MTM-based spectrum sensing in cognitive Wireless Multimedia Sensor Networks (C-WMSNs)

Wireless Multimedia Sensor Network (WMSN) is a new application for WSNs, which demands high amount of resources such as bandwidth. A way in reply to the request of bandwidth is spectrum sensing, that increases the spectrum utilization. Therefore, an accurate, reliable and real-time method to obtain unused spectrum holes and available bands is required necessarily. Some methods have been introduced for spectrum sensing in cognitive radio (CR), which the multitaper method (MTM) is the most appealing. In other words, MTM can be a good choice for spectrum sensing in WMSNs, because it is not only an efficient technique for CR, but also is nearly optimal for wideband signals. In this paper, we propose a method for spectrum sensing in wireless multimedia sensor networks based on MTM.