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基于MS估计和迭代结构的信源信道联合解码系统性能分析 被引量：1

Performance Analysis of Joint Source-Channel Decoding Based on MS Estimation and Iterative Structure
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摘要 该文对基于均方MS(Mean Square)误差最小准则估计的软输入信源解码和基于信源参数特性及迭代结构的维特比解码两种信源信道联合解码算法进行分析,分别给出系统性能提高的影响因子,同时与信源信道独立解码算法相比较,并推导了联合算法中的接收参数信噪比的提高幅度以及比特误码率的上限值,证明了联合解码算法的可行性和有效性。实验仿真结果表明了分析方法的正确性。 Based on structure of MS estimation soft-bit source decoding and iterative source-controlled channel decoding, this paper deduces the parameter SNR and BER upper bound for above joint source-channel decoding respectively, and gives the factors which determine the improvement of system performance. The result shows the feasibility of joint source-channel decoding algorithm. Also, simulation proves the validity of analysis process.
作者 周琳 吴镇扬
机构地区 东南大学无线电工程系
出处 《电子与信息学报》 EI CSCD 北大核心 2006年第2期257-261,共5页 Journal of Electronics & Information Technology
基金 国家自然科学基金(60272044)资助课题
关键词 联合解码 参数信噪比 误码上限 Joint source-channel decoding, Parameter SNR, BER upper bound
分类号 TN911.2 [电子电信—通信与信息系统]
作者简介 周琳：女，1978年生，博士生，研究方向为语音、音频信号处理、信源信道联合编码。 吴镇扬：男，1949年生，教授，博士生导师，研究领域为通信系统中的信号处理、智能信号处理、音频、视频信号处理等。
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参考文献8

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同被引文献10

  • 1Ding Lijing, Radwan Ayman, El-Hennawey, Mohamed Samy, and Goubran Rafik A. Performance study of objective voice quality measures in VoIP[C]. IEEE Symposium on Computers and Communications, Aveiro, Portugal, 1-4 July 2007: 197-202.
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  • 3Lee Moon-Keun, Jung Sung-Kyo, Kang Hong-Goo, Park Young-Cheol, and Youn Dae-Hee. A packet loss concealment algorithm based on time-scale modification for CELP-type speech coders [C]. Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03). 2003 IEEE International Conference, Vol.1, 6-10 April 2003: Ⅰ-116-Ⅰ-119.
  • 4Rφdbro Christoffer A, Murthi Manohar N, Andersen S V, and Jensen S H. Hidden Markov model-based packet loss concealment for voice over IP [J]. IEEE Trans. on Audio,Speech, and Language Processing, 2006, 14(5): 1609-1623.
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电子与信息学报
2006年 第2期

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