| 大自由距离网格编码的最佳译码和DAPSK的迭代译码 |
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| 引用本文： | 赛和德,吴乐南.大自由距离网格编码的最佳译码和DAPSK的迭代译码[J].应用科学学报,2002,20(3):239-245. |
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| 作者姓名： | 赛和德 吴乐南 |
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| 作者单位： | 东南大学,无线电工程系,江苏,南京,210096 |
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| 摘 要： | 提出一种新的接收机结构 ,用于卷积编码和差分幅度相移键控调制的迭代译码 ,其性能接近于加性高斯白噪声信道上的相干检测 .此外 ,还提出了对于 Lin等人的网格编码结构的最佳译码 ,性能优于其准最佳译码 ,但译码延时要比传统网格编码调制或卷积码的译码延时长 .
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| 关 键 词： | 卷积码 网格编码 网格编码调制 差分幅度相移键控调制 迭代译码 最大似然估计 非相关检测 |
Optimum Decoding of Trellis-coding Scheme with Large Free Distances and Iterative Decoding of DAPSK |
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| Abstract.Optimum Decoding of Trellis-coding Scheme with Large Free Distances and Iterative Decoding of DAPSK[J].Journal of Applied Sciences,2002,20(3):239-245. |
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| Authors: | Abstract |
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| Abstract: | A new receiver for convolutionally coded and differential amplitude phase shift keying modulation using iterative decoding is proposed. Performance close to that of coherent detection over an additive white Gaussian noise channel is demonstrated. Also, an optimum decoding of the trellis code encoded by the schemes proposed by Lin, et al outperforms their suboptimum decoding, even though the decoding delay of each of their schemes and this decoder are longer than that of a conventional trellis coded modulation or convolutional codes. |
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| Keywords: | convolutional codes trellis codes trellis coded modulation differential amplitude phase shift keying modulation iterative decoding a posterior probability estimation noncoherent detection |
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