Xem 1-20 trên 50 kết quả Mobile phone service
  • The third generation (3G) mobile communication system is the next big thing in the world of mobile telecommunications. The first generation included analog mobile phones [e.g., Total Access Communications Systems (TACS), Nordic Mobile Telephone (NMT), and Advanced Mobile Phone Service (AMPS)], and the second generation (2G) included digital mobile phones [e.g., global system for mobile communications (GSM), personal digital cellular (PDC), and digital AMPS (D-AMPS)].

    pdf568p nhq_khtn 12-03-2011 92 38   Download

  • With some six billion mobile subscriptions now in use worldwide, around three-quarters of the world’s inhabitants now have access to a mobile phone. Mobiles are arguably the most ubiquitous modern technology in some developing countries, more people have access to a mobile phone than to clean water, a bank account or even electricity. Mobile communications now offer major opportunities to advance human development from providing basic access to education or health information to making cash payments and stimulating citizen involvement in democratic processes.

    pdf244p konbetocroi 03-01-2013 52 13   Download

  • When Evan Williams, founder of Blogger and Odeo, had to pick up what he would do next to revolutionize the Web, he decided to go mobile. Evan returned the VC money to focus on Twitter—a service that allows keeping in touch with friends via alerts to and from your mobile phone (and instant messenger and web)! After six months of launch, Twitter had reached 50,000 active users. The number doubled to 100,000 in just one month after Twitter won the Best Blog award at South By South West conference....

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  • The mobile phone and portable device handset are currently undergoing a transformation caused by several different factors. For one, portable devices are getting more powerful and capable of performing tasks that would have been hard to imagine a few short years ago. Many of us carry a portable device that is capable of everything from using the World Wide Web to watching movies to playing 3D games--and it can even make phone calls! For another, consumers are becoming more savvy and demanding about what they want such a device to do....

    pdf418p meojunior 04-12-2010 236 114   Download

  • KỸ THUẬT RADIO OVER FIBER AMC AMPS AP BB BPF BPSK Adaptation Modulation and Coding Advanced Mobile Phone Service Access Point Base Band Band Pass Filter Binary Phase Shift Keying Broadband Wireless Access BWAN CDMA CS CSPDN DFB DMOD Network Code division Multiple Access Central Station Circuit Switched Data Network Distributed Feed Back(laser) DeMODdulator Đa truy cập phân chia theo mã Trạm trung tâm Mạng chuyển mạch dữ liệu Laser hồi tiếp phân tán Bộ giải điều chế Bộ điều chế và mã hoá Dịch vụ di động tiên tiến Điểm truy cập Bă...

    pdf12p caott5 22-05-2011 142 54   Download

  • Viết tắt của Global System Mobile Communication, hê thông truyên thông di đông ̣ ́ ̀ ̣ toaǹ câù . GSM la ̀ hệ thôń g điện thoaị maṇ g lưới hoàn toàn sử dụng kỹ thuâṭ số, khác với hệ thống mạng điện thoại analog cổ điên̉ như AMPS (Advanced Mobile Phone Service: Dic̣ h vu ̣ điêṇ thoaị di động cao câṕ ). 1G, 2G, 3G là gì?

    doc9p black_0nline 25-07-2011 168 49   Download

  • Providing an overview of developing games for Windows Phone 7 while working within XNA Game Studio 4, this comprehensive resource covers such essential topics as device/emulator, development tools, device orientation, tilt and accelerometer sensors, multi-touch, working with Cloud and Web services, and more. Three complete games are included within the book plus hands-on explanations and clear example codes help you gain a deeper understanding of the Windows Phone 7 features so that you can start building a game right away....

    pdf602p coc_xanh 16-01-2013 35 12   Download

  • This book explains the basic components, technologies used, and operation of IS-95 CDMA systems. You will discover why mobile telephone service providers have upgraded from 1st generation analog systems to more efficient and feature rich 2nd generation system. You will also discover how 2nd generation systems are gradually evolving into 3rd generation broadband multimedia systems. This book starts with the system components and basic services that the IS-95 CDMA system can provide.

    pdf192p beobobeo 01-08-2012 35 11   Download

  • An access point (AP) provides the connection between one or more wireless client devices and a wired local area network (LAN). The AP is usually connected to the LAN via a Category-5 cable connection to a hub or switch. Client devices communicate with the AP over the wireless link, giving them access to all other devices through the hub or switch, including a router on the other side of the hub, which provides Internet access

    pdf561p taurus23 02-08-2012 21 10   Download

  • Social media is not the only emerging channel P&G is using to connect directly with consumers. In November 2011 the company announced a partnership with a start-up called Mobeam to distribute digital coupons via mobile phones. The companies plan to begin testing the solution—which requires enhancements to existing handsets—in 2012. Diageo is another CG manufacturer that has also turned to social media—Facebook specifi cally—to enhance its consumer marketing efforts and drive retail beverage sales.

    pdf22p nhacchovina 22-03-2013 33 9   Download

  • 5G technologies will change the way most high-bandwidth users access their phones. With 5G pushed over a VOIP-enabled device, people will experience a level of call volume and data transmission never experienced before.5G technology is offering the services in Product Engineering, Documentation, supporting electronic transactions (e-Payments, e-transactions) etc. As the customer becomes more and more aware of the mobile phone technology, he or she will look for a decent package all together, including all the advanced features a cellular phone can have.

    pdf12p lazy115 01-08-2013 32 7   Download

  • Mobile messaging technology enables users to communicate in an asynchronous manner, where messages are stored in the network and delivered to the recipient as soon as the recipient’s mobile phone can receive it. Once delivered, the message resides on the users’ mobile phone. SMS (Short Messaging Service) allows a mobile user to send and receive a text message of up to 160 characters and across virtually any operator network. This service is also referred to as “text messaging” or “texting”. All mobile phones shipped over the past few years support SMS.

    pdf0p doiroimavanchuadc 06-02-2013 18 6   Download

  • AN INTRODUCTION TO CELLULAR PHONE SYSTEMS The first mobile communications system began in 1921 when the Detroit Police Department installed two-way radios in its cars. The equipment was bulky, awkward, and a drain on automobile batteries, but it proved its worth. Soon police and fire departments throughout the country were installing two-way radio equipment in their fleets. Eventually someone realized that private individuals could also benefit from being able to talk with the outside world from their cars, and the first commercial mobile telephone service was instituted in St.

    pdf7p tienvovan 16-09-2010 56 5   Download

  • As mobile phone users expect ubiquitous coverage and enhanced data services, mobile service providers are looking for new, more cost-effective ways of delivering on those demands. They also need to deploy new services, such as on-demand TV, video and music services. ADC’s Digivance Distributed Antenna Systems (DAS) provide a costeffective solution to these challenges.

    pdf4p halanh 14-08-2009 79 4   Download

  • In the last two decades, wireless communication systems such as cordless phones, paging systems, wireless data networks, satellite-based and cellular mobile systems have been steadily increasing in both popular importance and technological sophistication. The firstgeneration wireless systems were developed in the late 1970s and 1980s and were based on analog technology (such as the Advance Mobile Phone Service (AMPS) by AT&T and Nordic Mobile Telephone (NMT) by Ericsson).

    pdf26p tienvovan 11-09-2010 25 4   Download

  • The mobile phone is a highly, targeted device with typically one user. As such, powerfully accurate and relevant communication messages can be delivered where users become instantly engaged with campaigns and content resulting in increased campaign effectiveness. • The environment in which people interact with their mobile phone does not lend itself to detailed information search and delivery. Instead, mobile users seek quick and convenient access to information and services when they are out and about.

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  • Microsoft đã đưa ra một kênh mạnh mẽ cho các lập trình viên gửi và cập nhật thông tin cho ứng dụng mobile từ dịch vụ web (web service đã học trước đó), tính năng này được gọi là Push Notification Service. Trong bài giảng này chúng ta sẽ cùng tìm hiểu một số nội dung liên quan đến tính năng nói trên. Mời các bạn cùng tham khảo.

    ppt12p kiepnaybinhyen_01 27-11-2015 15 4   Download

  • The Experts’ Meeting was held in the Mitsubishi Research Institute and was attended by 81 people (see Appendix I for the list of participants). Childnet International and the Internet Association, Japan have been co-operating for some years on issues that affect child safety and participation on the Internet. The two organisations held a joint meeting at the Second World Congress on the Commercial Sexual Exploitation of Children in Yokohama in December 2001. At that meeting some of the challenges posed by the new 3G mobile services in Japan were first discussed.

    pdf60p bin_pham 05-02-2013 25 3   Download

  • ABC receives nearly all its funding directly from the government via legislative appropriations, and is prohibited by law from airing commercial advertising on domestic television and radio services (although it does have the capacity to earn additional revenue via merchandising). Early in its history, ABC was funded by a license fee, though this was abolished in 1973 when the Labor government argued that the near-universality of television and radio meant that direct public funding was a more equitable method of providing revenue (Inglis 2006). In 2008, ABC received $728.

    pdf101p thamgiacongdong 02-05-2013 10 3   Download

  • Bài 3 và 4 của bài giảng Lập trình Windows Phone (Module 4) trang bị cho người học những kiến thức về WCF và Cloud. Trong bài giảng này người học sẽ tìm hiểu hai nội dung chính, đó là: WCF – Windows Communication Foundation, Windows Azure Mobile Services. Mời các bạn tham khảo.

    ppt18p kiepnaybinhyen_01 27-11-2015 8 3   Download

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