H - Electricity – 04 – J
Patent
H - Electricity
04
J
325/3
H04J 13/00 (2006.01) H04J 3/07 (2006.01)
Patent
CA 1193671
Abstract of the Disclosure An orthogonal code division multiple access communi- cations system is disclosed involving multiple users while pro- viding orthogonal operation, meaning that there is substantially zero interference between users. All of the users employ a mutually different time permutation of the same multi-bit direct sequence pseudo noise code with a synchronous time reference for all of the users being established through a central node or station which communicates with all of the users preferably through a loopback synchronous timing scheme. Each pseudo noise code is followed by an extra processing bit that balances the number of one and zero bits in the composite information bit which has the effect of providing a code structure which will have a cross- correlation value of zero with the other time permutated codes which enables the system to operate as an orthogonal system.
437956
Aspila Kalevi P.
The Government Of The United States As Represented By The Secret
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