Title :
Initial phase selection of chaos-based spreading sequences in asynchronous DS-CDMA systems
Author :
Yoshioka, Daisaburo ; Tsuneda, Akio ; Inoue, Takahiro
Author_Institution :
Kumamoto Univ., Japan
fDate :
30 Aug.-2 Sept. 2004
Abstract :
We present a new criterion for selecting initial phases of maximal-period sequences which are kinds of chaos-based spreading sequences. The sequences with the phase obtained by such a criterion have advantages in asynchronous DS-CDMA with respect to deviations of cochannel interference parameters from their average value. We can select a large class of sequences with "good" properties by using the proposed criterion as a sieve.
Keywords :
chaos; cochannel interference; code division multiple access; sequences; spread spectrum communication; asynchronous DS-CDMA systems; chaos-based spreading sequences; cochannel interference parameters; initial phase selection; maximal-period sequences; AWGN; Autocorrelation; Binary sequences; Chaos; Chaotic communication; Gold; Interchannel interference; Multiaccess communication; Multiple access interference; Shift registers;
Conference_Titel :
Spread Spectrum Techniques and Applications, 2004 IEEE Eighth International Symposium on
Print_ISBN :
0-7803-8408-3
DOI :
10.1109/ISSSTA.2004.1371793
