Pulse or digital communications – Transmitters – Antinoise or distortion
Reexamination Certificate
2007-04-10
2007-04-10
Tran, Khanh (Department: 2611)
Pulse or digital communications
Transmitters
Antinoise or distortion
C375S297000, C455S114300
Reexamination Certificate
active
09911139
ABSTRACT:
A Wideband Code-Division Multiple Access (WCDMA) transceiver and a method of operating the same. In one embodiment, the transceiver includes: (1) a transmit chain having a lookup table that provides coefficients to a digital predistorter based on power indicators and (2) a predistorter training circuit, coupled to the transmit chain, that employs a receive chain of the WCDMA transceiver to provide a digital compensation signal that is a function of an output of the transmit chain and employs both the power indicators and the digital compensation signal to cause the lookup table to provide alternative coefficients to the digital predistorter thereby to reduce distortion in the output.
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Bauder Ruediger
Yan Qing
Yiin Jeffrey Lihbor
Agere Systems Inc.
Tran Khanh
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