Performance of adaptive algorithms for compensation of radio over fiber links

Atso Hekkala; Mika Lasanen

doi:10.1109/WTS.2009.5068962

Performance of adaptive algorithms for compensation of radio over fiber links

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

19 Citations (Scopus)

Abstract

This paper considers the adaptive predistortion of the nonlinear distortions in a Radio over Fiber (RoF) link. In particular, we modify and compare two adaptive algorithms developed originally for the compensation of the linear systems, namely LMS and variable step size normalized LMS (VS NLMS). A recursive least squares (RLS) solution is used as a reference. Our simulation results indicate that over 40 dB improvement of adjacent channel power ratios can be achieved via the predistortion. Furthermore, we show that in the compensation of the nonlinear RoF link, the LMS can be used in such a way that its performance is comparable to more complex RLS.

Original language	English
Title of host publication	2009 Wireless Telecommunications Symposium
Publisher	IEEE Institute of Electrical and Electronic Engineers
Pages	1-5
ISBN (Electronic)	978-1-4244-2589-1
ISBN (Print)	978-1-4244-2588-4
DOIs	https://doi.org/10.1109/WTS.2009.5068962
Publication status	Published - 2009
MoE publication type	Not Eligible
Event	Wireless Telecommunications Symposium, WTS 2009 - Prague, Czech Republic Duration: 22 Apr 2009 → 24 Apr 2009

Conference

Conference	Wireless Telecommunications Symposium, WTS 2009
Abbreviated title	WTS 2009
Country/Territory	Czech Republic
City	Prague
Period	22/04/09 → 24/04/09

Keywords

LMS
polynomial predistorter
predistortion
RLS
RoF
VS NLMS

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10.1109/WTS.2009.5068962

Cite this

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title = "Performance of adaptive algorithms for compensation of radio over fiber links",

abstract = "This paper considers the adaptive predistortion of the nonlinear distortions in a Radio over Fiber (RoF) link. In particular, we modify and compare two adaptive algorithms developed originally for the compensation of the linear systems, namely LMS and variable step size normalized LMS (VS NLMS). A recursive least squares (RLS) solution is used as a reference. Our simulation results indicate that over 40 dB improvement of adjacent channel power ratios can be achieved via the predistortion. Furthermore, we show that in the compensation of the nonlinear RoF link, the LMS can be used in such a way that its performance is comparable to more complex RLS.",

keywords = "LMS, polynomial predistorter, predistortion, RLS, RoF, VS NLMS",

author = "Atso Hekkala and Mika Lasanen",

note = "Project code: 19083; Wireless Telecommunications Symposium, WTS 2009, WTS 2009 ; Conference date: 22-04-2009 Through 24-04-2009",

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doi = "10.1109/WTS.2009.5068962",

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T1 - Performance of adaptive algorithms for compensation of radio over fiber links

AU - Hekkala, Atso

AU - Lasanen, Mika

N1 - Project code: 19083

PY - 2009

Y1 - 2009

N2 - This paper considers the adaptive predistortion of the nonlinear distortions in a Radio over Fiber (RoF) link. In particular, we modify and compare two adaptive algorithms developed originally for the compensation of the linear systems, namely LMS and variable step size normalized LMS (VS NLMS). A recursive least squares (RLS) solution is used as a reference. Our simulation results indicate that over 40 dB improvement of adjacent channel power ratios can be achieved via the predistortion. Furthermore, we show that in the compensation of the nonlinear RoF link, the LMS can be used in such a way that its performance is comparable to more complex RLS.

AB - This paper considers the adaptive predistortion of the nonlinear distortions in a Radio over Fiber (RoF) link. In particular, we modify and compare two adaptive algorithms developed originally for the compensation of the linear systems, namely LMS and variable step size normalized LMS (VS NLMS). A recursive least squares (RLS) solution is used as a reference. Our simulation results indicate that over 40 dB improvement of adjacent channel power ratios can be achieved via the predistortion. Furthermore, we show that in the compensation of the nonlinear RoF link, the LMS can be used in such a way that its performance is comparable to more complex RLS.

KW - LMS

KW - polynomial predistorter

KW - predistortion

KW - RLS

KW - RoF

KW - VS NLMS

U2 - 10.1109/WTS.2009.5068962

DO - 10.1109/WTS.2009.5068962

M3 - Conference article in proceedings

SN - 978-1-4244-2588-4

SP - 1

EP - 5

BT - 2009 Wireless Telecommunications Symposium

PB - IEEE Institute of Electrical and Electronic Engineers

T2 - Wireless Telecommunications Symposium, WTS 2009

Y2 - 22 April 2009 through 24 April 2009

ER -

Performance of adaptive algorithms for compensation of radio over fiber links

Abstract

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Keywords

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