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The NMSE performance of the proposed EDRSN scheme and the conventional LS estimation is tested in Fig. 8 with different numbers of reflecting elements, N = 32 and 64. It can be seen that the channel matrix becomes more sparse as N increases, so the NMSE performance of the EDRSN scheme at N = 64 is better than that at N = 32. Besides, the EDRSN scheme is superior to the conventional LS estimation at both N = 32 and N = 64, which well demonstrates the superiority of the EDRSN scheme with different N. |
IEEE/ICACT20230157 Slide.16
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