19 lines
672 B
Matlab
19 lines
672 B
Matlab
function [w_hybrid, F_RF] = algo_hybrid_dft(w_opt, A_dic, N_RF, a_target, R_in)
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% algo_hybrid_dft: 基于最大相关性(DFT)选择 + 数字基带 MVDR 的基线算法
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% 1. 找出与理想波束相关性最大的 N_RF 个原子
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projection = A_dic' * w_opt;
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[~, sort_idx] = sort(abs(projection), 'descend');
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F_RF = A_dic(:, sort_idx(1:N_RF));
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% 2. 同样使用数字基带 MVDR 压制干扰
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a_eff = F_RF' * a_target;
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R_eff = F_RF' * R_in * F_RF;
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F_BB_mvdr = (inv(R_eff) * a_eff) / (a_eff' * inv(R_eff) * a_eff);
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% 3. 合并
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w_hybrid = F_RF * F_BB_mvdr;
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w_hybrid = w_hybrid / norm(w_hybrid);
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end
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