Hun-Seok Kim, Achilleas Anastasopoulos, Lei Ying


This research program investigates instantaneous feedback-based adaptive communications (IFAC) for next generation wireless communication systems. The proposed IFAC enables sub-bit-level real-time adaptation of the wireless communication signal to exploit dynamic tradeoffs in spectral efficiency, reliability, and latency based on the instantaneous feedback from the receiver. This research program investigates the feasibility of instantaneous feedback-based wireless communication systems to attain a superior performance closer to the theoretical channel capacity and reliability limit, outperforming state-of-the-art conventional approaches. The proposed IFAC has great potential as a critical enabling technology for the next generation (beyond 5G) URLLC that targets 100 micro-second latency and 99.99999% reliability for short message transmission. Attaining such stringent URLLC goals with IFAC can enable various classes of new applications including autonomous micro-robots, intelligent automated factories, and virtual/augmented reality systems for people with disabilities. The proposed research program includes undergraduate- and graduate-level curricula development as an integral part. It will contribute to new course materials that cover interdisciplinary topics that range from wireless communication theory and data-driven reinforcement learning to real-time hardware system prototyping.