Abstract

The increasing demand for intelligent control and automation in industry requires better use of the radio spectrum due to the use of industrial wireless sensor networks (IWSNs). Cognitive Radio (CR) is a promising technology to improve the spectrum utilization by sensing spectrum holes. Research in this area is still in its infancy, but it is progressing rapidly. In this paper, industrial environment with different wireless technology, such as WirelessHART and ISA 100.11a is investigated. Various sensing schemes and the challenges associated for the cognitive radio are reviewed. In addition, the paper discussed the methods relevant to industrial applications, covering architecture, spectrum access, interference management, spectrum sensing and spectrum sharing.

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