General Carrier Index Aided Dual-Mode Differential Chaos Shift Keying With Full Mapping: Design and Optimization

被引:13
作者
Cai, Xiangming [1 ]
Xu, Weikai [1 ]
Hong, Shaohua [1 ,2 ]
Wang, Lin [1 ]
Zhang, Lin [3 ,4 ]
机构
[1] Xiamen Univ, Dept Informat & Commun Engn, Xiamen 361005, Peoples R China
[2] Xiamen Univ, Shenzhen Res Inst, Shenzhen 518000, Peoples R China
[3] Sun Yat Sen Univ, Sch Elect & Informat Technol, Guangzhou 510006, Peoples R China
[4] Southern Marine Sci & Engn Guangdong Lab, Zhuhai 519000, Peoples R China
关键词
Indexes; Chaotic communication; Synchronization; Frequency modulation; Decontamination; Codes; Receivers; differential chaos shift keying; dual-mode signal; full mapping; noise decontamination; DIGITAL-COMMUNICATIONS; MODULATION TECHNIQUES; PERFORMANCE ANALYSIS; COMMUNICATION; DCSK; SYNCHRONIZATION; SCHEME; SYSTEM;
D O I
10.1109/TVT.2021.3113315
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 paper, we propose a general carrier index assisted dual-mode differential chaos shift keying with full mapping (GCI-DM-DCSK-FM) system, where a pair of distinguishable modem-mode signals is designed with the aid of general carrier index modulation. Specifically, the selected and unselected subcarriers are used to carry differential chaos shift keying (DCSK) and quadrature chaos shift keying (QCSK) signals, respectively, thereby obtaining higher data rate and spectral efficiency. To tackle the issue of discarding the subcarrier activation pattern (SAP), an effective full mapping method is proposed for the GCI-DM-DCSK-FM system to harvest better bit error rate (BER) performance and higher data rate. Moreover, a noise decontamination method is designed for the GCI-DM-DCSK-FM system to enhance the BER performance. To confirm the validness for our proposed systems, we derive the BER expressions of the GCI-DM-DCSK-FM system over additive white Gaussian noise (AWGN) and multipath Rayleigh fading channels. Finally, plenty of simulation results show the excellent BER performance of the GCI-DM-DCSK-FM system.
引用
收藏
页码:11665 / 11677
页数:13
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