Four Frequency-Shift Keying (4-FSK) Spread Spectrum Modulator and Demodulator

reportActive / Technical Report | Accession Number: ADA267433 | Open PDF

Abstract:

This thesis explores the potential use of a four frequency-shift keying 4-FSK, spread spectrum modulator and demodulator MODEM in a low orbit satellite. In this first approach a short maximal length sequence of 127 chips would be used to spread the four frequencies. After successful implementation, the design could be extended to longer codes which would provide for greater processing gain. This MODEM was not preselected for use in satellite communications based on the merits of 4-FSK, but was assigned as one of four possible digital communication designs. A MODEM would be selected for use in the Petite Amateur Navy Satellite after a thorough design review.

Author(s):
Murray, Terrence J.
Author Organization(s):
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
Descriptive Note:
Master's rept.,
Pagination:
0101

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Monitor Series:
NPS
 Subject Terms
Joint Capability Areas:
JCA_6_Net Centric; JCA_6.3.3_Spectrum Management; JCA_6.1.3_Switching and Routing; JCA_6.1.2_Wireless Transmission; JCA_6.1.1_Wired Transmission; JCA_6.1_Information Transport; JCA_6.3_Net Management; JCA_5_Command and Control; JCA_5.4_Decide; JCA_1.4.2_Health Service Delivery; JCA_1.4_Force Support; JCA_1.2_Force Preparation; JCA_1_Force Support; JCA_4.6_Engineering; JCA_4.3_Maintain
Modernization Areas:
Space; Directed Energy; Fully Networked C3
Communities of Interest:
Space
Descriptor(s):
*ARTIFICIAL SATELLITES, *SATELLITE COMMUNICATIONS, *FREQUENCY SHIFT KEYERS, *MODEMS, EXPERIMENTAL DATA, EARTH ORBITS, MODIFICATION, DIGITAL COMMUNICATIONS, SPREAD SPECTRUM, FREQUENCY SHIFT, MODULATORS, DEMODULATORS, NAVY, THESES, SEQUENCES, LENGTH, GAIN
Field(s)/Group(s):
Electrical and Electronic Equipment, Radio Communications
Keyword(s):
*PACKET RADIO COMMUNICATIONS, PANSAT(PETITE AMATEUR NAVY SATELLITE)
Report Date:
1993 Mar 01