Electrical & Computer Engineering, Department of


Date of this Version



Published in Wireless Communications and Networking Conference, 1999. WCNC. 1999 IEEE 21-24 Sept. 1999 Page(s):1377 - 1381 vol.3 Digital Object Identifier 10.1109/WCNC.1999.796963 Copyright 1999 IEEE. Used by permission.


In the paper, we present simulation results for the 13 channel DS CDMA WATM LAN utilising optimized complex spreading signatures based on Walsh functions. The method to obtain those optimized spreading signatures, as well as the full set of the coefficients giving the minimum level of cross-correlation between any pair of the channels is shown. The resultant system BER as well as the distribution of errors within WATM cells is given. The obtained results indicate that with the application of a hybrid ARQ scheme with errors and erasures decoding, the number of WATM cells which would require retransmission is in the order of 0.46%.