ELECTRONIC EQUIPMENT INTERFERENCE CHARACTERISTICSCOMMUNICATION TYPE.
Abstract
The effects of multipath interference on the intelligibility of speech transmitted over an FM system employing time division multiplexing are reported. Predicted intelligibility measurements based on audio output S/N ratios indicate that significant degradation in intelligibility will exist for the FM/TDM system tested when multipath signals of equal strength are received over paths which differ in length by as little as 0.15 mile. The probability of significant multipath interference in FM systems which use TDM is expected to be greater than that for ordinary wide-band FM systems. The accuracy of mixer spurious response level prediction is demonstrated for variations in mixer operating and drive conditions. Utilization of the prediction technique in the design of mixers is discussed. Several significant facts concerning the design of radio receiving equipments as illuminated by the mixer studies are presented for future guidance. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 15, 1963
- Accession Number
- AD0433705
Entities
People
- C. W. Stuckey
- E. E. Donaldson Jr.
- E. W. Wood
- O. H. Ogburn
- R. D. Trammell Jr.
Organizations
- Georgia Tech