| 摘要: |
| 提出了Turbo乘积码的并行迭代译码原理，对比分析了一种新的并行迭代译码器和传统的串行译码器，给出了以扩展汉明码(32，26，4)、(64，57，4)为子码的二维Turbo乘积码(32，26，4)。、(64，57，4)。在通过两种不同的译码器时的仿真结果。仿真结果表明，采取并行迭代译码器，在保持同样的译码性能的同时降低了译码延时。 |
| 关键词: 并行／串行迭代译码 非本征信息 对数似然比 Turbo乘积码 |
| DOI：10.3969/j.issn.1001-893X. |
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| 基金项目:国家863计划项目(2001AA121031) |
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| Comparison between Two Classes of Iterative Decoder for Turbo Product Codes |
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| Abstract: |
| This paper presents the principle of parallel iterative decoding of Turbo Product Codes(TPCs), comparatively analysizes a kind of new parallel iterative decoder and traditional serial decoder.Finally,the simulation results of 2-D Turbo Product Codes (32,26,4)~2,(64,57,4)~2 based on a subcode of extended Hamming (32,26,4),(64,57,4) with two classes of iterative decoder are given.The results show that with the new parallel approach, decoding latency of TPCs can be halved while maintaining virtually the same performance level. |
| Key words: Parallel/Serial iterative decoding,Extrinsic information,Log likelihood ratio,Turbo product codes |
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