【摘要】 本文所提出的预编码生成方法适合在TD-LTE系统中工作,包括基于信道互易性获取信道状态信息模块,能量分配模块,波束形成模块.该方法充分利用了TDD系统的信道互易性特性,获取下行信道的信道状态信息,并使用基于非码本的预编码方式来增强传输的抗干扰性能,提升小区覆盖范围.与单纯考虑无视距LOS(Line-Of-Sight)分量的衰落信道不同,本文所提出的是在接收端天线之间存在空间相关的下行MIMO系统中,针对拥有LOS分量的莱斯(Rice)信道发射机的预编码设计方案.该方案可以保证非码本预编码算法的快速收敛,且保持较低的计算复杂度.更多还原

【Abstract】 This paper proposed a method to generate precoding,which is applicable to the TD-LTE system. This method contains three parts: channel state information( CSI) model,energy distribute model,and beam-forming model. This scheme fully uses the character of exchanging channel for the TDD system,which can obtain the CSI of the downlink channel,and enhances the performance of anti-interference by using the precoding based on the non-codebook. Furthermore,it can enlarge the range of the serving cell. The background of this paper is LTE downlink system equipped with these spatial-correlated receive antennas,where a transmitted precoding method is designed for Rice channel with LOS. This method can keep the precoding algorithm based on non-codebook at a quick convergence speed with lowcalculation complexity.更多还原