Accession Number:

ADA142129

Title:

Adaptive Spread Spectrum Receiver Using Acoustic Surface Wave Technology.

Descriptive Note:

Final rept. 1 Apr 81-31 Mar 84,

Corporate Author:

RENSSELAER POLYTECHNIC INST TROY NY DEPT OF ELECTRICAL COMPUTER AND SYSTEMS ENGINEERING

Personal Author(s):

• Das,P.
• Milstein,L. B.

Report Date:

1984-05-31

Pagination or Media Count:

71.0

Abstract:

This technical report summarizes the results of the research we have been engaged in regarding the use of surface acoustic wave devices in direct sequence spread spectrum receivers. The heart of this research has been the use of the device as a real-time Fourier transformer. A system of this type is sometimes referred to as a compressive receiver, and our use of the system has been primarily as a means to implement a narrowband interference rejection filter. In addition, we have studied many other topics such as rapid acquisition, Hilbert transform generation, etc. and these topics are all overviewed in this report. Author

Descriptors:

• *RECEIVERS
• *RAYLEIGH WAVES
• *SURFACE ACOUSTIC WAVE DEVICES
• *ACOUSTIC COMMUNICATIONS
• FOURIER TRANSFORMATION
• SURFACE WAVES
• ACOUSTIC WAVES
• CODING
• QUARTZ
• ADAPTIVE SYSTEMS
• MATCHED FILTERS
• BANDPASS FILTERS
• LITHIUM NIOBATES
• CORRECTIONS
• COMPRESSIVE PROPERTIES
• TRANSFORMERS
• SPREAD SPECTRUM
• ACOUSTIC DELAY LINES

Subject Categories:

• Line, Surface and Bulk Acoustic Wave Devices
• Acoustics
• Non-Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE