Accession Number:

ADA439820

Title:

Performance Analysis of Variable Code Rate Signals Transmitted over Frequency-Nonselective, Slowly Fading Channels in a Pulse-Interference Environment

Descriptive Note:

Master's thesis

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF ELECTRICAL AND COMPUTER ENGINEERING

Personal Author(s):

Report Date:

2005-09-01

Pagination or Media Count:

117.0

Abstract:

Wireless systems, including wireless local area networks WLAN and cellular networks, are increasingly being used for both commercial and military applications. For military applications, it is important to analyze the effect of interference on wireless communications systems. The objective of this research is to investigate the performance of variable code rate signals transmitted over frequency-nonselective, slowly fading channels in a worst case, pulse-noise interference environment. Both binary phase-shift keying BPSK and noncoherently detected binary frequency-shift keying NCBFSK are considered. System performance with both Viterbi hard decision decoding HDD and soft decision decoding SDD is analyzed for additive white Gaussian noise AWGN alone and for AWGN plus pulse-noise interference for various receiver types and conditions of channel fading. The effect of varying the code rate, both for HDD and SDD, is examined. The amplitude of the signal power aexp 2sub c is modeled as a random variable, and the channel is modeled as either Rayleigh fading or Ricean fading, depending on the modulation under consideration.

Subject Categories:

  • Electrical and Electronic Equipment
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE