一种低复杂度的消除相位噪声的方法  

A Low-complexity Phase Noise Cancellation Scheme for OFDM System

作　　者：陈赟[1] 曾晓洋[1] 陈琛[1] 潘安[1] 

机构地区：[1]复旦大学专用集成电路与系统国家重点实验室,上海200433

出　　处：《中国图象图形学报》2009年第10期2114-2117,共4页Journal of Image and Graphics

基　　金：上海市科委项目(08700741100);国家重点实验室项目(20080202)

摘　　要：正交频分复用(OFDM)易受相位噪声的干扰。本文介绍了一种低复杂度的、基于有限长度的TPS算法的相位噪声消除方法,在相位噪声的频带比较窄的假设下,分析了它的简便性和实用性。仿真结果表明,基于TPS的消除相位噪声的方法,不仅能同时消除公共相位噪声(CPE)和子载波间干扰(ICI),而且在多径信道下,性能损失不大的情况下,大大降低了硬件实现的复杂度。To compensate for the performance degradation induced by phase noise, a low-complexity phase noise cancellation algorithm for OFDM systems is developed in this paper. This method utilizes Transmission Parameter Signaling （TPS） , which are inserted in frames and then are used for signaling parameters. Based on an assumption that finite-length TPS sub-carriers can cover most energy of phase noise, the proposed scheme can remove phase noise effectively and achieve satisfying results of low complexity as well.

关 键 词：正交频分复用(OFDM) 相位噪声 连续传输参数指令(TPS) 数字电视地面广播 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]