Design of spectrum sensing and mac in cognitive radio networks

... the design of cognitive radio MAC is no longer an independent task for MAC layer, the researchers have been learning and investigating the approach on joint design of spectrum sensing and MAC ... spectrum sensing and cognitive radio MAC protocols The fundamentals of various spectrum sensing methods and cognitive radio MAC protocols are descr...

Ngày tải lên: 10/09/2015, 08:28

... Ten years of research in spectrum sensing and sharing in cognitive radio Lu Lu∗ , Xiangwei Zhou, Uzoma Onunkwo and Geoffrey Ye Li School of Electrical and Computer Engineering, Georgia Institute ... implementation of CR In this article, we provide an overview of recent research achievements of including spectrum sensing, sharing techniques and the...

Ngày tải lên: 21/06/2014, 17:20

... Abstract Innovative Approaches to Spectrum Selection, Sensing, and Sharing in Cognitive Radio Networks In a cognitive radio network (CRN), bands of a spectrum are shared by licensed (primary) and ... Innovative Approaches to Spectrum Selection, Sensing, and Sharing in Cognitive Radio Networks by Chittabrata Ghosh B.Tech (Kalyani Univer...

Ngày tải lên: 30/10/2014, 20:09

... Cooperative spectrum sensing in cognitive radio, part I: two user networks IEEE Trans Wirel Commun 6(6), 2204–2213 (2007) G Ganesan, Y (G) Li, Cooperative spectrum sensing in cognitive radio, part ... Yu et al.: Optimization of cooperative spectrum sensing with sensing user selection in cognitive radio networks EURASIP Journal on Wireless Commun...

Ngày tải lên: 20/06/2014, 21:20

... both physical (PHY) layer and medium access control (MAC) layer In this thesis, we focus on cognitive radio networks (CRN) and aim to improve the spectrum sensing performance at the PHY layer and ... Sensing Strategies for Cognitive Radio Mesh Networks Chapter Cooperative Spectrum Sensing Strategies for Cognitive Radio Mesh Networks In this chap...

Ngày tải lên: 10/09/2015, 15:53

... delay and mean waiting time are also in our considerations For evaluating the spectrum- sharing mechanisms in the CRN, metrics that we consider include force-termination probability of SU PFT-su, mean ... channels by sensing Different from traditional sensing-based CRNs, QoS guarantee for SUs has to be considered in spectrum- sharing mechanism design In Conclusion In the j...

Ngày tải lên: 20/06/2014, 22:20

... component of the emerging cognitive radio networks In this article, we Page of study the spectrum sensing problem jointly taking the fading and the location of SUs into account We obtain the overall ... Consequently, the spectrum sensing with jointly taking the fading and location of SUs into account is more suitable for the small scale network Concluding remarks Spectrum sen...

Ngày tải lên: 21/06/2014, 00:20

... Joint cooperative relay scheme for spectrum-efficient usage and capacity improvement in cognitive radio networks Qixun Zhang∗ , Zhiyong Feng and Ping Zhang Wireless Technology Innovation Institute ... which is divided into two time slots t0i and tij for receiving and transmitting on two relay links in Figure 2, where rji = αji (0 < αji < 1) denotes the DyTSA...

Ngày tải lên: 21/06/2014, 17:20

... information In this section, we describe the scenario of collaborative spectrum sensing and present two attack models 2.1 Collaborative Spectrum Sensing In cognitive radio networks, secondary users ... is insider attack that targets collaborative spectrum sensing In current collaborative sensing schemes, secondary users are often assumed to report their...

Ngày tải lên: 21/06/2014, 19:20

... Statistical analysis of linear spatial holes estimators in cognitive radio Mohammad Kazemi∗ , Mehrdad Ardebilipour and Behrad Mahboobi Faculty of Electrical and Computer Engineering, Khaje ... RSS-WLS In WLS as a generalization of LS method, the matrix of coefficients is multiplied by a weighting matrix to let the system of linear equations be solved using LS metho...

Ngày tải lên: 21/06/2014, 17:20

... and validates the analytical model presented in the previous section Finally, in Section 5, we present the conclusions of the work The Lion Attack 2.1 Target and Motivation The Lion attack is a ... Mitigating the Lion Attack As explained in Section 2.2, a Lion attack forces the CRN to perform a frequency handoff, incurring a substantial delay until transmi...

Ngày tải lên: 21/06/2014, 11:20

... capacities for a single-SU fading CR channel Chapter studies outage capacity regions for fading C-MAC In Chapter 4, the optimal power allocation for fading CR networks with PU outage constraint is ... for various fading CR networks, including single CR point-to-point channel, cognitive MAC, and cognitive OFDM systems For a single SU point-to-point fading cha...

Ngày tải lên: 11/09/2015, 10:15

... uncovering the influences and inspirations in modern graphic design steven heller and mirko ilic´ packaging and unpackaging design Graphic design is a composite of many influences and inspirations ... Valley Canning Company ANATOMY OF DESIGN Printed in USA Art Director/Designer: Emek No two fingerprints are alike, yet the fingerprint is a venerable re...

Ngày tải lên: 13/02/2014, 17:41

... task, it was necessary to design and develop a novel technology that could directly interface a range of sensor elements and to provide a reliable and low cost method of capturing and storing the ... order to provide automatic interpretation of the output pulse train and to offer a direct readout in the numerical units desired In the case of PC-based...

Ngày tải lên: 22/06/2014, 01:20

... whether included studies had used a theory to inform the design of an intervention and/ or the interpretation of the results A study was considered to have used a theory if the authors stated that ... of the use of theory in the design of guideline dissemination and implementation strategies and interpretation of the results...

Ngày tải lên: 11/08/2014, 05:21