Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2005-02-23
2010-02-23
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S320000, C375S150000, C375S136000, C375S147000
Reexamination Certificate
active
07668226
ABSTRACT:
A method of processing an amplitude-modulated traffic signal involves the determination of a gain offset between the traffic signal and a reference signal, e.g., a pilot signal, received in association with the traffic signal, based on relating values known or determined from the reference signal to that gain offset. For example, in at least one embodiment of a wireless communication receiver, one or more processing circuits are configured to compute the gain offset based on the average magnitude of estimated traffic symbols and a signal-to-noise ratio. The received traffic symbols can be estimated using soft combining weights calculated from the reference signal, as can the signal-to-noise ratio. With the gain offset thus determined, the estimated traffic symbols can be scaled properly for subsequent processing, such as in log-likelihood ratio processing to recover the traffic signal data.
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Coats & Bennett P.L.L.C.
Lam Kenneth
Liu Shuwang
Telefonaktiebolaget LM Ericsson (publ)
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