Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2008-07-08
2008-07-08
Odom, Curtis B. (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S130000, C375S134000, C375S136000, C375S137000, C375S142000, C375S143000, C375S144000, C375S147000, C375S150000, C375S152000, C375S346000
Reexamination Certificate
active
10672127
ABSTRACT:
A RAKE receiver circuit generates combining weights based on channel estimates and combining statistics that comprise channel coefficient statistics, noise statistics, and channel estimation error statistics. Together, these statistics incorporate the relationships in noise and channel estimation across two or more RAKE fingers, and thus improve combining weight generation. Exemplary determination of statistics comprises channel coefficient cross-correlations, noise cross-correlations, and channel estimation error cross-correlations. Determination of the statistics can be varied based on, for example, the assumption of default or nominal signal models. Further, statistics determination can be configured for different receive and transmit diversity scenarios, wherein combining statistics can be determined on a per diversity signal basis, or jointly for two or more diversity signals, or in a mixed separate/joint method wherein one or more statistics are determined on a per signal basis and one or more statistics are determined across the signals.
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Bottomley Gregory E.
Cozzo Carmela
Khayrallah Ali S.
Moelker Dignus-Jan
Coats & Bennett P.L.L.C.
Odom Curtis B.
Telefonaktiebolaget LM Ericsson (publ)
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