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Particle filter with ant colony optimization for frequency offset estimation in OFDM systems with unknown noise distribution

Orthogonal frequency division multiplexing (OFDM) is sensitive to carrier frequency offset (CFO) that causes inter-carrier interference (ICI). In this paper, a particle filter (PF) method augmented with ant colony optimization (ACO) is developed to estimate the CFO. The ACO for continuous domains is...

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Published in:	Signal processing 2011-05, Vol.91 (5), p.1339-1342
Main Authors:	Yu, Yihua, Zheng, Xuanyuan
Format:	Article
Language:	English
Subjects:	Ant colony optimization (ACO) Applied sciences Carrier frequencies Carrier frequency offset (CFO) Colonies Detection, estimation, filtering, equalization, prediction Exact sciences and technology Information, signal and communications theory Multiplexing Noise Offsets Optimization Orthogonal Frequency Division Multiplexing Orthogonal frequency division multiplexing (OFDM) Particle filter Sampling Sampling, quantization Signal and communications theory Signal, noise Simulation Telecommunications and information theory
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creator	Yu, Yihua Zheng, Xuanyuan
description	Orthogonal frequency division multiplexing (OFDM) is sensitive to carrier frequency offset (CFO) that causes inter-carrier interference (ICI). In this paper, a particle filter (PF) method augmented with ant colony optimization (ACO) is developed to estimate the CFO. The ACO for continuous domains is incorporated into PF to optimize the sampling process. Unlike the standard PF, resampling is not required in the method. Moreover, it does not require the noise distribution. Simulation results show that the proposed method is effective when estimating the CFO and can effectively combat the effect of ICI in OFDM systems.
doi_str_mv	10.1016/j.sigpro.2010.12.009
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subjects	Ant colony optimization (ACO) Applied sciences Carrier frequencies Carrier frequency offset (CFO) Colonies Detection, estimation, filtering, equalization, prediction Exact sciences and technology Information, signal and communications theory Multiplexing Noise Offsets Optimization Orthogonal Frequency Division Multiplexing Orthogonal frequency division multiplexing (OFDM) Particle filter Sampling Sampling, quantization Signal and communications theory Signal, noise Simulation Telecommunications and information theory
title	Particle filter with ant colony optimization for frequency offset estimation in OFDM systems with unknown noise distribution
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