04025cas|a2200469 a 4500 20260817173149.0 030926s2002 th uu|m rtt 0| a1eng d .b11900143 AIT RSPR no.TC-02-15 Nguyen Viet Hung Combination of array processing and space-time code in MC-CDMA systems Bangkok : Asian Institute of Technology, 2002 47 leaves Research studies project report ; no. TC-02-15 Special Studies Project Report (M.Eng.) - Asian Institute of Technology, 2002 Reducing decoding complexity by combining array processing and space-time codes (STC) helps a communication system using STC to overcome a big obstacle that prevents it from achieving a desired transmission rate. Multi-carrier CDMA (MC-CDMA) is a combination of multi-user access of CDMA and multi-carrier modulation techniques, which allows providing good performance in a channel with high inter-symbol interference. In addition to that, antenna airny, STC and MC-CDMA system have a similar characteristic that transmit-receive data streams are divided into sub-streams. Thus, there may be a noticeable reduction of receiver complexity when we combine them together. In this research study, the combination of array processing and STC in MC-CDMA system over slow selective-fading channel is investigated and compared with corresponding existing MC-CDMA system using STC. Performance comparisons are made in different channel conditions as well as in different transmission rates. All the data are calculated and compared with corresponding simulation parameters in (Maitree, 2000). Simulation results show that combining array processing and STC can provide higher data rate (2 times) while reducing decoding complexity (16 times). However, there is a penalty to be paid for simplified decoding, especially in multipath fading channel. The serious performance degradation is about 10 dB at FER of 0.01 at both the same data transmission rate and double data transmission rate over multipath fading channel in the case of single user system. However, for an A WGN channel combining array processing and STC with 2-STCM shows a negligible degradation (about 1 dB at FER of 0.001) compared with 4-STCM for both single user system and multiuser system. A research submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Advanced Technologies Space and time Code division multiple access Array processors Fernando, W.A.C., Chairperson Ahmed, Kazi Mohiuddin, Examination Committee Erke, Tapio J., Examination Committee Vietnam Post and Telecommunications Corporation (VNPT), Scholarship Donor Asian Institute of Technology. Research studies project report ; no. TC-02-15 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B08017 .b11900143 mnait u 240503 0 030926 m a u 0 mnait mnait mnarc mnarc 22 40 20 Barcode : 30050120552202 CREATED : 2012-03-12 RECORD # : i12719997 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120349419 CREATED : 2016-08-06 RECORD # : i13026549 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050211034284 CREATED : 2021-05-05 RECORD # : i13344511 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050211023386 CREATED : 2022-07-02 RECORD # : i13362598 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 18977 18977 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT RSPR no.TC-02-15 30050120552202 2026-08-17 17:31:49 3 2026-08-17 22 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT RSPR no.TC-02-15 30050120349419 2026-08-17 17:31:49 2026-08-17 40 0 0 0 0 MAIN MAIN mnait 2026-08-17 0 AIT RSPR no.TC-02-15 30050211034284 2026-08-17 17:31:49 1 2026-08-17 20 0 0 0 0 MAIN MAIN mnait 2026-08-17 0 AIT RSPR no.TC-02-15 30050211023386 2026-08-17 17:31:49 2 2026-08-17 20