Performance Analysis of Short Reference Orthogonal Multiuser Differential Chaotic Shift Keying Scheme

Gang ZHANG; Changchang ZHAO; Tianqi ZHANG

doi:10.11999/JEIT181038

Volume 41 Issue 9

Sep. 2019

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Gang ZHANG, Changchang ZHAO, Tianqi ZHANG. Performance Analysis of Short Reference Orthogonal Multiuser Differential Chaotic Shift Keying Scheme[J]. Journal of Electronics & Information Technology, 2019, 41(9): 2055-2062. doi: 10.11999/JEIT181038

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Gang ZHANG, Changchang ZHAO, Tianqi ZHANG. Performance Analysis of Short Reference Orthogonal Multiuser Differential Chaotic Shift Keying Scheme[J]. Journal of Electronics & Information Technology, 2019, 41(9): 2055-2062. doi: 10.11999/JEIT181038

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Performance Analysis of Short Reference Orthogonal Multiuser Differential Chaotic Shift Keying Scheme

doi: 10.11999/JEIT181038

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

Funds: The National Natural Science Foundation of China (61771085, 61371164), The Project of Key Laboratory of Signal and Information Processing of Chongqing (CSTC2009CA2003), The Research Project of Chongqing Educational Commission (KJ1600427)

Received Date: 2018-11-13
Rev Recd Date: 2019-05-13

Available Online: 2019-05-24

Publish Date: 2019-09-10

Abstract

Abstract

Considering the shortcomings of Differential Chaos Shift Keying (DCSK) transmission rate and to further improve the system error performance, a Short reference Orthogonal Multiuser DCSK(SOM-DCSK) communication system is proposed. The system shortens the reference signal to 1/P of each information bearing signal, and transmits multiple users by different delay times. Then the orthogonality of Hilbert transform is used in each information slot to achieve the purpose of transmitting a two-bit information signal. The Bite Error Rate (BER) formula of SOM-DCSK system in Additive White Gaussian Noise (AWGN) and Rayleigh fading channel is derived and experimentally simulated. The simulation results show that BER of the scheme has obvious improvement compared with the traditional multi-user system under the same conditions, and it has good practical value.
- Differential Chaos Shift Keying (DCSK),
- Hilbert transform,
- Bit Error Rate (BER),
- Multiuser

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References(17)

References

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