MIMO-OFDM系统ICI自消除改进算法  

Novel ICI Self-cancellation Scheme for MIMO-OFDM System

作　　者：王振朝[1] 张建平[1] 种少飞 

机构地区：[1]河北大学电子信息工程学院,河北保定071002

出　　处：《电视技术》2014年第3期141-145,共5页Video Engineering

摘　　要：现有的ICI自消除算法在提高系统载干比(CIR)的同时会降低系统的抗噪声性能。针对这一问题,提出一种在发送端对数据进行复数加权共轭运算的ICI自消除改进算法,这种算法造成的相位旋转最小,可以有效减少接收信号因相位旋转而导致的相位误差,从而提高系统的抗噪声性能。仿真结果表明,所提算法具有与已有算法相近的ICI抑制能力,但比现有算法具有更好的抗噪声性能。When improving the carrier to interference ratio （CIR）, the existing IC1 seff-canceila/ion algorithm may reduce the anti-noise performance. To solve the problem, a novel ICI self-cancellation scheme that subcarrier signals are remapped in data complex weighted conjugate method is proposed in this paper. The proposed algorithm with the minimum phase rotation can effectively reduce the phase error caused by phase rotation of reeeption signal, which improves the system anti-noise performance. From the simulation, the method both existing algorithm and proposed algorithm ean reduce the ICI effect. Furthermore, the proposed algorithm can reduce the BER of the system.

关 键 词：MIMO—OFDM 载波频偏 子载波间干扰 自消除算法 

分 类 号：TN914[电子电信—通信与信息系统]