PART I INTRODUCTION TO A COMMUNICATION SYSTEM, RADIO SPECTRUM, AND INFORMATION1.1 MODEL OF A COMMUNICATION SYSTEM1.2 RADIO SPECTRUM AND ITS UTILIZATION1.3 CONCEPT OF INFORMATION1.4 COMMUNICATION CHANNEL AND LINK BUDGETSPART II NOISE IN A COMMUNICATION CHANNEL1.5 NOISE IN COMMUNICATION SYSTEMS1.6 MODULATION–DEMODULATION SCHEMES IN A COMMUNICATION SYSTEM1.7 DIGITAL TRANSMISSIONPART III IMPACT OF SYSTEM DESIGN ON THE REQUIREMENTS OF FILTER NETWORKS1.8 COMMUNICATION CHANNELS IN A SATELLITE SYSTEM1.9 RF FILTERS IN CELLULAR SYSTEMS1.10 IMPACT OF SYSTEM REQUIREMENTS ON RF FILTER SPECIFICATIONS1.11 IMPACT OF SATELLITE AND CELLULAR COMMUNICATIONS ON FILTER TECHNOLOGYSUMMARYREFERENCESAPPENDIX 1A INTERMODULATION DISTORTION SUMMARY