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Dynamic spectrum sharing paradigm is envisaged to meet the growing demand forthe Radio Frequency (RF) spectrum. There exist several technical, regulatory,and business impediments for adopting the new paradigm. In this regard, weunderscore the need of characterizing and quantifying the use of spectrum byeach of the individual transmitters and receivers.  We propose MUSE, a methodology to characterize and quantify the use ofspectrum in the space, time, and frequency dimensions. MUSE characterizes theuse of spectrum by a transmitter at a point in terms of the RF power occupiedby the transmitter. It characterizes the use of spectrum by a receiver at apoint in terms of the constraints on the RF-power that can be occupied by anyof the transmitters in the system in order to ensure successful reception. Itdivides the spectrum-space into discrete unit-spectrum-spaces and quantifiesthe spectrum used by the individual transceivers in the discretized spectrumspace.  We characterize the performance of the spectrum management functions in thediscretized spectrum-space and illustrate maximizing the use of spectrum. Inorder to address the challenges for the dynamic spectrum sharing paradigm, weemphasize on articulating, defining, and enforcing the spectrum-access rightsin the discretized spectrum-space.

MUSE: A Methodology for Characterizing and Quantifying the Use of Spectrum