Technique for time alignment of uplink CDMA signals
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United States of America Patent
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Jul 16, 2002
Grant Date -
N/A
app pub date -
May 13, 1998
filing date -
May 13, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to communication systems and in particular relates to the time alignment of uplink CDMA signals. A simple approach for improving the performance of received CDMA signals is discussed. This consists of aligning the timings of users' signals such that the maximum output power from a single rake finger for each user occurs simultaneously. This allows the timing to be adjusted for each user's signal independently of the others and has the effect of minimizing any interference between users. The invention provides a time alignment mechanism which employs a minimum of signalling.
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