Electronic communications systems : fundamentals through advanced Upplaga 4

Electronic Communications Systems: Fundamentals Through Advanced, Fourth Edition, provides comprehensive coverage of the field of electronic communications. It introduces the reader to the basic concepts of conventional analog electronic communications systems and expands the reader's knowledge to more modern digital, optical fiber, microwave, satellite, and cellular and PCS telephone communications systems. All topics have been updated to present the latest information available in this fast-changing field, and completely new sections have been added to cover the following important topics: AM envelopes produced by complex nonsinusoidal signals Quadrature Amplitude Modulation Noise limiters and blankers Alternate signal-to-noise measurements Single-sideband suppressed carrier and frequency division multiplexing Double-sideband suppressed carrier and quadrature multiplexing Microstrip and stripline Light sources, optical power, optical sources, and link budget Trellis encoding CCIt modem recommendations PCM line speed Extended superframe format and wavelength division multiplexing Kepler's laws Clark orbits, and limits of visibility In addition, an entirely new chapter has been added with coverage of: Mobile telephone systems (including AMPS, PSC, 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.