@inproceedings{2553fe32c33b444bbf95c56d919f2f6f,
title = "Power amplifiers linearization based on digital predistortion with memory effects used in CDMA applications",
abstract = "Digital predistortion of a baseband signal is a well-known method of power amplifier (PA) linearization used to reduce adjacent channel interference (ACI) in a non constant envelope modulation system. This paper discusses the application of adaptive digital baseband predistortion linearization to radio frequency (RF) power amplifiers (PAs) that exhibit memory effects. This technique is a highly costeffective 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 (WOFDM), PA memory effects can no longer be ignored. In this paper a new technique for adaptation of digital predistorter that considers memory effects in power amplifiers is proposed. This method is a combination of two techniques, memory polynomial predistortion and slope-dependent method. This new technique is validated by using a 1.9 GHz 60W LDMOS power amplifier and various signals such as 2-carrier CDMA and 3-carrier CDMA.",
keywords = "ACPR, CDMA, Memory effect, Power amplifier, Predistortion",
author = "P. Varahram and Jamuar, {S. S.} and S. Mohammady and Hamidon, {M. N.} and S. Khatun",
year = "2007",
doi = "10.1109/ECCTD.2007.4529639",
language = "English",
isbn = "1424413427",
series = "European Conference on Circuit Theory and Design 2007, ECCTD 2007",
publisher = "IEEE Computer Society",
pages = "488--491",
booktitle = "European Conference on Circuit Theory and Design 2007, ECCTD 2007",
address = "United States",
note = "European Conference on Circuit Theory and Design 2007, ECCTD 2007 ; Conference date: 26-08-2007 Through 30-08-2007",
}