相位噪声对OFDM系统性能影响分析  

Analysis of effect of phase noise on the OFDM system performance

作　　者：岳丽[1] 赵旦峰[1] 徐军[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001

出　　处：《应用科技》2007年第1期5-8,50,共5页Applied Science and Technology

基　　金：黑龙江省自然科学基金资助项目(F200503)

摘　　要：作为继CDMA后的又一核心技术,OFDM在各种通信系统中得到了广泛的应用.然而,OFDM系统对相位噪声极其的敏感,会引入共同相位误差CPE(common phase error)和载波间干扰IC I(intercarrier interference),这将极大的降低系统性能.基于维纳相位噪声模型,分析了相位噪声对OFDM系统性能影响,并分别探讨了CPE和IC I对系统性能的影响,重点分析了IC I的相关性质,为OFDM系统中相位噪声消除技术的研究及系统参数设置提供理论参考.As another key technology after CDMA, OFDM has been adopted widely in many communication systems. However, the OFDM systems are very sensitive to the phase noise, causing a random rotation, called CPE （Common Phase Error）, as well as ICI （Intercarrier Interference）, which will degrade the system performance significantly. This paper analyzes the effect of the phase noise on OFDM systems based on the Wiener phase noise model. The effect of CPE and ICI is discussed respectively, and the properties of ICI are discussed in detail.

关 键 词：OFDM 相位噪声 共同相位误差CPE 载波间干扰ICI 

分 类 号：TN91[电子电信—通信与信息系统]