A New Channel Reliability Value for Iterative MAP Turbo Decoder

Lee, Keunhyung; Lee, Huisoo; Lee, Yongwook; Lee, Ji‐Hyun; Oh, Wangrok

doi:10.1109/wimob.2008.97

Cited by 3 publications

(2 citation statements)

References 6 publications

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“…A number of previous works have noticed that the Log-1601 ___________________________________ 978-1-4244-5900-1/10/$26.00 ©2010 IEEE MAP algorithm can keep its decoding performance, or even performs better when the channel SNR is slightly underestimated [3][4]7]. In [7], Lee et al proposed an empirical result that the BER performances over the AWGN channels are optimized when the channel SNR estimation offset is…”

Section: Snr Underestimation Analysismentioning

confidence: 99%

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A simplified method for turbo decoding over Rayleigh fading channels

Wan

2010

IEEE 10th INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING PROCEEDINGS

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In this paper, we investigate the signal-to-noise ratio (SNR) sensitivity of the Log-MAP turbo decoder over Rayleigh fading channels. It is shown that the use of the channel reliability factor proposed by Frenger is equivalent to an SNR underestimation when the channel estimate is not perfect. In addition, we propose s simplified method to compute the channel reliability factor, which leads to reduction of the computing complexity while causes no performance degradation.

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Section: Snr Underestimation Analysismentioning

confidence: 99%

“…In [7], Lee et al proposed an empirical result that the BER performances over the AWGN channels are optimized when the channel SNR estimation offset is…”

Section: Snr Underestimation Analysismentioning

confidence: 99%