摘要
预编码技术是毫米波多输入多输出(MIMO)系统中常用的一种可以用来提高频谱效率的技术。相较于传统的全数字预编码技术,混合预编码能够大大减少射频(RF)链的数量,更适合毫米波系统。提出了一种基于奇异值分解(SVD)和几何均值分解(GMD)相结合的混合预编码矩阵设计方法。通过MATLAB仿真分析可知,相较于基于正交匹配追踪(OMP)算法的预编码设计方法,文章提出的算法性能更优,频谱效率更接近最优全数字预编码方法,且具有更好的误码率。
The precoding technique is a technique commonly used in millimeter-wave multiple-input multiple-output （MIMO） systems that can be used to improve spectral efficiency. Compared with the traditional full-digital precoding methodhybrid pre-ceding can greatly reduce the number of radio frequency （RF） chain, more suitable for mm Wave system. In this paper, a hybrid precoding matrix design method based on singular value decomposition （SVD） and geometric mean decomposition （GMD） is proposed. Compared with the precoding design method based on orthogonal matching tracing （OMP） algorithm, the proposed algorithm has better performance and better spectral efficiency,the spectral efficiency is closer to the optimal full-digital preco-ding method, and has better bit errorrate.
出处
《信息通信》
2017年第12期75-78,共4页
Information & Communications
