Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2006-06-13
2006-06-13
Deppe, Betsy L. (Department: 2637)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S144000, C455S422100
Reexamination Certificate
active
07061971
ABSTRACT:
A method and apparatus for diversity searching and demodulator finger assignment in receivers with multiple receive chains enhances reception using optimal search and demodulator finger assignment operations. Optimal search and demodulator finger assignment for diversity environments provides improved interference cancellation and exploitation of independent fading by ensuring cell and receive chain diversity. After performing standard single antenna searching operations for each diversity receive chain, demodulator finger assignments are made according to signal strength and cell diversity. Signal paths are then re-assigned to achieve receive chain diversity if necessary. The availability of power control combiners may be considered when making demodulator finger assignments depending on the architecture of diversity receiver.
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Sundaram Senthilkumar K.
Ulupinar Fatih
DeAngelo Maryanne E.
Deppe Betsy L.
Godsey Sandra L.
Qualcomm Incorporated
Wadsworth Philip
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