Title :
Error-bound formulation for multichannel reception of M-DPSK and pilot-aided M-PSK over Rayleigh-fading channels with postdetection combining
Author :
Chow, Yuk C. ; McGeehan, Joe P.
Author_Institution :
Telecommun. Res. Lab., Toshiba Res. Eur. Ltd., Bristol, UK
fDate :
5/1/2004 12:00:00 AM
Abstract :
Upper bounds for symbol-error probability are developed for multichannel reception of M-ary phase-shift keying (M-PSK) over frequency-flat Rayleigh-fading channels. Differential coherent demodulation of differentially encoded M-PSK (M-DPSK), pilot-tone aided coherent demodulation of M-PSK (PTA M-CPSK) and pilot-symbol aided coherent demodulation of M-PSK (PSA M-CPSK) are considered in the formulation. The bounds enable the investigation of the effects of fading correlation and unequal average power level between channels using postdetection diversity reception with maximal-ratio combining. Error-performance degradation due to imperfect demodulation effects, such as Doppler spread in M-DPSK schemes, noisy reference signals in PTA M-CPSK, and PSA M-CPSK schemes can be taken into account in the formulation. Exact bit-error probabilities for both binary and quaternary phase-shift keying are also derived.
Keywords :
Rayleigh channels; demodulation; differential detection; differential phase shift keying; diversity reception; error statistics; mobile communication; M-ary phase shift keying; Rayleigh fading channels; bit-error probabilities; differentially encoded M-PSK; diversity reception; error-bound formulation; fading correlation; maximal-ratio combining; multichannel reception; pilot-symbol aided coherent demodulation; postdetection combining; symbol-error probability; Degradation; Demodulation; Diversity reception; Fading; GSM; Phase detection; Phase modulation; Phase shift keying; Radio frequency; Rayleigh channels; Correlated fading; PSK; differential detection; phase-shift keying; pilot-aided coherent detection; postdetection diversity combining;
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2004.827160