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IEEE/ICACT20220184 Question.5 Questioner: dlgusdn2@kaist.ac.kr 2022-02-15 오후 6:24:38	IEEE/ICACT20220184 Answer.5 Answer by Auhor gmpdf.7704@ruri.waseda.jp 2022-02-15 오후 6:24:38
What is the major achievement of this paper, and also what is further study issue from this?	Thank you for your question. There are two main achievements for us. The first achievement is interference reduction. Our research proposes to install new small earth stations in the environment of terrestrial 5G networks. When deploying earth stations, we need to be very careful not to affect the 5G terminals that are already communicating as much as possible. Therefore, we have achieved peak power reduction by introducing spread spectrum technology. We also found that high spectral utilization efficiency can be achieved compared to existing multiple access methods by using Gold codes. The second is to improve the spectrum utilization efficiency. Spreading code division and power level division make it possible to multiplex a large number of users into the same bandwidth. In anticipation of the further increase in communication in the next generation of networks, we need to consider the effective use of radio waves, which are an important resource. In the future, we plan to verify the effects of interference on terrestrial 5G networks through demonstration experiments, and to replicate the DSSS-PDMA processing scheme in practice.

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