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.
