Design of a New Non-Coherent Cross-QAM-Based M-ary DCSK Communication System

被引:0
作者
Yang, Zhuwen [1 ]
Cai, Guofa [1 ]
机构
[1] Guangdong Univ Technol, Coll Informat Engn, Guangzhou 510000, Peoples R China
关键词
cross QAM-based M-ary differential chaos shift keying; bit error rate; multipath Rayleigh fading channel; MODULATION; ENERGY;
D O I
10.3390/electronics11193128
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
In this paper, a new non-coherent cross-quadrature amplitude modulation (XQAM)-based M-ary differential chaos shift keying (XQAM-MDCSK) system is proposed. In such a system, an autocorrelator is adopted at the receiver to obtain the channel compensation value. This framework can be extended to various amplitude phase shift keying-based MDCSK systems, such as star QAM-based MDCSK (star QAM-MDCSK) and square QAM-based MDCSK (SQAM-MDCSK) systems. Moreover, the bit error rate (BER) expression of the proposed XQAM-MDCSK system is derived over a multipath Rayleigh fading channel. Results show that the proposed XQAM-MDCSK system can achieve better BER performance and a lower peak-to-average power ratio (PAPR) compared to the star QAM-MDCSK system. Furthermore, we also show that the performance of the proposed system can be close to that of a system with perfect channel state information (CSI).
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页数:11
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