Cited By
View all- Imad RHoucke SGhogho M(2010)Blind estimation of the phase and carrier frequency offsets for LDPC-coded systemsEURASIP Journal on Advances in Signal Processing10.1155/2010/2935722010(1-13)Online publication date: 1-Feb-2010
Comparison of LDPC decoding algorithms with and without estimation of noise variance
Pages 3 - es
Abstract
The original sum product algorithms (SPA) of LDPC decoding in AWGN channel require the knowledge of noise variance. Mini-sum algorithm need not the variance estimation but has performance degradation. If the assumed noise variance of SPA algorithm deviates largely from the true value, the performance also degrade seriously. In this paper, an iterative noise variance estimation algorithm using the decoded data is presented. The true noise variance is then substituted by the estimated one. The computational load is analyzed. Performance difference between SPA, Mini-sum algorithm and our algorithm are compared by simulations.
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T. J. Richardson, R. Urbanke. "The capacity of low-density parity-check codes under message passing decoding," IEEE Trans. on Info. Theory. 2001, vol. 47, no. 2, pp 599--618.
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- Comparison of LDPC decoding algorithms with and without estimation of noise variance
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October 2006
408 pages
ISBN:1595935193
DOI:10.1145/1292331
Copyright © 2006 ACM.
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Published: 25 October 2006
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View all- Imad RHoucke SGhogho M(2010)Blind estimation of the phase and carrier frequency offsets for LDPC-coded systemsEURASIP Journal on Advances in Signal Processing10.1155/2010/2935722010(1-13)Online publication date: 1-Feb-2010
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