Title :
Performance degradation of a transmit diversity scheme due to fading
Author :
Zheng, Tao ; Leung, Cyril
Author_Institution :
Dept. of Electr. & Comput. Eng., British Columbia Univ., Vancouver, BC, Canada
Abstract :
In this paper, the error performance of the Alamouti simple transmit diversity (STD) scheme in the presence of spatially correlated fading with time-selectivity or channel estimation error is studied. Exact expressions for the conditional bit error rates and simple approximate expressions for the average bit error rates over correlated Rayleigh fading channels are obtained. It is shown that STD performance generally degrades with increase in channel estimation error, decrease in temporal correlation and increase in spatial correlation.
Keywords :
Rayleigh channels; channel estimation; diversity reception; error statistics; Alamouti simple transmit diversity scheme; channel estimation error; conditional bit error rates; correlated Rayleigh fading channels; performance degradation; spatially correlated fading channel; temporal correlation; time-selectivity channel; Bit error rate; Channel estimation; Computer errors; Degradation; Detectors; Fading; Maximum likelihood detection; Maximum likelihood estimation; Rayleigh channels; Transmitting antennas;
Conference_Titel :
Communications, Computers and signal Processing, 2005. PACRIM. 2005 IEEE Pacific Rim Conference on
Print_ISBN :
0-7803-9195-0
DOI :
10.1109/PACRIM.2005.1517335
