DocumentCode :
3602987
Title :
On Improving Communication Robustness in PLC Systems for More Reliable Smart Grid Applications
Author :
Rabie, Khaled Maaiuf ; Alsusae, Emad
Author_Institution :
Sch. of Electr. & Electron. Eng., Univ. of Manchester, Manchester, UK
Volume :
6
Issue :
6
fYear :
2015
Firstpage :
2746
Lastpage :
2756
Abstract :
Power-line communication (PLC) has been the main enabler for modernizing the aging electrical power grid. As such, PLC systems have been the subject of intensive research in the community. One of the major aspects of PLC is the link interface, for which orthogonal frequency-division multiplexing (OFDM) has been widely adopted. In this paper, we propose the application of orthogonal poly-phase-based multicarrier code division multiple access (OPP-MC-CDMA) due to its inherent better flexibility and signal-envelope properties which can be utilized to further enhance the reliability of PLC signals. The proposed OPP-MC-CDMA system is implemented with a minimum mean square error equalizer and nonlinear preprocessing to overcome the effects of bursty noise and multipath frequency-selective fading commonly experienced in PLC channels. We study the performance of this system in terms of the output signal-to-noise ratio (SNR) and symbol error rate with various constellation sizes of OPP codes under different noise scenarios and nonlinear processor´s thresholds. For comparison-sake, the performance of the OFDM scheme is included. The results reveal that the proposed approach always provides superior performance over the OFDM one with a maximum output SNR gain of up to 5.25 dB. It is also shown that the performance of the OPP-MC-CDMA technique improves when increasing the constellation size of the OPP codes, which consequently enhances the reliability of PLC.
Keywords :
OFDM modulation; carrier transmission on power lines; code division multiple access; power system reliability; smart power grids; OPP-MC-CDMA; PLC signals; PLC systems; communication robustness improvement; electrical power grid; maximum output SNR gain; minimum mean square error equalizer; multipath frequency-selective fading; nonlinear preprocessing; nonlinear processor thresholds; orthogonal frequency-division multiplexing; orthogonal poly-phase-based multicarrier code division multiple access; power-line communication; signal-envelope properties; signal-to-noise ratio; smart grid applications reliability; symbol error rate; Blanking; Convolutional codes; Fading; Multicarrier code division multiple access; Power line communications; Blanking; clipping; convolutional codes; impulsive noise (IN); multicarrier code division multiple access (MC-CDMA); multipath fading channel; orthogonal poly-phase (OPP) codes; power-line communications (PLCs); smart grid (SG);
fLanguage :
English
Journal_Title :
Smart Grid, IEEE Transactions on
Publisher :
ieee
ISSN :
1949-3053
Type :
jour
DOI :
10.1109/TSG.2015.2430528
Filename :
7121021
Link To Document :
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