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008 121095s1994 th uu m rtt 00| a1eng d
035 _a.b10380358
099 9 _aAIT RSPR no. TC-94-13
100 1 _aGuirnela, Maria Carmela P.
245 1 3 _aAn investigation of the performance of a DS-SSMA system with windowing
260 _aBangkok :
_bAsian Institute of Technology,
_c1994
300 _a53 leaves
490 1 _aResearch studies project report ;
_vno. TC-94-13
500 _aA research submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology
502 _aResearch Studies Project Report (M.Eng.) - Asian Institute of Technology, 1994
520 _aA DS-SSMA system model which applied windowing functions at the transmitter and at the correlator receiver is presented. Two windowing schemes are considered in this study -- the data bit windowing and the chip windowing. An analytical expression for the signal-to-noise interference-ratio (SNR) is developed for both schemes to determine the system performance using various windows. Effects on the correlation of pseudo-noise (PN) sequences are investigated and numerical results are presented. It is shown that both schemes result in an improved lower crosscorrelation values but an unsatisfactorily reduced peak in the autocorrelation function. Based on these resulting characteristics, the system performance is degraded with the use of windowing functions and that the rectangular window, equivalent to no windowing applied, is still unequaled.
650 0 _aSpread spectrum communications
700 1 _aO'Farrell, T.,
_eChairperson (Chairman - upto 31/10/94)
700 1 _aAhmed, Kumar M.,
_eChairperson (Chairman - from 01/11/94)
700 1 _aMakeliiinen, Kimmo,
_eExamination committee
700 1 _aSharma, A.B.,
_eExamination Committee
710 2 _aFinnish International Development Agency (FINNIDA),
_eScholarship donor
810 2 _aAsian Institute of Technology.
_tResearch studies project report ;
_vno. TC-94-13
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B15583
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