extending range of wireless network

... 213 Index404 14 Economics of Wireless Networks 14.1 Introduction The field of mobile wireless communications is currently one of the fastest growing segments of the telecommunications industry. Wireless devices ... for wireless telecommunication companies. This chapter overviews several economic aspects of wireless networks, including economic benefits of wireless networks, facts that affect the economics of ... depend on the structure of the network. The majority of wireless networks until the 3G era were primarily designed for voice traffic and are thus of a circuit- switched network. Nevertheless, the...

Ngày tải lên: 29/09/2013, 21:20

... effect on the quality of the voice/ Wireless Networks362 Figure 13.9 DCF state machine [18] 13 Simulation of Wireless Network Systems This chapter deals with simulation of wireless network systems. ... (FDMA). The number Simulation of Wireless Network Systems 367 Figure 13.16 Number of video channels versus percentage of video packets within 100 ms Figure 13.17 Quality of service versus MAC protocol ... comparing the results of the Wireless Networks344 allows TBRPF to update the network with a single broadcast for a constant complexity of Q(V). While a string topology shows a limitation of TBRPF and...

Ngày tải lên: 29/09/2013, 21:20

... instead of Designing for Profitability Supplier Customer(s) Vendors (i.e., ADC) • Network Planning • Network Operations • Subscribers Network Planning • Network Operations • Subscribers Network ... maintenance and troubleshooting of a steadily growing network infrastructure. Clearly, the physical layer of the wireless network is getting larger and more complex. With more wireless data services ... increasing the number of cell sites as well as the number of copper and fiber cables in the network. The constant change of reconfigurations and maintenance in the network is conducted largely...

Ngày tải lên: 21/12/2013, 08:17

... enhance- ment in wireless networks. The fourth paper, by S. Guo et al., considers the prob- lem of maximizing the network lifetime for both single and multiple multicast connections in a wireless ad ... the dynamic of network conditions. The au- thors prove the global asymptotic stability of the equilibrium based on Lyapunov theory. Simulation results indicate that REAQM is capable of performing ... produce a group of dis- tributed algorithms. Experimental results show that our dis- tributed algorithms outperform other centralized multicast algorithms significantly in terms of network lifetime...

Ngày tải lên: 22/06/2014, 19:20

... aware of their geographic position and those of their neigboring nodes. The algorithms take advantage of geometric proper- ties of planar networks, constructing a planar subgraph of a given wireless ... Downton Handbook of Wireless Networks and Mobile Computing / Ivan Stojmenovic´ (Editor) HANDBOOK OF WIRELESS NETWORKS AND MOBILE COMPUTING Edited by Ivan Stojmenovic´ University of Ottawa Universidad ... Introduction 1 1.2 Types of Handoffs 1 1.3 Handoff Initiation 2 1.4 Handoff Decision 4 1.5 Handoff Schemes 4 1.6 Summary 24 References 24 2 Location Management in Cellular Networks 27 Jingyuan Zhang 2.1...

Ngày tải lên: 13/08/2014, 12:21

... grade of service. The allocation of frequency channels to cells in a cellular network is a critical element of the design process since it affects the two major metrics of any cellular network: ... channel because of the increased possibility of various kinds of in- terference that appear mainly during the busy hours of the system. Hence the use of tech- niques that are capable of ensuring ... total number of subscribers, the average traffic generated at peak time, and the grade of service of the network. Usually, the network statistics kept by the base stations and the network management...

Ngày tải lên: 13/08/2014, 12:21

Ngày tải lên: 13/08/2014, 12:21

Ngày tải lên: 13/08/2014, 12:21

Ngày tải lên: 13/08/2014, 12:21

Ngày tải lên: 13/08/2014, 12:21

Ngày tải lên: 13/08/2014, 12:21

Ngày tải lên: 13/08/2014, 12:21

Ngày tải lên: 24/08/2014, 17:21

... Introduction 1.1 The Need for Third-Generation Wireless Technologies The first generation of wireless networks was primarily concerned with the provision of voice services, allowing users to transition ... One source of co- channel interference, de-correlated in time with 0 frequency offset. One source of adjacent channel interference, de-correlated in time with 200 kHz of frequency offset. One ... One source of co-channel interference, de-correlated in time with 0 frequency offset. One source of adjacent channel interference, de-correlated in time with 200 kHz of frequency offset. One...

Ngày tải lên: 26/04/2013, 11:15

... xxiii About the Authors xxvii Part I Overview of WiMAX 1 Chapter 1 Introduction to Broadband Wireless 3 1.1 Evolution of Broadband Wireless 5 1.1.1 Narrowband Wireless Local-Loop Systems 5 1.1.2 First-Generation ... Professor Robert Heath and Mr. Runhua Chen from the University of Texas at Austin. Both Professor Heath and Mr. Chen possess an incredi- ble degree of intuition and understanding in the area of ... and tech- nical challenges to building broadband wireless networks. Chapter 2 provides an overview of WiMAX and serves as a summary of the rest of the book. This chapter is written as a standalone tutorial...

Ngày tải lên: 27/04/2013, 08:58

Ngày tải lên: 18/10/2013, 12:15

... understanding of networking concepts, and then jump right in! The wireless LAN industry is growing at a phenomenal rate. Wireless networking is replacing and adding to the mobility of conventional network ... Spread Spectrum Technology 47 Uses of Spread Spectrum 48 Wireless Local Area Networks 48 Wireless Personal Area Networks 49 Wireless Metropolitan Area Networks 49 FCC Specifications 49 Frequency ... part of the CWNP Training and Certification program, the CWNA certification picks up where other popular networking certification programs leave off: wireless LANs. Your study of wireless networking...

Ngày tải lên: 17/02/2014, 15:20

Ngày tải lên: 18/02/2014, 04:20