Taub's principles of communication systems, 4e is a comprehensive discourse on the fundamentals of analog and digital communication techniques. For years, the book has served the academic requirements of the communication engineers, both budding and practicing. In the revised edition, the focus has been to continue to serve the communication engineers by focusing on the latest trends and modifying the content accordingly. Thus, this text delves deep into the annals of the digital communication space with a necessary prerequisite on analog communication principles. This book is a self-sustaining literature for an undergraduate as well as a graduate programmer on the principles of communication.salient featuresdetailed mathematical analysis of the principles of communication.extensive coverage of digital communication principles with elaborate discussions on information theory and coding techniques.pedagogical inclusions104 solved examples545 problems58 matlab examples420 diagramstable of contents1. Introduction: signal and spectra2. Amplitude modulation systems3. Angle modulation4. Pulse modulation and digital transmission of analog signals5. Digital modulation and transmission6. Random variables and processes7. Mathematical representation of noise8. Am reception performance under noise9. Fm reception performance under noise10. Phase locked loops11. Optimal reception of digital signal12. Noise in pulse code modulation and delta modulation systems13. Information theoretic approach to communication14. Error-control coding15. Communication systems and component noises16. Spread spectrum modulation17. Miscellaneous topics in communication systems.