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用于水声相干通信系统的联合迭代均衡和译码算法 被引量：3

Joint iterative equalization and decoding for underwater acoustic coherent communication systems
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摘要 采用串行级联网格编码调制(SCTCM)技术,高效利用带宽受限的水声信道带宽.同时,为了克服水声信道时变多途衰落,消除码间干扰,运用Turbo迭代原理构建多通道自适应均衡器和SCTCM译码器联合迭代算法.在联合迭代均衡和译码(JIED)算法中,均衡器和译码器通过迭代的方式,交换数据符号的软信息来改善均衡器的性能,从而实现高速、可靠的数据传输.计算机仿真结果表明,使用上述体制的水声通信系统,在高效利用水声信道带宽的同时,利用译码器提供的译码增益,提高了均衡器的数据处理能力,通信系统接收数据的误码率降低了两个数量级. Serially concatenated trellis coded modulation（SCTCM） technology is adopted to improve the bandwidth efficiency of the underwater acoustic channel.In order to overcome multi-path fading and eliminate inter-symbol interference（ISI）,the turbo theory is applied to form the joint iterative multi-channel adaptive decision feedback equalizer（MC-ADFE） and decoder of SCTCM.In the joint iterative equalization and decoding（JIED） algorithm,the MC-ADFE and decoder of SCTCM exchange soft information in an iterative manner,which can enhance the equalizer performance using the significant decoding gain.Simulation results show that the proposed system scheme can improve the performance of the equalizer and lead to a considerable coding gain.So,the performance of the underwater acoustic communication system has been improved greatly.
作者 赵亮 葛建华
机构地区 西安电子科技大学综合业务网理论及关键技术国家重点实验室
出处 《西安电子科技大学学报》 EI CAS CSCD 北大核心 2011年第4期61-65,共5页 Journal of Xidian University
基金 综合业务网理论及关键技术国家重点实验室资助项目(ISNBSH201001)
关键词 水声通信 串行级联网格编码调制 自适应判决反馈均衡 联合迭代均衡和译码 underwater acoustic communication serially concatenated trellis coded modulation（SCTCM） adaptive decision feedback equalizer joint iterative equalization and decoding algorithm（JIED）
分类号 TN929.3 [电子电信—通信与信息系统]
  • 相关文献

参考文献10

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二级参考文献6

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共引文献7

同被引文献27

  • 1张彦昕,孙军,王粤,王嘉.基于VLC和LDPC的联合信源信道译码[J].计算机工程,2006,32(10):215-217. 被引量：1
  • 2赵亮.一种新颖的水声相干通信接收算法[J].声学技术,2007,26(2):291-295. 被引量：1
  • 3殷敬伟,惠俊英,王逸林,惠娟.M元混沌扩频多通道Pattern时延差编码水声通信[J].物理学报,2007,56(10):5915-5921. 被引量：47
  • 4Mandar C, Shiraz S, Stojanovic M. Underwateracoustic communica- tions and networking : recent advances and {uture eb, a),|enges[J]. Ma- rine Technology Society Journal, 2008, 42(1) ： 103 - 116.
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  • 9Otnes R, Eggen T H. Underwater acoustic communications: long-term test of Turbo equalization in shallow water [J]. IEEE Journal of Oceanic Engineering, 2008, 33 (3) :321 - 334.
  • 10Tuehler M, Koetter R, Singer A C. Turbo equalization: princi- ples and new results [J]. IEEE Trans. on Communications, 2002,50(5) ：754 - 767.

引证文献3

二级引证文献5

西安电子科技大学学报
2011年 第4期

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