"During the last two decades, we have witnessed an ever-increasing demand for reliable and secure communications. These demands were satisfied with the implementation of digital transmission for short and long distances. The volume and clarity of voice, data, and video transmission will increase substantially in the early 21st century.". "This book presents in detail the three media used in digital transmission: line-of-sight, satellite, and optical fibers. It also provides the reader with practical examples of system design."--BOOK JACKET.
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