Digital precompensation of imperfections in quadrature modulators.

Digital precompensation of imperfections in quadrature modulators.

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...

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Bibliographic Details
Published in:IEEE Transactions on communications 48, 4 (2000).
Main Author: Marchesani, R.
Format: Article
Language:English
Subjects:
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.