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


Vol. 37,  No. 4, pp. 197-204, Apr.  2012


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  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.

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  Cite this article

[IEEE Style]

M. Kim and C. Eun, "A Technique Combining the Nonlinear Compensation and the Path Calibration by Using the Feedforward Scheme in Transmitting Array Antenna Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 37, no. 4, pp. 197-204, 2012. DOI: .

[ACM Style]

Min Kim and Changsoo Eun. 2012. A Technique Combining the Nonlinear Compensation and the Path Calibration by Using the Feedforward Scheme in Transmitting Array Antenna Systems. The Journal of Korean Institute of Communications and Information Sciences, 37, 4, (2012), 197-204. DOI: .

[KICS Style]

Min Kim and Changsoo Eun, "A Technique Combining the Nonlinear Compensation and the Path Calibration by Using the Feedforward Scheme in Transmitting Array Antenna Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 37, no. 4, pp. 197-204, 4. 2012.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880