Bi-Orthogonal PCM Communications System Employing Multiplexed Noise Codes.
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 Shannon's theoretical limit.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 28, 1979
- Accession Number
- ADD007615
Entities
People
- Frank S. Gutleber
Organizations
- United States Army