Title :
Minimum selection GSC in independent Rayleigh fading
Author :
Mallik, Ranjan K. ; Gupta, Pranay ; Zhang, Q.T.
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol., New Delhi, India
Abstract :
We analyze the error performance of minimum selection generalized selection combining (MS-GSC), in which the minimum number of diversity branches are selected such that their combined signal-to-noise ratio (SNR) is above a given threshold. A flat Rayleigh fading channel with independent and distinctly distributed branch SNR is considered. By transforming the ordered instantaneous branch SNR to their differences, we derive the distribution of the number of selected branches in closed-form. We then modify the derivation of this distribution to get the characteristic function (c.f.) of the combiner output SNR. This c.f. is used to obtain the symbol error probability for different coherent digital modulation schemes.
Keywords :
Rayleigh channels; diversity reception; error statistics; modulation; MS-GSC; SNR; characteristic function; closed-form distribution; coherent digital modulation; diversity branches; error performance; flat Rayleigh fading channel; independent Rayleigh fading; minimum selection generalized selection combining; signal-to-noise ratio; symbol error probability; Baseband; Digital modulation; Diversity reception; Error analysis; Error probability; Fading; Performance analysis; Rayleigh channels; Signal analysis; Signal processing;
Conference_Titel :
Communications, 2005. ICC 2005. 2005 IEEE International Conference on
Print_ISBN :
0-7803-8938-7
DOI :
10.1109/ICC.2005.1494398
