期刊名称：International Journal of Wireless & Mobile Networks
印刷版ISSN：0975-4679
电子版ISSN：0975-3834
出版年度：2012
卷号：4
期号：1
出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：A Dynamic MAC protocol is developed for WCDMA wireless multimedia networks. It uses multiple slots per frame allowing multiple users to transmit simultaneously using their own CDMA codes. The proposed MAC protocol is based on contention .If there is low contention users can access any slots and if there is high level contention the owners of the slots have priority to access slots .If the owners are not having any data the non owners can access slots. An adaptive power control algorithm is applied to reduce transmission power, interference level, and to maximize system capacity. If the observed traffic is high, power will be increased; if traffic is low power will be decreased. By simulation results, we show that our proposed MAC protocol achieves 100% throughput under low contention and 90% throughput under high contention and also reduces power consumption.
关键词：Wideband Code Division Multiple Access (W-CDMA); MAC protocol; Direct Sequence Spread Spectrum;(DSSS); Medium Access control; Multimedia networks.
