Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2007-09-04
2007-09-04
Lugo, David B. (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C375S146000, C375S299000
Reexamination Certificate
active
10132992
ABSTRACT:
An apparatus and method provide for producing a multi-carrier signal at a reduced peak to average power ratio. A control system (401) determines a number of carriers in multi-carrier signal, determines chip time of a spreading sequence used for spreading the number of carriers and determines delay time for each of the number of carriers based on the determined number of carriers and the determined chip time. Delay blocks (512B,512C) delay the number of carriers by the determined delay time. A combiner (502) combines the delayed carriers to produce a reduced peak to average power ratio multi-carrier signal (504). A transmitter (500) transmits the reduced peak to average power ratio multi-carrier signal (504). The transmitter (500) may include an amplifier (520) for amplifying the reduced peak to average power ratio multi-carrier signal (504) before transmitting.
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Black Peter J.
Montojo Juan
Beladi S. Hossain
Lugo David B.
QUALCOMM Incorporated
Rouse Thomas R.
Velasco Jonathan T.
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