TD-LTE-Advanced系统中一种新型8天线双码本设计方法

发布时间：2018-05-29 17:14

本文选题：TD-LTE-advanced + 预编码　；参考：《北京邮电大学学报》2014年05期

【摘要】：提出了一种新型8天线双码本设计方法,有效提高了TD-LTE-Advanced系统频谱效率.该方法根据层映射的层数对码本分组,层数为1、2及5~8时,利用R8协议中4天线码本的满秩矩阵生成码本;层数为3、4时,将离散傅里叶变换矩阵与循环延迟分集技术相结合构造新码本.与R10协议中给出的8天线双码本相比,在反馈开销相同的情况下,新码本码字间距更大.仿真结果表明,在8发2收层数为2的条件下,新码本增益提高2dB以上;当信噪比为5 dB时,新码本比现有码本的频谱效率高15%以上.
[Abstract]:A new design method of 8-antenna dual codebook is proposed, which can effectively improve the spectrum efficiency of TD-LTE-Advanced system. In this method, according to the layer number of layers mapped, the number of layers is 1 / 2 and 5 ~ 8, and the full rank matrix of the 4 antenna codebook in R8 protocol is used to generate the codebook, when the number of layers is 3, 4, A new codebook is constructed by combining discrete Fourier transform matrix with cyclic delay diversity technique. Compared with the 8-antenna dual-codebook given in R10 protocol, the new codebook has a larger codebook spacing under the same feedback cost. The simulation results show that the gain of the new codebook increases by more than 2dB when the number of received layers is 2, and the spectral efficiency of the new codebook is more than 15% higher than that of the existing codebook when the SNR is 5 dB.
【作者单位】：河北工业大学信息工程学院;天津市电子材料与器件重点实验室;
【基金】：天津市高等学校科技发展基金项目(20120715) 河北省高层次人才项目(C2013001048)
【分类号】：TN929.5

【参考文献】