OFDM系统中相位噪声的影响及ICI自消除方案  

The Effects of Phase Noise and ICI Self-cancellation Scheme in OFDM Systems

作　　者：金龙保[1] 卢结成[1] 

机构地区：[1]中国科学技术大学电子科学与技术系,合肥230026

出　　处：《无线通信技术》2005年第1期18-22,共5页Wireless Communication Technology

摘　　要：相位噪声也能引起信道间干扰( ICI) ,本文系统的分析了采用ICI自消除方案前后相位噪声对OFDM系统的影响,得出了载波干扰比和信噪比的近似计算公式,在AWGN信道上仿真了系统的误码性能。从仿真结果看。The phase noise can also cause the inter sub-carrier interference(ICI),the effects of phase noise were analyzed in OFDM systems with or without the ICI self-cancellation scheme ,derived the approximate calculation formula of carrier to interference ratio(CIR) and signal noise ratio(SNR) and the BER performance was also simulated on AWGN channel. The simulation results demonstrate the ICI self-cancellation scheme can obviously improve the CIR and bit error ratio.

关 键 词：OFDM系统 相位噪声 ICI自消除 载波干扰比 多载波调制技术 

分 类 号：TN911.4[电子电信—通信与信息系统] TN929.53[电子电信—信息与通信工程]