Bi-Orthogonal PCM Communications System Employing Multiplexed Noise Codes.

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Abstract:

This invention relates to a bi-orthogonal PCM communications system employing multiplexed noise codes to provide enhanced protection against interference. Two system approaches are described -- a first of which employs active, matched filter detection, whereas a second of which employs passive matched filter detection. The noise codes employed are of type termed code mates having correction functions which, upon detection, provide an impulse autocorrelation function. The described arrangements afford a transmission efficiently which extends towards Shannons theoretical limit.

Author(s):
Gutleber, Frank S.
Author Organization(s):
DEPARTMENT OF THE ARMY WASHINGTON DC
Descriptive Note:
Patent Application,
Pagination:
0022

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Availability: This Government-owned Invention Available For U.s. Licensing And, Possibly, For Foreign Licensing. Copy Of Application Available Ntis.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
PAT-APPL-108 195
 Subject Terms
Joint Capability Areas:
JCA_6.1_Information Transport; JCA_6_Net Centric
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*Patent applications, *Communication and radio systems, *Pulse code modulation, Digital systems, Orthogonality, Coding, Noise, Autocorrelation, Demodulation, Matched filters, Radio antijamming, Time division multiplexing
Field(s)/Group(s):
Radio Communications
Keyword(s):
Digital communications, Biorthogonal coding, Orthogonal coding, Noise codes
Report Date:
1979 Dec 28