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Compensation of Transmitter Distortion Using a Nonlinear Modeling Approach

Haiying Cao (Institutionen för mikroteknologi och nanovetenskap ; GigaHertz Centrum) ; Ali Soltani Tehrani (Institutionen för signaler och system, Kommunikationssystem ; GigaHertz Centrum) ; Christian Fager (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik ; GigaHertz Centrum) ; Thomas Eriksson (Institutionen för signaler och system, Kommunikationssystem ; GigaHertz Centrum) ; Herbert Zirath (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik ; GigaHertz Centrum)
International Workshop on Integrated Nonlinear Microwave and Millimetre-wave Circuits 2008 p. 131-134. (2008)
[Konferensbidrag, refereegranskat]

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.

Nyckelord: I/Q imbalance, I/Q modulator, power amplifier, transmitter, Volterra series.



Denna post skapades 2009-01-07. Senast ändrad 2016-02-01.
CPL Pubid: 83783