The Journal of China Universities of Posts and Telecommunications

Acta Metallurgica Sinica(English letters) ›› 2013, Vol. 20 ›› Issue (6): 102-108.doi: 10.1016/S1005-8885(13)60115-6

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Simple intra-signal-interference removing detector for HE-DCSK

  

  1. 1. College of Electronic Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China 2. College of Automation, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
  • Received:2013-05-28 Revised:2013-10-14 Online:2013-12-31 Published:2013-12-27
  • Contact: Hua Yang E-mail:yangh@njupt.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (60874091), the Specialized Research Fund for the Doctoral Program of Higher Education of China (20103223110003), the MOE Research in the Humanities and Social Sciences Planning Fund of China (12YJAZH120), the Innovation Project for Graduate Education of Jiangsu Province (CXLX11_0412).

Cited

38

Abstract: In this paper, a novel simple detector is designed to remove the intra-signal interference in high efficiency differential chaos shift keying (HE-DCSK) modulation scheme. With the help of data bit estimated before correlation detection, this new detector could remove the modulated chaotic segment that would form intra-signal interference component in the correlator output from every received information-bearing signal in HE-DCSK, leading to greatly and effectively improved system bit error rate (BER) performance. The effectiveness of this proposed detector is studied analytically based on the numerical integration method and evaluated by computer simulation in additive-white-Gaussian- noise (AWGN) channel. Simulation results reveal that the proposed detector can dramatically improve the overall BER performance of HE-DCSK even at relatively low signal noise ratio (SNR) levels.

Key words: chaos communications, intra-signal interference removing, high-efficiency differential chaos shift keying, bit error rate

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