Proposed Two-Stage Channel Estimation Scheme
|Require: , , W, V, L t|
|1: Stage 1: Set the absorbing mode and estimate hd,k|
|2: Stage 2: Set the IRS to the perfect reflecting mode|
|3: Compute , and set|
|4: for 1 ≤ i≤ L t do|
|6: Select ,|
|9: end for|
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