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IEEE/ICACT20220275 Question.4 Questioner: namacabale@gmail.com 2022-02-15 오후 5:46:43	IEEE/ICACT20220275 Answer.4 Answer by Auhor seikou696@asagi.waseda.jp 2022-02-15 오후 5:46:43
Dear Author, you have a very good research. However, I would like to know if the technology today capable of implementing your proposed algorithm? Is there an existing technology almost similar to your proposal that has been deployed in real world environment? Thank you and stay safe.	Thanks for your question. I feel that this technology has a still long way to be implemented. Currently, various telecommunication companies and university institutions are experimenting with the design of IRS for beyond5G, and network construction is still in the simulation stage. On the other hand, regarding OAM multiplexing communication, many researches and experiments in industry have been conducted to verify the feasibility of OAM wireless communications. OAM-MIMO multiplexing RF communication with a total of 11 OAM modes achieves a transmission rate of 100 Gbps over a transmission distance of 10 meters. Multiplexing of OAM modes can achieve better capacity and energy efficiency compared with conventional LOS-MIMO. However, OAM-related schemes face a severe challenge as strict alignment condition between transmit and receive UCAs is required. In addition, experiments combining OAM multiplexing and IRS have not yet been conducted, and verification by simulation is insufficient.

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