Volume 2, Issue 1 (3-2010)                   IJICTR 2010, 2(1): 53-63 | Back to browse issues page

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Aminian A M, Molavi-kakhki M. A Hammerstein Diversity Combining Technique . IJICTR. 2010; 2 (1) :53-63
URL: http://ijict.itrc.ac.ir/article-1-271-en.html
1- Modarres Department of Electrical Engineering Ferdowsi University of Mashhad Mashhad, Iran
Abstract:   (1353 Views)

In wireless communication channels fading phenomenon imposes serious limitations upon the system performance. Diversity combining is a well known fading compensation technique. In this paper we propose a diversity combining technique based on a nonlinear Hammerstein type filter to mitigate the destructive fading effect. In the present work, frequency selective Rayleigh fading channels in presence of additive white gaussian noise are considered and m-ary PAM modulation is employed. We first present a theoretical analysis to justify our proposed system. Then the system performance for different power delay profiles and different m-ary PAM modulations are investigated. Comparison of simulation results based on our proposed technique with the results obtained when linear equalizing filters are employed, shows that our technique leads to a considerably higher BER performance at higher SNRs. We also show that our method has a lower complexity than the linear structure. Also, a relative reliability factor for the system is defined and investigated.

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Type of Study: Research | Subject: Information Technology

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