Accession Number : AD0813738

Title :   ERROR RATE ANALYSIS OF M-ARY TRANSMITTED-REFERENCE SYSTEMS USING THE SUNDE TROPOSCATTER MODEL.

Descriptive Note : Final technical rept. Jul 66-Feb 67,

Corporate Author : PHILCO-FORD CORP PALO ALTO CA SPACE AND RE-ENTRY SYSTEMS DIV

Personal Author(s) : Schuchman, L. ; Magill, D. T. ; Jones, J. J.

Report Date : APR 1967

Pagination or Media Count : 120

Abstract : M-ary orthogonal and differentially coded transmitted-reference systems have been evaluated as to their performance in a Sunde troposcatter channel model. It has been found that the irreducible time dispersion bound decreases with M for orthogonal coding and increases with M for differentially coherent coding (M = 2, 4, and 8). The results have been compared with several other troposcatter systems that have, in the past, been evaluated using the Sunde model. The results show that several of the M-ary techniques can improve the irreducible bound by more than an order of magnitude. An illustrative design is shown in block diagram from which demonstrates a simple but efficient realization of a high data rate tropo communications system. (Author)

Descriptors :   *PHASE MODULATION), (*PULSE CODE MODULATION, (*RADIO TRANSMISSION, PULSE CODE MODULATION), COMPUTER PROGRAMS, SCATTERING, TROPOSPHERE, PERFORMANCE(ENGINEERING), SINGLE SIDEBAND COMMUNICATIONS, MULTIPLEXING, INFORMATION THEORY, RADIOFREQUENCY POWER, ERRORS, RADIO INTERFERENCE, DEMODULATION, COMPUTER PROGRAMS, FOURIER ANALYSIS, DIVERSITY RECEPTION, RADIO TRANSMITTERS, RADIO RECEIVERS.

Subject Categories : Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE