range of wireless network adapter

... 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

Ngày tải lên: 17/02/2014, 15:20

Ngày tải lên: 18/02/2014, 04:20

Ngày tải lên: 22/06/2014, 23:20

... of TCP be affected in by the use of wifi connections? 3. What does the use of the mechanism of fast retransmit improve the performances of TCP in wireless environments in? 4. Another series of ... emit. 1 MOB TME - Other aspects of wireless The layer transport - Bluetooth - Wifi Security 1. TCP and wireless environments 1. Remind the operation principle of the algorithm of TCP congestion by explaining what ... have duration of 1, 3 or 5 slots of 625 µs each one. If a packet is sent on the frequency f k , the following will be on frequency f kn , with n duration of the packet in a number of slots (1,...

Ngày tải lên: 17/09/2012, 09:13

... tất cả các thiết bị wireless mới được chứng nhận bởi Wi-Fi Alliance Wireless VLANs Personal Wireless Security  Bảo mật wireless điển hình được chia thành 2 loại:  Personal wireless security: ... kế cho SOHO (small office-home office) hoặc cho người tiêu dùng.  Enterprise wireless security: thiết kế cho các tổ chức doanh nghiệp, chính phủ và đào tạo.  Personal wireless security có ... một thành phần của mạng wireless. WPA Enterprise Security TKIP Encryption Personal Wireless Security Lịch sử của WIFI  Sau thời gian ngắn phát hành 2 chuẩn mạng wireless 802.11b và 802.11a,...

Ngày tải lên: 22/01/2013, 23:02

Ngày tải lên: 07/08/2013, 10:26

Ngày tải lên: 01/09/2013, 11:12

... 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

... 188 netstat -a, 31 network adapter failover, 267–271 network interface cards (NICs), 267 network interfaces checking for failures, 267–270 switching, 271 network redundancy, 267–271 Network Time Protocol ... 161–162 282 ■ INDEX automation of e-mail, with procmail, 193–199 of interactive processes, 187–189 of user input, with except, 107–114 awk utility determining length of string using, 163 determining number of fields ... 82–84 self-linked, 87–89 270 CHAPTER 42 ■ NETWORK ADAPTER FAILOVER Check the Network The core of the script can be found in the following loop. It iterates through each of the IP addresses in the PINGLIST...

Ngày tải lên: 05/10/2013, 08:51

... commerce. In January of 2001, he joined Lucent Worldwide Service as a Network Systems Engineer bringing his knowledge of the desktop platform and a general understanding of a broad range of technologies ... phases of software design at several software companies, including a long tenure at Informix Software, Inc., worked extensively on Sprint ION, and is currently consulting in the network division of ... 14 Using Wireless in the Financial World 15 Using Wireless in the Retail World 15 Using Wireless in Monitoring Applications 16 Applying Wireless Technology to Horizontal Applications 16 Using Wireless...

Ngày tải lên: 16/10/2013, 13:15

... function of SNR for different number of diversity branches L. 41 channel gain at the receiver. If the transmitted symbol is x[0] = ±a, then for a given value of h[0], the error probability of detecting ... gain, there is a law of diminishing marginal return: as L increases, the marginal benefit decreases because of the law of large numbers, eventually converging to the performance of the AWGN channel. ... diversity is achieved by averaging over the fading of the channel over time. Typically, the channel coherence time is of the order of 10’s to 100’s of symbols and therefore the channel is highly...

Ngày tải lên: 20/10/2013, 07:15

... transferred among actors in a network a network • There is a flow of resources within the network There is a flow of resources within the network Points of Difference: Points of Difference: • SN theorist ... Brands • Flow of Communication across subgroups Flow of Communication across subgroups • Diffusion of Innovation Diffusion of Innovation • Likelihood of Activation as a referral source Likelihood of Activation ... Thought and Practice: The Influence of Social Network Theory of Social Network Theory Presented at the Presented at the Networks and Complex Systems Networks and Complex Systems A talk series...

Ngày tải lên: 24/10/2013, 20:15

... secure manner. The Future of Wireless Banking Implementation of Wireless Banking and Financial Systems Rod Ghani Senior Consultant IBM Global Services 03/15/2001 The Future of Wireless Banking Ron ... independent of a network operator or handheld device. The Future of Wireless Banking Ron Ghani 15 Benefits of WebSphere middleware application server: • The financial institute can extend the reach of ... systems is a software program that manages the basic operations of a computer system. a. Windows CE: This is a light version of windows, developed by Microsoft. It is Installed on many of the PDA...

Ngày tải lên: 26/10/2013, 16:15

... training MSE reached by MLP networks of each size. 2.3.1.1 MLP Pattern Storage The pattern storage of a network is the number of randomly chosen input–output pairs the network can be trained to ... involve: (1) completely training tens of MLP networks of each size with different initial weights and (2) selecting the best network of each size from the trained networks. This approach is computationally ... using neural networks. In the first part, in-depth surveys of recent progress of neural network computing paradigms are presented. Part One consists of five chapters: • Chapter 1: Introduction to Neural Networks...

Ngày tải lên: 12/12/2013, 23:15

... be regarded as a special case of an ensemble network. 1.2.5.2 Mixture of Expert (MoE) Network In a mixture of expert (MoE) network [13], each individual neural network module will spe- cialize ... are two basic types of committee machines: (1) ensemble network and (2) mixture of experts. 1.2.5.1 Ensemble Network In an ensemble network [9]–[12], individual modular neural networks will be developed ... graph consists of nodes (in the case of a neural network, neurons, as well as external inputs) and directed arcs (in the case of a neural network, synaptic links). The topology of the graph can...

Ngày tải lên: 12/12/2013, 23:15

... Locator WAE Wireless Application Environment WAP Wireless Application Protocol WBXML WAP Binary XML WCMP Wireless Control Message Protocol Wireless WML Wireless Markup Language WSP Wireless Session ... Transformation WTA Wireless Telephony Application WTAI Wireless Telephony Applications Interface WTLS Wireless Transport Layer Security The Future of Wireless Banking Ron Ghani 15 Benefits of WebSphere ... Strategis Group The Future of Wireless Banking Implementation of Wireless Banking and Financial Systems Rod Ghani Senior Consultant IBM Global Services 03/15/2001 The Future of Wireless Banking Ron...

Ngày tải lên: 21/12/2013, 02:15

... The Wireless Challenge Solutions in this chapter: ■ Wireless Technology Overview ■ Understanding the Promise of Wireless ■ Understanding the Benefits of Wireless ■ Facing the Reality of Wireless ... Limited to Desk Range of Access: Wireless LANs: Up to 100 Meters 3G Wireless: Several Miles Figure 1.7 Roaming Between Access Points Wireless Device Wireless Access Point #2 Wireless Access Point ... of this in a wireless LAN configuration would consist of locating a wireless AP on the inside part of an eastern-facing exterior wall on the second floor of an of ce building.This one wireless AP...

Ngày tải lên: 21/12/2013, 06:16

... 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

Ngày tải lên: 01/01/2014, 16:48