Transmission device and transmission method

Details Transmission device and transmission method Transmission device and transmission method

2005-12-27

2005-12-27

Fan, Chieh M. (Department: 2638)

Pulse or digital communications

Transmitters

Antinoise or distortion

C375S297000, C455S063100, C455S114300

Reexamination Certificate

active

06980604

ABSTRACT:
The present invention provides a transmission device for predistorting a digital signal in order to compensate distortion, then amplifying and transmitting it. A digital input signal is converted to a first analog signal by a first D/A converter. Separately, the digital input signal is also subjected to predistortion. A compensating signal is then generated from the digital input signal and the predistorted signal. The compensating signal generated thereby is converted into a second analog signal by a second D/A converter. The first analog signal and second analog signal are then added, this addition operation giving a compensated analog transmission signal. This analog transmission signal is supplied to the amplifier for amplification, and then transmitted via an antenna.

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