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W-CDMA: Mobile Communications System
The remarkable progress in information technology (IT) since the late 1990s continues to facilitate faster communications, broadband access and lower communication costs in the information and communications sector. Consequently, communications has penetrated not only the business scene but also every aspect in personal life, to the extent of dramatically changing people’s lifestyles. The widespread use of the Internet, which appeared in the...
426 p dtu 20/11/2012 185 3
Từ khóa: Mobile Communications System, thông tin liên lạc, broadband access, information communications, thông tin truyền thông, thông tin viễn thông
Understanding Telephone Electronics
The Battle of New Orleans (1 8 14) was the only major land battle won by the United States during the War of 1812. But it was a hollow victory because it took place two weeks after the war ended. The message announcing the end of the war did not arrive in time. Why? Communications in 1814 were very slow. Messages went by horseback courier or sailing ship. General Andrew Jackson enjoyed no better communications between Washington and New...
418 p dtu 20/11/2012 170 3
Từ khóa: điện tử điện thoại, Understanding Telephone Electronics, road system, thông tin liên lạc, kỹ thuật thông, thông tin điện tử, công nghệ điện tử
Understanding Data Communications: From Fundamentals to Networking
Man’s constant quest to communicate has resulted in a quantum leap in technology related to data communications. For the past quarter century the maximum obtainable transmission rate on many types of communications facilities has doubled every three to five years. During the past few years this growth rate has accelerated, with emerging technologies providing a transmission capability an order of magnitude or more above what were considered...
858 p dtu 20/11/2012 188 3
Từ khóa: Data Communications, truyền thông dữ liệu, thông tin liên lạc, kỹ thuật truyền thông, công nghệ truyền thông, kỹ thuật dữ liệu
Signal processing for mobile communications
Signal processing (SP) is a key research area in mobile communications. The recent years have known a real explosion in research addressing different aspects of mobile communications signal processing. This area is continuously expanding with emerging applications and services such as interactive multimedia and Internet. SP has to meet the new challenges presented to future mobile communication systems such as very low bit error rates, very...
812 p dtu 20/11/2012 208 4
Từ khóa: Signal processing, mobile communications, xử lý tín hiệu, truyền thông di động, communication systems, thông tin liên lạc
Mạng VÀ CÁC DỊCH VỤ THÔNG DỤNG TRÊN INTERNET
Ngày nay với xu hướng mạng toàn cầu hoá, thì sự liên lạc thông tin qua lại giữa các máy theo mô hình Client/Server là một trong những ứng dụng quan trong cơ bản về mạng và nó không thể thiếu trong hệ thống liên lạc thông tin hiện nay. Có rất nhiều dịch vụ hỗ trợ trên Internet theo mô hình này như e-mail, web, FPT, nhóm tin Usernet, telnet, truyền tập tin, đăng...
121 p dtu 19/11/2012 234 4
Từ khóa: mạng toàn cầu hoá, liên lạc thông tin, mô hình Client/Server, hệ thống thông tin,
Op amps are high gain amplifiers, and are used almost invariably with overall loop feedback. The principle of the feedback amplifier has to rank as one of the more notable developments 20th century— right up there with the automobile or airplane for breadth of utility, and general value to engineering. And, most importantly, such feedback systems, although originally conceived as a solution to a communications problem, operate today in more...
946 p dtu 15/11/2012 186 4
Từ khóa: OP AMP applications, feed, back amplifier, feedback systems, hệ thống thông, kỹ thuật thông tin, thông tin liên lạc
Radio Frequency Circuit Design
The cellular telephone has become a symbol for the rapid change in the communications business. Within this plastic container reside the talents of engineers working in the areas of efficient power supplies, digital circuit design, analog circuit design, semiconductor device design, antennas, linear systems, digital signal processing, packaging, and materials science. All these talents are carefully coordinated at a cost that allows a wide...
340 p dtu 15/11/2012 218 4
Từ khóa: Radio Frequency Circuit Design, digital circuit design, circuit design, thiết kế mạch, xữ lý tín hiệu, thông tin liên lạc
Multicarrier Techniques for 4G Mobile Communications
By “planar transmission line” we mean a transmission line whose conductors are on planes. Examples are microstrips and slotlines. By “device” we mean a component that is capable of having some electrical property in addition to the obvious “RF” connecting characteristic. Examples are directional couplers and phase shifters. All the devices we will study are made of planar transmission lines. By “network” we mean a set of...
259 p dtu 15/11/2012 165 3
Từ khóa: 4G Mobile Communications, thông tin liên lạc, planar transmission line, transmission lines, công nghệ mạng 4G, kỹ thuật mạng
Of all the communications services available today, wireless services are having the most dramatic impact on our personal and professional lives, enhancing personal productivity, mobility, and security. With every new wireless product and service, the boundary between home and office is blurred further, perhaps to the point that one day they will be indistinguishable. Instead of the flexible work schedule, wireless products and services give...
560 p dtu 10/11/2012 178 3
Từ khóa: Wireless A to Z, wireless services, wireless industry, công nghệ không dây, kỹ thuật mạng, thông tin liên lạc
Adaptive filtering and change detection
This book is rather broad in that it covers many disciplines regarding both mathematical tools (algebra, calculus, statistics) and application areas (airborne, automotive, communication and standard signal processing and automatic control applications). The book covers all the theory an applied engineer or researcher can ask for: from algorithms with complete derivations, their properties to implementation aspects.
498 p dtu 09/11/2012 166 2
Từ khóa: Adaptive filtering, signal processing, automatic control, xử lý tín hiệu, điều khiển tự động, thông tin liên lạc
Algorithms for communications systems and their applications Part2
This volume presents the logical arithmetical or computational procedures within communications systems that will ensure the solution to various problems. The authors comprehensively introduce the theoretical elements that are at the basis of the field of algorithms for communications systems. Various applications of these algorithms are then illustrated with particular attention to wired and wireless network access technologies.
586 p dtu 06/11/2012 241 2
Từ khóa: communications systems, wireless network, access technologies, công nghệ không dây, thông tin liện lạc, kỹ thuật thông tin
Algorithms for communications systems and their applications Part1
This volume presents the logical arithmetical or computational procedures within communications systems that will ensure the solution to various problems. The authors comprehensively introduce the theoretical elements that are at the basis of the field of algorithms for communications systems. Various applications of these algorithms are then illustrated with particular attention to wired and wireless network access technologies.
730 p dtu 06/11/2012 223 2
Từ khóa: communications systems, wireless network, access technologies, công nghệ không dây, kỹ thuật viễn thông, thông tin liên lạc