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 described and compared in the literature review on existing ... DESIGN OF SPECTRUM SENSING AND MAC IN COGNITIVE RADIO NETWORKS ZHENG SHOUKANG (M Eng., National University of Singapore) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF...

báo cáo hóa học:" Ten years of research in spectrum sensing and sharing in cognitive radio" doc

... 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 applications of CR systems Keywords: cognitive ... be of different forms, types, and sizes In general, the sensing information combination at the SBS can be categorized as soft combination and hard combination techniques Soft Combination: In soft...

innovative approaches to spectrum selection, sensing, and sharing in cognitive radio networks

... 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 University, India) 2000 M.S (Indian Institute of ... research work in the domain of cognitive radio focuses on designing efﬁcient and accurate spectrum sensing techniques as well as deﬁning algorithms for better spectrum sharing of licensed spectrum...

Báo cáo toán học: " Optimization of cooperative spectrum sensing with sensing user selection in cognitive radio networks" potx

... 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 Communications and Networking 2011 2011:208 ... Networking Conference (WCNC ‘09), 1–5 (2009) W Xia, W Yuan, W Cheng, W Liu, S Wang, J Xu, Optimization of cooperative spectrum sensing in ad-hoc cognitive radio networks in Proceedings of the...

Phy layer and mac layer protocol design and performance analysis for opportunistic spectrum access in cognitive radio networks

... 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 chapter, we consider cooperative spectrum sensing for ... Random Access Model 19 IEEE 802.11 MAC Protocol in WLAN and Multi-hop Networks 20 Cooperative Spectrum Sensing Strategies for Cognitive Radio Mesh Networks 24 3.1 Introduction...

Báo cáo hóa học: " Performance analysis of spectrum sharing mechanisms in cognitive radio networks" pptx

... 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 joint leasing and sensing-based ... in Proceedings of IEEE International Conference on Communications (ICC) 2010, Ottawa, Canada, 1–5 (May 2010) P Zhu, J Li, X Wang, Scheduling model for cognitive radio, in Proceedings of 3rd International...

Báo cáo hóa học: "Location based spectrum sensing evaluation in cognitive radio networks" pptx

... 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 sensing is viewed as ... survey of spectrum sensing algorithms for cognitive radio applications IEEE Commun Surveys Tutorials 11(1), 772–776 (2009) A Ghasemi, ES Sousa, Interference aggregation in spectrum- sensing cognitive...

báo cáo hóa học:" Joint cooperative relay scheme for spectrum-efficient usage and capacity improvement in cognitive radio networks" docx

... 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 ratio for relay link from v0 to vj ... different relay links, the system capacity has increased tremendously comparing to the traditional fixed scheme Moreover, by applying the joint RN selection, channel allocation and DyTSA scheme in MR-MD...

Báo cáo hóa học: "Research Article Securing Collaborative Spectrum Sensing against Untrustworthy Secondary Users in Cognitive Radio Networks" potx

... 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 sensing information honestly However, ... simulation results in Section The problem of dishonest users in distributed spectrum sensing is discussed in [24] The defense scheme in this work requires secondary users to collect sensing reports...

báo cáo hóa học:" Statistical analysis of linear spatial holes estimators in cognitive radio" ppt

... 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 method In [3], a spatial holes ... ϕ, in (16) can be obtained using WLS method, which the details are discussed in [4] In brief, in WLS method the weighted squared error due to inequality of both sides of (16) is minimized Since...

Báo cáo hóa học: " Research Article Modeling the Lion Attack in Cognitive Radio Networks" pptx

... 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 transmission is resumed and degrading TCP ... although the attacker knows the CRN is freezing TCP connections during the handoﬀs, it cannot take advantage of this information in order to improve the attack The fact is that freezing TCP parameters...

Optimal power allocation for fading channels in cognitive radio networks

... 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 channel, we investigate its ergodic, ... OPTIMAL POWER ALLOCATION FOR FADING CHANNELS IN COGNITIVE RADIO NETWORKS KANG XIN (B Eng., Xi’an Jiaotong University, China) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR...

The Anatomy of Design: Uncovering the influences and inspiration in modern graphic design

... 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 recurring motif in graphic design The English ... with others Remove a single part and the design pathology is altered Of course, no matter what the components are, the result is what’s important; but understanding the inner workings of any design...

211
1,283
0

Báo cáo hóa học: "Research Article Design of a Versatile and Low Cost μVolt Level A to D Conversion System for Use in Medical Instrumentation Applicatio" pdf

... 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 data storage, a simple algorithm and graphing ... base collector junction of Q1 is used for reverse voltage blocking and level shifting and could be replaced with a low leakage diode if desired Device U7 is a battery condition indicator and...

Báo cáo y học: " A systematic review of the use of theory in the design of guideline dissemination and implementation strategies and interpretation of the results of rigorous evaluations" pps

... 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 of rigorous evaluations Implementation Science 2010 5:14 Submit your ... not apparent in the majority of studies Discussion This study examined the use of theories within a large sample of rigorous evaluations of guideline dissemination and implementation strategies...

Xem thêm

Từ khóa: ecological psychology and task representativeness implications for the design of perceptual motor training programmes in sport application of models remote sensing and gis in natural resource management application of remote sensing and geographic information systems in wildlife mapping and modelling 1— design of a 12 story cast in place frame shearwall building and its components eino gt t quot sensing and gis in land use and land cover studies for conservation of historic cultural sites application of remote sensing and cis to land use and land cover studies for iscrv aition of historic cultural monuments and urban development in tu liem district the role of teachers schools and communities in quality education advance the case of pursuit of environmental law and policy in natural resource management pursuit of environmental law and policy in natural resource management importance of environmental law and policy in natural resource management the rights of indigenous peoples and maroons in suriname list of families rights and responsibilities in using the social media role of oxidative stress and antioxidants in male infertility the execution of the king and queen in the french revolution history of fabric painting and printing in the philippines Báo cáo thực tập tại nhà thuốc tại Thành phố Hồ Chí Minh năm 2018 Nghiên cứu sự biến đổi một số cytokin ở bệnh nhân xơ cứng bì hệ thống Báo cáo quy trình mua hàng CT CP Công Nghệ NPV chuyên đề điện xoay chiều theo dạng Nghiên cứu tổ chức pha chế, đánh giá chất lượng thuốc tiêm truyền trong điều kiện dã ngoại Một số giải pháp nâng cao chất lượng streaming thích ứng video trên nền giao thức HTTP Nghiên cứu tổ chức chạy tàu hàng cố định theo thời gian trên đường sắt việt nam đề thi thử THPTQG 2019 toán THPT chuyên thái bình lần 2 có lời giải Giáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôit Giáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôit ĐỒ ÁN NGHIÊN CỨU CÔNG NGHỆ KẾT NỐI VÔ TUYẾN CỰ LY XA, CÔNG SUẤT THẤP LPWAN Phát triển mạng lưới kinh doanh nước sạch tại công ty TNHH một thành viên kinh doanh nước sạch quảng ninh Phát hiện xâm nhập dựa trên thuật toán k means Tìm hiểu công cụ đánh giá hệ thống đảm bảo an toàn hệ thống thông tin Giáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vật Giáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vật Giáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vật HIỆU QUẢ CỦA MÔ HÌNH XỬ LÝ BÙN HOẠT TÍNH BẰNG KIỀM TÁI CHẾ NHỰA VÀ QUẢN LÝ CHẤT THẢI Ở HOA KỲ QUẢN LÝ VÀ TÁI CHẾ NHỰA Ở HOA KỲ