lans in integrated radio networks

... defined in (36) With the aid of [49, Eq (358.4)], the last integral in (39) is solved in closed-form as R1 eÀHB y C k HB EiðÀCk HB Þ Inserting this result into (39), one can see that (39) is in ... PCC o in (50) is very compact to determine the diversity order and the coding gain of the opportunistic relay selection in cognitive radio networks with PU’s interference and direct channel Indeed, ... B.E degree in Electrical Engineering from Ho Chi Minh City University of Technology, Vietnam in 2001, and the Ph.D degree in Telecommunication Engineering from Telecom ParisTech, France in 2006

Ngày tải lên: 16/12/2017, 11:30

... Determining Fault Direction in Radial Distribution Networks Integrated with Distributed Generations Ngo Minh Khoa*, Tran Xuan Khoa Faculty of Engineering and Technology, Quy Nhon University, Binh ... above-mentioned works, an innovative method is developed in this study for determining the fault direction in a radial distribution network integrated with DGs In summary, the main contributions of ... using the linear programming problem approach to optimize the relay setting in distribution networks The power flow in the distribution networks with the penetration of DGs is changed depending

Ngày tải lên: 05/12/2023, 13:13

... announce a second incoming call Call forwarding—busy line: forwarding incoming calls to another number when the dialed telephone is busy Call forwarding—don’t answer: forwarding incoming calls to ... not answered Call forwarding—universal: unconditional forwarding of incoming calls to another number Call forwarding—call-waiting calls: forwarding incoming call-waiting calls to another number ... Call tracing: activation of the incoming call tracing Centrex features: the PSTN-hosted voice call processing feature used by business cus- tomers (discussed in Chapter 6) Distinctive ringing: delivering

Ngày tải lên: 30/09/2013, 07:20

... Trang 1Understanding Delay in Packet Voice Networks Introduction When designing networks that transport voice over packet, frame, or cell infrastructures, it is important to ... backhauling, microwave links, and other factors found in carrier networks create many exceptions The other significant component of delay is from queuing within the wide-area network In a private ... only minimum buffering delay) In practice, over a number of network switch hops, it may not be necessary to assume the worst case The calculations in the following examples increase the initial

Ngày tải lên: 11/12/2013, 14:16

... control messaging, in single (common) and multiple control messaging According to the frequency-changing nature of the channels, in fixed and hoping control messaging Finally, according to the lever ... Restricted tuning capabilities can be incorporated in this circuit introducing a varactor diode in the feedback line in order to control its electrical length changing the capacitive loading (Yuen ... (indicated as a resistor), having the same impedance of the ATL is introduced with the purpose of absorbing the forward propagating waves in the gate line and the backward propagating waves in

Ngày tải lên: 07/03/2014, 21:20

... of the protein involved in interaction with Cdk2 and cyclin A: 1, domain interacting with cyclin A; 2, a linker helix involved in binding both cyclin A and Cdk2; 3, domain interacting with Cdk2 ... protein–protein interaction networks across species [20–23], and interesting evolutionary inferences are being made, such as the observation that proteins having a more central position in the networks ... alpha [193]; BRCA1, cyclin A [194] profilin [196]; deoxyribonuclease I, vitamin D binding protein, thymosin beta-4, cofilin [197] neurogranin, calcineurin, AC1 [198]; calponin [199]; caldesmon [200]

Ngày tải lên: 07/03/2014, 21:20

... THERELIABLETRANSPORTPROBLEM INWSN In the preceding discussions, we introduced the notion of event-to-sink reliability in WSN and pointed out the inapplica-bility of existing transport solutions Before proceeding to ... of samples received in a decision interval increases with increasing conveying more information to the sink from the event area Note that after a certain reporting fre-quency rate , cannot be further ... sensor network topology with event and sink The sink is only interested in collective information of sensor nodes within the event radius and not in their individual data. To accomplish this, a

Ngày tải lên: 16/03/2014, 19:20

... and maintained with routing. As discussed in [5], there are two approaches in networking: flat or "zero-tier" infrastructure hierarchical, multiple- or N-tier infrastructure. In flat networks ... key 10 [...]... [in ASCII format] [9] Kärpijoki, V Signalling and Routing Security in Mobile Ad Hoc Networks Proceedings of the Helsinki University of Technology, Seminar on Internetworking - ... communication to maintain the connectivity, in which case the networks are called as mobile ad hoc networks (MANET). Mobility is not, however, a requirement for nodes in ad hoc networks, in ad hoc networks

Ngày tải lên: 22/03/2014, 15:21

... the interstate highway I-26 (Columbia, South Carolina) with two cars running in par-allel at speeds exceeding 110 km/h 4.2 Eavesdropping Range We measured the eavesdropping range in both indoor ... TPMS in particular, is essential to ensur-ing that the new wave of intelligent automotive applica-tions will be safely deployed within our cars 1.3 Outline We begin in Section 2 by presenting ... and other forthcoming in-car wireless sensor networks 1 Introduction The quest for increased safety and efficiency of au-tomotive transportation system is leading car makers to integrate wireless

Ngày tải lên: 23/03/2014, 10:20

... to single forwarding boxes in a net-work, as well as individual switch chips within a large chassis-based router While the energy savings from powering off an individual switch might seem insignificant, ... optimization goal is to minimize the total net-work power, while satisfying all constraints Split-ting a single flow across multiple links in the topol-ogy might reduce power by improving link utilization ... maintaining the ability to handle traffic surges Our fast heuristic for computing network subsets enables ElasticTree to scale to data cen-ters containing thousands of nodes We finish by show-ing

Ngày tải lên: 23/03/2014, 13:20

... 1Metabolic control in integrated biochemical systemsAlberto de la Fuente1, Jacky L Snoep2, Hans V Westerhoff3,4and Pedro Mendes1 1 Virginia Bioinformatics Institute, Virginia Polytechnic Institute and ... degradation In this setting, it has been shown [8] that transcription and translation participate in Correspondence to P Mendes, Virginia Bioinformatics Institute, Virginia Polytechnic Institute ... enzymeactivity (ei) and another representing the kinetic mechanism (ui) [23]: The kinetic part can be perturbed independently of the activity using non-tight-binding inhibitors The concentra-tion of

Ngày tải lên: 23/03/2014, 21:21

... lyingalong the radio sources in nearby radiogalaxies That Þnding suggests that theradio jets are interacting vigorously withthe gas in these systems One radio-emitting galaxy, the peculiar Minkow-skiÕs ... on mining will not be included in a mining reform bill ing out of the Senate,” says D Reid Wil-son, political director of the Sierra Club.And like-minded leaders worry that Clin-ton is softening ... in-of the administration’s political mises Chief among them has been Clin-ton’s capitulation on increasing fees formining and grazing on federal land andphasing out subsidies for logging in fed-eral

Ngày tải lên: 12/05/2014, 14:49

... or PU in service left), the waiting signaling is canceled for PUs in the primary system via the spectrum broker In the situation without waiting signaling, the proposed mechanism works in the ... probabilities in the NP mechanism is presented in Appendix B The main purpose of deriving the steady-state probabilities is to evaluate the performance metrics 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...

Ngày tải lên: 20/06/2014, 22:20

... J.-M Park, “Ensuring trustworthy spectrum sensing in cognitive radio networks, ” in Proceedings of the 1st IEEE Workshop on Networking Technologies for Software Defined Radio Networks (SDR ’06), ... probabilities Pr(T = ti ) as in (13), the expected average time of TCP source inactivity T after receiving an attack can be obtained as in ∞ T= ti · Pr(T = ti ) 3.7 Obtaining the TCP Inactivity Percentage ... freezing and nonfreezing TCP transmission Figures and clearly show that TCP throughput is higher when freezing TCP parameters than without freezing, since the TCP source remains inactive just during...

Ngày tải lên: 21/06/2014, 11:20

... 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 ... Communications Ministry of Education, Information and Telecommunication Engineering of Beijing University of Posts and Telecommunications (BUPT), Haidian Dist Xitucheng Rd Beijing 100876, P.R China ∗ Corresponding ... designed to increase the spectrum usage efficiency and system capacity by dynamic tuning DyTSA ratio to adapt to the changing radio environment in multiple RNs serving multiple destinations scenario...

Ngày tải lên: 21/06/2014, 17:20

... to hard-decision reporting case Finally, current security issues in cognitive radio networks, including attacks and corresponding defense schemes, are concluded in [25] In this paper, we develop ... “Security in cognitive radio networks: threats and mitigation,” in Proceedings of the 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom ’08), Singapore, ... “Collaborative spectrum sensing for opportunistic access in fading environments,” in Proceedings of the 1st IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks (DySPAN ’05),...

Ngày tải lên: 21/06/2014, 19:20

... QoS in Integrated 3G Networks For a listing of recent titles in the Artech House Mobile Communications Series, turn to the back of this book QoS in Integrated 3G Networks Robert ... service in integrated 3G networks II Title III Series TK5103.483 L56 2002 384.5—dc21 2002021595 British Library Cataloguing in Publication Data Lloyd-Evans, Robert QoS in integrated 3G networks ... technology is introduced but the physical radio interface is retained In the second upgrade to WCDMA, the radio interface is totally changed In addition, cdmaOne offers advantages over GPRS in the short...

Ngày tải lên: 04/07/2014, 07:39

... 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 ... occupancy in a single sub-band at any time instant can be determined by SUs in a cooperative manner [20] - [22] as opposed to being determined individually by each user [23] - [26] However, the instantaneous ... and beyond, integration and intercommunication of existing and future networks is not a far-sighted envision In recent years, different types of networks, like self-organizing ah hoc networks, ...

Ngày tải lên: 30/10/2014, 20:09

... is independent and identically distributed (i.i.d), and with zero mean and variance of N0 2.1.1 Binary Hypothesis Testing Spectrum sensing is a problem of binary hypothesis testing: determining ... genuine concern for me I want to thank the Department of Electrical and Computer Engineering, National University of Singapore I also thank the Institute for Infocomm Research for providing me ... prior information on the high probability that primary user is idle in cognitive radio networks, is proposed for spectrum sensing, assuming that primary signals are digitally PSK (Phase Shift Keying)...

Ngày tải lên: 10/09/2015, 08:28

... from interference canceling in the adaptive signal processing Besides, energy detection is not suitable in a multi-hop network scenario since transmissions from the neighboring SUs would interfere ... original inactive/active state after the spectrum sensing phase However, since the probability of this case is very small, thus we neglect it in the remaining part After the spectrum sensing, ... including cooperative coding, collaborative coding, and dirty paper coding, etc In addition, recent studies on overlay model have been summarized in [28] 1.3 Motivations and Challenges In traditional...

Ngày tải lên: 10/09/2015, 15:53