Smart Antenna Strategies for the UMTS FDD Downlink

[hendral]

Pls find material about Smart Antenna Strategies for the UMTS FDD
Downlink . This is a disertation


This thesis present methods for improving the downlink capacity (number of served users) of the Frequency Division Duplex (FDD) mode of the Universal Mobile Telecommunication System (UMTS) with the help of an antenna array at the base station. In a Code Division Multiple
Access (CDMA) system like UMTS, the performance gain of methods relying on capabilities in the mobiles that are not available in all mobiles, degrades with the number of mobiles that cannot support these methods.

This thesis introduces potential smart antenna strategies. Two of the presented strategies, the logic cell method and the switched beam method are fixed beam methods that place a fixed grid of beams over the coverage area. In contrast to the fixed beam methods, user specific beamforming methods, form an individual beam for each user.


Smart Antenna Strategies for the UMTS FDD.pdf



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