Accession Number : ADA314239

Title :   Mutual Interference in Fast-Frequency-Hopped, Multiple-Frequency-Shift-Keyed, Spread-Spectrum Communication Satellite Systems.

Descriptive Note : Research rept.,

Corporate Author : RAND CORP SANTA MONICA CA

Personal Author(s) : Bedrosian, Edward

PDF Url : ADA314239

Report Date : 1996

Pagination or Media Count : 72

Abstract : This report presents the results of a theoretical analysis of a frequency hopping, multiple frequency shift keyed, spread spectrum communication system using a nonprocessing communication satellite transponder. A large number of users are assumed to be hopping pseudo-randomly about the transponder passband in time synchronization and approximate frequency synchronization. The users are assumed to be free to hop independently with the result that they occasionally interfere with one another. Formulations are presented that permit assessment of the level of mutual interference, thereby facilitating the selection of system parameters that will maximize the communication throughput of the system. The results presented here are purely theoretical. Numerical calculations will be presented in graphical form in a future report. These will then be used to develop a satellite loading procedure. They will also be extended to apply to hard-limiting satellite transponders and to consider the effects of jamming.

Descriptors :   *COMMUNICATION SATELLITES, *RADIO INTERFERENCE, *FREQUENCY SHIFT KEYERS, *SPREAD SPECTRUM, COMPUTERIZED SIMULATION, PARAMETERS, THEORY, NUMERICAL ANALYSIS, COMMUNICATION EQUIPMENT, FREQUENCY BANDS, MILITARY APPLICATIONS, THROUGHPUT, JAMMING, SYNCHRONIZATION(ELECTRONICS), COMMUNICATION AND RADIO SYSTEMS, TELECOMMUNICATIONS, AIR FORCE PLANNING, TRANSPONDERS.

Subject Categories : Radiofrequency Wave Propagation
      Unmanned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE