Paper Info
Title
Time-Frequency Modulation Diversity To Combat Periodic Impulsive Noise In Narrowband Powerline Communications
Abstract
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 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 (1) 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 (2) 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. 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.
Year
DOI
Venue
2015
10.1109/TCOMM.2015.2411601
IEEE Trans. Communications
Keywords
Field
DocType
Noise,OFDM,Modulation,Narrowband,Time-frequency analysis,Receivers,Transmitters
Demodulation,Narrowband,Computer science,Modulation,Electronic engineering,Impulse noise,Noise (radio),Additive white Gaussian noise,Gaussian noise,Orthogonal frequency-division multiplexing
Journal
Volume
Issue
ISSN
PP
99
0090-6778
Citations 
PageRank 
References 
0
0.34
23
Authors
5
Name
Order
Citations
PageRank
Jing Lin1578.71
Tarkesh Pande2456.71
Il-Han Kim318217.49
Anuj Batra410613.78
B. L. Evans52819228.43