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Journal of Electrical and Computer Engineering - Volume 2015 2015, Article ID 649096, 6 pages -

Research ArticleSchool of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China

Received 26 March 2015; Revised 15 June 2015; Accepted 2 July 2015

Academic Editor: George S. Tombras

Copyright © 2015 Gang Zhang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A multiuser communication scheme which is a hybrid of Walsh code with DCSK and CDSK is proposed to improve low data transmission rate of Differential Chaos Shift Keying DCSK, poor bit error ratio BER performance of Correlation Delay Shift Keying CDSK, and disadvantage of orthogonality in traditional multiuser DCSK. It not only overcomes the disadvantages of DCSK and CDSK, but also has better performance than CDSK and higher transmission data rate than DCSK. It has been proved that the novel multiuser CDSK-DCSK has better properties than traditional Multiple Input Multiple Output-Differential Chaos Shift Keying MIMO-DCSK and Modified-Differential Chaos Shift Keying M-DCSK. Also the multiuser interference is greatly suppressed due to the orthogonality of Walsh code.

Autor: Gang Zhang, Niting Cui, and Tianqi Zhang



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