DocumentCode
1338198
Title
Digital precompensation of imperfections in quadrature modulators
Author
Marchesani, Rossano
Author_Institution
Thomson-CSF Electron. Syst. Italia, Scalo, Italy
Volume
48
Issue
4
fYear
2000
fDate
4/1/2000 12:00:00 AM
Firstpage
552
Lastpage
556
Abstract
Residual carrier, balance, and quadrature error imperfections that are normally present in phase/quadrature modulators limit the use of direct modulation techniques in some applications. The classical precompensation techniques are revised and an adaptive solution proposed that improves performance by some order of magnitude
Keywords
adaptive signal processing; convergence of numerical methods; error analysis; least mean squares methods; modulators; phase shift keying; quadrature amplitude modulation; QAM; adaptive LMS compensation; adaptive precompensation; balance error; digital precompensation; direct modulation techniques; fast convergence; performance; phase shift keying; phase/quadrature modulators; quadrature error imperfections; quadrature modulators; residual carrier; Convergence; Digital modulation; Digital relays; Frequency; Land mobile radio; Least squares approximation; Phase modulation; Predistortion; Resonance light scattering; TV broadcasting;
fLanguage
English
Journal_Title
Communications, IEEE Transactions on
Publisher
ieee
ISSN
0090-6778
Type
jour
DOI
10.1109/26.843122
Filename
843122
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