Journal
ELECTRONICS
Volume 11, Issue 19, Pages -Publisher
MDPI
DOI: 10.3390/electronics11193128
Keywords
cross QAM-based M-ary differential chaos shift keying; bit error rate; multipath Rayleigh fading channel
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Funding
- NSF of China [62071129]
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This paper proposes a new non-coherent cross-quadrature amplitude modulation (XQAM)-based M-ary differential chaos shift keying (XQAM-MDCSK) system, where an autocorrelator is used at the receiver to obtain the channel compensation value. Results show that the proposed system achieves better bit error rate (BER) performance and a lower peak-to-average power ratio (PAPR) compared to the star QAM-MDCSK system.
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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