项目名称: 星座关联的非线性空时编码技术研究
项目编号: No.61271253
项目类型: 面上项目
立项/批准年度: 2013
项目学科: 无线电电子学、电信技术
项目作者: 朱义君
作者单位: 中国人民解放军信息工程大学
项目金额: 75万元
中文摘要: 无论是在相干,还是非相干条件下,空时编码都可以充分挖掘MIMO系统的分集和复用等诸多方面的潜能。本项目引入唯一可分解星座对(UFCP)的概念,在现有全分集、全速率、低复杂度检测等线性空时分组码的基础上,利用UFCP使得原本相互独立的符号间产生某种关联性,从而构造出一种非线性空时编码,进一步提升了空时编码的传输性能。项目着重研究三个方面的问题:一是针对常见调制星座,设计最优的可唯一辨识的子星座分解方法;二是针对现有典型线性空时编码,研究相干和非相干条件下,非线性关联关系的构建方法,星座间资源分配方法以及快速检测算法;三是在相干条件下,利用信道互易性,提取信道对等参数,研究有效的信道随机参数到关联矩阵的映射方法。通过本项目的研究,将可以进一步提高空时编码的传输性能和物理层安全性能,必将在未来无线通信的实际应用中发挥重要作用。
中文关键词: 多输入多输出;星座关联;空时编码;乘性唯一可分解;加性唯一可分解
英文摘要: For both coherent and noncoherent communications,space-time code can make the best of MIMO system in terms of diversity and multiplexing potential.By utilizing the conception of UFCP(Uniquely Factorized Constellation Pair),a novel non-linear space-time coding scheme is proposed based the existing code with full-diversity,full-rate and low-complexity detection.The relevant collaborated constellations from UFCP form cooperative modulated symbols rather the independent ones,further enhancing the system transmission performance in terms of coding gain.Three aspects are involved. Firstly,the uniquely identifid method of optimal design for common constellations is to be researched.Secondly,for existing MIMO linear space-time code,the non-linear collaboration scheme,resources allocation among constellations and corresponding fast detection algorithm to be explored. Thirdly, the mapping scheme from reciprocal channel parameters to collaborative constellation is to be researched.By the research, it is hoped that the system transmission performance and security from physical layer will be enhanced.Furtherly,the investigation,development and application in the wireless communications are going to be promoted.
英文关键词: MIMO;constellation collaboration;space-time coding;multiplicatively uniquely factorable constellation;additively uniquely decomposable constellation