基于无线信道的软干扰抵消Turbo均衡技术研究  

Soft ISI Cancellation for Turbo Equalization Research Based on Wireless Communication

作　　者：郭淑霞[1] 韩琮[1] 陈志坤[1] 黄国栋[1] 

机构地区：[1]西北工业大学无人机特种技术国家级重点实验室,陕西西安710072

出　　处：《计算机测量与控制》2009年第7期1393-1395,共3页Computer Measurement &Control

基　　金：航天科技基金项目(N7CH002)

摘　　要：介绍了应用于无线信道的Turbo均衡技术,针对MAP均衡算法的计算复杂度较高,提出了一种改进的基于软干扰抵消(SIC)的turbo均衡算法,该方法运用信道译码器输出的全部信息做先验信息进行迭代传递,充分利用了软信息;在给定的无线信道下进行了仿真与分析,仿真结果表明,在不增加计算复杂度的情况下,改进的SIC算法与传统SIC算法相比,在误码率为10-4时性能有近1.5dB的性能增益,与MAP均衡算法性能相近,有效地提高了通信可靠性。The paper discusses Turbo Equalization which is applied to wireless communication, in order to reduce the complexity of MAP algorithm, we propose the use of the full soft output channel decoder＇s information for the turbo interference canceller. A simulation based on a given wireless channel has been made. The simulation results represent that performances are close to each other between improved SIC and MAP, the gain is 1.5dB at 10 4of BER compared with SIC, and the performance gain is achieved without any increase of computational complexity. The improved SIC method improves the reliability of wireless communication.

关 键 词：TURBO原理 TURBO均衡 符号间干扰 软干扰抵消 

分 类 号：TN929.5[电子电信—通信与信息系统] TN911.7[电子电信—信息与通信工程]