Proc. IEEE International Conference on Communications,
June 8-12, 2015, London, England.
Robust Transceiver to Combat Periodic Impulsive Noise in
Narrowband Powerline Communications
Jing Lin (1)
Tarkesh Pande (2),
Il-Han Kim (2),
Anuj Batra (2) and
Brian L. Evans (1)
(1) Department of Electrical
and Computer Engineering,
Wireless Networking and Communications Group,
The University of Texas at Austin,
Austin, TX 78712 USA
(2) Texas Instruments, Dallas, TX USA.
Paper Draft -
Smart Grid Communications Research at UT Austin
Non-Gaussian noise/interference severely limits communication
performance of narrowband powerline communication (PLC) systems.
Such noise/interference is dominated by periodic impulsive noise
whose statistics varies with the AC cycle.
The periodic impulsive noise statistics deviate significantly from
that of additive white Gaussian noise, thereby causing dramatic
performance degradation in conventional narrowband PLC systems.
In this paper, we propose a robust transmission scheme and
corresponding receiver methods to combat periodic impulsive noise
in OFDM-based narrowband PLC.
Towards that end, we propose
In the simulations, compared with a narrowband PLC system using
Reed-Solomon and convolutional coding, whole-packet interleaving and
DBPSK/BPSK modulation, our proposed transceiver methods achieve up to
8 dB gains in Eb/N0 with convolutional coding
and a smaller-sized interleaver/deinterleaver.
- a time-frequency modulation diversity scheme at the transmitter
and a diversity demodulator at the receiver to improve communication
reliability without decreasing data rates; and
- a semi-online algorithm that exploits the sparsity of the noise
in the frequency domain to estimate the noise power spectrum for
reliable decoding at the diversity demodulator.
Questions & Answers
Question: Which techniques in the talk are applicable for existing
narrowband OFDM powerline communications solutions?
Answer: The noise variance estimation technique is a receiver-only
technique and thus can be applied in existing receivers whereas the
TFDM requires changes to the transmitter and receiver.
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Last Updated 06/25/15.