Tactical networks may potentially encounter interference in their operational environment, from a range of possible sources. In order to maintain a fully connected network, where every node can communicate with any other node, it is imperative to consider intelligent solutions that leverage all available means to mitigate the impact of potential interference on the network as a whole. These include PHY layer enhancements (e.g. receive antenna diversity, digital signal processing (multiple-input interference cancellation / signal separation), Adaptive Coding and Modulation (ACM), etc.), MAC layer enhancements (e.g. intelligent routing, link state adaptation, distributed network health and status monitoring, transmit signal diversity), and even operator feedback (e.g. suggested pitch/yaw adjustment to effect improved antenna diversity). To efficiently solve this complex multi-faceted problem, Adaptive Dynamics, Inc. proposes DIAMOND-GEMINI, a cross-layer multi-platform solution that leverages prior TRL 8 Interference Mitigation technologies with other PHY layer enhancement strategies to maintain full network connectivity and maximize throughput in challenging interference environments. Initial performance simulations indicate that the proposed DIAMOND-GEMINI architecture can maintain a fully connected network with high probability as long as the SNR for each link remains a few dB above threshold, independent of the ISR.
Benefit: The proposed DIAMOND-GEMINI solution will allow tactical terminals in a wireless network to cooperatively maximize their overall network connectivity and throughput in both contested and congested environments. This will enable the networked tactical terminals to be far more robust and thus allow them to operate in more adverse conditions. This improved connectivity and throughput for the networked terminals has multiple benefits for the warfighter, including reducing the platform standoff range, increasing operations into denied areas, increasing the mission success probability, reducing the taskforce resources required for missions with fewer losses, increasing the targeting accuracy meaning less munitions required to complete the mission, etc.
Keywords: Interference Mitigation, Interference Mitigation, digital signal processing, transmit and receive antenna diversity, link state adaption, Adaptive Coding and Modulation, PHY and MAC Layer enhancements, cross-layer multi-platform solutions, Intelligent Routing
