Title :
Performance analysis of chip rate division multiple access (CRDMA) technique
Author :
Chen, X.H. ; Lang, T.
Author_Institution :
Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
In this paper, a novel multiple access scheme, chip rate division multiple access (CRDMA), based on CDMA is proposed. This helps to increase the capacity of a CDMA system by dividing users not only by different codes but also by different chip rates. Both synchronous and asynchronous CRDMA systems are considered in this paper. A method based on cross-correlation level statistics to analyze the BER of an asynchronous CDMA/CRDMA system is introduced and the performance for both CRDMA and normal CDMA systems using various orthogonal code families, such as M-sequences, Gold, Gold-like, Kasami and Walsh codes, is compared
Keywords :
code division multiple access; correlation methods; error statistics; pseudonoise codes; sequences; spread spectrum communication; synchronisation; BER; CDMA; Gold codes; Gold-like codes; Kasami codes; M-sequences; Walsh codes; asynchronous CRDMA systems; capacity; chip rate division multiple access; cross-correlation level statistics; orthogonal code families; performance analysis; synchronous CRDMA systems; Autocorrelation; Bit error rate; Bit rate; Correlators; Frequency; Gold; Information rates; Multiaccess communication; Performance analysis; Statistical analysis;
Conference_Titel :
Communication Technology Proceedings, 1996. ICCT'96., 1996 International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-2916-3
DOI :
10.1109/ICCT.1996.545040
