Method and rake receiver for phasor estimation in communication systems
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United States of America Patent
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Jan 23, 2007
Grant Date -
Nov 8, 2001
app pub date -
Mar 2, 2001
filing date -
Mar 3, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
The invention relates to a channel estimation algorithm is proposed for a RAKE receiver for CDMA communication systems operating in the downlink of a mobile communication scenario yielding an improved phasor estimation. Received signals are distributed to a plurality of receiver fingers of a RAKE receiver. Each receiver finger i is assigned to a signal path of the transmitted signal which is subject to phase shift and power dissipation due to reflection, diffraction and scattering. According to the invention the approach partly cancels multipath/multiuser interference and offers the advantage of being able to cope with physically closely spaced multipaths.
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