A nonlinear distortion compensation method with adaptive predistorter and negative feed-back for a narrow-band signal

Yitao Zhang, Osamu Muta, Yoshihiko Akaiwa

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The adaptive predistorter and the negative feedback system are known as methods to compensate for the nonlinear distortion of a power amplifier. Although the feedback method is a simple technique, its instability impedes the capability of high-feedback gain to achieve a highcompensation effect. On the other hand, the predistorter requires a long time for convergence of the adaptive predistorters. In this paper, we propose a nonlinear distortion compensation method for a narrow-band signal. In this method, an adaptive predistorter and negative feedback are combined. In addition, to shorten the convergence time to minimize nonlinear distortion, a variable step-size (VS) method is also applied to the algorithm to determine the parameters of the adaptive predistorter. Using computer simulations, we show that the proposed scheme achieves both five times faster convergence speed than that of the predistorter and three times higher permissible delay time in the feedback amplifier than that of a negative feedback only amplifier.

Original languageEnglish
Pages (from-to)2331-2337
Number of pages7
JournalIEICE Transactions on Communications
VolumeE91-B
Issue number7
DOIs
Publication statusPublished - Jan 1 2008

Fingerprint

Nonlinear distortion
Feedback
Feedback amplifiers
Power amplifiers
Time delay
Compensation and Redress
Computer simulation

All Science Journal Classification (ASJC) codes

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

A nonlinear distortion compensation method with adaptive predistorter and negative feed-back for a narrow-band signal. / Zhang, Yitao; Muta, Osamu; Akaiwa, Yoshihiko.

In: IEICE Transactions on Communications, Vol. E91-B, No. 7, 01.01.2008, p. 2331-2337.

Research output: Contribution to journalArticle

@article{b4ed661c61a44ccf8d595c23f80f55db,
title = "A nonlinear distortion compensation method with adaptive predistorter and negative feed-back for a narrow-band signal",
abstract = "The adaptive predistorter and the negative feedback system are known as methods to compensate for the nonlinear distortion of a power amplifier. Although the feedback method is a simple technique, its instability impedes the capability of high-feedback gain to achieve a highcompensation effect. On the other hand, the predistorter requires a long time for convergence of the adaptive predistorters. In this paper, we propose a nonlinear distortion compensation method for a narrow-band signal. In this method, an adaptive predistorter and negative feedback are combined. In addition, to shorten the convergence time to minimize nonlinear distortion, a variable step-size (VS) method is also applied to the algorithm to determine the parameters of the adaptive predistorter. Using computer simulations, we show that the proposed scheme achieves both five times faster convergence speed than that of the predistorter and three times higher permissible delay time in the feedback amplifier than that of a negative feedback only amplifier.",
author = "Yitao Zhang and Osamu Muta and Yoshihiko Akaiwa",
year = "2008",
month = "1",
day = "1",
doi = "10.1093/ietcom/e91-b.7.2331",
language = "English",
volume = "E91-B",
pages = "2331--2337",
journal = "IEICE Transactions on Communications",
issn = "0916-8516",
publisher = "Maruzen Co., Ltd/Maruzen Kabushikikaisha",
number = "7",

}

TY - JOUR

T1 - A nonlinear distortion compensation method with adaptive predistorter and negative feed-back for a narrow-band signal

AU - Zhang, Yitao

AU - Muta, Osamu

AU - Akaiwa, Yoshihiko

PY - 2008/1/1

Y1 - 2008/1/1

N2 - The adaptive predistorter and the negative feedback system are known as methods to compensate for the nonlinear distortion of a power amplifier. Although the feedback method is a simple technique, its instability impedes the capability of high-feedback gain to achieve a highcompensation effect. On the other hand, the predistorter requires a long time for convergence of the adaptive predistorters. In this paper, we propose a nonlinear distortion compensation method for a narrow-band signal. In this method, an adaptive predistorter and negative feedback are combined. In addition, to shorten the convergence time to minimize nonlinear distortion, a variable step-size (VS) method is also applied to the algorithm to determine the parameters of the adaptive predistorter. Using computer simulations, we show that the proposed scheme achieves both five times faster convergence speed than that of the predistorter and three times higher permissible delay time in the feedback amplifier than that of a negative feedback only amplifier.

AB - The adaptive predistorter and the negative feedback system are known as methods to compensate for the nonlinear distortion of a power amplifier. Although the feedback method is a simple technique, its instability impedes the capability of high-feedback gain to achieve a highcompensation effect. On the other hand, the predistorter requires a long time for convergence of the adaptive predistorters. In this paper, we propose a nonlinear distortion compensation method for a narrow-band signal. In this method, an adaptive predistorter and negative feedback are combined. In addition, to shorten the convergence time to minimize nonlinear distortion, a variable step-size (VS) method is also applied to the algorithm to determine the parameters of the adaptive predistorter. Using computer simulations, we show that the proposed scheme achieves both five times faster convergence speed than that of the predistorter and three times higher permissible delay time in the feedback amplifier than that of a negative feedback only amplifier.

UR - http://www.scopus.com/inward/record.url?scp=67651024979&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=67651024979&partnerID=8YFLogxK

U2 - 10.1093/ietcom/e91-b.7.2331

DO - 10.1093/ietcom/e91-b.7.2331

M3 - Article

AN - SCOPUS:67651024979

VL - E91-B

SP - 2331

EP - 2337

JO - IEICE Transactions on Communications

JF - IEICE Transactions on Communications

SN - 0916-8516

IS - 7

ER -