Proc. APSIPA Annual Summit and Conference,
Dec. 3-6, 2012, Hollywood, California USA, invited paper.
Cyclostationary Noise Mitigation in Narrowband Powerline Communications
Jing Lin and
Brian L. Evans
Department of Electrical
and Computer Engineering,
Wireless Networking and Communications Group,
The University of Texas at Austin,
Austin, TX 78712 USA
Smart Grid Communications Research at UT Austin
Future Smart Grid systems will intelligently monitor and control energy
flows in order to improve the efficiency and reliability of power delivery.
This monitoring and control requires low-delay, highly reliable, two-way
communication between customers, local utilities and regional utilities.
Narrowband powerline communication (NB-PLC) systems operating in the 3-500 kHz
band have been standardized to enable these two-way communication links.
In NB-PLC systems, additive non-Gaussian noise/interference is primary
limitation to the communication performance.
From field trials, the dominant source of this non-Gaussian noise/interference
In this paper, we address the problem of cyclostationary noise mitigation
in NB-PLC systems and other orthogonal frequency division multiplexing (OFDM)
The contributions of this paper include developing a parametric noise
estimation algorithm based on switching linear autoregressive (AR) process,
and a simple adaptive noise whitening approach that can be immediately
integrated into the conventional OFDM transceiver structure to improve its
In our simulations, the proposed noise whitening method achieves up to
3dB SNR gain over conventional OFDM systems at SNRs higher than -3dB.
COPYRIGHT NOTICE: All the documents on this server
have been submitted by their authors to scholarly journals or conferences
as indicated, for the purpose of non-commercial dissemination of
The manuscripts are put on-line to facilitate this purpose.
These manuscripts are copyrighted by the authors or the journals in which
they were published.
You may copy a manuscript for scholarly, non-commercial purposes, such
as research or instruction, provided that you agree to respect these
Last Updated 01/03/14.