This best-selling, easy to read, communication systems book has been extensively revised to include an exhaustive treatment of digital communications. Throughout, it emphasizes the statistical underpinnings of communication theory in a complete and detailed manner. Table of Contents Random Processes. Continuous-Wave Modulation. Pulse Modulation. Baseband Pulse Transmission. Signal-Space Analysis. Passband Digital Transmission. Spread-Spectrum Modulation. Multiuser Radio Communications. Fundamental Limits in Information Theory. Error-Control Coding. Appendices. Glossary. Bibliography. Index.