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应用科学学报 ›› 2002, Vol. 20 ›› Issue (3): 239-245.

• 论文 • 上一篇    下一篇

大自由距离网格编码的最佳译码和DAPSK的迭代译码

赛和德, 吴乐南   

  1. 东南大学无线电工程系, 江苏南京 210096
  • 收稿日期:2001-03-02 修回日期:2001-10-11 出版日期:2002-09-30 发布日期:2002-09-30
  • 作者简介:赛和德(1957-),male,Iraqi,Ph.D;吴乐南(1952-),male,Anhui Congyang,Professor.
  • 基金资助:
    Project Supported by th e National Natural Science Foundation of China (60072013)

Optimum Decoding of Trellis-coding Scheme with Large Free Distances and Iterative Decoding of DAPSK

SAYHOOD Khalid Hassan, WU Le-nan   

  1. Department of Radio Engineering, Southeast University, Nanjing 210096, China
  • Received:2001-03-02 Revised:2001-10-11 Online:2002-09-30 Published:2002-09-30
  • Supported by:
    Project Supported by th e National Natural Science Foundation of China (60072013)

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被引次数

1

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.

关键词: 网格编码调制, 非相关检测, 网格编码, 差分幅度相移键控调制, 最大似然估计, 卷积码, 迭代译码

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.

Key words: noncoherent detection, trellis-coded modulation, differential amplitude phase shift keying modulation, a posterior probability estimation, convolutional codes, iterative decoding, trellis-codes

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