Title :
An Improved Scheme for Multiple Access Differential Chaos-Shift Keying System
Author :
Shi, Ying ; Chen, Yiping ; Zhou, Yigang ; Liu, Youyong
Author_Institution :
Sch. of Electron. & Commun. Eng., Harbin Inst. of Technol., Harbin
Abstract :
In this paper, a modified multiple-access scheme is proposed and analyzed on the base of the time-delay-based multiple-access technique using differential chaos shift keying (DCSK). Zero-mean Logistic chaos map with different initial values is used to generate the chaotic signals for all users and the average data rates for the users are identical. Bit error rates are derived numerically for different number of users, spreading factor, and the bit-energy-to -noise-power-spectral-density ratio under AGWN channel model or multipath Rayleigh fading channel model. Finally, computer simulations are performed to verify the results.
Keywords :
AWGN channels; Rayleigh channels; chaotic communication; error statistics; modulation; multi-access systems; multipath channels; AGWN channel; bit error rate; differential chaos shift keying; multipath Rayleigh fading channel; spreading factor; time delay-based multiple access technique; zero-mean logistic chaos map; Acoustical engineering; Additive white noise; Chaos; Chaotic communication; Fading; Gaussian noise; Logistics; Signal generators; Switching circuits; Transmitters;
Conference_Titel :
Circuits and Systems for Communications, 2008. ICCSC 2008. 4th IEEE International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1707-0
Electronic_ISBN :
978-1-4244-1708-7
DOI :
10.1109/ICCSC.2008.83
