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2019 | Buch

Data-Driven Wireless Networks

A Compressive Spectrum Approach

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Über dieses Buch

This SpringerBrief discusses the applications of spare representation in wireless communications, with a particular focus on the most recent developed compressive sensing (CS) enabled approaches. With the help of sparsity property, sub-Nyquist sampling can be achieved in wideband cognitive radio networks by adopting compressive sensing, which is illustrated in this brief, and it starts with a comprehensive overview of compressive sensing principles. Subsequently, the authors present a complete framework for data-driven compressive spectrum sensing in cognitive radio networks, which guarantees robustness, low-complexity, and security.

Particularly, robust compressive spectrum sensing, low-complexity compressive spectrum sensing, and secure compressive sensing based malicious user detection are proposed to address the various issues in wideband cognitive radio networks. Correspondingly, the real-world signals and data collected by experiments carried out during TV white space pilot trial enables data-driven compressive spectrum sensing. The collected data are analysed and used to verify our designs and provide significant insights on the potential of applying compressive sensing to wideband spectrum sensing.

This SpringerBrief provides readers a clear picture on how to exploit the compressive sensing to process wireless signals in wideband cognitive radio networks. Students, professors, researchers, scientists, practitioners, and engineers working in the fields of compressive sensing in wireless communications will find this SpringerBrief very useful as a short reference or study guide book. Industry managers, and government research agency employees also working in the fields of compressive sensing in wireless communications will find this SpringerBrief useful as well.

Inhaltsverzeichnis

Frontmatter

Background

Frontmatter
Chapter 1. Introduction
Abstract
Radio frequency (RF) spectrum is a valuable but tightly regulated resource due to its unique and important role in wireless communications. The demand for RF spectrum is increasing due to a rapidly expanding market of multimedia wireless services, while the usable spectrum is becoming scarce due to current rigid spectrum allocation policies.
Yue Gao, Zhijin Qin
Chapter 2. Sparse Representation in Wireless Networks
Abstract
This chapter provides an overview of the background knowledge of sparse representation with particular focus on compressive sensing, including basic principles of CS, reweighted CS, and distributed CS. Moreover, this chapter also introduces the basic framework of compressive spectrum sensing, which applies compressive sensing to wideband spectrum sensing to achieve sub-Nyquist sampling.
Yue Gao, Zhijin Qin

Compressive Spectrum Sensing Algorithms

Frontmatter
Chapter 3. Data-Driven Compressive Spectrum Sensing
Abstract
In this chapter, the related work and the main contributions are firstly introduced in Sect. 3.1. In Sect. 3.2, the proposed data-driven compressive spectrum sensing framework is presented, in which geolocation database is used to provide prior information for signal recovery. Additionally, Sect. 3.3 gives the numerical results of the proposed framework. Finally, Sect. 3.4 concludes this chapter.
Yue Gao, Zhijin Qin
Chapter 4. Robust Compressive Spectrum Sensing
Abstract
In this chapter, the existing work on compressive spectrum sensing in CRNs and the main contributions are firstly reviewed in Sect. 4.1. In Sect. 4.2, the proposed robust compressive spectrum sensing working at a single CR user is presented. Section 4.3 gives the related simulation results. Additionally, the proposed robust sub-Nyquist spectrum sensing algorithm for the CSS scenario is demonstrated in Sect. 4.4, in which the low-rank MC technique is invoked to perform signal recovery. The numerical results are presented in Sect. 4.5. Finally, Sect. 4.6 concludes this chapter.
Yue Gao, Zhijin Qin
Chapter 5. Secure Compressive Spectrum Sensing
Abstract
In this chapter, a malicious user detection model is proposed to improve the security of CSS networks. The low-rank MC technique is invoked in the proposed model. More specifically, Sect. 5.1 introduces the related work and main contributions of the work in this chapter. Section 5.2 describes the system model of CSS networks with malicious users. Section 5.3 presents the proposed low-rank MC-based malicious user detection framework along with the proposed rank estimation algorithm and the estimation strategy for the number of malicious users. Section 5.4 shows the numerical analyses of the proposed framework on both simulated and real-world signals. Section 5.5 concludes this chapter.
Yue Gao, Zhijin Qin

Conclusions

Frontmatter
Chapter 6. Conclusions and Future Work
Abstract
This book presented research work on the promising applications of compressive sensing (CS) technique in wideband spectrum sensing, which is regarded as one of the most challenging tasks in cognitive radio networks (CRNs). It has been demonstrated that CS is capable of enabling sub-Nyquist sampling at secondary users (SUs), by exploiting the natural sparsity of spectral signals. By invoking CS technique, the signal sampling costs at SUs are significantly reduced, which is of great significance in CRNs as the SUs are normally energy-constrained devices. Within this book, the fundamental research has been presented on the design of novel compressive spectrum sensing algorithms, with particular efforts to improve energy efficiency, robustness, and security of CRNs. All the proposed designs are verified by real-world data, which also demonstrated the potential of data-driven compressive spectrum sensing.
Yue Gao, Zhijin Qin
Metadaten
Titel
Data-Driven Wireless Networks
verfasst von
Yue Gao
Zhijin Qin
Copyright-Jahr
2019
Electronic ISBN
978-3-030-00290-9
Print ISBN
978-3-030-00289-3
DOI
https://doi.org/10.1007/978-3-030-00290-9

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