基于虚拟子载波OFDM系统的低复杂度载波频偏估计

2008 4th IEEE International Conference on Circuits and Systems for Communications Pub Date : 2008-05-26 DOI:10.1109/ICCSC.2008.11

Feng Xinxin, S. Feng

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引用次数: 1

摘要

文献[1]首先提出了一种基于虚拟载波的载波频偏(CFO)最大似然估计器。其主要缺点是计算量大。通过IFFT和分段搜索技术，大大降低了算法的复杂度。在AWGN和典型城市信道(TU)上的仿真结果表明，简化后的ML估计器具有较低的复杂度和与原始估计器相同的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A Low-Complexity Carrier Frequency Offset Estimator for OFDM System with Virtual Subcarriers

A maximum likelihood (ML) estimator of carrier frequency offset (CFO) based on virtual carriers is firstly proposed in [1]. Its main disadvantage is large computational amount. By IFFT and piecewise searching techniques, its complexity is significantly reduced. Simulation results in AWGN and Typical Urban (TU) channels show that the simplified ML estimator has low complexity and achieves the same performance as the original one.

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2008 4th IEEE International Conference on Circuits and Systems for Communications

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