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用于多址接入信道的LDPC码优化设计

DOI: 10.13190/jbupt.200803.9.zhangx, PP. 9-12

Keywords: 低密度校验码,多址接入信道,高斯近似,密度进化,差分进化

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Abstract:

将低密度校验码(LDPC)用于多址接入信道,直接采用不同的校验矩阵作为区分用户的唯一特征;采用一种简化算法对多址接入信道因子节点的消息进行更新,并为多用户低密度校验码的消息传递过程设计了高斯近似密度进化算法,在此基础上用差分进化算法对非规则低密度校验码的度序列进行优化设计.分析和仿真结果表明,所设计的非规则低密度校验码在多址接入信道中具有良好性能.

References

[1]  Ahlswede R. Multi-way communication channels//Tsahkadsor, Armenian S S R. IEEE Proc of IEEE Intern Symp on Inform Theory. : House of the Hungarian Acad of Sci, 1971: 103-135.
[2]  Cover T M. Some advances in broadcast channels, advances in communication systems[M]. New York: Academic, 1975. 229-260.
[3]  Wyner A D. Recent results in the Shannon theory[J]. IEEE Trans Inform Theory, 1974(IT-20): 2-10.
[4]  Li Ping, Liu Lihai, Wu Keying, et al. Interleave division multiple-access[J]. IEEE Trans Wireless Com, 2006, 5: 938-947.
[5]  Richardson T, Shokrollahi A, Urbanke R. Design of capacity-approaching irregular low-density parity-check codes[J]. IEEE Trans Inform Theory, 2001(47): 619-637.
[6]  Abdelaziz Amraoui, Sanket Dusad, Ruediger Urbanke. Iterative coding for discrete-time multiple access channel//Proc of IEEE Intern Symp on Inform Theory Laisanne. Switzerland: ISIT, 2002: 324-334.
[7]  Kschischang F R, Frey B J, Loeliger H A. Factor graphs and the sum-product algorithm[J]. IEEE Trans Inform Theory, 2001, 47: 498-519.
[8]  Sae-Young Chung, Richardson T, Urbank R. Analysis of sum-product decoding of low-density parity-check codes using Gaussian approximation[J]. IEEE Trans Inform Theory, 2000 (47): 657-670.
[9]  Storn R, Price K. Minimizing the real functions of the ICEC' 96 contest by differential evolution//IEEE Proc of IEEE Inter Conf on Evolutionary Computation. Nagoya: , 1996: 842-844.

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