Accession Number : AD0486866

Title :   EVALUATION OF SPECIAL MODULATION TECHNIQUES. VOLUME II. APPENDICES A,C,D,E, AND F.

Corporate Author : ITT COMMUNICATION SYSTEMS INC PARAMUS NJ

Report Date : SEP 1964

Pagination or Media Count : 150

Abstract : The purpose of this report is to determine lower bounds on the binary error probability of the Kathryn HF Modem caused only by the frequency-selective fading of the HF transmission medium. Thus, the effects of additive noise and pilot tone instabilities are not included. A more rigorous analysis including all types of system disturbances appears possible but was omitted due to time limitations. It is interesting to note, however, that preliminary analysis indicates frequency-selective fading is likely to be the major limitation for the not unusual multipath spreads of one millisecond or greater when receiver-grated time-guard bands are not used.

Descriptors :   (*MODULATION, MATHEMATICAL ANALYSIS), DEMODULATION, HIGH FREQUENCY, PROBABILITY, INTEGRAL EQUATIONS, TABLES(DATA).

Subject Categories : Electricity and Magnetism
      Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE