多小区联合检测中的空时编码干扰信号高效抑制  

A Novel Interference Suppression Scheme for Space-time Coding Interference Signals in Multi-cell Joint Detection

作　　者：张晓珊 姜述超 苏冬良 ZHANG Xiaoshan;JIANG Shuchao;SU Dongliang(Department of Communication Science and Engineering, Fudan University, Shanghai 200433)

机构地区：[1]复旦大学通信科学与工程系

出　　处：《微型电脑应用》2019年第6期81-84,共4页Microcomputer Applications

摘　　要：现代蜂窝通信系统中,由于小区间的互相干扰,小区边缘用户成为性能提升的瓶颈.针对这一问题,本文考虑采用多小区联合检测来提高小区边缘用户的性能,重点关注干扰信号采用空时编码时的检测问题.通过将相关符号周期的传输综合建模,本文提出了一种联合最小均方误差(Joint-Minimum Mean-Squared Error,J-MMSE)检测算法;并分别讨论了服务小区采用空时编码和空分复用传输时的算法设计.仿真结果表明,与传统检测算法相比,所提的J-MMSE检测算法,可以以较低的复杂度获得显著的性能增益;为多小区联合检测提供了一个有吸引力的选择.In modern cellular communication systems, due to the interference from neighbor cells, the performance of cell-edge users becomes the bottleneck of the whole system. To solve the problem, this paper discusses the multi-cell joint detection schemes, focusing focuses on the suppression of interference signals with space-time coding. By combining the transmissions in all relevant symbol periods, we propose a Joint-Minimum Mean-Squared Error (J-MMSE) detection algorithm;and detail its applications in the scenarios where the target signal is transmitted with space-time coding or spatial multiplexing, respectively. The simulation results show that the proposed J-MMSE scheme can achieve a significant performance gain over traditional designs with low complexity, which provides an attractive option for multi-cell joint detection.

关 键 词：MIMO ALAMOUTI MMSE 检测算法 

分 类 号：TN92[电子电信—通信与信息系统]