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Compressed sensing and interference occupancy monitoring for spectrum sharing in spectrally dense environments

Compressed sensing and interference occupancy monitoring for spectrum sharing in spectrally dense environments

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In this chapter, we analyze the general problem of a wideband radar that shares the same channel with a communication system, assuming that the communication band is divided into several frequency channels used for dynamic spectrum access (DSA). We specifically consider the case in which the radar is the secondary user (SU) and the communication system is the primary user (PU). In cognitive radio terminology, PUs are those who have higher priority or legacy rights to the usage of a specific part of the spectrum. SUs have lower priority and exploit the spectrum in such a way as to not cause interference to PUs. Therefore, SUs must possess some cognitive radio capabilities, such as an ability to sense the spectrum reliably to determine whether or not it is currently occupied by a PU. If the given channel becomes occupied by a PU, the SU must then move to an unused part of the spectrum, often referred to as white spaces or spectrum opportunities.

Chapter Contents:

  • 16.1 Introduction
  • 16.2 Cognitive spectrum sensing and sharing
  • 16.2.1 Cognitive cycle
  • 16.2.2 System architecture
  • 16.3 Channel characterization
  • 16.4 Compressed spectrum sensing
  • 16.5 Spectrum sharing
  • 16.6 Conclusions and looking ahead
  • References

Inspec keywords: compressed sensing; radar interference; radio spectrum management; broadband networks; cognitive radio

Other keywords: dynamic spectrum access; cognitive radio terminology; interference occupancy monitoring; several frequency channels; spectrum sharing; secondary user; wideband radar; cognitive radio capabilities; communication system; spectrally dense environments; DSA; legacy rights; primary user; compressed sensing

Subjects: Electromagnetic compatibility and interference; Signal processing and detection; Radio links and equipment

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