Xem 1-20 trên 60 kết quả Wireless industry
  • The expansion and popularity of the Internet, along with the addition of wireless data functionality to wireless networks, has also contributed greatly to the growth of the wireless industry. In fact, the anticipated consumer demand for high bandwidth wireless data is commonly seen as the driving force behind current network upgrades and expansions. The number and types of companies aggressively investing in wireless technologies illustrate the importance of wireless data.

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  • This book provides a comprehensive introduction to the underlying theory, design techniques and analytical tools of wireless communications, focusing primarily on the core principles of wireless system design. The book begins with an overview of wireless systems and standards. The characteristics of the wireless channel are then described, including their fundamental capacity limits. Various modulation, coding, and signal processing schemes are then discussed in detail, including state-of-the-art adaptive modulation, multicarrier, spread spectrum, and multiple antenna techniques....

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  • Wireless communications is one of the most active areas of research over the past and the current decades. In fact, the demand for wireless services has been changing from the regular voice telephony services to mixed voice, data, and multimedia services over the wireless media. Since the mid-1990s, the wireless industry has been advancing at an incredible speed. For example, the 2G cellular systems (such as GSM, D-AMPS, and IS-95) have significantly improved the spectral efficiency and network capacity to support wireless telephony services....

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  • Wireless communications is, by any measure, the fastest growing segment of the communications industry. As such, it has captured the attention of the media and the imagination of the public. Cellular systems have experienced exponential growth over the last decade and there are currently around two billion users worldwide. Indeed, cellular phones have become a critical business tool and part of everyday life in most developed countries, and are rapidly supplanting antiquated wireline systems in many developing countries....

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  • Mobile and wireless communications applications have clear impact on improving the humanity wellbeing. From cell phones to wireless internet to home and office devices, most of the applications are converted from wired into wireless communication. Smart and advanced wireless communication environments represent the future technology and evolutionary development step in home, hospitals, industrial, and vehicular and transportation systems.

    pdf0p 123859674 30-06-2012 61 13   Download

  • Welcome to Wireless Home Networking For Dummies. Wireless networking for personal computers is not really a new idea; it’s been around for at least five years. The emergence of an industry standard, however, has caused the use of wireless networking technology to explode. One of the most appealing things about the current crop of wireless networking equipment is the ease with which you can set up a home network, but its reasonable price might be the most attractive aspect of all. Setting up a wireless home network can be both inexpensive and easy.

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  • Practical Digital Wireless Signals Do you need to know what signal type to select for a wireless application? Quickly develop a useful expertise in digital modulation with this practical guide, based on the author’s experience of over 30 years in industrial design. You will understand the physical meaning behind the mathematics of wireless signals and learn the intricacies and tradeoffs in signal selection and design.

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  • In the telephone networks, the circuit between the subscriber's equipment (e.g. telephone set) and the local exchange in the central office is called the `subscriber loop' or `local loop'. Traditionally, the copper wire has been used as the medium for local loop to provide voice and voice-band data services. Since 1980's, the demand for communications services has increased explosively. There has been a great need for the basic telephone service, i.e. the plain old telephone service (POTS) in developing countries.

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  • The book addresses practical engineering issues that antenna professionals have to deal with. It explains the immediate demands for existing systems; discusses the antenna technology for the latest and emerging applications, and gives comprehensive coverage of hot topics in the wireless industry. Issues including design considerations, engineering design, measurement setup and methodology, and practical applications are all covered in depth.

    pdf307p ken333 06-07-2012 37 6   Download

  • Lời giới thiệu: Công nghệ Java cho công nghiệp di động (Java Technology Wireless Industry - JTWI) ngày càng phát triển và thu hút sự quan tâm của nhiều người. Nhằm đáp ứng nhu cầu này, TinCNTT mở.Khái quát các lớp J2ME Mục tiêu của J2ME là cho phép người lập trình viết các ứng dụng độc lập với thiết bị di động, không cần quan tâm đến phần cứng thật sự. Để đạt được...

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  • Công nghệ Java cho công nghiệp di động (Java Technology Wireless Industry - JTWI) ngày càng phát triển và thu hút sự quan tâm của nhiều người. Nhằm đáp ứng nhu cầu này, TinCNTT mở chuyên mục J2ME Tutorial cố gắng đề cập đầy đủ nhiều khía cạnh của công nghệ Java cho di động. Để bắt đầu loạt bài, chúng ta sẽ cùng khảo sát các lớp và khái niệm quan trọng của J2ME.

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  • UNLICENSED FREQUENCIES –Băng tần ISM và UNII: •Băng tần công nghiệp, khoa học và y học ISM ( Industrial, Scientific, and Medical). •Băng tần ISM bao gồm 900 Mhz, 2.4 Ghz, 5.8 Ghz và có độ rộng khác nhau từ 26 Mhz đến 150 Mhz. •3 băng tần UNII (Unlicenced National Information Infrastructure), mỗi băng tần nằm trong vùng 5 Ghz và rộng 100 Mhz •Thuận lợi và khó khăn của băng tần không cấp phép (miễn phí) –Miễn phí nhưng không đủ...

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  • Công nghệ Java cho công nghiệp di động (Java Technology Wireless Industry - JTWI) ngày càng phát triển và thu hút sự quan tâm của nhiều người. Nhằm đáp ứng nhu cầu này, TinCNTT mở chuyên mục J2ME Tutorial cố gắng đề cập đầy đủ nhiều khía cạnh của công nghệ Java cho di động. Để bắt đầu loạt bài, chúng ta sẽ cùng khảo sát các lớp và khái niệm quan trọng của J2ME.

    doc30p dark1991 13-02-2011 188 92   Download

  •  Nội dung giáo trình được bố cục bao gồm 9 bài với nội dung như sau: Bài 1 Giới thiệu tổng quan, Bài 2 Nhiễu và giải pháp xử lý, Bài 3 Chuẩn truyền thông RS232, Bài 4 Chuẩn truyền thông RS485, Bài 5 Cáp quang, Bài 6 Mạng Modbus, Bài 7 Mạng AS-I Actuator Sensor Interface, Bài 8 Mạng Industrial Enthernet, Bài 9 Mạng truyền thông Radio và Wireless.

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  • Lời giới thiệu: Công nghệ Java cho công nghiệp di động (Java Technology Wireless Industry - JTWI) ngày càng phát triển và thu hút sự quan tâm của nhiều người. Nhằm đáp ứng nhu cầu này, TinCNTT mở chuyên mục J2ME Tutorial cố gắng đề cập đầy

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  • This module introduces the Wireless LAN (WLAN) industry. It is designed to give the student a brief overview of the history of WLAN products and the evolution of those products, as well as to help the learner understand the development history of Cisco Aironet® wireless product set. It includes the following topics: Agenda Cisco Wireless Wireless Data Networks WLAN Evolution Cisco Wireless Advantages

    pdf590p vutrung 04-09-2009 129 57   Download

  • Lời giới thiệu: Công nghệ Java cho công nghiệp di động (Java Technology Wireless Industry - JTWI) ngày càng phát triển và thu hút sự quan tâm của nhiều người. Nhằm đáp ứng nhu cầu này, TinCNTT mở chuyên mục J2ME Tutorial cố gắng đề cập đầy đủ nhiều khía cạnh của công nghệ Java cho di động. Để bắt đầu loạt bài, chúng ta sẽ cùng khảo sát các lớp và khái niệm quan trọng của J2ME.

    pdf5p yukogaru4 19-09-2010 99 51   Download

  • This book describes how to program mobile telephones, pagers, PDAs, and other small devices using Java technology. It is about the Mobile Information Device Profile (MIDP), which is part of the Java 2 Platform, Micro Edition (J2ME). It is concise and complete, describing all of MIDP as well as moving into several exciting advanced concepts such as 3D graphics and cryptography. This third edition covers MIDP 2.0, and has been updated to track the Java Technology for the Wireless Industry (JTWI 1.0) de facto standard.

    pdf473p tranhieungan37 28-03-2011 71 18   Download

  • "Hacker's Challenge" will consist of 20-25 hacking scenarios followed by the solution for each. The challenges/chapters are organized by increasing levels of complexity, and covers many hot topics, including Web content, VPNs, Denial of Service, wireless issues, e-commerce, email attacks and more. It includes input from top names in the industry - in addition to Mike Schiffman, consultants from the top security firms, such as Guardent, Foundstone, @Stake, SecurityFocus.com, In-Q-Tel, Arbor Networks, LoudCloud and more contribute their expertise.

    pdf384p kxjvcm 04-09-2013 57 17   Download

  • Wireless Sensor Networking is one of the most important new technologies of the century and has been identified to see significant grow in the next decades. Wireless sensor networks are power-efficient, small-size and communicate wirelessly among each other to cooperatively monitor and access the properties of their targeted environments. Applications reach from health monitoring, through industrial and environmental monitoring to safety applications.

    pdf278p 123859674 04-07-2012 37 9   Download

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