tag:blogger.com,1999:blog-31011780288858130202024-08-29T05:45:16.443+12:00Wireless Communications Technology BlogPrinciples and Practice for Engineers and Engineering Students on Wireless Communications TechnologyUnknownnoreply@blogger.comBlogger4125tag:blogger.com,1999:blog-3101178028885813020.post-47952785715379280112010-02-24T05:37:00.003+13:002010-02-24T05:51:19.907+13:00Mobile Radio Telephony in the U.S.In 1946, the first public mobile telephone service was introduced in twenty-five major American cities. Each system used a single, high-powered transmitter and large tower in order to cover distances of over 50 km in a particular market.
The early FM push-to-talk telephone systems of the late 1940s used 120 KHz of RF bandwidth in a half-duplex mode (only one person on the telephone call could Unknownnoreply@blogger.com1tag:blogger.com,1999:blog-3101178028885813020.post-42605471508309626452010-02-24T05:02:00.000+13:002010-02-24T05:22:25.215+13:00Evolution of Mobile Radio CommunicationsA brief history of the evolution of mobile communications throughout the world is useful in order to appreciate the enormous impact that cellular radio and Personal Communication Services (PCS) will have on all of us over the next several decades. It is also useful for a newcomer to the cellular radio field to understand the tremendous impact that government regulatory agencies and service Unknownnoreply@blogger.com1tag:blogger.com,1999:blog-3101178028885813020.post-24101641913906476822010-02-24T04:34:00.000+13:002010-02-24T04:39:43.180+13:00Introduction to Wireless Communication SystemsThe ability to communicate with people on the move has evolved remarkably since Gugliemo Marconi first demonstrated radio's ability to provide continuous contact with ships sailing the English Channel. That was in 1897, and since then new wireless communications methods and services have been enthusiastically adopted by people throughout the world.Particularly during the past ten years,the mobileUnknownnoreply@blogger.com0tag:blogger.com,1999:blog-3101178028885813020.post-53893228391889899182010-02-24T04:29:00.000+13:002010-02-24T04:34:05.052+13:00Welcome to Wireless Communications Technology BlogWelcome to Wireless Communications Technology Blog @ http://wireless-communications-technology.blogspot.com/ We will be writing about Wireless, Mobile, GSM, CDMA, 1G, 2G, 2.5G, 3G, 4G, Bluetooth, WLAN, LAN, Radio, GPRS, EDGE, Telephone, Cell, Model, Modulation, Multiple Access, Equalization, Diversity, Coding, AMPS, Channel, Traffic, Link BudgetUnknownnoreply@blogger.com0