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IEEE/ICACT20220275 Slide.14        [Big Slide]	Oral Presentation
	Signal processing is as follows: First, QPSK modulated signals are assigned to each OAM modes. After allocation, the power is allocated for each OAM mode according to the power allocation optimization algorithm. After IDFT processing, the radio waves are emitted from the antenna elements of the UT. Next, the IRS set the phase shift according to the IRS¡¯s reflecting phase shift optimization algorithm. Radio waves with noise coming from the UT are reflected according to the phase shift and reach the UR. After DFT, IMI suppression methods reduce the noise power. Last, the original signal is obtained by QPSK demodulation.

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