Least Squares/Maximum Likelihood Methods for the Decision-Aided GFSK Receiver

NCUIR > College of Electrical Engineering & Computer Science > Graduate Institute of Communication Engineering > journal & Dissertation > Item 987654321/29080

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/29080

Title:	Least Squares/Maximum Likelihood Methods for the Decision-Aided GFSK Receiver
Authors:	Chang,DC
Contributors:	通訊工程研究所
Keywords:	FREQUENCY OFFSET;JOINT FREQUENCY
Date:	2009
Issue Date:	2010-06-29 20:12:48 (UTC+8)
Publisher:	中央大學
Abstract:	Gaussian frequency shift keying (GFSK) modulation is widely used in low data-rate wireless audio/video transmission and personal communication standards like Bluetooth. In this letter, least squares (LS) and maximum likelihood (ML) methods are exploited for decision-aided carrier recovery in a GFSK receiver. Through the analysis of estimation error variance, we show that the LS/ML carrier frequency offset estimation method outperforms the conventional method using the DFT approach. Besides, the new method is also effective to deal with non-DC-free data sources. Simulation results show that the new decision-aided GFSK receiver achieves better results than the feedforward receivers with DC-free and non-DC-free sources.
Relation:	IEEE SIGNAL PROCESSING LETTERS
Appears in Collections:	[Graduate Institute of Communication Engineering] journal & Dissertation

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