Dynamic time division duplexing (TDD) is envisioned as a vital transmission technology of the 5G new radio, due to its reciprocal propagation characteristics. However, the potential cross-link interference (CLI) imposes a fundamental limitation against the feasibility of the ultra-reliable and low latency communications (URLLC) in dynamic-TDD systems. In this work, we propose a near-optimal and complexity-efficient CLI suppression scheme using orthogonal spatial projection, while the signaling overhead is limited to B-bit, over the back-haul links. Compared to the state-of-the-art dynamic-TDD studies, proposed solution offers a significant improvement of the URLLC outage latency, e.g., -199% reduction, while boosting the achievable capacity per the URLLC packet by +156%.
@article{arxiv.2001.05705,
title = {Cross-Link Interference Suppression By Orthogonal Projector For 5G Dynamic TDD URLLC Systems},
author = {Ali A. Esswie and Klaus I. Pedersen},
journal= {arXiv preprint arXiv:2001.05705},
year = {2020}
}