Title :
Sensitivity to fading estimates in maximal ratio combining
Author :
Fonseka, J.P. ; Yin, Y. ; Korn, I.
Author_Institution :
Sch. of Eng. & Comput. Sci., Univ. of Texas, Dallas, TX, USA
Abstract :
The combined effect of imperfect magnitude and phase of fading estimates in maximal ratio combining (MRC) is analysed. Theoretical error rate bounds are derived under small estimate errors. These bounds are tested over Rayleigh and Nakagami-m fading channels with binary phase shift keying (BPSK) modulation, and verified using computer simulation. Numerical results quantify the sensitivity of MRC to errors in fading estimates. It is numerically demonstrated that for BPSK, MRC is more sensitive to errors in phase estimates than to errors in magnitude estimates.
Keywords :
Rayleigh channels; amplitude estimation; diversity reception; error statistics; phase estimation; phase shift keying; BPSK; Nakagami-m fading channels; Rayleigh channels; binary phase shift keying; computer simulation; diversity combining; error rate bounds; fading estimate magnitude; fading estimate phase; fading estimates sensitivity; maximal ratio combining; small estimate errors;
Journal_Title :
Communications, IEE Proceedings-
DOI :
10.1049/ip-com:20030380
