Research Article
Channel Estimation for Broadband Millimeter Wave MIMO Systems Based on High-Order PARALIND Model
Algorithm 2
PARALIND-based channel estimation algorithm.
Input: Received signals | Step 1: Model the received signals as PARALIND; | Step 2: Estimate and by PARALIND decomposition algorithm, denoted as and ; | Step 3: Estimate from by solving (32), denoted as ; | Step 4: Estimate the column space of the array steering vectors of scatter multipath from by solving (33), denoted as | Step 5: Estimate AoAs from by solving (34)-(42), denoted as ; | Step 6: Construct the estimation of array steering matrix by ; | Step 7: Estimate path fading coefficients by solving (43), denoted as , given and ; | Step 8: Calculate the estimation of path fading coefficients matrix of th subcarrier channel | | Where is the th column of . The estimation of can be obtained by using (6). | Output: Estimated channel ; |
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