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    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:[通訊工程研究所] 期刊論文

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