Title :
Turbo decoding on Rayleigh fading channels with noisy channel estimates
Author_Institution :
Dept. of Signals & Syst., Chalmers Univ. of Technol., Goteborg, Sweden
Abstract :
A new metric for turbo decoding on Rayleigh fading channels with noisy channel estimates is derived. By including the error variance of the channel estimate in the decoder metric derivation, we calculate the correct channel reliability factor for this case. Simulations show that the SNR gain of using this new metric, compared to if we ignore the uncertainty of the channel estimate, may be as large as 1 dB at a bit error probability of 10-3. This gain is obtained without any complexity increase
Keywords :
Rayleigh channels; channel coding; decoding; noise; telecommunication network reliability; turbo codes; 1 dB; Rayleigh fading channels; SNR gain; bit error probability; channel reliability factor; complexity; decoder metric derivation; error variance; noisy channel estimates; turbo decoding; AWGN channels; Additive white noise; Binary phase shift keying; Code standards; Convolutional codes; Decoding; Fading; Gaussian noise; Rayleigh channels; Turbo codes;
Conference_Titel :
Vehicular Technology Conference, 1999 IEEE 49th
Conference_Location :
Houston, TX
Print_ISBN :
0-7803-5565-2
DOI :
10.1109/VETEC.1999.780475
