IEEE Wireless Communications Magazine,
submitted June 1, 2019.
Hybrid Powerline/Wireless Diversity for Smart Grid Communications:
Design Challenges and Real-time Implementation
Junmo Sung (1),
Mostafa Sayed (2),
Mahmoud Elgenedy (3),
Brian L. Evans (1),
Naofal Al-Dhahir (3),
Il Han Kim (4), and
Khurram Waheed (5)
(1) Department of Electrical
and Computer Engineering,
Wireless Networking and Communications Group,
The University of Texas at Austin,
Austin, TX USA
(2) Samsung Semiconductor, Inc.,
San Jose, CA USA
(3) Department of Electrical Engineering,
The University of Texas at Dallas,
Richardson, TX USA
(4) Texas Instruments Inc.,
Dallas, TX USA
(5) NXP Semiconductors,
Austin, TX USA
Smart Grid Communications Research at UT Austin
Smart grids manage an intelligent energy delivery network enabled by
two-way communications between data concentrators operated by utility
companies and smart meters installed at the end users.
In particular, dynamic power-grid loading and peak load management are
the two main driving forces for bidirectional communications over the grid.
Narrowband power line communications (NB-PLC) and wireless communications
in the unlicensed frequency band (sub-1 GHz or 2.4 GHz) are the two main
communications technologies adopted to support the growing smart grid
Moreover, since NB-PLC and unlicensed wireless links experience channel
and interference with markedly different statistics, transmitting the
same information signal concurrently over both links significantly
enhances the smart grid communications reliability.
In this article, we compare various diversity combining schemes for
simultaneous power line and wireless transmissions.
Furthermore, we developed a real-time testbed for the hybrid PLC/wireless
system to demonstrate the performance enhancement achieved by PLC/wireless
diversity combining over a single link performance.
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Last Updated 06/02/19.