Orthogonal Multiuser Short Reference High Rate Differential Chaos Shift Keying Communication System

Gang ZHANG; Kerong XU; Lifang He

doi:10.11999/JEIT200739

Volume 43 Issue 11

Nov. 2021

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Gang ZHANG, Kerong XU, Lifang He. Orthogonal Multiuser Short Reference High Rate Differential Chaos Shift Keying Communication System[J]. Journal of Electronics & Information Technology, 2021, 43(11): 3131-3140. doi: 10.11999/JEIT200739

Citation:

Gang ZHANG, Kerong XU, Lifang He. Orthogonal Multiuser Short Reference High Rate Differential Chaos Shift Keying Communication System[J]. Journal of Electronics & Information Technology, 2021, 43(11): 3131-3140. doi: 10.11999/JEIT200739

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Orthogonal Multiuser Short Reference High Rate Differential Chaos Shift Keying Communication System

doi: 10.11999/JEIT200739

Communication and Information Engineering College, Chongqing University of Posts and Telecommunications, Chongqing 400065, China

Funds: The National Natural Science Foundation of China (61771085), The Research Project of Chongqing Educational Commission (KJ1600407, KJQN201900601)

Received Date: 2020-08-20
Rev Recd Date: 2021-07-15

Available Online: 2021-09-19

Publish Date: 2021-11-23

Abstract

Abstract

An Orthogonal MultiUser Short Reference High Rate DCSK (OMU-SRHR-DCSK) communication system is proposed to solve the problem of low transmission rate and low energy efficiency of traditional MultiUser Short Reference Differential Chaos Shift Keying communication system. The system shortens reference signal length to 1/P of data signal, transmits multiple users’ information bits by adding two continuous information time slots, and transmits additionally N user’ information bit in each information time slot through Hilbert transform, which greatly improves the data transmission rate of the system. The interference between users is completely eliminated mainly by combining Hilbert transform with Walsh code, thus improving the Bit Error Rate (BER) performance. The theoretical BER formula of OMU-SRHR-DCSK system over Additive White Gaussian Noise (AWGN) and L-path Rayleigh Fading Channel (RFC) are derived and verified by experiments. The experimental simulation and theoretical derivation are consistent in the two channels, which proves the correctness of theoretical derivation. Compared with the traditional multiuser short reference system, the transmission rate of the system is greatly improved, and the BER performance of the system is obviously superior over that of the traditional multiuser short reference system under the condition of the same number of transmission bit. It is proved that the system has excellent practical value and provides a good theoretical support for its application in practice.
- Chaos communication,
- Multiuser,
- Hilbert transform,
- Walsh code,
- Transmission rate

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References(18)

References

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