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[calcWiener]

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- calc W_pilots
[RX]
- added delta_freq for tracking (Zwischenstand)


git-svn-id: http://moon:8086/svn/matlab/trunk@52 801c6759-fa7c-4059-a304-17956f83a07c
This commit is contained in:
jens
2015-05-02 08:55:06 +00:00
parent 82695cae43
commit 42cf28baf6
2 changed files with 46 additions and 20 deletions
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ofdm/calcWiener.m
+26 -8
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@@ -1,4 +1,4 @@
function W_syms = calcWiener(drm_mode, drm_bw)
function [W_syms, W_pilots] = calcWiener(drm_mode, drm_bw)
% calcWiener('B', '10k');
[params, spec_occ] = drm_params(drm_mode, drm_bw);
@@ -23,6 +23,7 @@ f_D_max = f_cut_t*12000/Ns/2
tau_max = f_cut_k*Nu/12000/2
W_syms = cell( params.y, 1 );
W_pilots = cell( params.y, 1 );
for d=0:window_delay-1
k2_pos = [];
@@ -33,12 +34,14 @@ for d=0:window_delay-1
k2_pos = [k2_pos c]; % length = window_delay*frames_per_window
t2_pos = [t2_pos ones(1, length(c))*(s)]; % length = window_delay*frames_per_window
ref_gain_a = [ref_gain_a a];
end
end
num_gain_ref_per_window = length(k2_pos);
carriers = spec_occ.kmin:spec_occ.kmax;
PHI = zeros(length(k2_pos));
PHI = zeros(num_gain_ref_per_window);
% PHI
for k1=1:length(k2_pos)
k2 = [1:length(k2_pos)];
for k1=1:num_gain_ref_per_window
k2 = [1:num_gain_ref_per_window];
k1_pos = k2_pos(k1);
t1_pos = t2_pos(k1);
PHI(k1,k2) = sinc(f_cut_k*(k1_pos-k2_pos)) .* sinc(f_cut_t*(t1_pos-t2_pos));
@@ -47,14 +50,29 @@ for d=0:window_delay-1
PHI_inv = inv(PHI);
THETA = zeros(1, length(k2_pos));
% W_Syms
THETA = zeros(1, num_gain_ref_per_window);
% THETA
carriers = spec_occ.kmin:spec_occ.kmax;
for k1=1:length(carriers)
k2 = [1:length(k2_pos)];
k2 = [1:num_gain_ref_per_window];
k1_pos = carriers(k1);
t1_pos = window_delay;
THETA(k2) = sinc(f_cut_k*(k1_pos-k2_pos)) .* sinc(f_cut_t*(t1_pos-t2_pos));
W_syms{d+1}(:, k1) = transpose( THETA*PHI_inv );
end
% W_Pilots
[c, p, a] = getRefGain(params, spec_occ, d);
THETA = zeros(1, num_gain_ref_per_window);
% THETA
for k1=1:length(c)
k2 = [1:length(k2_pos)];
k1_pos = c(k1);
t1_pos = frames_per_window-1;
THETA(k2) = sinc(f_cut_k*(k1_pos-k2_pos)) .* sinc(f_cut_t*(t1_pos-t2_pos));
W_pilots{d+1}(:, k1) = transpose( THETA*PHI_inv );
end
end
W_syms
W_pilots