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Author: search.filters.author.Inchan, T.

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    Analytical study of signal processing on WiMAX system via physical layer simulation build on IEEE802.16 standard
    (2012-12-01)
    Inchan, T.
    ;
    Benjangkaprasert, C.
    IEEE802.16, which known as WiMAX technology, that is a promised broadband wireless technology that promises high-speed data services up to the costumer end. The aim of this paper is the study of the performance evaluation of a WiMAX system, which building physical layer block models, build on IEEE802.16 standards. The model simulate for study and analysis in the effects of difference transmission channel condition consist of AWGN channel and Rician fading channel concatenated. © 2012 IEEE.
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    Adaptive forgetting factor RLS algorithm equalizer for DS-CDMA system based on adaptive Laguerre lattice filter
    (2011-08-12)
    Charoenphol, A.
    ;
    Inchan, T.
    ;
    Benjangkaprasert, C.
    A new RLS adaptive algorithm with variable forgetting factor for direct sequence code division multiple access (DS-CDMA) communication system is presented. Intersymbol interference (ISI) arises due to multipath propagation, which destroys the code orthogonality, gives rise to multiple access interference(MAI). Therefore, the objective of this paper is to minimize the effect of ISI with a long impulse response environment based on the proposed receiver. We consider an adaptive Laguerre lattice equalizer which applies an optimal method based on the variable step-size least mean square (VSLMS) algorithm for adaptable forgetting factor RLS algorithm to improve bit error rate (BER) performance of the receiver. © 2011 IEEE.
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    Adaptive Laguerre filter for DS-CDMA multi-user communication system
    (2010-05-28)
    Benjangkaprasert, C.
    ;
    Inchan, T.
    In this paper proposes a receiver for direct sequence-code division multiple access (DS-CDMA) multi-user communication system based on Laguerre filter and the recursive least squares (RLS) adaptive algorithm. Intersymbol interference (ISI) is usually caused by multipath propagation and the inherent non-linear frequency response of a channel. Therefore, the objective of this paper is to minimize the effects of ISI with a long impulse response environment based on the proposed receiver. Because of the stability of Laguerre structure is compromise between the finite impulse response (FIR) filter and infinite impulse response (IIR) filter. It can improve the bit error rate (BER) performance of the proposed receiver compared to the conventional FIR filter receiver. The simulation results show that the performances of the proposed receiver in terms of BER and the stability are better than does the conventional FIR filter receiver. ©2010 IEEE.