Title :
DS CDMA scheme for WATM with errors and erasures decoding
Author :
Wysocki, Beata J. ; Zepernick, Hans-Jurgen ; Wysocki, Tadeusz A.
Author_Institution :
Australian Telecommun. Res. Inst., Curtin Univ. of Technol., Perth, WA, Australia
Abstract :
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%
Keywords :
Walsh functions; asynchronous transfer mode; automatic repeat request; code division multiple access; correlation methods; decoding; error statistics; land mobile radio; packet radio networks; spread spectrum communication; wireless LAN; DS CDMA WATM LAN; WATM cells; Walsh functions; coefficients; cross-correlation; erasures decoding; error distribution; errors decoding; hybrid ARQ; mobile communications; optimized complex spreading signatures; retransmission; simulation results; system BER; Asynchronous transfer mode; Australia; Decoding; Frequency; Interference; Local area networks; Multiaccess communication; Optimization methods; Telephony; Wireless LAN;
Conference_Titel :
Wireless Communications and Networking Conference, 1999. WCNC. 1999 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-5668-3
DOI :
10.1109/WCNC.1999.796963
