Time-domain equalizer for multicarrier systems in impulsive noise


Tan, Yee Chieh and Ramli, Nordin Bin and Chuah, Teong Chee (2011) Time-domain equalizer for multicarrier systems in impulsive noise. International Journal of Communication Systems, 25 (2). pp. 111-120. ISSN 1074-5351

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In multicarrier communication systems, a time-domain equalizer (TEQ) can be applied to shorten the channel impulse response and to eliminate inter-symbol interference (ISI). However, the presence of impulsive noise in the channel may paralyze the operation of TEQs and subsequently lead to poor error performance. In this paper, a multicarrier receiver that incorporates a constant false alarm rate algorithm and an iterative estimation technique (CFAR-IET) in conjunction with a TEQ is proposed to increase the robustness of the receiver against impulsive noise. Furthermore, an improved version of the CFAR-IET-TEQ scheme, which uses the buffering, sorting, removing and amplitude averaging (BSRA) processes, is presented. Performance comparisons of the proposed schemes with the existing Gaussian-optimized schemes are made. Simulation results show that the BSRA-IET-TEQ scheme is an effective approach to reduce symbol error rate (SER) in impulsive channels while performing satisfactorily in Gaussian channels. Copyright (C) 2011 John Wiley & Sons, Ltd.

Item Type: Article
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering (FOE)
Depositing User: Ms Rosnani Abd Wahab
Date Deposited: 12 Mar 2012 10:00
Last Modified: 22 Jan 2014 03:42
URII: http://shdl.mmu.edu.my/id/eprint/3385


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