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移动信道下采用软判决译码的自适应多级编码系统 被引量：1

Robust Multilevel Codes with Soft Decision Decoding for Mobile Channels
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摘要 基于信道容量规则和分组分割 ,构造自适应于AWGN和Rayleigh两种信道特征的多级编码系统 ,分量码选用删除型卷积码 ,系统性能与未编码系统和BCH码为分量码的系统作比较 .在多阶段译码中提出利用信道状态信息的软判决支路度量计算公式 ,比较软、硬判决译码对系统性能的影响 。 Based on Capacity Rule and Block Partitioning (BP) strategy,a robust Multilevel Coding (MLC) scheme is proposed for AWGN and Rayleigh fading Channels using punctured convolutional codes.The system performance is compared with that of the uncoded 4ASK system and the MLC with BCH codes.The formulations for computing the soft decision metrics with Channel State Information (CSI) are presented for multistage decoding (MSD) and the performance comparisons are made for soft and hard decision decoding.The research can present some references for the optimal design of Multilevel Coding schemes.
作者 隋爱芬 袁东风 张锋 杨义先
机构地区 北京邮电大学 山东大学电子工程系
出处 《电子学报》 EI CAS CSCD 北大核心 2002年第11期1694-1696,共3页 Acta Electronica Sinica
基金 东南大学移动通信国家重点实验室开放基金 (No W990 0 1 ) 国家重点基础研究发展规划项目 (No G1 9990 3580 5) 国家杰出青年基金(No 6942 50 0 1 ) 国家自然科学基金 (No 69872 0 2 0 69882 0 0 2 60 0 730 4 9)
关键词 移动信道 软判决译码 自适应 多级编码系统 信道容量规则 分组分割 软判决Viterbi算法 multilevel coding capacity rule block partitioning soft decision Viterbi decoding
分类号 TN911.2 [电子电信—通信与信息系统] TN92 [电子电信—通信与信息系统]
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参考文献7

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同被引文献27

  • 1Calderbank A R. The Art of Signaling: Fifty Years of Coding Theory[J]. IEEE Trans. Inform. Theory, 1998,44(6) :2561 - 95.
  • 2Costello D J, Hagenauer J, Imai H, et. al. Application of Error-Control Coding[J]. IEEE Trans. Inform. Theory,1998,44(6) :2531 - 60.
  • 3Fomey G D, Ungerboeck G. Modulation and Coding for linear Gaussian Channels[J]. IEEE Trans. Inform. Theory, 1998,44(6) :2384 - 2415.
  • 4Chung S Y, Fomey G D, Richardson T J, et. al. On the Design of Low-Density Parity-Check Codes Within 0. 0045dB of the Shannon Limit [J]. IEEE Commun. Letters,2001,5(2) :58 - 60.
  • 5Ezio B, Politecnico D T. Digital Transmission in the 21st Century: Conflating Modulation and Coding [J]. IEEE Commun. Magazine. 50th Anniversary Commemorative Issue, May. , 2002,40(5): 128 - 137.
  • 6Viterbi A J. Wireless Digital Communication: A View Based on Three Lessons Learned [J]. IEEE Commun.Mag., 1991,29(9) :33 - 36.
  • 7Benedetto S, Giglieri E. Principles of Digital Transmission with Wirdess Applications [M]. New York: Kluwer Plenum, 1999.
  • 8Tarokh V, Seshadri N, Calderbank A R. Space-Time Codes for High Data Rate Wireless Communication: Performance Criterion and Code Construction [J]. IEEE Trans. Inform. Theory, 1998,44(2):744-65.
  • 9Sandhu S, Heath R, Paulrai A. Space-Time Block Codes Versus Space-time Trellis Codes[A]. Proceedings of the International Conference on Communications[C]. Helsinkd Finland: IEEE Press, 2001. 1132 - 1136.
  • 10Wachsmann U, Fischer F H, Huber J B. Multilevel Codes: Theoretical Concepts and Practical Design Rules [J]. IEEE Trans. On Information Theory, 1999,45(5):1361 - 1391.

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电子学报
2002年 第11期

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