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function [H, PG] = genChannelDrop(par, v, samples_per_sec)
% Distance
dist_tot = v * par.sequenceLength / samples_per_sec;
samples_per_meter = 1 / (dist_tot / par.sequenceLength);
% par.l.simpar.samples_per_meter = samples_per_meter; not necessary
% Create tracks
for i = 1:par.l.no_rx
name = par.l.track(1, i).name;
par.l.track(1, i) = qd_track('linear', 1/samples_per_meter*(par.sequenceLength - 1));
par.l.track(1, i).name = name;
par.l.track(1, i).scenario = 'BERLIN_UMa_NLOS';
end
% Add random positions
distances = sqrt(rand(1, par.l.no_rx)*(par.maxDistance^2 - par.minDistance^2)+par.minDistance^2);
angles = (2 * rand(1, par.l.no_rx) - 1) * par.sectorAngleRad;
par.l.rx_position = [cos(angles) .* distances; sin(angles) .* distances; 1.5 .* ones(1, par.l.no_rx)];
for i = 1:par.l.no_rx
par.l.track(1, i).movement_profile = ...
[0, 1 / samples_per_meter * (par.sequenceLength - 1) / v; ...
0, 1 / samples_per_meter * (par.sequenceLength - 1)];
par.l.track(1, i).interpolate('time', 1/samples_per_sec);
end
% for i=1:par.l.no_rx
% a = par.l.track(1,i).initial_position+par.l.track(1,i).positions;
% if sum(abs(atan(a(2,:)./a(1,:))) > par.sectorAngleRad)
% disp('Out of sector angle')
% i
% end
% if sum(sqrt(a(1,:).^2+a(2,:).^2) > par.maxDistance)
% disp('Out of range r')
% i
% end
% end
% Get channel impulse reponses
H_raw = par.l.get_channels();
% Get channels in frequency domain: only consider single carrier
H = zeros(1, par.l.no_rx, par.l.tx_array.no_elements, par.sequenceLength);
PG = zeros(1, par.l.no_rx);
for k = 1:par.l.no_rx
h = squeeze(H_raw(k).fr(par.bandwidth, 1, 1:par.sequenceLength));
pg = sqrt(10.^(0.1 * H_raw(k).par.pg_parset));
h = h / pg;
% Visualize channels
% figure
% surf(real(h), 'EdgeColor', 'None');
% view(2)
% title('Real part CSI sample sequence')
% xlabel('shapshots')
% ylabel('BS antennas')
% figure
% surf(imag(h));
% view(2)
% title('Imag part CSI sample sequence')
% xlabel('n shapshots')
% ylabel('BS antennas')
H(1, k, :, :) = single(h);
PG(1, k) = single(pg);
end
H = {H};
PG = {PG};
end
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