Title :
Performance of switched combining systems in Rayleigh fading channels with imperfect channel estimation
Author :
Xiao, Lei ; Dong, Xiaodai
Author_Institution :
Dept. of Electr. & Comput. Eng., Alberta Univ., Edmonton, Alta., Canada
Abstract :
A general analysis is presented for the characterization of multibranch switched combining (SWC) systems in Rayleigh fading channels with imperfect channel estimation (ICE). The SWC schemes studied in this paper include the switch-and-stay combining (SSC) and switch-and-examine combining (SEC) systems. The probability density function (PDF) of the equivalent noise term at the output of an SWC combiner with ICE is derived in closed-form. Simple finite integral expressions are then obtained for the error rate of arbitrary 2D signaling with SWC and minimum mean square error (MMSE) channel estimators.
Keywords :
Rayleigh channels; channel estimation; diversity reception; error statistics; integral equations; least mean squares methods; ICE; MMSE; Rayleigh fading channels; SWC combiner output statistics; arbitrary 2D signaling error rate; bit error rate; diversity combining; equivalent noise term PDF; finite integral expressions; imperfect channel estimation; minimum mean square error estimator; multibranch switched combining systems; probability density function; switch-and-examine combining system; switch-and-stay combining system; symbol error rate; Bit error rate; Channel estimation; Diversity reception; Error analysis; Fading; Ice; Mean square error methods; Probability density function; RAKE receivers; Two dimensional displays;
Conference_Titel :
Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th
Print_ISBN :
0-7803-8521-7
DOI :
10.1109/VETECF.2004.1400345
