High-Efficiency Differential-Chaos-Shift-Keying Scheme for Chaos-Based Noncoherent Communication

被引：174

作者：

Yang, Hua ^{[1
]}

Jiang, Guo-Ping ^{[1
]}

机构：

[1] Nanjing Univ Posts & Telecommun, Sch Automat, Nanjing 210003, Jiangsu, Peoples R China

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2012年 / 59卷 / 05期

关键词：

Chaos communications; correlation delay shift keying (CDSK); differential chaos shift keying (DCSK); noncoherent demodulation; PERFORMANCE ANALYSIS; DCSK;

D O I：

10.1109/TCSII.2012.2190859

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this brief, a new noncoherent chaos-based communication scheme, named high-efficiency differential chaos shift keying (DCSK) (HE-DCSK), is proposed. By recycling each reference sample in DCSK, 2 bits of data can be carried in one data-modulated sample sequence, which offers our scheme double bandwidth efficiency and nonrepeated transmitted signal less prone to interception in comparison to DCSK. The bit-error performance of the proposed scheme is studied analytically based on Gaussian approximation for discrete-time implementations. Simulations in additive-white-Gaussian-noise channel are performed and compared with DCSK and correlation delay shift keying (CDSK) schemes. Results show that the bit-error rate performance of HE-DCSK can always outperform CDSK and be even better than DCSK with typical spreading factors and at reasonable E-b/N-0 levels.

引用

页码：312 / 316

页数：5

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