Electrical & Computer Engineering, Department of


Date of this Version



Published in Universal Personal Communications, 1998. ICUPC '98. IEEE 1998 International Conference on Volume 2, 5-9 Oct. 1998 Page(s):1295 - 1298 vol.2 Digital Object Identifier 10.1109/ICUPC.1998.733703 Copyright 1998 IEEE.


In the paper, we present simulation results for the 13 channel DS CDMA WATM LAN utilising optimized complex spreading signatures based on Walsh-Rademacher 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 and the distribution of errors within encapsulated WATM cells is given. The obtained results indicate that with the application of a hybrid ARQ scheme, capable of correcting 10 errors, the number of WATM cells which would require retransmission is in the order of I-2%.