Title :
New generalized selection combining for BPSK signals in Rayleigh fading channels
Author :
Young Gil Kim ; Sang Wu Kim
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Korea Inst. of Technol., Taejon
Abstract :
We propose a new generalized selection combining (GSC) scheme that selects m diversity branches out of L (⩾m) diversity branches based on the magnitude of the log-likelihood ratio (LLR), which, for BPSK signals, is proportional to the product of the fading amplitude and the matched filter output. The proposed GSC is shown to provide a significant power gain over the conventional GSC which selects diversity branches based on signal-to-noise ratio. The proposed GSC scheme for m=3 is found to be only 0.3 dB inferior to the maximal ratio combining scheme (m=L), when L=8, in a Rayleigh fading channel
Keywords :
Rayleigh channels; diversity reception; error statistics; matched filters; multipath channels; phase shift keying; BER; BPSK signals; Rayleigh fading channels; diversity branches; generalized selection combining; log-likelihood ratio; matched filter; maximal ratio combining; multipath fading; signal-to-noise ratio; AWGN; Binary phase shift keying; Bit error rate; Diversity reception; Fading; Gas insulated transmission lines; Matched filters; Rayleigh channels; Signal resolution; Signal to noise ratio;
Conference_Titel :
Global Telecommunications Conference, 2001. GLOBECOM '01. IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-7206-9
DOI :
10.1109/GLOCOM.2001.965674
