Multiplex communications – Wide area network – Packet switching
Patent
1982-08-12
1985-01-15
Ng, Jin F.
Multiplex communications
Wide area network
Packet switching
370 21, 375 96, 340350, H03K 1301, H04J 104
Patent
active
044942281
ABSTRACT:
An orthogonal code division multiple-access communications system comprised of a plurality of transceivers respectively employing orthogonal noise code mate pairs of a type having autocorrelation functions upon detection which when linearly added together compress into a lobeless impulse and wherein the same single time slot is utilized by all of the users in the system. Each user is assigned a different unique noise code pair consisting of code mate pairs that are selected from a subset of multiplexed noise codes whose cross-correlation function value is equal to zero at a time when all the code mate pairs compress to an impulse, i.e. .tau.=0. The described arrangement enables random access, or direct call-up, to be accomplished with no interference between the users while using different noise codes for each user.
REFERENCES:
patent: 4293953 (1981-10-01), Gutleber
patent: 4301530 (1981-11-01), Gutleber
Weik, Martin H., Communications Standard Dictionary, Van Nostrand Reinhold ompany, 1983, pp. 56, 200.
Gibson Robert P.
Lane Anthony T.
Murray Jeremiah G.
Ng Jin F.
The United States of America as represented by the Secretary of
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