Title :
Postdetection phase combining diversity for reception of faded DPSK signals
Author :
Adachi, Fumiyuki ; Ohno, Kizuku
Author_Institution :
NTT Mobile Commun. Sector, Kanagawa, Japan
fDate :
7/30/1992 12:00:00 AM
Abstract :
A new postdetection diversity scheme for the differential phase detection of faded DPSK signals is proposed. It combines the detector outputs in proportion to the squared value of each branch signal envelope. The average BER of pi /4-shift quaternary differential phase shift keying (QDPSK) with two-branch diversity is obtained through computer simulations assuming Rayleigh fading. It is found that the proposed diversity is superior to selection diversity by approximately 1.5 dB.
Keywords :
digital communication systems; diversity reception; error statistics; fading; phase shift keying; radio reception; signal detection; BER; QDPSK; Rayleigh fading; computer simulations; differential phase detection; differential phase shift keying; faded DPSK signals; phase combining diversity; postdetection diversity scheme; quaternary DPSK; two-branch diversity;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19920961
