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Spectrum Sensing, Measurement, and Modeling

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Handbook of Cognitive Radio

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Abstract

Modeling spectrum sensing is a critical step that paves the way to (i) identify the key impairments that affect the detection performance and (ii) help develop algorithms and receiver architectures that mitigate these impairments. In this chapter, realistic and practical sensing models are presented beyond those developed for classical detection theory. These models capture the impact of different sensing receiver impairments on several detectors such as the energy, the pilot, and the cyclostationarity detectors. Several receiver nonidealities are investigated, including noise uncertainty, imperfect synchronization, and cyclic frequency offsets. In addition, challenges and impairments pertaining to wideband sensing are analyzed, including the presence of strong adjacent interferers as well as the nonlinearities of the receiver RF front-end. From these models, several mitigation techniques are developed to compensate for the presence of the different sensing receiver impairments. Measurements and simulation results are presented throughout the chapter to show the negative impact of such impairments and validate that the developed mitigation techniques provide tangible performance gains.

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Authors and Affiliations

  1. Electrical Engineering, University of California, Los Angeles (UCLA), Los Angeles, CA, USA

    Ghaith Hattab & Danijela Cabric

Authors
  1. Ghaith Hattab
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  2. Danijela Cabric
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Corresponding author

Correspondence to Ghaith Hattab .

Editor information

Editors and Affiliations

  1. School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, Australia

    Wei Zhang

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© 2019 Springer Nature Singapore Pte Ltd.

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Hattab, G., Cabric, D. (2019). Spectrum Sensing, Measurement, and Modeling. In: Zhang, W. (eds) Handbook of Cognitive Radio . Springer, Singapore. https://doi.org/10.1007/978-981-10-1394-2_5

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