Transmission diversity apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 1, 2001
Grant Date -
N/A
app pub date -
Jun 25, 1998
filing date -
Jul 4, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Outputs of A/D converters 110, 111, and 112 are input to correlation devices 117, 118, and 119. The correlation devices 117, 118, and 119 output ratios of these signals to an output signal of a modulator 116 for modulating an output of a switching device 115. Each of standardizing devices 120, 121, and 122 cancels a gain component from an input signal, and selects a signal having a maximum signal-to-interference power ratio. A switching device 124 switches a transmitting antenna in accordance with the selection result so as tc send a transmitting message. A switching device 125 switches a unique word in a synchronous burst, and a unique word in a communication channel signal, or a receiving message to be sent to the correlation devices as a reference signal.
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