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to the list of graduate studentsTraffic Handling Capability Study of the Broadband Indoor Wireless System Using CDMA Multiple Access
by
Chang Gang Zhang
Ph. D., 1994
Abstract
The millimeter (MM) wave band (above 20 GHz) appears to be suitable for wireless access to broadband services, e.g. up to 20 Mb/s data rate, in an indoor environment due to the advantages of sufficient bandwidth, sparse usage, small RF device dimensions and favorable regulatory environment. CDMA (Code Division Multiple Access) ma be an attractive technique because of its multiple access simplicity and other appealing features. In order to investigate the trafic handling capabilities of the future network providing desired quality of integrated services, this work presents a study of an indoor wireless network supporting high speed traffic using CDMA multiple access.
The results are obtained through the simulation of an indoor environment and the traffic capabilities of the wireless access to the broadband 155.5 MHz ATM-SONET networks using the mm-wave band. A distributed system architecture is employed, and the system performance is measured in terms of call blocking probability and dropping probability. The impacts of the base-station density, traffic load, average holding time, and variable traffic sources on the system performance are examined. The improvements of the system performance by implementing various techniques such as handoff, admission control, power control and base antenna sectorization is also investigated.