Title :
Effect of channel estimation errors on MRC diversity in Rician fading channels
Author :
Yao Ma ; Schober, Robert ; Pasupathy, S.
Author_Institution :
Dept. of ECpE, Iowa State Univ., Ames, IA, USA
Abstract :
We study the effect of imperfect channel estimation (ICE) on the performance of M-ary phase shift keying (M-PSK) with maximum ratio combining (MRC) in generalized Rician fading channels. First, we derive the error probability formulas for M-PSK with MRC and ICE in arbitrary Rician fading channels. Furthermore, we derive the effective receiver output signal-to-noise ratio (SNR) statistics and the outage probability, and analytically quantify the average SNR loss of M-PSK caused by ICE, assuming independent diversity branches. Finally, we point out a major approximation in a popular approach used in the literature to evaluate the adverse effect of ICE.
Keywords :
Rician channels; channel estimation; diversity reception; error statistics; phase shift keying; M-ary phase shift keying; PSK; Rician fading channels; SNR; error probability formulas; imperfect channel estimation; maximum ratio combining; signal-to-noise ratio; Cause effect analysis; Channel estimation; Diversity reception; Error probability; Ice; Phase shift keying; Rician channels; Signal analysis; Signal to noise ratio; Statistical analysis; Correlated fading; Rician fading channels; imperfect channel estimation; maximum ratio combining (MRC);
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2005.853454
