DocumentCode
2473320
Title
Correlation techniques for estimation of amplifier nonlinearity
Author
Li, M.Y. ; Galton, I. ; Larson, L.E. ; Asbeck, P.M.
Author_Institution
California Univ., San Diego, La Jolla, CA, USA
fYear
2004
fDate
19-22 Sept. 2004
Firstpage
179
Lastpage
182
Abstract
Nonlinearity characterization is critical to amplifier linearization. It is shown that correlation techniques can be used to provide an estimate of amplifier nonlinearity. The output envelope is cross-correlated with a test sequence generated by forming the product of multiple uncorrelated input sequences, to yield estimates of the low order nonlinearity coefficients. The proposed method can be employed in the background during amplifier operation to estimate amplifier nonlinearity with IS-95 forward-link CDMA signals.
Keywords
code division multiple access; correlation methods; mobile radio; nonlinear estimation; nonlinear network analysis; parameter estimation; power amplifiers; IS-95 forward-link CDMA signals; amplifier linearization; amplifier nonlinearity estimation; correlation techniques; mobile radio; multiple uncorrelated input sequences; power amplifiers; test sequence; Character generation; Distortion measurement; Linearity; Multiaccess communication; Operational amplifiers; Polynomials; Power amplifiers; Power measurement; Signal generators; Testing;
fLanguage
English
Publisher
ieee
Conference_Titel
Radio and Wireless Conference, 2004 IEEE
Print_ISBN
0-7803-8451-2
Type
conf
DOI
10.1109/RAWCON.2004.1389102
Filename
1389102
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