ST-DSA via Underlay Sensing & Signaling Navy SBIR FY2014.2 Sol No.: Navy SBIR FY2014.2 Topic No.: N142-112 Topic Title: ST-DSA via Underlay Sensing & Signaling Proposal No.: N142-112-0210 Firm: Silvus Technologies, Inc 10990 Wilshire Blvd Suite 1500 Los Angeles, California 90024 Contact: Phillip Duncan Phone: (310) 479-3333 Web Site: www.silvustechnologies.com Abstract: Over the past decade the research community has generated thousands of papers dealing with many different aspects of dynamic spectrum access, cognitive radios and opportunistic networking. Surprisingly, however, only a handful have addressed an end to end DSA communication system, and to the best of our knowledge none have looked at how DSA can be enabled in a single transceiver legacy radio. This is per-haps not surprising since the research community is seldom concerned about the transitionability of their results. By striving for optimality we often require new approaches that require new waveforms or hard-ware architectures and as such ignore the vast investment already made in legacy equipment and the dec-ade long pipeline of program of record (PoR) approved equipment that is yet to be fielded. In our proposed approach we look to strike a balance between maximizing throughput gain via DSA and maximizing the probability for a timely and successful transition. Our approach is based on a novel mechanism for sensing of the spectrum and exchange of the sensing data within the network without any interruption of the data traffic and without any hardware blocks external to the legacy radio. Benefits: The anticipated results from the proposed approach are quite compelling, the ability to revive a network that has "died" due to excessive in-band jamming or interference is hugely powerful with applications in both military and commercial systems. The potency is amplified if the proposed approach can achieve this for legacy systems that have already been fielded. Our proposed approach does just that. The resulting work can benefit military wireless communication systems such as SRW, WNW and SINCGARS, as well as find application in the commercial space for systems, such as WiFi, that operate in the heavily congested unlicensed ISM bands. Return