NDLI: Design and analysis of a spread-spectrum communication system with chaos-based variation of both phase-coded carrier and spreading factor

Content Provider	IET Digital Library
Author	Quyen, Nguyen Xuan Yem, Vu Van Duong, Trung Q.
Abstract	This study designs and analyses a new phase-coded spread-spectrum communication system where both phase-coded carrier and spreading factor are varied based on a chaotic behaviour in the communication process. This design aims to reduce the probability of interception of the considered system. Discrete values generated by a chaotic map are exploited to create a non-return-to-zero (NRZ)-chaos sequence and simultaneously make bit duration variable. The NRZ-chaos sequence is then modulated by binary phase-shift keying technique to produce the phased-coded carrier. Owing to chip duration being constant, the variation of bit duration also leads to the variation of spreading factor. Spectrum spreading in the transmitter is performed by multiplying directly the variable-duration bits with the phase-coded carrier. A coherent receiver relying on a direct correlator is used for recovering the data. Design of the transmitter and receiver as well as analysis of bit error probability for the proposed system in cases of single-user and multi-user under additive white Gaussian noise channel is presented. Simulation results are shown to confirm the operation of the designed structures and the obtained analytical performance.
Starting Page	1466
Ending Page	1473
Page Count	8
ISSN	17518628
Volume Number	9
e-ISSN	17518636
Issue Number	Issue 12, Aug (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/9/12
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2014.0907
Journal	IET Communications
Publisher Date	2015-06-09
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Binary Phase Shift Keying Technique Bit Duration Variation Bit Error Probability Chaos Based Variation Chaotic Behaviour Chaotic Map Chip Duration Code Communication Process Direct Correlator Discrete Values Error Statistics Gaussian Channel Gaussian Noise Channel Non-return-to-zero NRZ Chaos Sequence Phase Coded Carrier Phase Coded Spread Spectrum Communication System Phase Coding Phased Coded Carrier Radio Link And Equipment Spectrum Spreading Spread Spectrum Communication Spread Spectrum Communication System Spreading Factor Statistics
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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