الفهرس 
WCDMA PHYSICAL LAyEROnly 14 pages are availabe for public view
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Abstract
Third generation systems are based on COMA technology, and have
proven to provide superior performance and capacity enhancements to
existing second generation systems. Third generation CDMA mobile
systems will provide the market with the high bandwidth multimedia
services needed.
Research efforts have shown that capacity in a OS-COMA cellular
system can be increased through the use of digital signal processing
techniques that exploit the nature of the multiple access interference (MAL).
By jointly decorrelating the users in the system, this interference can be
characterized and reduced thus decreasing the overall probability of error in
the system. Numerous multi-user structures exist, each with varying
degrees of complexity and performance. However, the size and complexity
of these structures is large relative to a conventional receiver.
The focus of this thesis is the study of advanced processing
techniques for multi-user interference cancellation in direct sequence code
division multiple access communications and under a variety of conditions.
Emphasis is placed on the development of efficient techniques that are
practical to implement. Multistage parallel interfemce cancellation is
identified as a practical approach for mitigating multiple access
interference.