Digital Communications

An up-to-date and comprehensive text on the rapidly expanding field of fixed and mobile communications, including data networks and packet switched systems. The aim of the book is (1) to develop the mathematical theory behind signal processing as used in modern digital communications systems, (2) to extend these theoretical signalling concepts into information links which are robust in the presence of noise and other impairment mechanisms, (3) to investigate how these transmission links can be developed into fixed and mobile data communications systems for voice and video transmission, and (4) to develop queuing theory techniques and explore their development in small and large scale data transmission networks such as ISDN. The material is set in an appropriate historical context, and a substantial number of numerical and practical examples are included in the text. Cover......Page 1 Contents......Page 4 Preface......Page 16 Acks......Page 18 Abbreviations......Page 19 Symbols......Page 26 Special functions......Page 31 Ch1: Digital comms overview......Page 33 Pt1: Signals and systems theory......Page 50 Ch2: Periodic & transient signals......Page 52 Ch3: Random signals & noise......Page 120 Ch4: Linear systems......Page 164 Pt2: Digital comms principles......Page 198 Ch5: Sampling, multiplexing & PCM......Page 200 Ch6: Baseband transmission & line coding......Page 243 Ch7: Decision theory......Page 276 Ch8: Optimal filtering for tx & rx......Page 291 Ch9: Information theory & source coding......Page 336 Ch10: Error control coding......Page 360 Ch11: Bandpass modulation of a carrier signal......Page 396 Ch12: System noise & comms link budgets......Page 457 Ch13: Comms systems simulation......Page 499 Pt3: Applications......Page 550 Ch14: Fixed point microwave comms......Page 551 Ch15: Mobile & cellular radio......Page 609 Ch16: Video tx & storage......Page 645 Pt4: Networks......Page 670 Ch17: Queuing theory for packet networks......Page 671 Ch18: Network topology & protocols......Page 689 Ch19: Public networks & ISDN......Page 714 App A: erf......Page 746 Refs......Page 749 Index......Page 759 End......Page 763 Digital Communications aims to explain the mathematical theory behind signal processing, extend this information into practical transmission links, investigate these links and explore their function in fixed and mobile transmission systems