This study is based on using the optimization problem of linear cooperative spectrum sensing (CSS) techniques for analysis and correlation allocation to secondary users (SUs) without interfering with operations primary users.

Abstract Cooperative spectrum sensing (CSS) is a process of achieving spatial diversity gain to make global decision for cognitive radio networks (CRNs). However, the accuracy effects owing presence Byzantine during cooperative sensing, therefore causing severe performance degradation CSS. In front malicious users (MUs) launching attack, robust defense framework proposed defend against attack a...

This study is based on using the optimization problem of linear cooperative spectrum sensing (CSS) techniques for analysis and correlation allocation to secondary users (SUs) without interfering with operations primary users.

A common concern regarding cooperative spectrum sensing (CSS) schemes is the occupied bandwidth and the energy consumption during the transmissions of sensing information to the fusion center over the reporting control channels. This concern is intensified if the number of cooperating secondary users in the network is large. This article presents a new fusion strategy for a CSS scheme, aiming a...

This paper is concerned with cooperative spectrum sensing (CSS) mechanisms in three-hop cognitive wireless relay networks (CWRNs). The data transmission from a source to a destination is realised with the aid of two layers of cognitive radio (CR) users which are in the transmission coverage of two primary users. In this paper, we first propose a new CSS scheme for a layer of CR users to improve...

In cognitive radio communication, spectrum sensing plays a vital role in sensing the existence of the primary user (PU). The sensing performance is badly affected by fading and shadowing in case of single secondary user(SU). To overcome this issue, cooperative spectrum sensing (CSS) is proposed. Although the reliability of the system is improved with cooperation but existence of malicious user ...

The spectrum sensing method's dependability is greatly influenced by two of the most crucial factors, including various fading channels and nearby wireless users. Multipath fading, buried terminals, shadowing are just a few challenges encountered users non-cooperative systems. Cooperative approach gives remedy for this issue. With use common receiver, CSS permits user to detect spectrum. Additi...

Cooperative Spectrum Sensing (CSS) has been proposed as a solution to increase accuracy of spectrum sensing in a Cognitive Radio Network (CRN), but with a few exceptions the design and performance evaluation of CSS schemes has focused so far on static networks, neglecting the role and potential impact of terminals mobility, in conjunction with channel spatio-temporal correlation. This work addr...

Cooperative spectrum sensing (CSS) is considered as a powerful approach to improve the utilization of scarce spectrum resources. However, if CSS assumes that all secondary users (SU) are honest, it may offer opportunities for attackers to conduct a spectrum sensing data falsification (SSDF) attack. To suppress such a threat, recent efforts have been made to develop trust mechanisms. Currently, ...

ROGUE SIGNAL THREAT ON TRUST-BASED COOPERATIVE SPECTRUM SENSING IN COGNITIVE RADIO NETWORKS By David Scott Jackson, Ph.D. A dissertation proposal submitted in partial fulfillment of the requirements for the degree of Ph.D. at Virginia Commonwealth University. Virginia Commonwealth University, 2015. Major Director: Meng Yu, Ph.D. Associate Professor, Department of Computer Science Cognitive Radi...