Predistortion of Radio Over Fiber Links: Algorithms, Implementation, and Measurements

Hekkala, Atso and Hiivala, Mikko and Lasanen, Mika and Perttu, Jari and Vieira, Luis C. and Gomes, Nathan J. and Nkansah, Anthony (2012) Predistortion of Radio Over Fiber Links: Algorithms, Implementation, and Measurements. IEEE Transactions on Circuits and Systems I: Regular Papers, 59 (3). pp. 664-672. ISSN 1549-8328. (doi:https://doi.org/10.1109/TCSI.2011.2167267) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://dx.doi.org/10.1109/TCSI.2011.2167267

Abstract

Distributed antenna systems (DASs) have been proposed for use in high-data-rate wireless communications. Connecting the central unit to remote antenna units, radio over fiber (RoF) links become essential parts of the DAS. One of the major problems in the RoF links is the nonlinear distortion experienced in its optoelectronic devices. This paper considers the adaptive compensation of the nonlinear RoF link. In particular, we present an extension to the conventional least-mean-square algorithm for memory-polynomial-based predistortion. In addition, we study different combinations of the algorithms for the predistortion. Moreover, we implement the adaptive predistorter in hardware, build a real RoF link, and verify the performance by measurements. The results demonstrate that distortion of the RoF link can be considerably diminished with a low complexity design.

Item Type: Article
Uncontrolled keywords: INSPEC: CONTROLLED INDEXING antennas distortion least mean squares methods polynomials radio-over-fibre INSPEC: NON CONTROLLED INDEXING DAS RoF links distributed antenna systems high-data-rate wireless communications least-mean-square algorithm memory-polynomial-based predistortion nonlinear distortion radio over fiber links predistortion AUTHOR KEYWORDS Adaptive compensation field programmable gate array (FPGA) least mean square (LMS) radio over fiber recursive least squares (RLS) IEEE TERMS Field programmable gate arrays Least squares approximation Modulation Nonlinear distortion OFDM Predistortion Signal processing algorithms
Subjects: T Technology
Divisions: Faculties > Sciences > School of Engineering and Digital Arts
Faculties > Sciences > School of Engineering and Digital Arts > Broadband & Wireless Communications
Depositing User: Tina Thompson
Date Deposited: 28 Oct 2013 11:01 UTC
Last Modified: 28 Oct 2013 11:01 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/35683 (The current URI for this page, for reference purposes)
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