Error adjustment in direct conversion architectures

Details Error adjustment in direct conversion architectures Error adjustment in direct conversion architectures

2003-04-08

2009-12-01

Fan, Chieh M (Department: 2611)

Pulse or digital communications

Transmitters

Antinoise or distortion

C455S114300

Reexamination Certificate

active

07627055

ABSTRACT:
An error adjustment method of equalizing transmission characteristics of a signal processing circuitry is disclosed. In a first step, an original complex IQ signal is generated, on which error adjustment is performed. Then, the adjusted complex IQ signal is processed in the signal processing circuitry, thereby obtaining a processed real signal. The envelope of the real signal is detected and this real signal envelope and the original complex IQ signal are synchronized. The envelope of the original complex IQ signal is derived and the synchronized real signal envelope is compared with the synchronized original IQ signal envelope at two consecutive time instances. Finally, a processed complex IQ signal is obtained from the real signal envelope on the basis of the comparison result, which processed complex IQ signal is used in performing error adjustment.

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