Smart antenna multiuser detector
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United States of America Patent
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-
Aug 24, 2004
Grant Date -
N/A
app pub date -
May 25, 2000
filing date -
May 26, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides a processing apparatus and methods for the extraction of user information streams from a composite CDMA waveform. The apparatus and methods increase CDMA system capacity by orthogonalizing an individual user's signal from thermal noise components, multi-access interference, and spatially diverse but non-orthogonal coded components. The present invention exploits both the temporal diversity and the spatial diversity present in the received composite CDMA waveform to increase performance. The smart antenna multiuser detector makes use of blind-block-adaptive nonlinear optimization strategies, which are used to separate user signal components from a composite CDMA waveform by jointly processing in both a chip (code) and spatial domain.
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