Title :
BER of PSAM 16-QAM with channel estimation error and MRC diversity
Author :
Cao, Lingzhi ; Beaulieu, Norman C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Alberta Univ., Edmonton, Alta., Canada
Abstract :
M-ary quadrature amplitude modulation (M-QAM) achieves high spectral efficiency in additive white Gaussian noise (AWGN) and fading channels. In practical wireless systems, the signal fading can severely degrade the receiver performance if the accurate channel amplitude and phase information is not available to the receiver. The bit error rate (BER) performance of maximal ratio combining (MRC) M-QAM with pilot symbol assisted modulation (PSAM) channel estimation in static and Rayleigh fading channels is derived. The effects of noise and estimator decorrelation on the received BER are examined. The high sensitivity of diversity systems to channel estimation error is investigated and quantified.
Keywords :
AWGN channels; Rayleigh channels; channel estimation; decorrelation; diversity reception; error statistics; quadrature amplitude modulation; BER; M-ary quadrature amplitude modulation; MRC diversity system; PSAM 16-QAM; Rayleigh fading channel; additive white Gaussian noise channel; bit error rate; channel estimation error; fading channels; maximal ratio combining; pilot symbol assisted modulation; AWGN; Additive white noise; Bit error rate; Channel estimation; Degradation; Diversity reception; Fading; Gaussian noise; Quadrature amplitude modulation; Rayleigh channels;
Conference_Titel :
Wireless Communication Systems, 2004, 1st International Symposium on
Print_ISBN :
0-7803-8472-5
DOI :
10.1109/ISWCS.2004.1407215
