Pareto Frontier proposes to accomplish the overall objective of achieving improvements in tactical network capacity and throughput via advanced digital processing techniques geared for implementation on the MIDS JTRS platform. A substantial increase in spectral efficiency can be realized by minimizing the spacing between adjacent frequency hop channels. In order to realize these potential throughput gains the receiver must be able to tolerate the resulting adjacent channel interference (ACI) caused by partially overlapping channels. While ACI mitigation is similar to generalized interference mitigation for Anti-Jam resilience, there are unique challenges and opportunities present which must be addressed properly to yield an optimal solution. To this end, Pareto Frontier proposes to enhance and extend its Omni-Spatial-Interference-Removal-Integrated-System (OSIRIS); a modular and scalable STAP engine that is able to fully exploit available degrees of freedom to provide maximum interference mitigation coverage under a wide range of environments. The augmented solution will incorporate key elements specifically addressing mitigation of dynamic interference caused by neighboring channel pulses without impacting sensitivity or Anti-Jam capability of the baseline solution rendering the novel Adaptive Capacity Enhancing System With Interference Cancellation Leveraging Duality (ACES WILD), yielding a projected capacity gain of over 100% the baseline system. As part of the Phase 1 effort, Pareto Frontier will establish under the baseline task a comprehensive Matlab model of the solution and complete an FPGA processing architecture to facilitate projection of required FPGA resources. The solution will be further tailored to best fit within what is available on the MIDS platform hardware. Pareto Frontier will work extensively with its industry partner to ensure successful positioning for a Phase II transition and achievement of a TRL 6 demonstration. Transition preparation work will include detailed technical planning and design to properly embed the solution within relevant MIDS terminal hardware and logistical program planning to organize the work-flow involved in terminal design implementation, lab integration/test and final demonstration. Option activities will further mitigate hardware transition risk via completion of fixed-point algorithm conversion and proof-of-concept implementation on surrogate hardware along with extended MIDS integration risk mitigation.
Benefit: As the demand for increased data communications capability becomes ever more ubiquitous in the modern battlefield, techniques for increasing spectral efficiency and resilience to adjacent channel interference have become a crucial component to ensure mission success. The use of advanced digital processing techniques has the potential to be a powerful means of enabling denser networks with a larger number of users individually achieving greater throughput levels. While the concept of adjacent channel interference mitigation to improve spectral efficiency has been substantially developed and matured for several decades, there are still multiple facets of the technology that can be improved particularly when considering integration within a tactical frequency-hopping communications enabled platform. All services within the DOD can stand to benefit from maturation of this technology and there are numerous application opportunities within the private sector market. The technology is immediately applicable to many DOD systems which are forced to operate in exceedingly spectrally congested environments due to commercial auction of spectral bands such as AWS-3. Furthermore the potential benefit to ACI affected users in the commercial sector including cellular communications systems is readily apparent.
Keywords: advanced spectral efficiency techniques, advanced spectral efficiency techniques, network capacity improvements, Optimal Signal Processing, partial overlapping channel solutions, adjacent channel interference mitigation, MIDS JTRS, interference cancellation
