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http://dx.doi.org/10.7840/KICS.2012.37A.4.197

A Technique Combining the Nonlinear Compensation and the Path Calibration by Using the Feedforward Scheme in Transmitting Array Antenna Systems  

Kim, Min (충남대학교 전자전파정보통신공학과 이동통신 연구실)
Eun, Chang-Soo (충남대학교 전자전파정보통신공학과 이동통신 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.37, no.4A, 2012 , pp. 197-204 More about this Journal
Abstract
We propose a new scheme combining the compensation of HPA nonlinearity and the calibration of the path imperfections in the downlink OFDM smart antenna systems. We use a two term third-order polynomial (without second-order term) and the feedforward method for compensation and calibration to make each path of the antenna array have equal characteristics. Since the proposed scheme does not alter the base-band signal, it can be applied to the smart antenna system independently of the base-band signal processing section. The result of computer simulations shows that, with the addition of only one third-order term, the adverse nonlinear effects can be effectively compensated, and the those of linear imperfections can be calibrated as well.
Keywords
Smart antenna; array antenna system; feedforward; compensation; calibration;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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