clear all
close all

addpath('../IMPORT_FILTER');

% [estimates,NFrames]=load_estimates_lte_new('E:/EMOS/eNB_data_20120719_171732.EMOS',1000);
% [estimates_UE,NFrames_UE]=load_estimates_lte_new('E:/EMOS/UE_data_20120719_171714.EMOS',1000,1,0);

% [estimates,NFrames]=load_estimates_lte_new('E:/EMOS/eNB_data_20120719_163504.EMOS',10000);
% [estimates_UE,NFrames_UE]=load_estimates_lte_new('E:/EMOS/UE_data_20120719_163447.EMOS',10000,1,0);

load eNB_estimates
load UE_estimates

struct_template_new

%%
NFrames = 1000;
decimation = 1;
NFrames_eNB = size(estimates,2);
NFrames_UE = size(estimates_UE,2);

H_eNB = complex(zeros(floor(NFrames/decimation),size(fifo_dump_emos_struct_eNb.channel,1)/2,size(fifo_dump_emos_struct_eNb.channel,2)));
H_UE = complex(zeros(floor(NFrames/decimation),size(fifo_dump_emos_struct_UE.channel,1)/2,size(fifo_dump_emos_struct_UE.channel,2)));

% find the indices to align the eNB and the UE data
frames_eNB = [estimates.frame_tx]; %frame counter at eNB
frames_UE = [estimates_UE.frame_rx]; %frame counter at UE
frame0 = frames_UE(3);
idx0_eNB = find(frames_eNB==frame0);
idx0_UE = find(frames_UE==frame0);

%%
for k=1:NFrames %-max(idx0_eNB,idx0_UE)
    %disp([frame0+k-1 frames_eNB(idx0_eNB+k-1) frames_UE(idx0_UE+k-1)]);
    H_eNB(k,:,:) = double(estimates(idx0_eNB+k-1).channel(1:2:end,:)) + 1j*double(estimates(idx0_eNB+k-1).channel(2:2:end,:));
    H_UE(k,:,:) = double(estimates_UE(idx0_UE+k-1).channel(1:2:end,:)) + 1j*double(estimates_UE(idx0_UE+k-1).channel(2:2:end,:));
end

% size(H_eNB) = [NFrames,N_RB_UL_EMOS*12*N_PILOTS_UL_EMOS*N_SUBFRAMES_UL_EMOS,NB_ANTENNAS_RX_EMOS]
% where N_RB_UL_EMOS*12 = 25*12 = 300 is the number of usefull subcarriers
%       N_PILOTS_UL_EMOS = 2 is the number of OFDM symbols per subframe that have pilots
%       N_SUBFRAMES_UL_EMOS = 3 is the number of UL subframes per frame* 

% size(H_UE) =
% [NFrames,NUMBER_OF_OFDM_CARRIERS_EMOS*N_PILOTS_DL_EMOS*N_SUBFRAMES_DL_EMOS,NB_ANTENNAS_TX_EMOS]
% where NUMBER_OF_OFDM_CARRIERS_EMOS = 512 is the number of OFDM carrier
%       (out of which only the first 300 are non-zero)
%       N_PILOTS_DL_EMOS = 4 is the number of OFDM carriers that have pilots 
%       (linear interpolation in the frequency domain has already been
%       performed)
%       N_SUBFRAMES_DL_EMOS = 5 is the number of DL subframes per frame*

%       NB_ANTENNAS_TX_EMOS = NB_ANTENNAS_RX =2 is the number of antennas at the eNB
%       (the UE has one antenna for TX/RX)

% *here we are using TDD configuration 3 which looks like this (S = special subframe)
% [DL | S | UL | UL | UL | DL | DL | DL | DL | DL]


%%
figure(1)
hold off
plot([estimates.frame_tx])
hold on
plot([estimates_UE.frame_rx],'r')