… elements that can be smartly configured to manipulate wireless propagation environment for
… 1, we consider an active RIS-assisted MU-MISO system, where an active RIS is deployed to …

… 1, we consider a STAR-RIS-aided MU-MISO communication … (R) of STAR-RIS, respectively,
where the STAR-RIS consists of M … Feng, “RIS configuration, beamformer design, and power …

… advantages in multiple-input singleoutput (MISO) systems. Specifically, for achieving the …
determines a specific RIS unit via a closed-form solution when the other configurations are fixed…

… to be configured at the RIS. Since the vast number of elements at the RIS cannot receive
and … Contributions To acquire the CSI of the time-varying channels in a RISassisted MU-MISO …

… Specifically, during the UL channel training phase, we adjust the RIS configuration over …
RIS configuration and transmit power allocation to assist in the DL communications. …

… In this work, we aim at filling up this gap by considering a general IRS-assisted multi-user
(MU) multiple-input single-output (MISO) system with imperfect channel state information (CSI) …

… configure the STAR-RIS, which is commonly implemented by a field-programmable gate
array. Tx sends independent signals simultaneously for each Bob in the same frequency. Let us …

… • The UL channel training phase: During the UL channel training phase, we adjust the RIS
configuration over training blocks according to the environment-aware codebook. Then, we …

… efficient joint beamforming techniques for RIS-assisted downlink MU-MISO systems. By
splitting … Furthermore, our algorithm exhibited robustness across various system configurations, …

… a RIS-assisted multi-user Multiple Input Single Output (MISO) … station and RIS, as well as the
channels between RIS and users… each p-th RIS training configuration the matrix Zp ∈ CK×M …