Title :
Performance of diversity reception for QPSK with cochannel interference in a flat Rayleigh fading channel [mobile radio]
Author :
Lin, Sheng-Chou ; Chiang, Sheng-Tao
Author_Institution :
Dept. of Electron. Eng., Fu-Jen Catholic Univ., Taipei, Taiwan
Abstract :
The performances of maximum-ratio (MRC) and optimum diversity combining schemes in the presence of ISI due to cochannel interference (CCI) in flat Rayleigh fading channels are analyzed and compared. In flat fading environments, ISI can be generated by co-channel interferers due to the random symbol and phase offsets between the desired signal and the cochannel interferers. With these two random-valued offsets, the CCI is shown as a wide-sense stationary process (WSS) and then an optimal diversity can be applied. Several fading conditions experienced by desired and interfering signals are considered. The performance using the Gaussian interference model is also provided for comparison. An accurate error rate is obtained by using the moment method for each time-varying channel in Monte-Carlo simulations.
Keywords :
AWGN channels; Monte Carlo methods; Rayleigh channels; cochannel interference; diversity reception; intersymbol interference; method of moments; mobile radio; quadrature phase shift keying; time-varying channels; AWGN; CCI wide-sense stationary process; Gaussian interference model; ISI; MRC; Monte-Carlo simulation; QPSK; cochannel interference; diversity reception; error rate; flat Rayleigh fading channel; maximum-ratio diversity combining; mobile radio; moment method; optimum diversity combining; random phase offsets; random symbol offsets; time-varying channel; Diversity reception; Fading; Interchannel interference; Intersymbol interference; Land mobile radio; Performance analysis; Quadrature phase shift keying; Radiofrequency interference; Rayleigh channels; Signal generators;
Conference_Titel :
Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th
Print_ISBN :
0-7803-8521-7
DOI :
10.1109/VETECF.2004.1400352
