Adaptive predistortion device and method using digital receiver

Details Adaptive predistortion device and method using digital receiver Adaptive predistortion device and method using digital receiver

2006-04-25

2006-04-25

Liu, Shuwang (Department: 2634)

Pulse or digital communications

Transmitters

Antinoise or distortion

C375S295000, C375S297000, C330S149000

Reexamination Certificate

active

07035345

ABSTRACT:
An advanced adaptive baseband/RF predistorting device, which advantageously uses the concept of digital receiver technology into power amplifier (PA) linearization area. The predistorting device performs an instantaneous characterization of the PA using two digital receivers to supply its dynamic AM-AM and AM-PM transfer functions used to synthesize Look-Up Tables (LUT) which implement the complex predistortion function in order to compensate for any non-linearity and memory effects.

REFERENCES:
patent: 6246286 (2001-06-01), Persson
patent: 6677870 (2004-01-01), Im et al.
patent: 6741662 (2004-05-01), Francos et al.
patent: 6751447 (2004-06-01), Jin et al.
patent: 2001/0014592 (2001-08-01), Helms

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