Title :
Frequency-Hopping Codes Based on Four-Dimensional Chaotic System
Author :
Tang Liangrui ; Yang Ankun ; Zhang Qin ; Sun Yi
Author_Institution :
Sch. of Electr. & Electron. Eng., North China Electr. Power Univ., Beijing, China
Abstract :
A kind of frequency-hopping (FH) codes based on a four-dimensional chaotic system is proposed in this paper and then used in FH communication system. This chaotic system has a special chaotic attractor and high Lyapunov indexes. Chaotic sequence produced by this system has good balance, excellent correlation capability and high non-linear complexity. When the chaotic sequence is used in FH communication system, the simulation results show that the sequence has superior performance in anti-multipath interference and multiple access interference. Besides, it enhances the confidentiality of the system, so it is very applicable to FH communication system.
Keywords :
chaotic communication; codes; correlation methods; frequency hop communication; radiofrequency interference; Lyapunov index; antimultipath interference; chaotic sequence; correlation capability; four-dimensional chaotic system; frequency-hopping code; frequency-hopping communication system; Bandwidth; Chaos; Chaotic communication; Communication system control; Communication systems; Frequency shift keying; Frequency synthesizers; Performance analysis; Signal restoration; Spread spectrum communication;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3692-7
Electronic_ISBN :
978-1-4244-3693-4
DOI :
10.1109/WICOM.2009.5303410
