Title :
A new approach in chaos shift keying for secure communication
Author :
Lau, Yuu-Seng ; Hussain, Zahir M.
Author_Institution :
Sch. of Electr. & Comput. Eng., R. Melbourne Inst. of Technol., Vic., Australia
Abstract :
A chaotic sequence for chaos shift keying (CSK) that provides auto- and cross-correlation properties (that are similar to those of random white noise) is used for spread spectrum systems. Due to its bifurcation behavior (depending on the initial condition), the number of chaotic sequences that can be generated by a single formula is not restricted and will not repeat itself. These characteristics provide an increase in system capacity and security performance. The paper presents a study of two different commonly used chaotic logistic maps and a modified chaotic logistic map for CSK spread spectrum system. The newly modified logistic map provides similar bits error rate (BER) performance to the best logistic map. Yet, it also provides an additional chaotic parameter for the control of its dynamic property, hence increasing the system security and capacity.
Keywords :
chaotic communication; correlation methods; modulation; sequences; spread spectrum communication; telecommunication security; bifurcation behavior; bits error rate performance; chaos shift keying; chaotic logistic map; chaotic sequence; cross-correlation property; secure communication; security performance; spread spectrum system; system security; Bifurcation; Bit error rate; Chaotic communication; Communication system security; Frequency synchronization; Logistics; Random sequences; Spread spectrum communication; Transmitters; White noise;
Conference_Titel :
Information Technology and Applications, 2005. ICITA 2005. Third International Conference on
Print_ISBN :
0-7695-2316-1
DOI :
10.1109/ICITA.2005.30
