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Performance Comparison of Baseband Modulation Methods in DS-CDMA Communication System  

이성민 (국방과학연구소)
김환우 (충남대학교)
Publication Information
Journal of the Korea Institute of Military Science and Technology / v.5, no.1, 2002 , pp. 24-36 More about this Journal
Abstract
It is important to use frequency resource effectively to support much more users, to maximize the DS-CDMA system performance. In this paper, we use MPSK, QAM, MFSK and PR coder as a baseband modulation method for DS-CDMA system. Increasing user's number, we compare the performance of each system using different baseband modulation method, by expecting BER performance. BPSK has generally good performance, in case of low power operation of terminal 8FSK has excellent performance relatively, PR has excellent performance when high power operation of terminal and also good for situation of excessive user's number. QAM is not suitable for DS-CDMA system.
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