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A Technique Combining the Path Calibration and Nonlinear Compensation in a Transmitting Antenna Array System  

Lim, Sun-Min (ETRI)
Kim, Min (Chungnam National University)
Eun, Chang-Soo (Chungnam National University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.49, no.5, 2012 , pp. 27-36 More about this Journal
Abstract
We propose a new scheme combining the calibration of the path imperfections and the compensation of HPA nonlinearity in the downlink OFDM smart antenna systems. We use a two term third-order polynomial (without second-order term) and the indirect learning architecture for calibration and compensation, to make each path of the antenna array have equal characteristics. We test our scheme with computer simulations. The result shows that, with the addition of only one third-order term, the adverse nonlinear effects as well as the those of linear imperfections can be effectively compensated.
Keywords
Smart antenna; array antenna system; indirect learning architecture; calibration; compensation;
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