Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Reexamination Certificate
2002-08-12
2008-07-08
Sobutka, Philip J. (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
C455S561000, C455S067140, C455S277200
Reexamination Certificate
active
07398098
ABSTRACT:
In a mobile communication system having a plurality of terminals including a diversity terminal, an adaptive array base station controls a down-link transmitting power waveform for a terminal establishing access such that transmitting power is decreased at a timing when a reception level of a chip antenna is measured and that transmitting power is increased at a timing when a reception level of a whip antenna as a transmission antenna is measured. In the diversity terminal, therefore, the whip antenna is more likely to be selected as a receiving antenna, thereby improving down-link reception performance.
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Nobuyoshi Kikuma, “Adaptive Signal Processing by Array Antenna”,Kagaku Gijutsu Shuppan, pp. 35-49, Nov. 1998.
Sanyo Electric Co,. Ltd.
Sobutka Philip J.
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