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Disaster relief networks have to be highly adaptable and resilient. Cognitive radio enhanced ad-hoc architecture have been put forward as a candidate to enable such networks. Spectrum sensing is the cornerstone of the cognitive radio paradigm, and it has been the target of intensive research. The main common conclusion was that the achievable spectrum sensing accuracy can be greatly enhanced through...
In this paper we propose a mechanism to enable Flexible Spectrum Usage (FSU) in Local Area (LA) indoor deployment scenario of International Mobile Telecommunications-Advanced (IMT-A) with several operators in the given geographical area. The proposed scheme is referred to as policy assisted light Cognitive Radio (CR) enabled FSU, because it follows the CR cycle and considers policy as an important...
Currently International Telecommunications Union (ITU) is working on specifying the system requirements towards the next generation mobile communication systems called International Mobile Telecommunications-Advanced (IMT-A). This paper presents an overview on the technological requirements and current enhancements leading towards IMT-A. The relay nodes, support for higher bandwidth, local area indoor...
In this paper we propose a mechanism to enable flexible spectrum usage (FSU) in local area indoor deployment scenario with several operators in the given geographical area. The proposed scheme is referred to as policy assisted light cognitive radio (CR) enabled FSU, because it follows the CR cycle and considers policy as an important element to assist FSU. It facilitates allocation of spectral resources...
Future wireless services are expected to provide data-rates in the order of 1 Gbps in local area and 100 Mbps in wide area. A very wide bandwidth is required to support such high rates, in the order of 100 MHz: this wideband will not be available for each operator, thus a shared access to the spectrum among operators is needed. An holistic approach to spectrum sharing is adopted in this paper: not...
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