Title :
An adaptive data predistorter for compensation of nonlinear distortion in OFDM systems
Author :
Jeon, Won Gi ; Chang, Kyung Hi ; Cho, Yong Soo
Author_Institution :
Dept. of Electron. Eng., Chungang Univ., Seoul, South Korea
fDate :
10/1/1997 12:00:00 AM
Abstract :
In this paper, an adaptive data predistortion technique which can compensate for the nonlinear effect of a TWT high-power amplifier (HPA) in orthogonal frequency-division multiplexing (OFDM) systems is proposed. It is shown that the convergence time and MSE of an adaptive data predistorter can be significantly reduced by using a broadcasting technique and by designing appropriate training signals
Keywords :
adaptive systems; broadcasting; compensation; convergence of numerical methods; frequency division multiplexing; power amplifiers; quadrature amplitude modulation; travelling wave amplifiers; MSE; OFDM systems; QAM; TWT; adaptive data predistortion technique; broadcasting technique; convergence time; high-power amplifier; nonlinear distortion compensation; orthogonal frequency-division multiplexing; training signals design; Convergence; Digital video broadcasting; Frequency division multiplexing; Intersymbol interference; Nonlinear distortion; OFDM modulation; Predistortion; Quadrature amplitude modulation; Random access memory; Read-write memory;
Journal_Title :
Communications, IEEE Transactions on
