Performance Analysis of Hybrid ARQ Protocols in a Slotted Direct- Sequence Code-Division Multiple-Access Network: Jamming Analysis

Abstract

This paper examines the performance of Type 1 Hybrid ARQ protocols in a slotted direct-sequence code-division multiple-access network operating in a hostile jamming environment. The network consists of an arbitrary number of transceivers arranged in a paired-off topology. The traffic arrival process is derived by means of a Markov model. Through-put delay expressions are derived in terms of the channel cutoff rate and capacity. The effects of jammer state information are discussed. Network design parameters are identified and their dependency on system parameters is examined in detail. It is shown that, for a given population size, traffic density, and bit energy-to-jammer noise ratio, there is an optimal probability of retransmission, code rate, and processing gain that maximizes network performance in the presence of the worst case jamming.

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Document Details

Document Type
Technical Report
Publication Date
Nov 18, 1989
Accession Number
ADA236773

Entities

People

  • Joseph M. Hanratty

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Artificial Satellites
  • Background Noise
  • Code Division Multiple Access
  • Coding
  • Computer Networks
  • Computer Science
  • Decoding
  • Engineering
  • Modulation
  • Multiple Access
  • Numerical Analysis
  • Probability
  • Probability Distributions
  • Security
  • Spread Spectrum
  • Symbols
  • Transmitters

Fields of Study

  • Computer science

Readers

  • Computer Networking
  • Radio communications and signal processing.