03102nam a2200421 4500 20260818144300.0 th eng .b11712041 AIT Thesis no.TC-97-12 Hlaing Minn An investigation into fast simulation of BER for cellular radio on fading channels Bangkok : Asian Institute of Technology, 1997 70 p.: ill. Thesis ; no. TC-97-12 Thesis (M.Eng.) - Asian Institute of Technology, 1997 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering. In performance evaluation of cellular mobile communication systems, simulation is a vital tool and usually conventional Monte Carlo simulation method is used. The simulation results are reliable but the simulation run time may be prohibitively long for very low BER estimation. Although BER of cellular mobile systems is not very low, faster simulation techniques are much desirable in system design because of its high complexity. Importance Sampling (IS) is the most popular fast simulation method but its applicability is quite limited due to its system specific nature. One main problem in IS is system memory or dimensionality and it has been successfully applied to the systems with high dimensionality such as Viterbi decoder and adaptive equalizer. In this study we try to extend the applicability ofIS to a system containing both adaptive equalizer and Viterbi decoder. One IS method, Stochastic Gradient Descent (SGD) algorithm, is applied to IS-54 TDMA cellular mobile communication system with Viterbi equalizer and Viterbi decoder. The simulation results show that SGD can be applied to the BER estimation of Viterbi equalizer output but does not perform well in application to the system containing cascaded Viterbi algorithms. Cellular radio Makelainen, Kimmo, Chairperson Premanandana Rajatheva, Examination committee Sharma, A.B., Examination Committee Government of Finland, Scholarship donor Asian Institute of Technology. Thesis ; no. TC-97-12 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B14103 .b11712041 mnait y 240403 0 980522 m a y 3 mnait mnait mnarc 22 40 20 Barcode : 30050120808810 CREATED : 2014-05-15 RECORD # : i12800193 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050160045760 CREATED : 2016-02-03 RECORD # : i12887900 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050211018261 CREATED : 2022-03-17 RECORD # : i13374254 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 64578 64578 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.TC-97-12 30050120808810 2026-08-18 14:43:00 3 2026-08-18 22 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.TC-97-12 30050160045760 2026-08-18 14:43:00 2026-08-18 40 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.TC-97-12 30050211018261 2026-08-18 14:43:00 1 2026-08-18 20