Title :
Bit error probability for an adaptive diversity receiver in a Rayleigh fading channel
Author :
Kaasila, Veli-Pekka ; Mämmelä, Aame
Author_Institution :
VTT Electron., Oulo, Finland
Abstract :
The bit error probability is determined for an adaptive diversity receiver using decision directed feedforward channel estimation. The channel is assumed to be a nonselective Rayleigh fading channel with AWGN. The analysis is valid for all feedforward estimation structures which use an FIR-type estimation filter. The analysis can be applied also to Rake receivers in a frequency selective Rayleigh fading channel. Numerical results are presented for an adaptive diversity receiver which uses either an FIR-type minimum mean-square error (MMSE) filter or a moving average (MA) filter as the estimation filter. The results show that the MA filter performs poorly compared to the MMSE filter at large signal-to-noise ratios and large Doppler spreads. However, at small signal-to-noise ratios and Doppler spreads the filters do not show any remarkable difference in the performance
Keywords :
Doppler effect; FIR filters; Gaussian channels; Rayleigh channels; diversity reception; error statistics; fading; feedforward; filtering theory; moving average processes; probability; radio receivers; AWGN; Doppler spreads; FIR-type estimation filter; MA filter; MMSE filter; Rake receivers; adaptive diversity receiver; bit error probability; decision directed feedforward channel estimation; frequency selective Rayleigh fading channel; minimum mean-square error; moving average filter; nonselective Rayleigh fading channel; signal-to-noise ratios; AWGN; Adaptive filters; Channel estimation; Error probability; Fading; Finite impulse response filter; Matched filters; Multipath channels; RAKE receivers; Rayleigh channels;
Conference_Titel :
Spread Spectrum Techniques and Applications, 1994. IEEE ISSSTA '94., IEEE Third International Symposium on
Conference_Location :
Oulu
Print_ISBN :
0-7803-1750-5
DOI :
10.1109/ISSSTA.1994.379545
