下一代无线通信系统中的全分集空时分组编码技术

项目名称： 下一代无线通信系统中的全分集空时分组编码技术

项目编号： No.61301104

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： 时龙

作者单位： 南京航空航天大学

项目金额： 25万元

中文摘要： 为了满足人们对快速和可靠通信的巨大需求，下一代无线通信系统需要提供更高的输出速率和更可靠的性能。多天线技术是下一代无线通信系统中关键技术之一，因为它能显著提高无线通信的容量和性能。空时分组编码技术能够最大化空间分集增益，从而提高信号传输的可靠性，是当前多天线技术中的研究热点。如何解决多天线点对点系统中的码率和解码复杂度的折中问题，以及利用空时编码去获得多天线无线网络中的全分集增益，是下一代无线通信系统中需要解决的重要问题。本项目以空时编码技术为研究对象，分别研究多天线点对点和多用户无线网络的系统模型，采用部分干扰消除分组解码技术去实现点对点系统中的快速解码，同时采用分组迫零技术去实现无线网络中用户间的干扰消除，目标是设计高码率和低解码复杂度的空时编码，用来最大化不同系统中的分集增益，从而提高下一代无线通信系统中信号传输的可靠性。

中文关键词： 多用户MIMO；空时编码；计算转发；信道编码；分集增益

英文摘要： Motivated by the huge demands for fast and reliable communications over wireless channels, future wireless communication systems should support higher data rate and more reliable performance. Multiple-input and multiple-output (MIMO) systems have emerged as one of the most significant breakthroughs in future wireless communications, since the multiple antennas can be utilized to increase the transmission rate through multiplexing and improve the reception performance through diversity. To explore the diversity advantage, space-time block coding (STBC) can maximize the spatial diversity and thereby improve the transmission reliability, which has been widely acknowledged as a hot research topic in the MIMO systems. Very recently, there are two interesting and challenging problems in space-time coded MIMO systems: how to well address the tradeoff between code rate and decoding complexity in MIMO point-to-point systems and how to achieve full diversity in MIMO wireless networks. In this project, we will focus on the STBC designs in MIMO point-to-point systems and multiuser wireless networks. At the receiver side, partial interference cancellation group decoding will be utilized to realize the fast decoding in point-to-point systems and group zero-forcing (ZF) receiver is applied to suppress the inter-user interferen

英文关键词： Multiuser MIMO；Space-time block coding；Compute and forward；Channel coding；Diversity gain