VOICE/DATA MULTIPLEXER FOR COMMUNICATIONS

VIASAT, INC. IS PLEASED TO PRESENT THIS PROPOSAL TO DEVELOP A VOICE-DATA MULTIPLEXER TO IMPROVE EFFICIENT UTILIZATION OF COMMERCIAL TELEPHONE LINES FOR THE U.S. ARMY STRATEGIC DEFENSE COMMAND. OUR PROPOSAL DESCRIBES A CANDIDATE SYSTEM THAT SUPPORTS FULL DUPLEX NEAR-TOLL-QUALITY SECURE DIGITAL VOICE AND 19.2 KBPS (OR MORE) OF SECURE DIGITAL DATA ON A SINGLE 3 KHZ STANDARD NARROWBAND COMMERCIAL TELEPHONE LINE. OUR CONCEPT BUILDS ON VIASAT'S EXPERTISE ON ALL OF THE TECHNOLOGIES RELATED TO THE VOICE-DATA MUX, INCLUDING: SOURCE CODING, HIGH SPEED WIRELINE MODULATION AND CODING, AND EMBEDDED ENCRYPTION DEVICES. THE PROPOSAL ALSO CONSIDERS ARCHITECTURAL ISSUES, OFFERING EITHER STAND-ALONE, INDIVIDUAL BLACK BOX IMPLEMENTATIONS, OR A RACK-BASED SOLUTION THAT CAN BE SHARED BY MANY USERS AT A SITE. PHASE I IS PART OF A MULTI-PHASED PLAN FOR FEASIBILITY ANALYSIS, PROOF-OF-CONCEPT DEMONSTRATION AND FULL SCALE DEVELOPMENT OF THE VOICE-DATA MUX. THE PROPOSED WORK ALSO BENEFITS FROM ON-GOING VIASAT PROGRAMS INVOLVING HIGH PERFORMANCE MODEMS, SOURCE CODING, LAND EMBEDDED ENCRYPTION. THE PROPOSED WORK INCLUDES SIMULTION TO QUANTIFY MUX CAPACITY AND PERFORMANCE UNDER A VARIETY OF OPERATING CONDITIONS. FINALLY, VIASAT IS WELL POSITIONED TO APPLY THIS CRITICAL TECHNOLOGY TO BOTH COMMERCIAL AND GOVERNMENT MARKETS BASED ON OUR VENTURE CAPITAL BACKING AND ONGOING COMMERCIAL BUSINESSES.