03136nas|a2200445 i 4500 20260818144307.0 121095s1994 th uu m rtt 00| a1eng d .b10379265 AIT RSPR no. TC-94-08 Tran Van Su An investigation into the performance of DS-SSMA systems using complex signature sequences Bangkok : Asian Institute of Technology, 1994 53 leaves Research studies project report ; no. TC-94-08 A research submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology Research Studies Project Report (M.Eng.) - Asian Institute of Technology, 1994 In this research study an investigation into performance of direct-sequence spread spectrum multiple-access (DS/SSMA) communications with deterministic complex signature sequences is presented. The Discarding Sorting (DS) and Enhancing Sorting (ES)-Algorithms are introduced to select the good subset with average interference parameter (AIP) criterion. Expressions for the signal to noise ratio (SNR) and the bit error rate (BER) at the output of correlator are derived. These expressions are used to evaluate the SNR and BER performance both as a function of number of simultaneous users and as a Eb/ N 0 . It is shown that the complex sequences can yield better probability of error performance then binary sequences. New users that employ complex signature sequences can be added into existing systems with graceful performance degradation. Spread spectrum communications O'Farrell, T., Chairperson (Chairman - upto 31/10/94) Makelainen, Kimmo, Chairperson Erke, Tapio J., Examination Committee Takahashi, Kenzo, Examination committee Finnish International Development Agency (FINNIDA), Scholarship donor Asian Institute of Technology. Research studies project report ; no. TC-94-08 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B15561 .b10379265 mnait y 240430 2 951012 m a y 3 mnait mnait mnarc mnarc 20 40 Barcode : 30050003116687 CREATED : 1994-05-17 RECORD # : i10473634 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050003116695 CREATED : 1994-05-17 RECORD # : i10473646 LPATRON : 1010738 LCHKIN : 1998-03-22 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 4 TOT RENEW : 2 Barcode : 30050120370308 CREATED : 2016-03-06 RECORD # : i13016167 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050211022081 CREATED : 2022-02-15 RECORD # : i1336618x LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 64608 64608 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT RSPR no. TC-94-08 30050003116687 2026-08-18 14:43:07 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT RSPR no. TC-94-08 30050003116695 2026-08-18 14:43:07 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT RSPR no. TC-94-08 30050120370308 2026-08-18 14:43:07 1 2026-08-18 40 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT RSPR no. TC-94-08 30050211022081 2026-08-18 14:43:07 3 2026-08-18 20