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一种基于准正交空时码的低复杂度MIMO差分检测方法 被引量:5

A Low Computational Complexity MIMO Differential Detection Scheme Based on Quasi-Orthogonal Space-Time Block Codes
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摘要 针对可实现全速率传输的准正交空时码,提出了一种低复杂度的准正交MIMO差分检测方法.该方法在发射端对数据比特进行联合星座映射,构造准正交空时码进行差分编码;接收端采用最大似然准则对两组星座符号对(symbol pair)并行差分检测.本文提出的星座集合及联合星座映射方法简化了接收端检测算法,降低了检测计算复杂度. A low computational complexity differential detection scheme for Multiple Input Multiple Output system is proposed which is based on the full rate quasi-orthogonal space-time block codes. The transmitted bits are jointly mapped to construct quasi-orthogonal space-time block codes and the codes are used to perform differential encoding, At the receiver,Maximum Likelihood (ML) criterion is used to differentially decode the symbol pairs. The constelation set and joint constelation mapping defined in this paper simplify the detection algorithm and reduce the detection computational complexity.
出处 《电子学报》 EI CAS CSCD 北大核心 2007年第10期1849-1853,共5页 Acta Electronica Sinica
基金 国家自然科学基金(No.60572090 No.60472045 No.60496313) 教育部博士点基金(No.20050614009)
关键词 多入多出 正交空时分组码 准正交空时分组码 差分检测 multiple input multiple output orthogonal space-time block codes quasi-orthogonal space-time block codes differential detection
作者简介 孙德福男,1978年生于黑龙江鸡西,电子科技大学通信抗干扰技术国家级重点实验室博士研究生.主要研究方向为空时编码、MIMO非相干检测技术、分布MIMO等.E-mail:sundf@uestc.edu.cn 唐友喜男,1964年生于河南潢川,电子科技大学通信干扰技术国家级重点实验室教授、博士生导师.主要研究方向为CDMA、OFDM、B3G、UWB、分布MIMO、传感器网络等. 邵士海男,1980年生于辽宁抚顺,电子科技大学通信抗干扰技术国家级重点实验室博士研究生.主要研究方向为分布式多天线信号处理、扩频通信等. 马万治男,1978年生于四川都江堰,电子科技大学通信抗干扰技术国家级重点实验室博士研究生.主要研究方向为空时编码、MIMO非相干检测技术、分布MIMO信道建模等.
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参考文献17

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同被引文献35

  • 1杨柳,谢显中,罗新波.基于能量效率的MIMO系统JT技术性能分析[J].微计算机信息,2008,24(11):90-91. 被引量:1
  • 2郭永亮,朱世华,张国梅.基于正交空时分组码的酉空时码设计[J].电子学报,2006,34(1):123-126. 被引量:4
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