Due to interference between co-located wireless networks, obtaining accurate channel assessment becomes\r\nincreasingly important for wireless network configuration. This information is used, among others, for cognitive radio\r\nsolutions and for intelligent channel selection in wireless networks. Solutions such as spectrum analyzers are capable\r\nof scanning a wide spectrum range, but are not dedicated for channel occupation assessment because they are\r\nextremely costly and not able to perform continuous recording for a time period longer than a few seconds. On the\r\nother hand, low-cost solutions lack the flexibility and required performance in terms of configuration and sensing\r\nefficiency. To remedy the situation, this paper presents an alternative for channel assessment on top of a commercial\r\nsoftware-defined radio platform. Although there exist software solutions for performing spectrum sensing on such\r\nplatforms, to the best of our knowledge, continuous spectrum sensing and long-term recording remain challenging.\r\nWe propose a pioneering solution that is capable of seamless spectrum sensing over a wide spectrum band and\r\nguarantees sufficient flexibility in terms of configurations. The proposed solution is validated experimentally. We\r\ndemonstrate two advantages of seamless spectrum sensing: the capability of accurate channel occupancy\r\nmeasurement and detecting transient signals such as Bluetooth.
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