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PCGC码低复杂度译码算法的研究 被引量:3

A Study on Low Complexity PCGC Decoding Algorithms
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摘要 PCGC是一种将LDPC码运用于并行级联编码形式的信道编码,它的译码采用的是修改后的双层迭代BP(beliefpropagation,置信传播)译码算法.这种译码算法的性能较好,但运算复杂度高,不利于硬件实现.该文介绍两种低复杂度的PCGC迭代译码算法,并通过仿真验证了算法具有非常好的性能. The parallel concatenated gallager code (PCGC), a new kind of channel code which concatenates the low density parity check (LDPC) code in parallel, can be decoded in the two-layer iterative style. The PCGC decoder has good performance, but its high computation complexity interferes with its hardware implement. In this paper two kinds of low complexity PCGC iterative decoding algorithms, and the simulation results prove that the algorithms have excellent performance are proposed.
出处 《应用科学学报》 CAS CSCD 北大核心 2005年第2期140-143,共4页 Journal of Applied Sciences
基金 国家自然科学基金重大项目(60496311)
关键词 低复杂度 迭代译码算法 LDPC码 运算复杂度 信道编码 级联编码 硬件实现 仿真验证 性能 传播 PCGC LDPC code belief propagation algorithm iterative decoding
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参考文献5

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  • 2Behairy H, Chang S C. Parallel concatenated gallager codes [J]. Electron Letter, 2000, 36(24): 2025-2026.
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  • 5Behairy H, Chang S-C. Parallel concatenated gallager codes for CDMA applications [A]. IEEE Global Communication Conference[C]. 2001.11: 1002-1006.

同被引文献25

  • 1史治平,张忠培,李少谦.LDPC码与RS码的联合迭代译码[J].电子科技大学学报,2006,35(S1):657-660. 被引量:4
  • 2Behairy H, Chang S-C, Parallel Concatenated Gallager codes [J]. Electronics Letters (S0013-5194), 2000, 36(24): 2025-2026.
  • 3Gallager R G. Low-Density Parity-Check Codes [J]. IEEE Transactions on Information Theory (S0018-9448), 1962, (1): 21-28.
  • 4Behairy H, Chang S-C. On the design, simulation and analysis of parallel concatenated Gallager codes [C]// Proc. IEEE ICC, May, 2002. USA: IEEE, 2002:1850-1854.
  • 5Behairy H, Chang S-C. Analysis and design of parallel concatenated Gallager codes [J]. Electronics Letters (S0013-5194), 2002, 38(18): 1039-1040.
  • 6Brink S T. Convergence behavior of iteratively decoded parallel concatenated codes [J]. IEEE Transactions on Information Theory (S0018-9448), 2001, 49(10): 1727-1737.
  • 7Chung S Y, Richardson, T J, Urbanke R L. Analysis of sum-product decoding of low-density parity-check codes using a Gaussian approximation [J]. IEEE Transactions on Information Theory (S0018-9448), 2001, 47(2): 657-670.
  • 8Yang M, Ryan W E, Li Y. Design of Efficiently Encodable Moderate- Length High-Rate Irregular LDPC Codes [J]. IEEE Trans. Communication (S0090-6778), 2004, 52(4): 564-571.
  • 9BEHAIRY H,CHANG S.Parallel concatenated gallager codes[J].Electron Letter,2000,36(24):2025-2026.
  • 10GALLAGER R.Low-density parity-check codes[J].IEEE Trans Inform Theory,1962,8(1):21-28.

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