Improved High Frequency Communications

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00014-12-M-0231
Agency Tracking Number: N121-097-0411
Amount: $80,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2012
Solicitation Year: 2012
Solicitation Topic Code: N121-097
Solicitation Number: 2012.1
Small Business Information
River Valley Wireless LLC
Kurz Purdue Technology Center, 1281 Win Hentschel Boulevard, E1916, West Lafayette, IN, -
DUNS: 141089925
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 James Lehnert
 (765) 775-1003
Business Contact
 James Lehnert
Title: President
Phone: (765) 775-1003
Research Institution
An investigation of wideband high frequency radio transmissions will be performed when ionospheric skywave propagation, or near vertical incidence skywave propagation, is utilized. The characteristics of the channel will be examined as a function of the operating frequency, polarization, and time of day. The study will be used to develop a multiple-input, multiple-output transmission scheme that increases the data throughput of currently used radios. The waveforms and algorithms will be defined and modeled, and the performance will be predicted. Methods for aggregating bandwidth to achieve high data throughputs will be investigated. The goal is to achieve the information theoretic capacities of the links with new modulation and coding methods. Schemes for adaptive bandwidth allocation will be studied. Methods to provide reliable communication when significant interference and jamming is present will be evaluated. Also, modifications to current relaying schemes in high frequency networks will be studied so that an effective utilization of the high throughput data links can be achieved. A methodology to achieve approval by the International Telecommunications Union and by the Federal Communications Commission will be developed. Preliminary steps will be taken to implement the research in a prototype radio system.

* information listed above is at the time of submission.

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