Cognitive Radio-Based Smart Grids: From the Perspective of Full-Duplex Primary Users | Zendy

Dongming Li | Zendy; Zhixin Sun | Zendy; Xuejian Zhao | Zendy

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Cognitive Radio-Based Smart Grids: From the Perspective of Full-Duplex Primary Users

Author(s) -

Dongming Li,

Zhixin Sun,

Xuejian Zhao

Publication year - 2018

Publication title -

ieee access

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.587

H-Index - 127

ISSN - 2169-3536

DOI - 10.1109/access.2018.2846764

Subject(s) - aerospace , bioengineering , communication, networking and broadcast technologies , components, circuits, devices and systems , computing and processing , engineered materials, dielectrics and plasmas , engineering profession , fields, waves and electromagnetics , general topics for engineers , geoscience , nuclear engineering , photonics and electrooptics , power, energy and industry applications , robotics and control systems , signal processing and analysis , transportation

Cognitive radio (CR) is promising for smart grids (SGs) in terms of overcoming the problem of spectrum inefficiency and interference mitigation. With the intensive research into full-duplex communication technologies, the licensed spectrum available for CR-based SGs (CR-SGs) may be more complex and difficult to use, as more primary traffic exists on the licensed spectrum. As a result, CR-SGs may experience more severe interference from primary users (PUs), and the corresponding transmission opportunities may be impaired. In this paper, based on distinctive polarization features of samples from different PUs, the signal polarization of each PU is extracted from the hybrid samples by studying the polarization similarity of the samples. Based on the signal polarization derived for each PU, the transmitting opportunities for CR-SGs can be derived. Both the interference from CR-SGs to PUs and the throughput of CR-SGs are examined. Numerical results show that the spectrum opportunities for CR-SGs can be guaranteed and that the interference inflicted on PUs is at a satisfactory level.

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