communications and computer networks

... thức, entropy H = 4.07 bit/ký hiệu Lưu ý: Hãy xem xét câu sau: "I not knw wheter this is undrstandble." Mặc dù thực tế số chữ tích câu bạn làm câu văn Nói cách khác, có nhiều khả dự phòng văn...

Ngày tải lên: 18/09/2012, 10:13

Ngày tải lên: 19/03/2014, 00:20

... and Capacity Design in Communication and Computer Networks The Morgan Kaufmann Series in Networking Series Editor, David Clark, M.I.T Routing, Flow, and Capacity Design in Communication and Computer ... Karen Medhi and our children—Krzysztof and Ewa Pioro, and Neiloy ´ ´ and Robby Medhi—for their support, love, and understanding during the preparation of this book Michał Paweł Pioro and Deepankar ... 1.2 Communication and Computer Networks, and Network Providers 1.3 Notion of Traffic and Traffic Demand ...

Ngày tải lên: 06/07/2014, 15:27

Ngày tải lên: 13/09/2012, 10:21

... Routing algorithms and metrics 2008/7/19 IGP and EGP Link state and distance vector Routing protocols 10.3 The Mechanics of Subnetting Classes of network IP addresses Introduction to and reason for ... Applying the subnet mask Subnetting Class A and B networks Calculating the resident subnetwork through ANDing 10.1 Routed Protocol 2008/7/19 Routable and routed protocols A routed protocol allows ... reachable networks, the hop count or distance to those networks, and the interface the data must be sent out to get to the destination network 2008/7/19 27 Routing versus switching (cont.) Switched networks...

Ngày tải lên: 22/10/2013, 16:46

... wireless communications and networks have become so ubiquitous in our society and indispensable our daily lives The demand for new services to support high speed wideband Internet access and advanced ... technologies in wireless communications and networks Progress in wireless communications and networks continues as this book is being written Although there have been many journal and conference publications ... titled “Wireless Communications and Networks - Recent Advances”, focuses on the current research topics from wide range of wireless communications and networks and provides “on-going” research...

Ngày tải lên: 31/03/2014, 22:20

... the pdf of and that of are the same Figure 2-7 shows two pairs of time points and the random variables defined for those four time points: The distances between and and between and are and respectively ... Random experiments, outcomes and events A random experiment is an experiment that produces random outcomes For example, throwing a die is a random experiment in which each trial produces a random ... example, a random variable may be denoted by x and a fixed value that x can take, by x A random variable (RV) x is a function of a random outcome of a random experiment that maps a random outcome...

Ngày tải lên: 01/06/2014, 12:38

... Fundamentals of Data Communications: Parts One (overview) and Two (data communications) and Chapters 10 and 11 (circuit switching, packet switching, and ATM) • Communications Networks: If the student ... products and that is the focus of Parts Five and Six of this book CHAPTER DATA COMMUNICATIONS, DATA NETWORKS, AND THE INTERNET 1.1 1.2 A Communications Model 1.3 Data Communications 1.4 Networks ... area networks (LANs) and wide area networks (WANs) The 1970s and 1980s saw a merger of the fields of computer science and data communications that profoundly changed the technology, products, and...

Ngày tải lên: 05/06/2014, 07:58

... areas of communications and networks The introductions, derivations, discussions and references in this book significantly improve the readers’ understanding of communications and networks and encourage ... Wireless Communications and Networks, Edited by Jia-Chin Lin p cm ISBN 978-953-307-274-6 Contents Preface IX Part Physcial and MAC Layers Chapter A Study of Cramér-Rao-Like Bounds and Their ... efficient estimator and must be MVUE Figures and are illustrations of the relationship between a MVU estimator and the CRLB ˆ Fig θ MVU and efficient A Study of Cramér-Rao-Like Bounds and Their Applications...

Ngày tải lên: 19/06/2014, 19:20

... Wireless Communications and Networks random variable, A0 = g0 ( ε ) and A1 = g1 ( ε ) Therefore, the two derived random variables A0 and A1 are first set to be constant for the worst cases, and thus, ... signal power and σ n = E ⎡ nk ⎤ is the average noise power ⎣ ⎦ ⎣ ⎦ 30 Recent Advances in Wireless Communications and Networks Because the product ∏ k f ( rk ) in (9) is independent of θ and ε , it ... categories: continuous and discontinuous as shown in Fig 10 These two categories can be subdivided into three types: intraband contiguous, intraband discontinuous and interband A diagram describes...

Ngày tải lên: 19/06/2014, 19:20

... Wireless Communications and Networks " (36) Figure shows the amplitude comparison of | |,|΄ | and | " | for N=64 and 0.3 For the majority of l-k values, | ΄ | is much smaller than | |, and the ... gain and diversity gain, while its complexity grows exponentially with the bandwidth efficiency and achievable diversity order Therefore, it 64 Recent Advances in Wireless Communications and Networks ... of the main lobe and/ or reduce the amplitude of sidelobes, as the sidelobe contains the ICI power 52 Recent Advances in Wireless Communications and Networks REC, RC, BTRC, SP, and ISP pulse shapes...

Ngày tải lên: 19/06/2014, 19:20

... Recent Advances in Wireless Communications and Networks 4.1 Linear array and signal model Fig 16 depicts a linear array with L omni-directional and equi-spaced antennas, and the antenna spacing is ... Proceedings of IEEE Communications Conference, pp.1630-1634, ISSN: 0-7803-0950-2, Geneva, Switzerland, May 23-26, 1993 94 Recent Advances in Wireless Communications and Networks Wolniansky, ... paths of the channel and φl and τl denote the power and delay of the l-th path It is assumed that the power delay profile is the same for P− all pairs of Tx and Rx antennas and that it has been...

Ngày tải lên: 19/06/2014, 19:20

... Recent Advances in Wireless Communications and Networks Will-be-set-by-IN-TECH Meyer, C (2000) Matrix analysis and applied linear algebra, Society for Industrial and Applied Mathematics (SIAM) ... xk and on the stage (k) 136 Recent Advances in Wireless Communications and Networks Will-be-set-by-IN-TECH 20 Fig 20 Scheme of a DP problem showing the system states (xk ), controls (ck ) and ... detection strategies exist that decouple the Alamouti decoding and GO-CDM 112 18 Recent Advances in Wireless Communications and Networks Will-be-set-by-IN-TECH Spatial Division Multiplex −2 10...

Ngày tải lên: 19/06/2014, 19:20

... Advances in Wireless Communications and Networks Will-be-set-by-IN-TECH In absence of the signal, samples xkl are drawn from an i.i.d complex Gaussian random variable with zero mean and variance σn ... shift, and θ ∈ [−π, π ) is the mean direction of AoA seen by the user; I0 (·) stands for the zeroth-order modified Bessel function 148 10 Recent Advances in Wireless Communications and Networks ... separated procedures: averaging in time and accounting for diversity and suppressing noise in spatial 150 12 Recent Advances in Wireless Communications and Networks Will-be-set-by-IN-TECH diversity...

Ngày tải lên: 19/06/2014, 19:20

... vertical handoff and QoS provisioning schemes in integrated WLAN and 3G cellular networks 192 Recent Advances in Wireless Communications and Networks 2.2 Vertical handoff In integrated networks, ... Integrated Wireless LAN and 3G Cellular Networks 193 integrated WLAN and 3G cellular networks, seamless vertical handoffs and call admission control must be considered as dependent and joint mechanisms ... two types of handoff: intra-technology handoff and intertechnology handoff (Lampropoulos et al., 2005; Shafiee et al., 2011) The intra-technology handoff is traditional Horizontal Handoff (HHO)...

Ngày tải lên: 19/06/2014, 19:20

... 802 and non 802 networks The standard provides quick handovers of data sessions across heterogeneous networks with small switching delays and minimized latency The handover in heterogeneous networks ... in Wireless Communications and Networks prabability and handoff dropping probability To reduce the complexity, we focus on voice services in the integrated WLAN and 3G UMTS cellular networks, with ... MN-initiated and MN-cancelled handover Information Server 228 Recent Advances in Wireless Communications and Networks 3.1 QoS-based vertical handover As defined in IEEE 802.21 standard, QoS-based...

Ngày tải lên: 19/06/2014, 19:20

... 3G and 4G Wireless Networks, Proceedings of 19th International Conference on Computer Communications and Networks (ICCCN), pp.1-8, August 2010 Balasubramaniam S & Indulska J (2004) Vertical handover ... over N1 and N2 radio links are assumed as lognormal distributions, respectively rN ( P ) and rN ( P ) , with mean signal levels μ N and μ N , 2 and the shadowing standard deviations σ N and σ N ... useful for handovers between EGPRS and Wireless Local Area Networks (WLAN) Honda et al proposed a new handover mechanism based on SCTP and a new data retransmission feature for smooth handover In...

Ngày tải lên: 19/06/2014, 19:20

... Standard for Local and metropolitan area networks Part 16: Air interface for fixed broadband wireless access systems IEEE Std 802.21-2008 (2008) IEEE Standard for Local and metropolitan area networks ... 16-antenna and 11/ab-antenna • The number of terminals is 100, and each terminal is equipped with 16-interface and 11a/b-interface 288 Recent Advances in Wireless Communications and Networks Wireless ... one, 262 Recent Advances in Wireless Communications and Networks but it consumes less bandwidth Table includes the average times for a multiple-file transmission and the corresponding confidence...

Ngày tải lên: 19/06/2014, 19:20

... predefined path Area of Use: Medical and health, Industrial sector, Home networks, etc 304 • • Recent Advances in Wireless Communications and Networks Random Deployment – Sensor nodes are scattered ... or a handheld device, being easier to stop and restart the network as needed 306 Recent Advances in Wireless Communications and Networks Resource constraint nature of wireless sensor networks ... Interface for Fixed Broadband Wireless Access Systems, 2004 IIEEE Std 802.16e-2005 (2005) Local and Metropolitan Area Networks, Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access...

Ngày tải lên: 19/06/2014, 19:20