000 03771nas|a2200469 i 4500
005 20260817173435.0
008 010799s1998 th u m rtt 0| a1eng d
035 _a.b11754199
099 9 _aAIT RSPR no.TC-98-10
100 0 _aKyaw Kyaw Aung
245 1 0 _aComparison of doppler-filter and Markov models in simulation of Doppler shift in mobile radio channels
260 _aBangkok :
_bAsian Institute of Technology,
_c1998
300 _a50 p.
490 1 _aResearch studies project report ;
_vno. TC-98-10
500 _aA research study submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Advanced Technologies
502 _aResearch Studies Project Report (M. Eng.) - Asian Institute of Technology, 1998
520 _aThe estimation of BER for cellular mobile systems becomes increasingly important for the designers to determine acceptable modulation methods, coding techniques, and receiver implementations in the operating environments. Computer simulation is a viable tool in performance evaluation of cellular mobile communication systems. The effect of the Doppler shift due to the movement of mobile stations is an important fact in simulation of mobile radio channels. In modeling of fading channel, Doppler shift due to the motion of mobile station is usually introduced by Doppler filter. The simulation results are reliable but in simulation of mobile radio channels, faster reliable simulation techniques are much desirable. Another model, the first order Markov model can provide a mathematically tractable model for time varying channels. In this research study, we compare the performances of Doppler filter and Markov model in simulation of Doppler shift for the BER estimation of IS-54 TDMA cellular mobile system. The simulation results show that Markov model with symbol period delay does not give reliable results in BER estimation of the cellular mobile system. But Markov model with delay approximately (1/lOfm) gives approximately the same results with Doppler-filter model in BER estimation oflS-54 system.
650 0 _aMobile communication systems
700 1 _aMakelainen, Kimmo,
_eChairperson
700 1 _aSharma, A.B.,
_eExamination Committee
700 1 _aZhang, Jian-Guo,
_eExamination committee
710 2 _aNokia Telecommunications of Thailand Co.,Ltd.,
_eScholarship donor
810 2 _aAsian Institute of Technology.
_tResearch studies project report ;
_vno. TC-98-10
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B13228
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