项目名称: 全双工中继网络利用干扰信号的分布式空时编码新方法
项目编号: No.61301169
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 无线电电子学、电信技术
项目作者: 刘毅
作者单位: 西安电子科技大学
项目金额: 24万元
中文摘要: 全双工中继网络是下一代无线通信的研究热点,而异步分布式空时编码(A-DSTC)是其提高传输可靠性和扩大覆盖范围的有效途径。由于全双工中继网络固有的环路干扰问题,现有的A-DSTC无法直接应用。 与常规A-DSTC生成矩阵的构造方法不同,本课题从矛盾转化的辩证法角度出发,充分利用环路干扰的"自编码特征"构造生成矩阵,提出了适用于全双工中继网络的低复杂度、满协作分集A-DSTC设计新思路。在深入分析全双工中继网络不同场景干扰机理的基础上,本课题重点开展:1)理想信道信息下的满协作分集A-DSTC设计方法研究;2)非理想信道信息下具鲁棒性的A-DSTC设计方法研究。 本研究不仅可有效解决全双工中继网络由于复杂环路干扰所带来的性能受限问题,而且可大幅度降低中继节点的编码复杂度。研究成果不仅可填补全双工中继网络A-DSTC的设计空白,而且可为构建下一代大容量、广覆盖的无线通信网提供必要的理论支撑。
中文关键词: 全双工;中继网络;空时码;协作分集;
英文摘要: Full-duplex relay networks have attracted increasing attention in the field of the next generation wireless communication networks. The asynchronous distributed space-time coding (A-DSTC) is an effective approach to improving the transmission reliability and extending the coverage in the full-duplex relay networks. However, the existing A-DSTCs cannot be used in the full-duplex relay networks directly because of the inherent loop interference. From contradiction transformation dialectic perspective, this project proposes a novel idea of constructing the generator matrices of the A-DSTCs by using interference signals, which is different from the constructing methods of the existing A-DSTCs' generator matrices. And according to this idea, we propose new ways to design A-DSTCs with low complexity and full cooperative diversity for full-duplex relay networks. Based on the elaborate analysis of the interference mechanism in different scenes of full-duplex relay networks, this project places the research emphasis on: 1) the design methods of full cooperative A-DSTCs with perfect channel information; 2) the design methods of robust A-DSTCs with imperfect channel information. This research can not only provide effective solutions to the problem of performance degradation in full-duplex relay networks because of the comp
英文关键词: Full-duplex;relay networks;space-time codes;cooperative diversity;