@conference{10902/39112, year = {2025}, url = {https://hdl.handle.net/10902/39112}, abstract = {Energy-efficient designs are proposed for multi-user (MU) multiple-input multiple-output (MIMO) broadcast channels (BC), assisted by simultaneously transmitting and reflecting (STAR) reconfigurable intelligent surfaces (RIS) operating at finite block length (FBL). In particular, we maximize the sum energy efficiency (EE), showing that STAR-RIS can substantially enhance it. Our findings demonstrate that the gains of employing STAR-RIS increase when the codeword length and the maximum tolerable bit error rate decrease, meaning that a STAR-RIS is more energy efficient in a system with more stringent latency and reliability requirements.}, organization = {I. Santamaria’s work was funded by MCIN/AEI/10.13039/ 501100011033, under Grant PID2022-137099NBC43 (MADDIE) and FEDER UE, and by European Union’s (EU’s) Horizon Europe project 6G-SENSES under Grant 101139282. E. Jorswieck’s work was supported in part by the Federal Ministry of Education and Research (BMBF, Germany) through the Program of Souveran. Digital. Vernetzt. joint ¨ Project 6G-RIC, under Grant 16KISK031, and by European Union’s (EU’s) Horizon Europe project 6G-SENSES under Grant 101139282. Robert Schober’s work was funded by the German Ministry for Education and Research (BMBF) under the program of “Souveran. Digital. Vernetzt.” joint project ¨ 6G-RIC (Project-ID 16KISK023). L. Hanzo would like to acknowledge the financial support of the Engineering and Physical Sciences Research Council (EPSRC) projects under grant EP/Y026721/1, EP/W032635/1, EP/Y037243/1 and EP/X04047X/1 as well as of the European Research Council’s Advanced Fellow Grant QuantCom (Grant No. 789028).}, publisher = {Institute of Electrical and Electronics Engineers, Inc.}, publisher = {IEEE 26th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Surrey, United Kingdom, 2025}, title = {Energy efficiency optimization of finite block length STAR-RIS-aided MU-MIMO broadcast channels}, author = {Soleymani, Mohammad and Santamaría Caballero, Luis Ignacio and Jorswieck, Eduard and Schober, Robert and Lajos, Hanzo}, }