What is a Spectrum Hole and What Does it Take to Recognize One?


ldquoSpectrum holesrdquo represent the potential opportunities for noninterfering (safe) use of spectrum and can be considered as multidimensional regions within frequency, time, and space. The main challenge for secondary radio systems is to be able to robustly sense when they are within such a spectrum hole. To allow a unified discussion of the core… (More)
DOI: 10.1109/JPROC.2009.2015710


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