Narrowband Interference Mitigation for MUOS Navy SBIR FY2011.2 Sol No.: Navy SBIR FY2011.2 Topic No.: N112-170 Topic Title: Narrowband Interference Mitigation for MUOS Proposal No.: N112-170-0326 Firm: TrellisWare Technologies, Inc. 16516 Via Esprillo Suite 300 San Diego, California 92127-1708 Contact: Thomas Halford Phone: (858) 663-5310 Web Site: www.trellisware.com Abstract: Narrowband interference mitigation in wideband channels is extremely challenging when prior knowledge of the interfering signal cannot be assumed at the receiver. TrellisWare Technologies, Inc.'s proposed solution employs Quantization-Based Estimation (QBE), which is a technique that leverages concepts from source coding theory in the definition of a universal interference signal estimator. When the interference power exceeds the spreading factor of the signal-of-interest (SOI) -- i.e., when addtional interference mitigation beyond that natively provided by the waveform is required -- a properly designed QBE filter can subtract an accurate reconstruction of the interfering waveform from the received signal. The SOI is then recovered by a suitably modified spread spectrum receiver. Benefits: The technology developed under this program has an obvious avenue for commercialization in the government sector. Specifically, TrellisWare proposes to work with Boeing and/or General Dynamics (GD) and the JPEO JTRS in order to transition the technology developed herein to JTRS MUOS receivers. The technology developed under this program could also benefit commercial SATCOM applications. Spread spectrum in used in a number of commercial VSAT systems. TrellisWare spun-out of ViaSat in 2000; TrellisWare will leverage its relationship with ViaSat - a recognized leader in the commercial SATCOM field - in pursuing commercial markets for our interference mitigation cancellation technology. Return