DocumentCode :
777663
Title :
Blind Compensation of Linear Amplitude Distortions
Author :
Fertonani, Dario ; Barbieri, Alan ; Colavolpe, Giulio ; Delaruelle, Daniel
Author_Institution :
Dipt. di Ing. dell´´Inf., Univ. di Parma, Parma
Volume :
54
Issue :
3
fYear :
2008
Firstpage :
448
Lastpage :
453
Abstract :
The estimation and the compensation of particular amplitude distortions, typically affecting the consumer-grade receivers in broadband satellite communications, are considered. The distortion filter is modeled as a linear function of the frequency with unknown slope. We present a novel slope estimator, analytically derived by exploiting the spectral properties of the distorted signal, which results to be unbiased and does not exhibit false locks in the scenarios of practical interest. Since an ideal slope compensator would require an unmanageable filtering, we focus on a low-complexity compensation filter that ensures nearly the same performance. Extensive simulation results prove the effectiveness and the robustness of the proposed solution, which can also work blindly at very low values of the signal-to-noise ratio.
Keywords :
broadband networks; compensation; distortion; filtering theory; satellite communication; blind compensation; broadband satellite communications; consumer-grade receivers; distortion filter; linear amplitude distortions; low-complexity compensation filter; signal-to-noise ratio; slope estimator; Amplitude estimation; Broadband communication; Distortion; Filtering; Frequency; Nonlinear filters; Robustness; Satellite communication; Signal analysis; Signal to noise ratio; Blind compensation; broadband satellite communications; channel estimation; linear amplitude distortions;
fLanguage :
English
Journal_Title :
Broadcasting, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9316
Type :
jour
DOI :
10.1109/TBC.2008.2000466
Filename :
4555245
Link To Document :
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