[{"_id":"53282","language":[{"iso":"eng"}],"user_id":"67076","author":[{"full_name":"Soleymani, Mohammad","last_name":"Soleymani","first_name":"Mohammad"},{"full_name":"Santamaria, Ignacio","last_name":"Santamaria","first_name":"Ignacio"},{"first_name":"Eduard","last_name":"Jorswieck","full_name":"Jorswieck, Eduard"},{"first_name":"Robert","last_name":"Schober","full_name":"Schober, Robert"},{"full_name":"Hanzo, Lajos","last_name":"Hanzo","first_name":"Lajos"}],"year":"2024","title":"Optimization of the Downlink Spectral- and Energy-Efficiency of  RIS-aided Multi-user URLLC MIMO Systems","status":"public","date_updated":"2024-04-05T13:18:19Z","date_created":"2024-04-05T09:16:32Z","external_id":{"arxiv":["2402.16434"]},"department":[{"_id":"263"}],"type":"preprint","citation":{"short":"M. Soleymani, I. Santamaria, E. Jorswieck, R. Schober, L. Hanzo, ArXiv:2402.16434 (2024).","chicago":"Soleymani, Mohammad, Ignacio Santamaria, Eduard Jorswieck, Robert Schober, and Lajos Hanzo. “Optimization of the Downlink Spectral- and Energy-Efficiency of  RIS-Aided Multi-User URLLC MIMO Systems.” <i>ArXiv:2402.16434</i>, 2024.","apa":"Soleymani, M., Santamaria, I., Jorswieck, E., Schober, R., &#38; Hanzo, L. (2024). Optimization of the Downlink Spectral- and Energy-Efficiency of  RIS-aided Multi-user URLLC MIMO Systems. In <i>arXiv:2402.16434</i>.","ieee":"M. Soleymani, I. Santamaria, E. Jorswieck, R. Schober, and L. Hanzo, “Optimization of the Downlink Spectral- and Energy-Efficiency of  RIS-aided Multi-user URLLC MIMO Systems,” <i>arXiv:2402.16434</i>. 2024.","ama":"Soleymani M, Santamaria I, Jorswieck E, Schober R, Hanzo L. Optimization of the Downlink Spectral- and Energy-Efficiency of  RIS-aided Multi-user URLLC MIMO Systems. <i>arXiv:240216434</i>. Published online 2024.","bibtex":"@article{Soleymani_Santamaria_Jorswieck_Schober_Hanzo_2024, title={Optimization of the Downlink Spectral- and Energy-Efficiency of  RIS-aided Multi-user URLLC MIMO Systems}, journal={arXiv:2402.16434}, author={Soleymani, Mohammad and Santamaria, Ignacio and Jorswieck, Eduard and Schober, Robert and Hanzo, Lajos}, year={2024} }","mla":"Soleymani, Mohammad, et al. “Optimization of the Downlink Spectral- and Energy-Efficiency of  RIS-Aided Multi-User URLLC MIMO Systems.” <i>ArXiv:2402.16434</i>, 2024."},"publication":"arXiv:2402.16434","abstract":[{"text":"Modern wireless communication systems are expected to provide improved\r\nlatency and reliability. To meet these expectations, a short packet length is\r\nneeded, which makes the first-order Shannon rate an inaccurate performance\r\nmetric for such communication systems. A more accurate approximation of the\r\nachievable rates of finite-block-length (FBL) coding regimes is known as the\r\nnormal approximation (NA). It is therefore of substantial interest to study the\r\noptimization of the FBL rate in multi-user multiple-input multiple-output\r\n(MIMO) systems, in which each user may transmit and/or receive multiple data\r\nstreams. Hence, we formulate a general optimization problem for improving the\r\nspectral and energy efficiency of multi-user MIMO-aided ultra-reliable\r\nlow-latency communication (URLLC) systems, which are assisted by reconfigurable\r\nintelligent surfaces (RISs). We show that a RIS is capable of substantially\r\nimproving the performance of multi-user MIMO-aided URLLC systems. Moreover, the\r\nbenefits of RIS increase as the packet length and/or the tolerable bit error\r\nrate are reduced. This reveals that RISs can be even more beneficial in URLLC\r\nsystems for improving the FBL rates than in conventional systems approaching\r\nShannon rates.","lang":"eng"}]}]