Title :
A novel CDP DS/SS system with 2-dimensional Ikeda map chaotic sequence
Author :
Htut, Su Myat ; Puthusserypady, Sadasivan
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
In this paper, a novel quadrature modulation based complex digital processing (CDP) DS/SS system is proposed which exploits the 2-D complex chaotic Ikeda map (IM) as the spreading sequence. With the proposed system, we can mitigate multiple access interference (MAI) by using complex-valued processing method for the spreading and despreading operations. The performance of the proposed CDP system is evaluated in multiuser environment numerically and analytically under additive white Gaussian noise (AWGN) and Rayleigh flat fading channel conditions. Simulation results reveal that the proposed CDP DS/SS system with the IM spreading sequence significantly outperforms the conventional Gold code based inphase-quadrature (I-Q) DS/SS system.
Keywords :
AWGN; Rayleigh channels; chaotic communication; interference suppression; quadrature amplitude modulation; radiofrequency interference; signal processing; spread spectrum communication; 2D complex chaotic Ikeda map sequence; AWGN; DS/SS communication system; MAI; Rayleigh flat fading channel; additive white Gaussian noise; complex digital processing; multiple access interference; quadrature modulation; AWGN; Binary phase shift keying; Bit error rate; Chaos; Chaotic communication; Erbium; Gold; Multiple access interference; Numerical simulation; Performance analysis;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2003. PIMRC 2003. 14th IEEE Proceedings on
Print_ISBN :
0-7803-7822-9
DOI :
10.1109/PIMRC.2003.1259238
