Advanced electronic communications systems

From the Publisher: In addition to updating all topics in order t present the latest information available in this fast-changing field, completely new sections have been added in this edition to include coverage of the following important topics: Trellis encoding CCITT modem recommendations PCM line speed Extended superframe format Wavelength division multiplexing Kepler's laws Clark orbits Limits of visibility Also included is an entirely new chapter (Chapter 10) which is devoted to critical coverage of: Mobile telephone systems (including AMPS, PCS, and PCSS) This text is written for use in undergraduate level electronic communications courses in which students have prior knowledge of some of the basic electronic principles as well as an understanding of mathematics through the fundamental concepts of calculus.