Digital Modulation Techniques

This newly revised and expanded edition of an Artech House classic builds on its success as far and away the most comprehensive guide to digital modulation techniques used in communications today. It devotes five new chapters to orthogonal frequency division multiplexing (OFDM) including its synchronization, performance in fading channels, channel estimation and equalization, peak-to-average power reduction techniques, and non-FFT based OFDM. The second edition includes new modulations for optical communications and enhanced coverage of M-ary ASK, pulse shaping, and mitigation methods like channel estimate and diversity techniques. It also adds a fast-access comparison of all modulation schemes that will prove indispensable for various research and design tasks. You get full details for every technique including operation principles, bit error probability, spectral characteristic, modulator, demodulator, synchronizer, performance in fading channels, comparison with other techniques, and applications. The book makes it easy to find implementation diagrams or data like BER and bandwidth occupied by each scheme for a given data rate, and allows you to confidently formulate modulation schemes and determine which schemes are best for your applications. Almost all schemes and their performance evaluation expressions are backed by derivation or proof, giving you the analytical background needed to improve or modify schemes for specific applications. Nearly 400 illustrations include block diagrams of modulator, demodulator, and synchronizer for most modulation schemes. Plus, new appendixes covering trigonometry identities, Fourier transform pairs and properties, and Q-function and error function values provide even more time-saving assistance for your work.