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Turbo decoding on Rayleigh fading channels with noisy channel estimates

Pål Frenger (Institutionen för signaler och system, Kommunikationssystem)
Proceedings IEEE Vehicular Technology Conference, Houston, Texas p. pages 884-888. (1999)
[Konferensbidrag, refereegranskat]

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.

Nyckelord: Turbo decoding; Rayleigh fading channels; channel estimation; BPSK modulation



Denna post skapades 2006-09-12. Senast ändrad 2013-06-17.
CPL Pubid: 15985

 

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Institutioner (Chalmers)

Institutionen för signaler och system, Kommunikationssystem

Ämnesområden

Information Technology

Chalmers infrastruktur