TY  - JOUR
T1  - Design Method of RIS in Multiple Access
AU  - Kim, Yonghwi 
AU  - Chae, Chan-Byoung 
JO  - The Journal of Korean Institute of Communications and Information Sciences
PY  - 2022
DA  - 2022/1/15
DO  - 10.7840/kics.2022.47.10.1527
KW  - RIS
KW  - Multiple Access
KW  - DF Relay
AB  - In this paper, we propose a analytical design method of reconfigurable intelligent surface (RIS) supporting multiple access. Comparing the performance of the relay, especially decode-and-forward (DF), we analyze transmit power consumed by base station with single antenna through theorems and simulations. Based on multiple access technologies such as time sharing, we can confirm that RIS needs 65 or more elements to derive better performance than DF relay in a multiple access environment.