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一种低复杂度的消除相位噪声的方法

陈赟1, 曾晓洋1, 陈琛1, 潘安1(复旦大学专用集成电路与系统国家重点实验室,上海 200433)

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。
关键词
A Low-complexity Phase Noise Cancellation Scheme for OFDM System

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Abstract
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.
Keywords

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