Accession Number:

ADA071223

Title:

Measurement of Random Time Variant Linear Channels,

Descriptive Note:

Corporate Author:

SIGNATRON INC LEXINGTON MASS

Personal Author(s):

• Bello,Phillip A.

Report Date:

1968-09-10

Pagination or Media Count:

33.0

Abstract:

This paper concerns the problems of the measureability and measurement of radom time-variant linear channels. With regard to measureability, a mew, less stringent channel measureability criterion is proposed to supercede the BL product introduced by Kailath. This criterion involves the area of occupancy of the Doppler-delay spread function or its dual. By using time and bandwidth constraints on the input and output of a channel, the channel measurement problem is reduced to the measurement techniques are described and their performances determined for the two cases wherein the channel correlation function is known and unknown. Author

Descriptors:

• *ACOUSTIC CHANNELS
• TIME DEPENDENCE
• SIGNAL TO NOISE RATIO
• LEAST SQUARES METHOD
• GAIN
• DELAY
• ACOUSTIC FILTERS
• INPUT OUTPUT MODELS
• FOURIER ANALYSIS
• DOPPLER EFFECT
• SPREAD SPECTRUM
• ACOUSTIC COMMUNICATIONS

Subject Categories:

• Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE