Accession Number : AD0464554


Title :   INTRODUCTION TO THE ANALYSIS OF INTERFERENCE TO THE PERFORMANCE OF COMMUNICATIONS SYSTEMS


Descriptive Note : Technical rept.


Corporate Author : IIT RESEARCH INST ANNAPOLIS MD


Personal Author(s) : Mayher, R


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/464554.pdf


Report Date : May 1965


Pagination or Media Count : 246


Abstract : This is an introductory report discussing the analysis of the effects of unintentional interference on the performance of communications systems. The analysis includes interference signals of six off-tuned, non-design types of modulation and seven types of receivers. It contains a generally tractable problem approach and a general analysis of the cases considered and is introductory in the sense that only the most important of the large number of non-design modulation cases have been analyzed. The cases that have been analyzed consist of the desired to undesired signal types of AM to AM, FM to FM, SSB to SSB, AM to Pulse, FM to Pulse, SSB to Pulse, Pulse to Pulse, FSK to Pulse, AM to Noise plus Interference, FM to Noise plus Interference, PM to Noise plus Interference and both AM and FM Multiplex systems. The solutions obtained for the digital systems represent an almost complete performance evaluation in terms of the probability of false alarm and false dismissal. The solutions for analog and voice systems are partial performance solutions obtained as a function of the design parameters and signal-to-interference ratios.


Descriptors :   *INTERFERENCE , *COMMUNICATION AND RADIO SYSTEMS , FREQUENCY SHIFT KEYERS , RADIO INTERFERENCE , VOICE COMMUNICATIONS , PHASE MODULATION , MULTIPLEXING , FREQUENCY MODULATION , DEMODULATORS


Subject Categories : Radiofrequency Wave Propagation
      Radio Communications


Distribution Statement : APPROVED FOR PUBLIC RELEASE