Title :
Spreading sequence sets with zero and low correlation zone for quasi-synchronous CDMA communication systems
Author :
Deng, Xinmin ; Fan, Pingzhi
Author_Institution :
Sch. of Comput. & Commun. Eng., Southwest Jiaotong Univ., Chengdu, China
Abstract :
This paper considers the application of sequences with low correlation zone (LCZ) and zero correlation zone (ZCZ) to quasi-synchronous DS/CDMA communication systems. Several classes of sequences with LCZ and ZCZ are described. Numerical results show that the BER performances of systems using ZCZ sequences and LCZ sequences are comparable with the same number of users and almost the same processing gain. In addition, when the timing error is large, the ZCZ sequences perform better than the LCZ sequences. Analytic results are verified with simulations
Keywords :
code division multiple access; correlation theory; error statistics; land mobile radio; sequences; spread spectrum communication; synchronisation; BER performances; DS-CDMA; LCZ sequences; ZCZ sequences; low correlation zone sequences; mobile radio; quasi-synchronous CDMA communication systems; spreading sequence sets; timing error; zero correlation zone sequences; Application software; Autocorrelation; Bit error rate; Code division multiplexing; Communication systems; Multiaccess communication; Multiple access interference; Performance gain; System performance; Timing;
Conference_Titel :
Vehicular Technology Conference, 2000. IEEE-VTS Fall VTC 2000. 52nd
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-6507-0
DOI :
10.1109/VETECF.2000.886114
