Postdetection Selection Diversity Reception with Correlated, Unequal Average Power Rayleigh Fading Signals for π/4-Shift QDPSK Mobile Radio

Fumiyuki Adachi, Koji Ohno, Masaharu Ikura

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

The diversity gain degradations due to fading correlation and unequal average power are investigated for practical, two-branch postdetection selection diversity reception. The average bit error rate (BER) of π/4-shift QDPSK is theoretically analyzed taking into account additive white Gaussian noise (AWGN), cochannel interference, and multipath channel delay spread; exact diversity gain degradations are calculated. This paper also presents very simple and useful approximate expressions for the gain degradations. When the fading correlation and the power ratio between the two antennas are given by h12(| h12 |≦1) and q (≦1), respectively, the total gain degradation is D = 51og{q(l - |h12|2)} dB if the errors are caused by AWGN, while it is 51og{2q(l — |h12|2)/(1 + q2)} dB if cochannel interference and delay spread are the cause of errors.

Original languageEnglish
Pages (from-to)199-210
Number of pages12
JournalIEEE Transactions on Vehicular Technology
Volume41
Issue number2
DOIs
Publication statusPublished - 1992 May
Externally publishedYes

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics

Fingerprint Dive into the research topics of 'Postdetection Selection Diversity Reception with Correlated, Unequal Average Power Rayleigh Fading Signals for π/4-Shift QDPSK Mobile Radio'. Together they form a unique fingerprint.

Cite this