Title :
DS CDMA scheme for WATM LAN with error control
Author :
Wysocki, Beata J. ; Wysocki, Tadeusz A. ; Zepernick, Hans J.
Author_Institution :
Cooperative Res. Centre for Broadband Telecommun. & Networking, Perth, WA, Australia
Abstract :
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 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, capable of correcting 10 errors, the number of WATM cells which would require retransmission is in the order of 0.6%
Keywords :
asynchronous transfer mode; automatic repeat request; code division multiple access; error correction; error statistics; spread spectrum communication; wireless LAN; BER; DS CDMA; WATM LAN; WATM cell; Walsh-Rademacher functions; cross-correlation; error control; hybrid ARQ scheme; optimized complex spreading signatures; optimized spreading signatures; retransmission; Asynchronous transfer mode; Error correction; Frequency; Local area networks; Multiaccess communication; Multiple access interference; Narrowband; Optimization methods; Telephony; Wireless LAN;
Conference_Titel :
Global Telecommunications Conference, 1998. GLOBECOM 1998. The Bridge to Global Integration. IEEE
Conference_Location :
Sydney,NSW
Print_ISBN :
0-7803-4984-9
DOI :
10.1109/GLOCOM.1998.775877
