Paper Info
Title
Reliable and Efficient Sparse Code Spreading Aided MC-DCSK Transceiver Design for Multiuser Transmissions
Abstract
In this paper, we propose a Sparse Code Spreading-aided Multi-Carrier Differential Chaos Shift Keying (SCS-MC-DCSK) transceiver to improve the efficiency and reliability performances for multiuser transmissions. With the aim to improve the spectrum efficiency and enhance the reliability, we construct a multi-dimension codebook based on a factor graph matrix to spread information bits in a non orthogonal way, thus the signals could overlap and multiple users are allowed to share all sub-carrier resources via the non orthogonal spreading. The information bits using the same codebook are regarded as a layer, while each user could choose to use one or multiple layers. Then the resultant symbols are spread by the reference chaotic sequence and its quadrature version generated by Hilbert transform in the time domain. At the receiver, reverse operations are conducted, and we propose the Minimum Distance (MD) detection method to retrieve the estimates. Furthermore, theoretical performances, including the Symbol Error Rate (SER), capacity, energy efficiency, spectrum efficiency and computational complexity, are analyzed and compared among the proposed design and benchmarks. Simulation results are then provided to validate the theoretical analysis. Moreover, the Bit Error Rate (BER) performances under different channel conditions demonstrate the superior reliability and efficiency to benchmarks.
Year
DOI
Venue
2021
10.1109/TCOMM.2020.3040422
IEEE Transactions on Communications
Keywords
DocType
Volume
Minimum distance detection,multi carrier differential chaos shift keying,non orthogonal sparse code spreading,spectrum efficiency,symbol error rate (SER)
Journal
69
Issue
ISSN
Citations 
3
0090-6778
1
PageRank 
References 
Authors
0.34
0
5
Name
Order
Citations
PageRank
Zuwei Chen182.48
Lin Zhang23822.81
Zhiqiang Wu313417.56
Lin Wang415515.90
Weikai Xu516714.29