Exact(4)
Most of the published articles deal however with a restricted problem: spectrum management.
The reason is threefold: (i) Peculiar to the spectrum sensing problem, spectrum occupancy could best be represented with a Bernoulli process, which is a special case of Markov chain.
In order to improve the network performances of distributed CWNs, several challenges should be considered, such as the common control channel (CCC) problem, spectrum sensing scheduling strategy, power control mechanism, multi-channel hidden, and exposed terminal problems, access coordination mechanism, and mobility.
33 We focus on functional somatic symptoms (FSS), a problem spectrum of bodily complaints which are not confidently explained by organic disorders, and which are relevant to study over the life course due to their frequency, and sometimes persistence, across the life course.
Similar(56)
So, where on the inconvenience-to-problem spectrum would you put "a bunch of White House tours have been canceled"?
This only allowed a rough descriptive classification to problems related to anxiety, depression, suicidal behaviours, conduct problems, autism spectrum related problems, substance abuse, psychotic symptoms and other.
It can also mitigate the problem of spectrum overfragmentation and thus the spectrum can be more efficiently utilized.
Therefore, novel techniques and approaches are required to address the problem of spectrum scarcity in VANETs allowing an efficient use of radio spectrum.
SDR offers a perfect solution to this problem of spectrum scarcity being experienced in wireless communication systems.
In 1925, after an extended visit to Bohr's Institute of Theoretical Physics at the University of Copenhagen, Heisenberg tackled the problem of spectrum intensities of the electron taken as an anharmonic oscillator (a one-dimensional vibrating system).
Finally, there is the more general problem of spectrum scarcity.
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Justyna Jupowicz-Kozak
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