Basic of Wireles Netwrok

Basic of Wireles Network

Summary

            The first commercially available radio and telephone system, known as the improved MobileTelephoe Service (IMTS), was put into service in 1946. This system was quite unsophisticated , as there were no solid-state electronic available at the time. Given these constriction, the number pf channels available did not come close to satisfyng the demand.

            Two important characteristic of cellular system contribute to their use fullnes. The first is their controlled handoff. Second, system were designed to locate particular subcribers y paging them in eachof the cells. The initial transmition technology used betwen the vehicle and thecell site was analog in nature and known as advanced Mobile Phones System (AMPS). In Europe GSM and TDMA  now known as Global System for Mobile Communications.

            Develop spread-spectrum technology called code-division multiple access (CDMA). The continuing  growth of cellular telecomunication to searchfor additional ways to satisfy the obvious. Canada, the decision was based on a beauty contest, a comparison of busines cases, technology, and future plans, rathe than the bidding process.

Abstrac

            This system was quite unsophisticated, system were designed to locate particular subcribers y paging them in eachof the cells, as there were no solid-state electronic available at the time. The initial transmition technology used betwen the vehicle and thecell site was analog in nature and known as advanced Mobile Phones System (AMPS).

            In Europe GSM and TDMA  now known as Global System for Mobile Communications. Canada, the decision was based on a beauty contest, a comparison of busines cases, technology, and future plans, rathe than the bidding process.