Title :
Synchronous CDMA performance of bi-orthogonal systems with synchronizing PN sequence
Author :
Habuchi, Hiromasa ; Hasegawa, Takahiro
Author_Institution :
Dept. of Comput. & Inf. Sci., Ibaraki Univ., Hitachi, Japan
Abstract :
The aim of this paper is to evaluate the code division multiple access capability considering synchronization performance on bi-orthogonal modulation systems. In particular, the tracking performance, the bit error rate (BER) considering the tracking performance, and the effect of co-channel interference cancelling techniques are evaluated by theoretical analysis. Consequently, it is found that the optimum ratio of information signal energy to the synchronizing energy varies with Eb/N0. The co-channel interference canceller is better for small K than for large K (K=the number of users). Moreover, it is found that the BER performance considering synchronization performance improves as the equivalent noise bandwidth Bn decreases
Keywords :
cochannel interference; code division multiple access; error statistics; interference suppression; modulation; spread spectrum communication; synchronisation; tracking; BER; bi-orthogonal modulation systems; bi-orthogonal systems; bit error rate; co-channel interference cancelling techniques; code division multiple access; equivalent noise bandwidth; information signal energy; optimum ratio; synchronizing PN sequence; synchronizing energy; synchronous CDMA performance; tracking performance; Bit error rate; Code division multiplexing; Correlators; Interchannel interference; Interference cancellation; Modulation coding; Multiaccess communication; Noise cancellation; Performance analysis; Radiofrequency interference;
Conference_Titel :
Information, Communications and Signal Processing, 1997. ICICS., Proceedings of 1997 International Conference on
Print_ISBN :
0-7803-3676-3
DOI :
10.1109/ICICS.1997.647061
