03771nas|a2200469 i 4500 20260817173435.0 010799s1998 th u m rtt 0| a1eng d .b11754199 AIT RSPR no.TC-98-10 Kyaw Kyaw Aung Comparison of doppler-filter and Markov models in simulation of Doppler shift in mobile radio channels Bangkok : Asian Institute of Technology, 1998 50 p. Research studies project report ; no. TC-98-10 A research study submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Advanced Technologies Research Studies Project Report (M. Eng.) - Asian Institute of Technology, 1998 The 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. Mobile communication systems Makelainen, Kimmo, Chairperson Sharma, A.B., Examination Committee Zhang, Jian-Guo, Examination committee Nokia Telecommunications of Thailand Co.,Ltd., Scholarship donor Asian Institute of Technology. Research studies project report ; no. TC-98-10 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B13228 .b11754199 mnait y 240503 0 990701 m a y 0 mnait mnait mnarc mnarc mnarc 22 40 20 Barcode : 30050120552764 CREATED : 2013-11-06 RECORD # : i12732059 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120348866 CREATED : 2016-08-06 RECORD # : i13024942 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050211020671 CREATED : 2022-02-21 RECORD # : i13367997 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050211020663 CREATED : 2022-02-21 RECORD # : i1336800x LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050211020655 CREATED : 2022-02-21 RECORD # : i13368011 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 19908 19908 0 0 0 0 MAIN MAIN mnarc 2026-08-17 50.00 0 AIT RSPR no.TC-98-10 30050120552764 2026-08-17 17:34:35 3 2026-08-17 22 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT RSPR no.TC-98-10 30050120348866 2026-08-17 17:34:35 2026-08-17 40 0 0 0 0 MAIN MAIN mnait 2026-08-17 50.00 0 AIT RSPR no.TC-98-10 30050211020671 2026-08-17 17:34:35 1 2026-08-17 20 0 0 0 0 MAIN MAIN mnait 2026-08-17 50.00 0 AIT RSPR no.TC-98-10 30050211020663 2026-08-17 17:34:35 2 2026-08-17 20 0 0 0 0 MAIN MAIN mnarc 2026-08-17 50.00 0 AIT RSPR no.TC-98-10 30050211020655 2026-08-17 17:34:35 4 2026-08-17 20