03229nas|a2200433 i 4500 20260818171540.0 030507s2003 th u m rtt 00| a1eng d .b11924718 AIT RSPR no.TC-03-03 Nguyen Thai Hoang The performance evaluation of PAPR reduction in POFDM and VOFDM systems with ESA and PTS Pathum Thani, Thailand : Asian Institute of Technology, 2003 44 leaves Research studies project report ; no. TC-03-03 A research study submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Advanced Technologies Research report (M.Sc.) - Asian Institute of Technology, 2003 Orthogonal Frequency Division Multiplexing (OFDM), which is a modulation technique for multicarrier communication systems, is a promising candidate for 40 systems since it is less susceptible to intersymbol interference (ISI) introduced in the multipath fading channel. But with appearing of spectral nulls in transmission line, the performance of OFDM systems can be degraded. Therefore, Precoded and Vector OFDM systems are proposed to improve the performance of the OFDM systems in spectral null channel. In addition, beside many of its advantages, OFDM has two major disadvantages: high Peak to Average Power Ratio (P APR) and frequency offset. Hence, the issue of PAPR reduction in POFDM and VOFDM systems is investigated in this research study. P APR of conventional OFDM, POFDM and VOFDM are analyzed with PTS and ESA algorithms. Simulation results show ESA can gain up to 3.5 dB compared to the PTS. BER performance is also investigated for all three systems and results suggests that ESA with 0.8 scaling factor and PTS perform equally in a multipath fading channel with 4 taps. Therefore ESA is a better algorithm to reduce P APR in OFDM, POFDM, and VOFDM systems. Data transmission systems Multiplexing Fernando, W.A.C., Chairperson Ahmed, Kazi Mohiuddin, Examination Committee Teerapat Sanguankotchakorn, Examination Committee Viet Nam Post and Telecommunications (VNPT), Scholarship donor Asian Institute of Technology. Research studies project report ; no. TC-03-03 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B08379 .b11924718 mnait u 240417 0 040507 m a u 4 mnait mnait mnarc 22 40 20 Barcode : 30050120587323 CREATED : 2012-06-12 RECORD # : i1272046x LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120349468 CREATED : 2016-08-06 RECORD # : i13026628 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050211032908 CREATED : 2021-04-30 RECORD # : i13340864 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 86660 86660 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT RSPR no.TC-03-03 30050120587323 2026-08-18 17:15:40 3 2026-08-18 22 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT RSPR no.TC-03-03 30050120349468 2026-08-18 17:15:40 2026-08-18 40 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT RSPR no.TC-03-03 30050211032908 2026-08-18 17:15:40 1 2026-08-18 20