Mitlin Performance Optimization of Digital Communications Systems

Erscheinungsjahr 2006
ISBN: 978-1-4200-1334-4
Verlag: Taylor & Francis
Format: PDF
Kopierschutz: Adobe DRM (»Systemvoraussetzungen)

E-Book, Englisch, 224 Seiten

Because fine-tuning the parameters of a system is critical to a developer's success, Performance Optimization of Digital Communications Systems examines particular optimization problems in digital communications, presenting analytical techniques in combination with SystemView and MATLAB® simulations. Consisting of ten chapters, this monograph presents a unique method for determining the quality of a communications channel - a great advantage to any company that uses this method. The book presents a method for the transmission of proprietary data. It also describes the means to reduce the peak-to-average power ratio and introduces optimal phase shifters for multicarrier communication systems.

This volume contains numerous illustrations and includes appendices that offer optimization puzzles, MATLAB scripts, and some newly discovered properties of flat-spectrum and spectrum-shaped waveforms.

Zielgruppe

Undergraduate students, electrical engineers, and professionals in networking, communications, and telecommunications.

Autoren/Hrsg.

Mitlin, Vladimir

Fachgebiete

• Technische Wissenschaften Elektronik | Nachrichtentechnik Nachrichten- und Kommunikationstechnik

Inhaltsverzeichnis

Introduction
About This Book
Acknowledgments

Method for Determining the Quality of a
Communication Channel
Background

Main Idea Illustrated and a Minimization Principle

Phase-Spanning Nyquist Set Test
Frequency-Spanning Nyquist Set Test

Determining the Noise Level in a Nonbaseband System
Measuring the Level of a Useful Signal

Conclusions

Digital Communications in Stealth Mode

Background

Stealth Communications Transceiver

Test on Randomness

BER Performance

Using a Decoy Signal

Conclusions

Pulse Shape Optimization
Background

Pulse Shape Optimization Criterion

SO-Pulse and L-Pulse

Phi-Pulse

BER Test
Approximation of Pulses by SAS

Data Windows Corresponding to the Pulses Introduced
Raised Pulses

Conclusions

Optimal Phase Shifters for Peak-to-Average Power Ratio
Reduction in Multicarrier Communication Systems
Background

Optimal Phase Shifters and the Constant Envelope Principle
Flat Spectrum Chirps

Simulations of Multicarrier Transmission
Possible Applications of FSC

Conclusions

Optimization of the Automatic Repeat Request Parameters
in Quadrature Amplitude Modulation Channels
Background

Derivation of the BER of a QAM Channel with FEC and ARQ

ARQ Performance Gain
A Method of Estimating the ARQ Gain
A Procedure for Determining the Optimum ARQ Parameters
Extension of the Method for the Case of a Slowly Fading
Channel

Determining the Average Number of Transmissions and the
Uncoded SER, Given the SER Past FEC/ARQ
Determining an Average Fraction of Erroneous Bits in an
Erroneous QAM Symbol
Conclusions

Optimal Selection of Error Correction and Retransmission
Parameters in Multichannel Communications Systems
Background

Performance Gain Due to FEC/ARQ in Discrete Multitone
Systems
Mean-Field Approximation for Multicarrier Channel
with ARQ
An Approximate Solution of Equation 7.2.2

Optimization of FEC and ARQ Parameters for Current ADSL
Standards

Conclusions

Bit Error Rate of Self-Similar Constellations
in ADSL Systems

Background

Self-Similarity of ADSL QAM Constellations
Error Probability Function of an ADSL QAM Constellation Encoder

Nonsquare Constellations: An Asymptotic Analysis
Comparison with Numerical Simulations
Conclusions

Throughput Optimization in a General Duplex
Communications System with FEC and ARQ

Background

A System Model with FEC and ARQ
Joint Optimization of FEC and ARQ Parameters in Both Directions

Conclusions

A Quantitative Procedure of Optimizing the MAC Packet
Size in TCP/IP-Compliant Networks
Background

Statement of the Problem of Optimizing the MAC Packet Size
in TCP/IP-Compliant Networks
Derivation of Equation 10.2.6
Determining the Optimal MAC Packet Size in the Case of a
Variable MAC Frame Length

Solution to the Problem and Decision Diagrams

Extension of the Method in the Case of a Fixed MAC Frame
Length

Extension of the Method to Account for Error Detection
and Retransmission in the TCP/IP Protocol

Application to 802.11-Compliant Networks
Conclusions

Appendices
A
Optimization Puzzles

B
MATLAB Scripts for the Bandwidth Optimization Problem

C
More about Flat Spectrum Chirps