MILITARY COMMUNICATIONS SYSTEMS ARE SUBJECT TO TRAUMA.

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$49,787.00
Award Year:
1983
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
267
Agency Tracking Number:
267
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
P.o. Box 7966, Ann Arbor, MI, 48107
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
() -
Business Contact:
Bob Barkley
(313) 994-1291
Research Institution:
n/a
Abstract
MILITARY COMMUNICATIONS SYSTEMS ARE SUBJECT TO TRAUMA. CERTAIN CHANNELS FAIL FOR PROTRACTED PERIODS OF TIME. THE RED NOISE PROBLEM ARISES WHEN SOME, BUT NOT ALL, OF THE CHANNELS LINKING A SENDER TO A RECEIVER BECOME INOPERATIVE. THE SOLUTIONS TO THIS PROBLEM ARE CALLED POOL/SPLIT/ RESTITUTE PROCESSES. P/S/R PROCESSES AMOUNT TO WAYS TO ENCODE DIGITAL MESSAGES AT A SENDING NODE SO AS TO MAKE SURE THAT ALL TRANSMITTED INFORMATION GETS THROUGH AND IS DECODED CORRECTLY AT THE RECEIVING NODE WHENEVER AT LEAST K OUT OF THE N CHANNELS LINKING THOSE TWO NODES REMAIN OPERATIVE. P/S/R PROCESSES ARE DESIGNED TO WORK EVEN THOUGH THE SENDING NODE HAS NO WAY TO TELL WHICH OF THE CHANNELS IT IS USING ARE INOPERATIVE. IT HAS BEEN KNOWN FORAT LEAST TWO YEARS THAT THE ENCODE AND THE DECODE OPERATIONSIN A P/S/R PROCESS ARE FASTER AND SIMPLER THAN THOSE IN ANY BUT THE WEAKEST AND MOST TRIVIAL ERROR CORRECTING CODES. MOREOVER THE BAND WIDTH EXPANSION IS TYPICALLY SMALLER IN A P/S/R PROCESS THAN IN AN ERROR CORRECTING CODE ADAPTED TO DOTHE SAME JOB. THIS PROJECT IS AIMED AT PRODUCING A FURTHER ORDERS-OF-MAGNITUDE IMPROVEMENT IN THE THEORY OF P/S/R PROCESSES. THIS CARRIES OVER INTO A COMPARABLE IMPROVEMENT IN IMPLEMENTING THEM.

* information listed above is at the time of submission.

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