Title :
Performance evaluation of spreading sequences with negative auto-correlation based on chaos theory and Gold sequences
Author :
Tsuneda, Akio ; Miyazaki, Yasunori
Author_Institution :
Dept. of Comput. Sci. & Electr. Eng., Kumamoto Univ., Kumamoto, Japan
Abstract :
Spreading sequences with appropriate negative auto-correlation can reduce average multiple access interference (MAI) in asynchronous DS/CDMA systems compared with the conventional Gold sequences generated by linear feedback shift registers (LFSRs). We design spreading sequences with negative auto-correlation based on Gold sequences and the chaos theory for the Bernoulli map. By computer simulations, we evaluate BER performances of asynchronous DS/CDMA systems using the proposed sequences.
Keywords :
binary codes; binary sequences; chaotic communication; code division multiple access; correlation methods; error statistics; interference suppression; spread spectrum communication; BER performance evaluation; Bernoulli map; Gold code sequence; LFSR; asynchronous DS/CDMA system; average MAI reduction; chaos theory; computer simulation; direct-sequence code division multiple access system; linear feedback shift register; multiple access interference reduction; negative autocorrelation; spreading sequence design; Autocorrelation; Binary sequences; Bit error rate; Chaos; Chaotic communication; Computer simulation; Gold; Linear feedback shift registers; Multiaccess communication; Multiple access interference; Asynchronous DS/CDMA; Gold sequence; chaos theory; negative autocorrelation;
Conference_Titel :
Signal Design and its Applications in Communications, 2009. IWSDA '09. Fourth International Workshop on
Conference_Location :
Fukuoka
Print_ISBN :
978-1-4244-4379-6
Electronic_ISBN :
978-1-4244-4380-2
DOI :
10.1109/IWSDA.2009.5346422
