IEEE Transactions on Communications,
vol. 63, no. 5, pp. 1837-1849, May 2015,
Time-Frequency Modulation Diversity 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.
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 deviates significantly
from that of additive white Gaussian noise, thereby causing
dramatic performance degradation in conventional narrowband
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.
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Last Updated 06/24/15.