Spectrum sensing in cognitive radio networks: requirements, challenges and design trade-offs

By A. Ghasemi, Elvino Silveira Sousa. IEEE Communications Magazine, 2008

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Overview of radar waveform diversity (2016, background): “Doing so in a manner that involves listening to the spectral environment [176] and modifying one’s emissions accordingly [177] is considered a form of cognitive sensing [178, 179].”
Recent Advances in Cloud Radio Access Networks: System Architectures, Key Techniques, and Open Issues (2016, background): “Fo r example, to achieve spectrum sensing function, the complex ity of transceiver is relatively high [146].”
Signal Processing in Cognitive Radio (2009, methodology): “Here we elaborate the stringent signal processing requirements for detection of spatial spectrum holes from a geographic perspective as in [6] and [7].”
Ten years of research in spectrum sensing and sharing in cognitive radio (2012, neutral): “This procedure is called spectrum sensing [8-10].”
Green Cellular Networks: A Survey, Some Research Issues and Challenges (2011, background): “Spectrum sensing is further complicated due to uncertainty in interference from other secondary networks [96].”
Cognitive Network Interference (2011, background): “For example, if a communication channel is active between the primary and secondary networks, the busy channel assessment can be based on the detection of a preamble shared between the primary and secondary networks or on the energy sensing of the primary network radio signals [8]–[10].”