Look-up-table predistortion technique based on polynomial nonlinearity compensation in OFDM systems

Authors:
Minjie Gong;Jianguo Yu;Liang He
Affiliations:
School of Electronic Engineering, Beijing University of Post & Telecommunication, Beijing, China;School of Electronic Engineering, Beijing University of Post & Telecommunication, Beijing, China;Beijing Northern Fiber Home Technologies CO., LTD, Beijing, China
Venue:
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Year:
2009

Citing 2
Cited 0

A Least-Squares Volterra Predistorter for Compensation of Non-Linear Effects with Memory in OFDM Transmitters

CNSR '05 Proceedings of the 3rd Annual Communication Networks and Services Research Conference
A Generalized Memory Polynomial Model for Digital Predistortion of RF Power Amplifiers

IEEE Transactions on Signal Processing

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Abstract

A novel Look-Up-Table (LUT) predistortion power amplifier (PA) linearizer for OFDM systems is proposed in this paper. To improve conventional LUT linearizer, we employ Polynomial predistortion method to compensate the nonlinearity of PA through a filter. The provided method can speedup the algorithm convergence of LUT while reduce adjacent channel interference (ACI). In addition, hardware requirement of conventional LUT linearizer can also be decreased. The analysis, simulation and measured results are presented to validate the expected performances of the proposed method, a comparison with the conventional LUT linearizer is included.