment: 3.1-3.4, 4.1 Presentation

More information

(Refer Slide Time: 2:10)

(Refer Slide Time: 2:10) Data Communications Prof. A. Pal Department of Computer Science & Engineering Indian Institute of Technology, Kharagpur Lecture-12 Multiplexer Applications-1 Hello and welcome to today s lecture on multiplexer

More information

Intel System Engineers Documents. DSL General Overview

Intel System Engineers Documents. DSL General Overview Intel System Engineers Documents DSL General Overview Alex Lattanzi SC LAR Whatt IIs Brroadband? Broadband describes a number of different technologies that deliver digital data to homes and businesses

More information

1. (Ungraded) A noiseless 2-kHz channel is sampled every 5 ms. What is the maximum data rate?

1. (Ungraded) A noiseless 2-kHz channel is sampled every 5 ms. What is the maximum data rate? Homework 2 Solution Guidelines CSC 401, Fall, 2011 1. (Ungraded) A noiseless 2-kHz channel is sampled every 5 ms. What is the maximum data rate? 1. In this problem, the channel being sampled gives us the

More information

xdsl Technology and Applications:

xdsl Technology and Applications: xdsl Technology and Applications: Removing the Telephone Line Bottleneck Krista S. Jacobsen Texas Instruments Broadband Access Group jacobsen@ti.com Texas Instruments 1999 1 Overview/Goals Introduction

More information

COMMITTEE T1 TELECOMMUNICATIONS Working Group T1E1.4 (DSL Access) Ottawa, Canada; June 7, 1999

COMMITTEE T1 TELECOMMUNICATIONS Working Group T1E1.4 (DSL Access) Ottawa, Canada; June 7, 1999 COMMITTEE T1 TELECOMMUNICATIONS Working Group T1E1.4 (DSL Access) Ottawa, Canada; June 7, 1999 T1E1.4/99-261 CONTRIBUTION TITLE: SOURCE: PROJECT: Regarding the Spectral Compatibility of 2B1Q SDSL Telcordia

More information

DSL: An Overview. By M. V. Ramana Murthy. All Rights Reserved

DSL: An Overview. By M. V. Ramana Murthy. All Rights Reserved By M. V. Ramana Murthy All Rights Reserved COPYRIGHT: This document is a property of MultiTech Software Systems India Pvt. Ltd. No part of this document may be copied or reproduced in any form or by any

More information

Time and Frequency Domain Equalization

Time and Frequency Domain Equalization Time and Frequency Domain Equalization Presented By: Khaled Shawky Hassan Under Supervision of: Prof. Werner Henkel Introduction to Equalization Non-ideal analog-media such as telephone cables and radio

More information

ITU-T xdsl Standards Study Group 15 Question 4

ITU-T xdsl Standards Study Group 15 Question 4 International Telecommunication Union ITU-T xdsl Standards Study Group 15 Question 4 Stephen Palm Ph.D. Principal Engineer Broadcom palm @ broadcom. com ITU-T Workshop All Star Network Access Geneva, 2-4

More information

HD Radio FM Transmission System Specifications Rev. F August 24, 2011

HD Radio FM Transmission System Specifications Rev. F August 24, 2011 HD Radio FM Transmission System Specifications Rev. F August 24, 2011 SY_SSS_1026s TRADEMARKS HD Radio and the HD, HD Radio, and Arc logos are proprietary trademarks of ibiquity Digital Corporation. ibiquity,

More information

Homeworx Lessons? What can we learn from the first deployment of OFDMA on HFC? Hal Roberts, Calix

Homeworx Lessons? What can we learn from the first deployment of OFDMA on HFC? Hal Roberts, Calix Homeworx Lessons? What can we learn from the first deployment of OFDMA on HFC? Hal Roberts, Calix The information contained in this presentation is not a commitment, promise, or legal obligation to deliver

More information

Network Requirements for DSL systems, (ADSL through G.Fast) (A summarized view)

Network Requirements for DSL systems, (ADSL through G.Fast) (A summarized view) Network Requirements for DSL systems, (ADSL through G.Fast) (A summarized view) Gilberto GG Guitarte, BB Connectivity Director TE Connectivity FTTH LATAM Chapter CHAIRMAN 2/24/2014 G.A.Guitarte 1 Executive

More information

CS263: Wireless Communications and Sensor Networks

CS263: Wireless Communications and Sensor Networks CS263: Wireless Communications and Sensor Networks Matt Welsh Lecture 2: RF Basics and Signal Encoding September 22, 2005 2005 Matt Welsh Harvard University 1 Today's Lecture Basics of wireless communications

More information

LTE enodeb Installation and Maintenance Tests

LTE enodeb Installation and Maintenance Tests Application Note LTE enodeb Installation and Maintenance Tests Introduction The Long-Term Evolution (LTE) specifications are defined by the Third Generation Partnership Project (3GPP), which is part of

More information

ADSL2 AND ADSL2plus THE NEW ADSL STANDARDS

ADSL2 AND ADSL2plus THE NEW ADSL STANDARDS ADSL2 AND ADSL2plus THE NEW ADSL STANDARDS March 25, 2003 ADSL2 AND ADSL2plus - THE NEW ADSL STANDARDS In July 2002, the ITU completed G.992.3 and G.992.4 1, two new standards for ADSL technology collectively

More information

Implementing Digital Wireless Systems. And an FCC update

Implementing Digital Wireless Systems. And an FCC update Implementing Digital Wireless Systems And an FCC update Spectrum Repacking Here We Go Again: The FCC is reallocating 600 MHz Frequencies for Wireless Mics 30-45 MHz (8-m HF) 174-250 MHz (VHF) 450-960 MHz

More information

DT3: RF On/Off Remote Control Technology. Rodney Singleton Joe Larsen Luis Garcia Rafael Ocampo Mike Moulton Eric Hatch

DT3: RF On/Off Remote Control Technology. Rodney Singleton Joe Larsen Luis Garcia Rafael Ocampo Mike Moulton Eric Hatch DT3: RF On/Off Remote Control Technology Rodney Singleton Joe Larsen Luis Garcia Rafael Ocampo Mike Moulton Eric Hatch Agenda Radio Frequency Overview Frequency Selection Signals Methods Modulation Methods

More information

Implementation of Digital Signal Processing: Some Background on GFSK Modulation

Implementation of Digital Signal Processing: Some Background on GFSK Modulation Implementation of Digital Signal Processing: Some Background on GFSK Modulation Sabih H. Gerez University of Twente, Department of Electrical Engineering s.h.gerez@utwente.nl Version 4 (February 7, 2013)

More information

Digital Subscriber Line (DSL)

Digital Subscriber Line (DSL) CHAPTER 9 This chapter describes the level of support that Cisco ANA provides for DSL, as follows: Technology Description, page 9-1 Inventory and Information Model Objects (IMOs), page 9-2 Vendor-Specific

More information

Line Simulator (LiSi) for Asymmetric and Very High-Speed Digital Subscriber Line

Line Simulator (LiSi) for Asymmetric and Very High-Speed Digital Subscriber Line Line Simulator (LiSi) for Asymmetric and Very High-Speed Digital Subscriber Line Nikolaos Choulakis, Research Masters in Telecommunications, University College London Abstract: A brief introduction describing

More information

Analog vs. Digital Transmission

Analog vs. Digital Transmission Analog vs. Digital Transmission Compare at two levels: 1. Data continuous (audio) vs. discrete (text) 2. Signaling continuously varying electromagnetic wave vs. sequence of voltage pulses. Also Transmission

More information

EECC694 - Shaaban. Transmission Channel

EECC694 - Shaaban. Transmission Channel The Physical Layer: Data Transmission Basics Encode data as energy at the data (information) source and transmit the encoded energy using transmitter hardware: Possible Energy Forms: Electrical, light,

More information

Data Transmission via Modem. The Last Mile Problem. Modulation of Digital Signals. Modem Standards (CCITT)

Data Transmission via Modem. The Last Mile Problem. Modulation of Digital Signals. Modem Standards (CCITT) The Last Mile Problem LN, MN, WN how to connect private users at home to such networks? Problem of the last mile: somehow connect private homes to the public Internet without laying many new cables By

More information

INDUSTRY CODE C559:2012 UNCONDITIONED LOCAL LOOP SERVICE (ULLS) NETWORK DEPLOYMENT PART 3 REQUIREMENTS FOR DEPLOYMENT CLASS SYSTEMS

INDUSTRY CODE C559:2012 UNCONDITIONED LOCAL LOOP SERVICE (ULLS) NETWORK DEPLOYMENT PART 3 REQUIREMENTS FOR DEPLOYMENT CLASS SYSTEMS COMMUNICATIONS ALLIANCE LTD INDUSTRY CODE C559:2012 UNCONDITIONED LOCAL LOOP SERVICE (ULLS) NETWORK DEPLOYMENT PART 3 REQUIREMENTS FOR DEPLOYMENT CLASS SYSTEMS C559:2012 Unconditioned Local Loop Service

More information

Adding Analog Noises to the DOCSIS 3.0 Cable Network

Adding Analog Noises to the DOCSIS 3.0 Cable Network Application Note Adding Analog Noises to the DOCSIS 3.0 Cable Network James Lim Applications Engineer, Noisecom Abstract Injecting Additive White Gaussian Noise (Gaussian Noise) of varying power from Noisecom

More information

:-------------------------------------------------------Instructor---------------------

:-------------------------------------------------------Instructor--------------------- Yarmouk University Hijjawi Faculty for Engineering Technology Computer Engineering Department CPE-462 Digital Data Communications Final Exam: A Date: 20/05/09 Student Name :-------------------------------------------------------Instructor---------------------

More information

During class please switch off your mobile, pager or other that may interrupt.

During class please switch off your mobile, pager or other that may interrupt. Intro to ADSL During class please switch off your mobile, pager or other that may interrupt. Course objectives: The trainee will understand the working principles of ADSL. The trainee will get an overview

More information

RF Measurements Using a Modular Digitizer

RF Measurements Using a Modular Digitizer RF Measurements Using a Modular Digitizer Modern modular digitizers, like the Spectrum M4i series PCIe digitizers, offer greater bandwidth and higher resolution at any given bandwidth than ever before.

More information

XDSL and DSLAM Access Technologies

XDSL and DSLAM Access Technologies XDSL and DSLAM Access Technologies Abstract What are the differences between the different forms of xdsl technology, such as ADSL and HDSL? How are they implemented. What are the limitations? What are

More information

How DSL Works. by Curt Franklin

How DSL Works. by Curt Franklin by Curt Franklin How DSL Works When you connect to the Internet, you might connect through a regular modem, through a localarea network connection in your office, through a cable modem or through a digital

More information

Signal-to-Noise, Carrier-to-Noise, EbNo on Signal Quality Ratios. by Wolfgang Damm, WTG

Signal-to-Noise, Carrier-to-Noise, EbNo on Signal Quality Ratios. by Wolfgang Damm, WTG Signal-to-Noise, Carrier-to-Noise, EbNo on Signal Quality Ratios by Wolfgang Damm, WTG Agenda Signal Measurement Environment Ratios: S/N, C/N, C/No, C/I, EbNo Shannon Limit Error Correction BER & Coding

More information

FURTHER READING: As a preview for further reading, the following reference has been provided from the pages of the book below:

FURTHER READING: As a preview for further reading, the following reference has been provided from the pages of the book below: FURTHER READING: As a preview for further reading, the following reference has been provided from the pages of the book below: Title: Broadband Access Technologies Author: Albert Azzam and Niel Ransom

More information

&"#' ( "#' )*! #+ #,# 1" 1! 2"# ' 6! #* #!"#" +" )$# # # "#$#$ '2 2 ## #1##9 # # ##2 #( # 8##! #9# 9@8!( " " "32#$#$2#9 # "#!#1#$#$#9 '29# # #9$

&#' ( #' )*! #+ #,# 1 1! 2# ' 6! #* #!# + )$# # # #$#$ '2 2 ## #1##9 # # ##2 #( # 8##! #9# 9@8!(   32#$#$2#9 # #!#1#$#$#9 '29# # #9$ !"## $#!%!"# &"#' ( "#' )*! #+ #,# "##!$ -+./0 1" 1! 2"# # -&1!"#" (2345-&1 #$6.7 -&89$## ' 6! #* #!"#" +" 1##6$ "#+# #-& :1# # $ #$#;1)+#1#+

More information

T = 1 f. Phase. Measure of relative position in time within a single period of a signal For a periodic signal f(t), phase is fractional part t p

T = 1 f. Phase. Measure of relative position in time within a single period of a signal For a periodic signal f(t), phase is fractional part t p Data Transmission Concepts and terminology Transmission terminology Transmission from transmitter to receiver goes over some transmission medium using electromagnetic waves Guided media. Waves are guided

More information

TCOM 370 NOTES 99-6 VOICE DIGITIZATION AND VOICE/DATA INTEGRATION

TCOM 370 NOTES 99-6 VOICE DIGITIZATION AND VOICE/DATA INTEGRATION TCOM 370 NOTES 99-6 VOICE DIGITIZATION AND VOICE/DATA INTEGRATION (Please read appropriate parts of Section 2.5.2 in book) 1. VOICE DIGITIZATION IN THE PSTN The frequencies contained in telephone-quality

More information

Chapter 8: The Telephone System

Chapter 8: The Telephone System Chapter 8: The Telephone System MULTIPLE CHOICE 1. DTMF stands for: a. Digital Telephony Multiple Frequency c. Dual-Tone Multifrequency b. Dial Tone Master Frequency d. Digital Trunk Master Frequency 2.

More information

NATIONAL CABLE TELEVISION ASSOCIATION ANNUAL CONVENTION CHICAGO, ILLINOIS

NATIONAL CABLE TELEVISION ASSOCIATION ANNUAL CONVENTION CHICAGO, ILLINOIS 121 NATIONAL CABLE TELEVISION ASSOCIATION ANNUAL CONVENTION CHICAGO, ILLINOIS JUNE' 1970 PHASE LOCK APPLICATIONS IN CATV SYSTEMS I. Switzer, P. Eng., Chief Engineer, Maclean-Hunter Cable TV Limited, 27

More information

Non-Data Aided Carrier Offset Compensation for SDR Implementation

Non-Data Aided Carrier Offset Compensation for SDR Implementation Non-Data Aided Carrier Offset Compensation for SDR Implementation Anders Riis Jensen 1, Niels Terp Kjeldgaard Jørgensen 1 Kim Laugesen 1, Yannick Le Moullec 1,2 1 Department of Electronic Systems, 2 Center

More information

TELECOMMUNICATIONS STANDARDS ADVISORY COMMITTEE TSAC WORKING GROUP ON NEW STANDARDS AND POLICY (NSP)

TELECOMMUNICATIONS STANDARDS ADVISORY COMMITTEE TSAC WORKING GROUP ON NEW STANDARDS AND POLICY (NSP) TELECOMMUNICATIONS STANDARDS ADVISORY COMMITTEE TSAC WORKING GROUP ON NEW STANDARDS AND POLICY (NSP) Introduction Development of Digital Subscriber Line (DSL) Technology This paper introduces the development

More information

Future Proof Telecommunications Networks with VDSL2

Future Proof Telecommunications Networks with VDSL2 Future Proof Telecommunications Networks with VDSL2 By: Stephan Wimoesterer Product Marketing Manager, VDSL2 Stephan. Wimoesterer@infineon.com V1.1 July, 2005 Future Proof Telecommunications Networks With

More information

QAM Demodulation. Performance Conclusion. o o o o o. (Nyquist shaping, Clock & Carrier Recovery, AGC, Adaptive Equaliser) o o. Wireless Communications

QAM Demodulation. Performance Conclusion. o o o o o. (Nyquist shaping, Clock & Carrier Recovery, AGC, Adaptive Equaliser) o o. Wireless Communications 0 QAM Demodulation o o o o o Application area What is QAM? What are QAM Demodulation Functions? General block diagram of QAM demodulator Explanation of the main function (Nyquist shaping, Clock & Carrier

More information

MATRIX TECHNICAL NOTES

MATRIX TECHNICAL NOTES 200 WOOD AVENUE, MIDDLESEX, NJ 08846 PHONE (732) 469-9510 FAX (732) 469-0418 MATRIX TECHNICAL NOTES MTN-107 TEST SETUP FOR THE MEASUREMENT OF X-MOD, CTB, AND CSO USING A MEAN SQUARE CIRCUIT AS A DETECTOR

More information

AM/FM/ϕM Measurement Demodulator FS-K7

AM/FM/ϕM Measurement Demodulator FS-K7 Data sheet Version 02.00 AM/FM/ϕM Measurement Demodulator FS-K7 July 2005 for the Analyzers FSQ/FSU/FSP and the Test Receivers ESCI/ESPI AM/FM/ϕM demodulator for measuring analog modulation parameters

More information

Optimal Transmit Spectra for Communication on Digital Subscriber Lines

Optimal Transmit Spectra for Communication on Digital Subscriber Lines Optimal Transmit Spectra for Communication on Digital Subscriber Lines Rohit V. Gaikwad and Richard G. Baraniuk Department of Electrical and Computer Engineering Rice University Houston, Texas, 77005 USA

More information

Broadband access. Nils Holte, NTNU. NTNU Department of Telecommunications Kursdagene ved NTNU, Digitale telenett, 9. januar 2002 1.

Broadband access. Nils Holte, NTNU. NTNU Department of Telecommunications Kursdagene ved NTNU, Digitale telenett, 9. januar 2002 1. Broadband access - properties of the copper network Nils Holte, Kursdagene ved, Digitale telenett, 9. januar 2002 1 Definition of broadband Overview Alternatives for fixed broadband access pair cable,

More information

Propagation Channel Emulator ECP_V3

Propagation Channel Emulator ECP_V3 Navigation simulators Propagation Channel Emulator ECP_V3 1 Product Description The ECP (Propagation Channel Emulator V3) synthesizes the principal phenomena of propagation occurring on RF signal links

More information

The Phase Modulator In NBFM Voice Communication Systems

The Phase Modulator In NBFM Voice Communication Systems The Phase Modulator In NBFM Voice Communication Systems Virgil Leenerts 8 March 5 The phase modulator has been a point of discussion as to why it is used and not a frequency modulator in what are called

More information

Physical Layer Part 2. Data Encoding Techniques. Networks: Data Encoding 1

Physical Layer Part 2. Data Encoding Techniques. Networks: Data Encoding 1 Physical Layer Part 2 Data Encoding Techniques Networks: Data Encoding 1 Analog and Digital Transmissions Figure 2-23.The use of both analog and digital transmissions for a computer to computer call. Conversion

More information

Broadcast digital subscriber lines using discrete multitone for broadband access

Broadcast digital subscriber lines using discrete multitone for broadband access Microprocessors and Microsystems 22 (1999) 605 610 Broadcast digital subscriber lines using discrete multitone for broadband access K.-P. Ho* Department of Informational Engineering, The Chinese University

More information

Chap#5 (Data communication)

Chap#5 (Data communication) Chap#5 (Data communication) Q#1: Define analog transmission. Normally, analog transmission refers to the transmission of analog signals using a band-pass channel. Baseband digital or analog signals are

More information

Optimizing IP3 and ACPR Measurements

Optimizing IP3 and ACPR Measurements Optimizing IP3 and ACPR Measurements Table of Contents 1. Overview... 2 2. Theory of Intermodulation Distortion... 2 3. Optimizing IP3 Measurements... 4 4. Theory of Adjacent Channel Power Ratio... 9 5.

More information

Exam questions. 1. Which of the following are true regarding xdsl? Choose three. It uses a portion of the existing phone line.

Exam questions. 1. Which of the following are true regarding xdsl? Choose three. It uses a portion of the existing phone line. Nguyen Khac Quyet - Take Exam Exam questions Time remaining: 00: 08: 31 1. Which of the following are true regarding xdsl? Choose three. It uses a portion of the existing phone line It is symmetrical It

More information

What s The Difference Between Bit Rate And Baud Rate?

What s The Difference Between Bit Rate And Baud Rate? What s The Difference Between Bit Rate And Baud Rate? Apr. 27, 2012 Lou Frenzel Electronic Design Serial-data speed is usually stated in terms of bit rate. However, another oftquoted measure of speed is

More information

Access to Data & Computer Networks Physical Level

Access to Data & Computer Networks Physical Level Lecture 7 Access to Data & Computer Networks Physical Level Serial Interface RS232C, RS232D RS449, X21 Modem Traditional Modem Intelligent modem Wireless Modem Digital Telephony T1 & E1 Systems SONET/SDH

More information

GSM/EDGE Output RF Spectrum on the V93000 Joe Kelly and Max Seminario, Verigy

GSM/EDGE Output RF Spectrum on the V93000 Joe Kelly and Max Seminario, Verigy GSM/EDGE Output RF Spectrum on the V93000 Joe Kelly and Max Seminario, Verigy Introduction A key transmitter measurement for GSM and EDGE is the Output RF Spectrum, or ORFS. The basis of this measurement

More information

XDSL TECHNIQUES FOR POWER LINE COMMUNICATIONS

XDSL TECHNIQUES FOR POWER LINE COMMUNICATIONS XDSL TECHNIQUES FOR POWER LINE COMMUNICATIONS Costas Assimakopoulos*, P.L. Katsis*, F.-N. Pavlidou*, Danilo Obradovic**, Milorad Obradovic** Abstract *Aristotle University of Thessaloniki Dept. of Elec.

More information

Optimal Signaling Strategies for Symmetric and Asymmetric Bit-Rate Communication Services in the Presence of Crosstalk

Optimal Signaling Strategies for Symmetric and Asymmetric Bit-Rate Communication Services in the Presence of Crosstalk Optimal Signaling Strategies for Symmetric and Asymmetric Bit-Rate Communication Services in the Presence of Crosstalk Rohit V. Gaikwad and Richard G. Baraniuk ECE Technical Report #991 Rice University

More information

The Effective Number of Bits (ENOB) of my R&S Digital Oscilloscope Technical Paper

The Effective Number of Bits (ENOB) of my R&S Digital Oscilloscope Technical Paper The Effective Number of Bits (ENOB) of my R&S Digital Oscilloscope Technical Paper Products: R&S RTO1012 R&S RTO1014 R&S RTO1022 R&S RTO1024 This technical paper provides an introduction to the signal

More information

Channel Bandwidth, MHz. Symbol Rate, Msym/sec

Channel Bandwidth, MHz. Symbol Rate, Msym/sec APPENDIXB Information in the following tables is from the DOCSIS and EuroDOCSIS Radio Frequency Interface Specification, and should be considered minimum recommended performance criteria for reliable data

More information

ADSL part 2, Cable Internet, Cellular

ADSL part 2, Cable Internet, Cellular ADSL part 2, Cable Internet, Cellular 20 June 2016 Lecture 12 20 June 2016 SE 428: Advanced Computer Networks 1 Topics for Today ADSL Cable Internet Cellular Radio Networks 20 June 2016 SE 428: Advanced

More information

The Boonton USB Peak Power Sensor, Wi-Fi ac Signals and the ETSI EN Standard

The Boonton USB Peak Power Sensor, Wi-Fi ac Signals and the ETSI EN Standard Application Note The Boonton 55006 USB Peak Power Sensor, Wi-Fi 802.11ac Signals and the ETSI EN 300 328 Standard Stephen Shaw Applications Engineer, Boonton Electronics Abstract This application note

More information

Digital Subscriber Line Technology with a focus on Asynchronous Digital Subscriber Line

Digital Subscriber Line Technology with a focus on Asynchronous Digital Subscriber Line Southern Methodist University Digital Subscriber Line Technology with a focus on Asynchronous Digital Subscriber Line by Raymond McCurry [Note: due to technical problems with use of a special graphics

More information

Part 2: Receiver and Demodulator

Part 2: Receiver and Demodulator University of Pennsylvania Department of Electrical and Systems Engineering ESE06: Electrical Circuits and Systems II Lab Amplitude Modulated Radio Frequency Transmission System Mini-Project Part : Receiver

More information

VDSL2 POTS Splitters and Microfilters

VDSL2 POTS Splitters and Microfilters VL2 POTS Splitters and Microfilters Introduction The purpose of this paper is to discuss the characteristics of splitters and microfilters for VL2 applications. Both CPE configurations are simplified into

More information

CARLETON UNIVERSITY Department of Systems and Computer Engineering. SYSC4700 Telecommunications Engineering Winter 2014. Term Exam 13 February 2014

CARLETON UNIVERSITY Department of Systems and Computer Engineering. SYSC4700 Telecommunications Engineering Winter 2014. Term Exam 13 February 2014 CARLETON UNIVERSITY Department of Systems and Computer Engineering SYSC4700 Telecommunications Engineering Winter 2014 Term Exam 13 February 2014 Duration: 75 minutes Instructions: 1. Closed-book exam

More information

VOR software receiver and decoder with dspic

VOR software receiver and decoder with dspic VOR software receiver and decoder with dspic By Josef Stastny 9-15-2004-1 - 1. Introduction VOR (VHF Omni-directional Radio range) is a radio navigation system used for civil and military navigation of

More information

TC-2000A Universal Pager Tester

TC-2000A Universal Pager Tester TC-2000A Universal Pager Tester Data Sheet TC-2000A Universal Pager Tester Product Description The TC-2000A Universal Pager Tester combines all of the test features required for pager testing within a

More information

HIGH CAPACITY DSL-SYSTEMS

HIGH CAPACITY DSL-SYSTEMS Electronic Communications Committee (ECC) within the European Conference of Postal and Telecommunications Administrations (CEPT) HIGH CAPACITY DSL-SYSTEMS Oulu, March 2006 Page 2 EXECUTIVE SUMMARY In this

More information

MSB MODULATION DOUBLES CABLE TV CAPACITY Harold R. Walker and Bohdan Stryzak Pegasus Data Systems ( 5/12/06) pegasusdat@aol.com

MSB MODULATION DOUBLES CABLE TV CAPACITY Harold R. Walker and Bohdan Stryzak Pegasus Data Systems ( 5/12/06) pegasusdat@aol.com MSB MODULATION DOUBLES CABLE TV CAPACITY Harold R. Walker and Bohdan Stryzak Pegasus Data Systems ( 5/12/06) pegasusdat@aol.com Abstract: Ultra Narrow Band Modulation ( Minimum Sideband Modulation ) makes

More information

VDSL: The Next Step in the DSL Progression

VDSL: The Next Step in the DSL Progression VDSL: The Next Step in the DSL Progression Krista S. Jacobsen (jacobsen@ti.com) Broadband Access Group San Jose, CA DSPS Fest August 1999 Houston, TX 1 July 16, 1999 2 Table of Contents 1 General overview...5

More information

The front end of the receiver performs the frequency translation, channel selection and amplification of the signal.

The front end of the receiver performs the frequency translation, channel selection and amplification of the signal. Many receivers must be capable of handling a very wide range of signal powers at the input while still producing the correct output. This must be done in the presence of noise and interference which occasionally

More information

xdsl Tutorial By Brandon Provolt Engineering Intern Marketing and Product Development Group Schott Corporation Version 0.53 (beta) August 2000

xdsl Tutorial By Brandon Provolt Engineering Intern Marketing and Product Development Group Schott Corporation Version 0.53 (beta) August 2000 xdsl Tutorial By Brandon Provolt Engineering Intern Marketing and Product Development Group Schott Corporation Version 0.53 (beta) August 2000 Contents 1 General Information 1.1 Introduction 1.2 What is

More information

MODULATION Systems (part 1)

MODULATION Systems (part 1) Technologies and Services on Digital Broadcasting (8) MODULATION Systems (part ) "Technologies and Services of Digital Broadcasting" (in Japanese, ISBN4-339-62-2) is published by CORONA publishing co.,

More information

Digital Subscriber Line

Digital Subscriber Line 21 CHAPTER Chapter Goals Identify and discuss different types of digital subscriber line (DSL) technologies. Discuss the benefits of using xdsl technologies. Explain how ASDL works. Explain the basic concepts

More information

Sampling Theorem Notes. Recall: That a time sampled signal is like taking a snap shot or picture of signal periodically.

Sampling Theorem Notes. Recall: That a time sampled signal is like taking a snap shot or picture of signal periodically. Sampling Theorem We will show that a band limited signal can be reconstructed exactly from its discrete time samples. Recall: That a time sampled signal is like taking a snap shot or picture of signal

More information

THE BCS PROFESSIONAL EXAMINATIONS BCS Level 5 Diploma in IT. October 2009 EXAMINERS' REPORT. Computer Networks

THE BCS PROFESSIONAL EXAMINATIONS BCS Level 5 Diploma in IT. October 2009 EXAMINERS' REPORT. Computer Networks THE BCS PROFESSIONAL EXAMINATIONS BCS Level 5 Diploma in IT October 2009 EXAMINERS' REPORT Computer Networks General Comments The responses to questions were of marginally better quality than April 2009

More information

VDSL (VERY HIGH DATA BIT RATE DIGITAL SUBSCRIBER LINE)

VDSL (VERY HIGH DATA BIT RATE DIGITAL SUBSCRIBER LINE) 1 VDSL (VERY HIGH DATA BIT RATE DIGITAL SUBSCRIBER LINE) INTRODUCTION 1. Recent events in the telecommunications environment are giving rise to a new class of service providers, setting the stage for how

More information

New TV Technologies for Science Education. A.K. Bhatnagar Chief Engineer Doordarshan

New TV Technologies for Science Education. A.K. Bhatnagar Chief Engineer Doordarshan New TV Technologies for Science Education A.K. Bhatnagar Chief Engineer Doordarshan Digital TV Delivery Platforms Digital Terrestrial TV Broadcasting Digital Cable TV IPTV Mobile TV DTH Satellite Digital

More information

Chapter 6: Broadcast Systems. Mobile Communications. Unidirectional distribution systems DVB DAB. High-speed Internet. architecture Container

Chapter 6: Broadcast Systems. Mobile Communications. Unidirectional distribution systems DVB DAB. High-speed Internet. architecture Container Mobile Communications Chapter 6: Broadcast Systems Unidirectional distribution systems DAB DVB architecture Container High-speed Internet Prof. Dr.-Ing. Jochen Schiller, http://www.jochenschiller.de/ MC

More information

SC-FDMA for 3GPP LTE uplink. Hong-Jik Kim, Ph. D.

SC-FDMA for 3GPP LTE uplink. Hong-Jik Kim, Ph. D. SC-FDMA for 3GPP LTE uplink, Ph D Wireless Broadband The New Category Mobil ile Local Area Fixe ed Cellular Cordless POTS UMTS / WCDM A HSDPA 3GPP LTE Wireless Broadband 1xEV-DO WiMAX 80216e 80220 80211

More information