Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2005-04-26
2005-04-26
Ha, Dac V. (Department: 2634)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S148000, C375S346000, C370S252000, C455S059000, C455S067700, C455S226300, C455S296000
Reexamination Certificate
active
06885694
ABSTRACT:
An apparatus and method are described in which a corrected signal-to-interference ratio (SIR) is determined in a cellular telephone receiver. First the estimated signal strength at the receiver is measured, then the estimated interference level is measured. The signal strength and the interference values are separately corrected in accordance with an algorithm. Thereafter, a corrected SIR value is obtained by dividing the corrected signal strength and the corrected interference values.
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U.S. Appl. No. 09/038,067, filed Mar. 1998, Popovic.
He Ning
Östman Thomas
Ha Dac V.
Nixon & Vanderhye P.C.
Telefonaktiebolaget LM Ericsson (publ)
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