OFDM系统中基于部分响应信令的相位噪声抑制方案

2005 5th International Conference on Information Communications & Signal Processing Pub Date : 2005-12-06 DOI:10.1109/ICICS.2005.1689045

Kyung-Hwa Kim, Hyung-Myung Kim

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引用次数: 3

摘要

在正交频分复用(OFDM)系统中，相位噪声会破坏子载波之间的正交性，产生载波间干扰(ICI)，从而导致系统性能下降。本文采用部分响应信号(PRS)来降低相位噪声对ICI的影响。推导了ICI功率与PRS的表达式，得到了使ICI功率最小的最佳PRS系数。仿真结果表明，在不降低带宽效率的情况下，OFDM系统的最佳PRS能明显降低ICI功率

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A Suppression Scheme of the ICI caused by Phase Noise based on Partial Response Signaling in OFDM Systems

Phase noise destroys the orthogonality between sub-carriers in orthogonal frequency division multiplexing (OFDM) systems and creates intercarrier interference (ICI), which results in performance degradation. In this paper, partial response signaling (PRS) is used to reduce the effect of ICI caused by phase noise. The expression of ICI power with PRS is derived and the optimum PRS coefficients that minimize the ICI power are obtained. The simulation results show that the optimum PRS for OFDM systems obviously reduce the ICI power without decreasing the bandwidth efficiency

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2005 5th International Conference on Information Communications & Signal Processing

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