NDLI: Accurate characterization and compensation of phase noise in OFDM receiver

Content Provider	IEEE Xplore Digital Library
Author	Mathecken, P. Riihonen, T. Werner, S. Wichman, R.
Copyright Year	2011
Description	Author affiliation: Aalto University, School of Electrical Engineering, Department of Signal Processing and Acoustics, P.O. Box 13000, FI-00076, Finland (Mathecken, P.; Riihonen, T.; Werner, S.; Wichman, R.)
Abstract	Phase noise compensation for OFDM based wireless systems is a necessary task to be performed in order to achieve good performance using cheap components in the transceiver electronics. In this paper, we propose a decision-feedback-frequency-domain compensation method that utilizes Bayesian a priori information of the phase noise process. The a priori information is characterized in terms of the probability density functions of the spectral components of the phase noise process. We show in this work that, for reasonable ratios of phase noise 3dB bandwidth to OFDM subcarrier spacing, the density functions can be expressed as a sum of two independent random variables: The first variable follows a Gaussian distribution while the second variable has a distribution which is a weighted sum of gamma distributions. With this prior knowledge of the probability density functions, we derive the minimum mean square error estimator for spectral components of phase noise which is then used for phase noise compensation.
Starting Page	1948
Ending Page	1952
File Size	288336
Page Count	5
File Format	PDF
ISBN	9781467303217
ISSN	10586393
e-ISBN	9781467303231
DOI	10.1109/ACSSC.2011.6190364
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-11-06
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Phase noise OFDM Random variables Eigenvalues and eigenfunctions Equations Receivers Vectors
Content Type	Text
Resource Type	Article
Subject	Signal Processing Computer Networks and Communications

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