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An improvement method for reducing power amplifiers memory effects based on complex gain predistortion


Citation

Varahram, Pooria and Mohammady, Somayeh and Hamidon, Mohd Nizar and Mohd Sidek, Roslina and Khatun, Sabira (2010) An improvement method for reducing power amplifiers memory effects based on complex gain predistortion. Australian Journal of Basic and Applied Sciences, 4 (7). pp. 2059-2067. ISSN 1991-8178

Abstract

Efficient RF power amplifiers used in third generation systems require linearization in order to reduce adjacent channel inter-modulation distortion, without sacrificing efficiency. Digital baseband predistortion is a highly cost-effective way to linearize power amplifiers (PAs), but most existing architectures assume that the PA has a memoryless nonlinearity. For wider bandwidth applications such as wideband code-division multiple access (WCDMA) or wideband orthogonal frequency-division multiplexing (W-OFDM), PA memory effects can no longer be ignored. In this paper we proposed a technique for adaptation of digital predistorter that considers memory effects in power amplifiers.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Publisher: American-Eurasian Network for Scientific Information
Keywords: ACPR; CDMA; Digital predistortion; Memory effect; Power amplifier
Depositing User: Nabilah Mustapa
Date Deposited: 26 Jan 2016 01:40
Last Modified: 26 Jan 2016 01:40
URI: http://psasir.upm.edu.my/id/eprint/13041
Statistic Details: View Download Statistic

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