干扰条件下MIMO中继信道容量分析和传输技术研究

The MIMO relay technology offers a low cost solution to extend the coverage of the system. In addition, the spatial dimensions provided by the MIMO relay technology can be fully exploited to significantly improve the spectral and power efficiency of the system. Therefore, it has been regarded as one of the pivotal components in the construction of future high efficiency mobile communications systems. On the other hand, due to the aggressive frequency reuse approach adopted by the service providers, future mobile communications systems will inevitably operate in an environment impaired by heavy interferences. Therefore, understanding the fundamental capacity limits of MIMO relay channels in the presence of interference, as well as designing highly efficient transmission techniques which are suitable for MIMO relay channels operating in an environment with heavy interference, are important questions to be addressed. To start with, this project first conducts theoretical capacity analysis of MIMO relay channels in the presence of interference, and seeks to extract key design insights by investigating the impact of interference on the performance of MIMO relay channels. Utilizing the developed capacity results, the next key task is to design highly efficient precoders with only partial channel state information at the transmitting nodes. Finally, the last task aims to develop low complexity adaptive transceiver algorithms. The final outcome of this project is a complete transmission solution for MIMO relay channels in the presence of interference, which provides both theoretical supports and design guidelines for the wide implementation of MIMO relay technology in future mobile communications systems.

利用MIMO中继技术，充分发掘空间资源，扩展系统覆盖范围，最大限度地提升系统频谱利用率和功率效率，是构建未来高效能移动通信系统的关键所在。针对未来移动通信系统面临着干扰受限的通信环境这一不可避免的趋势，本项目拟开展干扰条件下MIMO中继信道容量分析和传输技术研究。通过深入分析干扰条件下MIMO中继信道的容量，揭示同信道干扰影响信道容量的作用机理，在此基础上，着力解决发送节点利用部分信道状态信息的预编码设计方案，并致力于提炼低复杂度自适应收发机算法，力争形成干扰条件下完整的MIMO中继信道传输技术方案，为MIMO中继技术在未来移动通信系统中的广泛应用提供理论指导和技术支撑。

利用MIMO中继技术，充分发掘空间资源，扩展系统覆盖范围，最大限度地提升系统频谱利用率和功率效率，是构建未来高效能移动通信系统的关键所在。针对未来移动通信系统面临着干扰受限的通信环境这一不可避免的趋势，本项目开展了干扰条件下MIMO中继信道容量分析和传输技术研究。通过引入有限维随机矩阵理论和多变量统计理论，推导分析了干扰条件下不同配置的多天线MIMO中继信道的容量和差错性能，揭示同信道干扰影响信道容量的作用机理，在此基础上，提出了利用低复杂度线性预编码传输方案进行同信道干扰抑制，以及相应的功率分配策略。项目共表期刊论文21篇，其中IEEE期刊20篇，国际会议论文12篇，授权专利1项，超额完成预定指标（期刊论文4篇，会议论文6篇和专利申请1项）。项目负责人获得2015浙江省自然科学基金杰出青年基金以及2013年亚太地区优秀青年研究学者奖 (IEEE Asia Pacific Outstanding Young Researcher Award)；国际会议 IEEE WCSP 2013最佳论文奖；