Adaptive antenna for use in same frequency networks
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United States of America Patent
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-
Aug 8, 2000
Issued Date -
N/A
app pub date -
Dec 11, 1998
filing date -
Sep 21, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An antenna apparatus which can increase capacity in a cellular communication system. The antenna operates in conjunction with a mobile subscriber unit and provides a plurality of antenna elements, each coupled to a respective programmable phase shifter. The phase of each antenna element is programmed for optimum reception during, for example, an idle mode which receives a pilot signal. The antenna array creates a beamformer for signals to be transmitted from the mobile subscriber unit, and a directional receiving array to more optimally detect and receive signals transmitted from the base station. By directionally receiving and transmitting signals, multipath fading is greatly reduced as well as intercell interference. Various techniques for determining the proper phase of each antenna element are accommodated.
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