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. ?? 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