一种在联合发送多用户下行链路中的半联合优化传输算法

A semi-joint optimization transmission algorithm in join ttransmission multiuser downlinks

研究了一种在联合发送多用户下行链路中的半联合优化传输算法及其在时分双工(TDD)系统下的性能分析,其主要目的是为了减小联合发送多用户下行链路中数据传输时产生的符号间干扰和小区内的多址干扰。根据基站发射天线的离开方向(DOD)在全向均匀分布下的空间特性来优化总发射信号,从而减小干扰。并且在TDD系统环境下做了仿真分析,结果说明了这一优化传输算法的误码率性能比传统的联合发送算法和联合检测算法要好,在TDD环境下具有更加良好的应用前景和实施的可行性。

This paper investigates a semi-joint optimal transmission algorithm in joint transmission（JT） multiuser downlinks and its performance in time division duplex （TDD） system, which aims to eliminate intersymbol interference and intracell multiple access interference while data is transmitting in JT multiuser downlinks. To apply the spatial characteristics at base station transmitting antenna in the case of omnidirectional uniform distribution of the direction of departure to optimize the total transmit signal. The simulation results in the TDD system demonstrate that the performance of this algorithm outperform the conventional JT and JD and have better prospect in TDD system.