Performances of Selection Hyperchaotic Spreading Sequences in a Downlink DS-CDMA Systems

被引：0
|
作者：
Fennouh, I. [1 ]
Sadoudi, S. [1 ]
Tanougast, C. [2 ]
机构：
[1] Ecole Mil Polytech, Telecommun Lab, Algiers, Algeria
[2] Lorraine Univ, LCOMS Lab, Metz, France
来源：
2018 INTERNATIONAL CONFERENCE ON SIGNAL, IMAGE, VISION AND THEIR APPLICATIONS (SIVA) | 2018年
关键词：
Downlink DS-CDMA; Hyperchaotic Lorenz system; spreading sequences; FPGA;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, a selection algorithm performances of hyperchaotic spreading sequences applied in downlink Direct Sequence Code Division Multiple Access (DS-CDMA) systems is analyzed. Firstly, the principle scheme and the hardware architecture description of a hyperchotic spreading code generator are presented. The generator permits to generate simultaneously an infinite number of multi-length spreading codes with good statistical properties, no repetition and high degree of security. Secondly, an algorithm for selecting the high efficient hyperchaotic spreading sequences for DS-CDMA based on the balance and correlation properties is proposed. Finally, performances of DS-CDMA system based on the selected hyperchaotic spreading sequences are compared to that of classical codes under AWGN and time-invariant multipath channels. The obtained simulation results prove the effectiveness of the proposed spreading sequences generator.
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页数：6
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