文章基本信息

标题：Multiuser BER Analysis Of CS-QCSK Modulation Scheme in a Cellular System
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作者：K.Thilagam ; K.Jayanthi
期刊名称：International Journal of Wireless & Mobile Networks
印刷版ISSN：0975-4679
电子版ISSN：0975-3834
出版年度：2012
卷号：4
期号：6
出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：In recent years, chaotic communication is a hot research topic and it suits better for the emerging wireless networks because of its excellent features. Different chaos based modulation schemes have evolved, of which the CS-DCSK modulation technique provides better BER performance and bandwidth efficiency, due to its code domain approach. The QCSK modulation technique provides double benefit: higher data rate with similar BER performance and same bandwidth occupation as DCSK. By combining the advantage of code shifted differential chaos shift keying (CS-DCSK) and Quadrature chaos shift keying (QCSK) scheme, a novel modulation scheme called code shifted Quadrature chaos shift keying (CS-QCSK) is proposed and its suitability in a multiuser scenario is tested in this paper. The analytical expressions for the bit-error rate for Multi-user CS-QCSK scheme (MU-CS-QCSK) under Rayleigh multipath fading channel is derived. The simulation result shows that, in multiuser scenario the proposed method outperforms classical chaotic modulation schemes in terms of bit error rate (BER).
关键词：Differential chaos shift keying (DCSK) ; Quadrature chaos shift keying (QCSK); Code shifted;differential chaos shift keying (CS-DCSK); code shifted Quadrature chaos shift keying ( CS-QCSK);Multiuser code shifted Quadrature chaos shift keying ( MU-CS-QCSK); Bit Error Rate(BER).