新型上行链路非码本预编码的传输方法

New Uplink Transmission Method with Non-Codebook Based Precoding

提出了新型上行链路非码本预编码传输方法,可用于局域网或广域网无线通信系统中.本方法包含发送端基于几何均值分解预编码算法和接收端正交三角(QR)分解的混合并行干扰消除/串行干扰消除(PIC/SIC)检测算法两部分.本传输方法克服了现有上行链路码本预编码复杂以及反馈码本序号占用信道资源的缺点,在几何均值分解预编码基础上,对QR分解的混合并行干扰消除/串行干扰消除检测算法进行了分析和仿真.仿真结果表明几何均值分解预编码结合接收端QR分解的混合PIC/SIC检测算法性能较好、复杂度较低,有利于应用于无线局域网上行接收端的信号检测.

An uplink transmission non-codebook based precoding method is proposed which can be used in local area network or wide area network wireless communication systems.The new method is based on the geometric mean decomposition（GMD） decomposition precoding and the mixed parallel interference cancellation/serial interference cancellation（PIC/SIC） detection based on orthogonal-triangular（QR） decomposition algorithms.Two main disadvantages of complex algorithm of uplink transmission with codebook based precoding and the wide bandwidth occupying of the codebook numbers for feedback are overcomed.Simulation shows that the performance of the mixed PIC/SIC based on QR decomposition detection algorithm applied in our transmission method can be improved,and the complexity of mixed PIC/SIC algorithm is lower than that of codebook based precoding methods.The proposed transmission method is appropriate for detecting received signals in wireless local area network uplink devices.