Title :
Code performance in multi-rate CDMA for an optical fiber network
Author :
Hamelin, é ; Fortier, P. ; Rusch, L.A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Laval Univ., Que., Canada
Abstract :
We have developed analytical expressions for the cross-correlation between users at unequal bit rates (chip rates are equal), i.e. for multi-rate (multi-processing gain) CDMA high bandwidth LAN. These expressions for the cross-correlations were used to generate data for Gold and Kasami sequences. The results of our calculations show that Gold and Kasami sequences´ cross-correlation performance in a multi-rate scheme is very close to the performance calculated when assuming random sequences
Keywords :
Gaussian noise; code division multiple access; correlation methods; optical fibre LAN; performance evaluation; phase shift keying; pseudonoise codes; spread spectrum communication; white noise; DS-CDMA; Gold sequences; Kasami sequences; code performance; cross-correlation performance; deterministic pseudorandom code sequences; high bandwidth LAN; homodyne coherent detection; multi-rate scheme; optical fiber network; random sequences; unequal bit rates; Bandwidth; Bit rate; Costs; Gold; Intelligent networks; Local area networks; Multiaccess communication; Optical fiber networks; Pulse shaping methods; Signal to noise ratio;
Conference_Titel :
Electrical and Computer Engineering, 1997. Engineering Innovation: Voyage of Discovery. IEEE 1997 Canadian Conference on
Conference_Location :
St. Johns, Nfld.
Print_ISBN :
0-7803-3716-6
DOI :
10.1109/CCECE.1997.614797
