Wireless Communications Design Handbook: Space Interference

Wireless Communications Design Handbook: Space Interference, 9780125507219 (0125507216), Academic Press, 1998

During the decade of the !970s and even in the early 1980s, satellite communications was basically analog (though digital was already in the drawing board), and most satellites were huge, bulky, and in geosynchronous orbit. Most of the satellites in lower orbits were either military or scientific in nature~ Things have changed within the past five to seven years. Most satellites now perform their functions using digital technology, and lower orbits such as low earth orbit (LEO) and medium earth orbit (MEO) are the main objective of most satellites being built today. These satellites are also low in weight (1000 to 15~ lb), which means that they can be launched by less expensive launch vehicles, lowering the cost not only of the satellites themselves, but also of the launch services to be used. These smaller satellites are being built for various telecommunication ente~rises embarked on bringing customers the wireless cellular and paging revolution. Most of these services will be operating by the year 2000 and are exacted to provide a huge advance for many ~e~ in the world lacking wireto-wire telecommunications infrastructure (about 60% of the world population!).

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