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Compensation of transmitter distortion using a nonlinear modeling approach

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5 Author(s)
Cao, H. ; Dept. of Microtechnol. & Nanosci., Chalmers Univ. of Technol., Gothenburg ; Tehrani, A.S. ; Fager, C. ; Eriksson, T.
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In this paper, a nonlinear modeling approach is used to demonstrate a joint compensation scheme for the linear and nonlinear distortions in the I/Q modulator and the power amplifier. Based on this nonlinear model, a digital pre-compensator is constructed. The effects of these two most dominant nonlinear components in a modern transmitter can therefore be digitally pre-compensated in a single step. The results are verified by experiments, and the proposed approach shows promising performance.

Published in:

Integrated Nonlinear Microwave and Millimetre-Wave Circuits, 2008. INMMIC 2008. Workshop on

Date of Conference:

24-25 Nov. 2008