CDMA transmission apparatus
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United States of America Patent
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-
Dec 9, 2003
Grant Date -
N/A
app pub date -
Mar 9, 1999
filing date -
Mar 10, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
During asymmetric communications using only the uplink, frame configuration section 109 transmits a signal made up of only pilot signals and transmission power control bits assembled into frames. The transmission power control method is the same as that for normal communications. In this case, since signals transmitted on the downlink are only pilot signals and transmission power control bits, it is possible to reduce the transmission rate considerably and transmit signals with its transmission power reduced by transmission signal amplitude control section 111. In this case, a long hierarchic orthogonal type spreading code is set as the spreading code used by spreader 110.
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