Commit 2805391f authored by Florian Kaltenberger's avatar Florian Kaltenberger
Browse files

updated script so it does multiple measurements without any reconfiguration in between


git-svn-id: http://svn.eurecom.fr/openair4G/trunk@4139 818b1a75-f10b-46b9-bf7c-635c3b92a50f
parent c9f8d500
......@@ -2,6 +2,8 @@
# % Organisation: Eurecom (and Linkoping University)
# % E-mail: mirsad.cirkic@liu.se
addpath('/homes/kaltenbe/Devel/openair/openair4G/trunk/targets/ARCH/EXMIMO/USERSPACE/OCTAVE');
clear
paramsinitialized=false;
limeparms;
......@@ -41,7 +43,7 @@ rf_rxdc = rf_rxdc*active_rf;
freq_rx = fc*active_rf;
freq_tx = freq_rx; %+1.92e6;
tx_gain = txgain*active_rf;
tx_gain = txgain.*active_rf;
rx_gain = rxgain*active_rf;
oarf_config_exmimo(card, freq_rx,freq_tx,tdd_config,syncmode,rx_gain,tx_gain,eNB_flag,rf_mode,rf_rxdc,rf_local,rf_vcocal,rffe_rxg_low,rffe_rxg_final,rffe_band,autocal_mode);
autocal_mode=0*active_rf; % Autocalibration is only needed the first time we conf. exmimo
......
......@@ -97,40 +97,40 @@ if(paramsinitialized && LSBSWITCH_FLAG)
endif
chanestsB2A=reshape(diag(repmat(Db2a_T,Niter,1)'*repmat(Db2a_R,1,Nantb)/(Niter*120)),301,Nantb);
# %% -- Some plotting code -- %% (you can uncomment what you see fit)
# clf
# figure(1)
# for i=1:4
# subplot(220+i);plot(20*log10(abs(fftshift(fft(receivedA2B(:,i))))));
# endfor
%% -- Some plotting code -- %% (you can uncomment what you see fit)
clf
figure(1)
for i=1:4
subplot(220+i);plot(20*log10(abs(fftshift(fft(receivedA2B(:,i))))));
endfor
# figure(2)
# t=[0:512-1]/512*1e-2;
# plot(t,abs(tchanests))
# xlabel('time')
# ylabel('|h|')
# figure(3)
# % wndw = 50;
# % for i=1:5:Nantb*301 %# sliding window size
# % phamean = filter(ones(wndw,1)/wndw, 1, phases(:,i)); %# moving average
# % plot(phamean(wndw:end),'LineWidth',2);
# % title(['subcarrier ' num2str(i)]);
# % xlabel('time')
# % ylabel('phase')
# % ylim([-pi pi])
# % drawnow;
# % pause(0.1)
# % endfor
# phavar=var(phases);
# plotphavar=[];
# for i=0:Nantb-1
# plotphavar=[plotphavar; phavar([1:301]+i*301)];
# endfor
# plot([1:150 362:512],plotphavar,'o');
# %ylim([0 pi])
# xlabel('subcarrier')
# ylabel('phase variance')
figure(2)
t=[0:512-1]/512*1e-2;
plot(t,abs(tchanestsA2B))
xlabel('time')
ylabel('|h|')
figure(3)
wndw = 50;
for i=1:5:Nantb*301 %# sliding window size
phamean = filter(ones(wndw,1)/wndw, 1, phasesA2B(:,i)); %# moving average
plot(phamean(wndw:end),'LineWidth',2);
title(['subcarrier ' num2str(i)]);
xlabel('time')
ylabel('phase')
ylim([-pi pi])
drawnow;
pause(0.1)
endfor
phavar=var(phasesA2B);
plotphavar=[];
for i=0:Nantb-1
plotphavar=[plotphavar; phavar([1:301]+i*301)];
endfor
plot([1:150 362:512],plotphavar,'o');
%ylim([0 pi])
xlabel('subcarrier')
ylabel('phase variance')
# figure(4)
......
# % Author: Mirsad Cirkic
# % Author: Mirsad Cirkic, Florian Kaltenberger
# % Organisation: Eurecom (and Linkoping University)
# % E-mail: mirsad.cirkic@liu.se
......@@ -14,11 +14,14 @@ if(paramsinitialized && ~LSBSWITCH_FLAG)
indB=find(active_rfB==1);
Nanta=length(indA);
Nantb=length(indB);
if(Nanta!=1) error("Node A can only have one antenna active\n"); endif
if(Nanta!=1)
error("Node A can only have one antenna active\n");
endif
Niter=1;
if(Niter!=1) error("We should only use one get_frame at each \
run.\n");
if(Niter!=1)
error("We should only use one get_frame at each run.\n");
endif
Nmeas = 10;
# %% ------- Prepare the signals for A2B ---------- %%
signalA2B=zeros(N,4);
......@@ -33,7 +36,7 @@ if(paramsinitialized && ~LSBSWITCH_FLAG)
if(length(indA)> ia) ia=ia+1; endif
endif
% if(indB(ib)==i)
% This part could be improved by creating fully orthogonal sequences
% % This part could be improved by creating fully orthogonal sequences
% [tmpd, tmps]=genrandpskseq(N,M,amp);
% signalB2A(:,i)=tmps*2;
% signalA2B(:,i)=repmat(1+1j,76800,1);
......@@ -41,6 +44,7 @@ if(paramsinitialized && ~LSBSWITCH_FLAG)
% if(length(indB)> ib) ib=ib+1; endif
% endif
endfor
#%%------------Prepare the signals for B2A---------------%%
for i=1:4
if(indB(ib)==i)
......@@ -52,27 +56,30 @@ if(paramsinitialized && ~LSBSWITCH_FLAG)
endif
endfor
signalB2Asend=signalB2A;
signalB2Asend(1:38400,3)=0;
signalB2Asend(38401:end,2)=0;
receivedA2B = zeros(76800*Niter,4);
receivedB2A = zeros(76800*Niter,4);
for meas=1:Nmeas
# %% ------- Node A to B transmission ------- %%
rf_mode_current = rf_mode; % + (DMAMODE_TX+TXEN)*active_rfA +(DMAMODE_RX+RXEN)*active_rfB;
oarf_config_exmimo(card,freq_rx,freq_tx,tdd_config,syncmode,rx_gain,tx_gain,eNB_flag,rf_mode_current,rf_rxdc,rf_local,rf_vcocal,rffe_rxg_low,rffe_rxg_final,rffe_band,autocal_mode);
oarf_send_frame(card,signalA2B,n_bit);
%keyboard
sleep(0.01);
%receivedA2B((meas-1)*76800+1:meas*76800,:)=oarf_get_frame(card);
receivedA2B=oarf_get_frame(card);
oarf_stop(card);
%oarf_stop(card); %not good, since it does a reset
#%%----------Node B to A transmission---------%%
rf_mode_current = rf_mode; % + (DMAMODE_TX+TXEN)*active_rfB +(DMAMODE_RX+RXEN)*active_rfA;
oarf_config_exmimo (card,freq_rx,freq_tx,tdd_config,syncmode,rx_gain,tx_gain,eNB_flag,rf_mode_current,rf_rxdc,rf_local,rf_vcocal,rffe_rxg_low,rffe_rxg_final,rffe_band,autocal_mode);
signalB2Asend=signalB2A;
signalB2Asend(1:38400,3)=0;
signalB2Asend(38401:end,2)=0;
oarf_send_frame(card,signalB2Asend,n_bit);
%oarf_send_frame(card,signalB2A,n_bit);
%keyboard
sleep(0.01);
%receivedB2A((meas-1)*76800+1:meas*76800,:)=oarf_get_frame(card);
receivedB2A=oarf_get_frame(card);
oarf_stop(card);
%oarf_stop(card); %not good, since it does a reset
# %% ------- Do the A to B channel estimation ------- %%
Da2b_R=zeros(Niter*120,Nantb*301);
......@@ -84,23 +91,21 @@ if(paramsinitialized && ~LSBSWITCH_FLAG)
fblock(151:360,:)=[];
Da2b_R((Niter-1)*120+i+1,:)=vec(fblock);
endfor
HA2B=repmat(conj(Da2b_T),1,Nantb).*Da2b_R;
HA2B=repmat(conj(Da2b_T),Niter,Nantb).*Da2b_R;
phasesA2B=unwrap(angle(HA2B));
if(mean(var(phasesA2B))>0.5)
disp("The phases of your estimates from A to B are a bit high (larger than 0.5 rad.), something is wrong.");
endif
% keyboard
chanestsA2B=reshape(diag(repmat(Da2b_T,1,Nantb)'*Da2b_R)/size(Da2b_T,1),301,Nantb);
fchanestsA2B=zeros(512,Nantb);
for i=1:Nantb
fchanestsA2B(:,i)=[0; chanestsA2B([1:150],i); zeros(210,1); chanestsA2B(151:301,i)];
endfor
tchanestsA2B=ifft(fchanestsA2B);
chanestsA2B(:,:,meas)=reshape(diag(repmat(Da2b_T,Niter,Nantb)'*Da2b_R)/size(Da2b_T,1),301,Nantb);
#fchanestsA2B=zeros(512,Nantb);
#for i=1:Nantb
# fchanestsA2B(:,i)=[0; chanestsA2B([1:150],i,meas); zeros(210,1); chanestsA2B(151:301,i,meas)];
#endfor
tchanestsA2B(:,:,meas)=ifft([zeros(1,Nantb); chanestsA2B([1:150],:,meas); zeros(210,Nantb); chanestsA2B(151:301,:,meas)]);
%% ------- Do the B to A channel estimation ------- %%
Db2a_T(1:60,302:end) = 0;
Db2a_T(61:end,1:301) = 0;
Db2a_T(1:60,302:end) = 0;
Db2a_T(61:end,1:301) = 0;
Db2a_R=zeros(Niter*120,Nanta*301);
for i=0:119;
ifblock=receivedB2A(i*640+[1:640],indA);
......@@ -115,56 +120,58 @@ Db2a_T(61:end,1:301) = 0;
if(mean(var(phasesB2A))>0.5)
disp("The phases of your estimates from B to A are a bit high (larger than 0.5 rad.), something is wrong.");
endif
chanestsB2A=reshape(diag(repmat(Db2a_T,Niter,1)'*repmat(Db2a_R,1,Nantb)/(Niter*60)),301,Nantb);
# %% -- Some plotting code -- %% (you can uncomment what you see fit)
# clf
# figure(1)
# for i=1:4
# subplot(220+i);plot(20*log10(abs(fftshift(fft(receivedA2B(:,i))))));
# endfor
# figure(2)
# t=[0:512-1]/512*1e-2;
# plot(t,abs(tchanests))
# xlabel('time')
# ylabel('|h|')
# figure(3)
# % wndw = 50;
# % for i=1:5:Nantb*301 %# sliding window size
# % phamean = filter(ones(wndw,1)/wndw, 1, phases(:,i)); %# moving average
# % plot(phamean(wndw:end),'LineWidth',2);
# % title(['subcarrier ' num2str(i)]);
# % xlabel('time')
# % ylabel('phase')
# % ylim([-pi pi])
# % drawnow;
# % pause(0.1)
# % endfor
# phavar=var(phases);
# plotphavar=[];
# for i=0:Nantb-1
# plotphavar=[plotphavar; phavar([1:301]+i*301)];
# endfor
# plot([1:150 362:512],plotphavar,'o');
# %ylim([0 pi])
# xlabel('subcarrier')
# ylabel('phase variance')
# figure(4)
# plot(20*log10(abs(fchanests))), ylim([40 100])
# %end
# fprintf(' done\n')
# for i=0:(Nantb-1)
# fchanests(:,i+1)=[0; chanests(301*i+[1:150]); zeros(210,1); chanests(301*i+[151:301])];
# endfor
# tchanests=ifft(fchanests);
chanestsB2A(:,:,meas)=reshape(diag(repmat(Db2a_T,Niter,1)'*repmat(Db2a_R,1,Nantb)/(Niter*60)),301,Nantb);
#fchanestsB2A=zeros(512,Nantb);
#for i=1:Nantb
# fchanestsB2A(:,i)=[0; chanestsB2A([1:150],i); zeros(210,1); chanestsB2A(151:301,i)];
#endfor
tchanestsB2A(:,:,meas)=ifft([zeros(1,Nantb); chanestsB2A([1:150],:,meas); zeros(210,Nantb); chanestsB2A(151:301,:,meas)]);
end
%% -- Some plotting code -- %% (you can uncomment what you see fit)
received = receivedB2A;
phases = phasesB2A;
tchanests = tchanestsB2A(:,:,end);
fchanests = fchanestsB2A(:,:,end);
clf
figure(1)
for i=1:4
subplot(220+i);plot(20*log10(abs(fftshift(fft(received(:,i))))));
endfor
figure(2)
t=[0:512-1]/512*1e-2;
plot(t,abs(tchanests))
xlabel('time')
ylabel('|h|')
figure(4)
plot(20*log10(abs(fchanests))), ylim([40 100])
if (0)
figure(3)
wndw = 50;
for i=1:5:Nantb*301 %# sliding window size
phamean = filter(ones(wndw,1)/wndw, 1, phases(:,i)); %# moving average
plot(phamean(wndw:end),'LineWidth',2);
title(['subcarrier ' num2str(i)]);
xlabel('time')
ylabel('phase')
ylim([-pi pi])
drawnow;
pause(0.1)
endfor
phavar=var(phases);
plotphavar=[];
for i=0:Nantb-1
plotphavar=[plotphavar; phavar([1:301]+i*301)];
endfor
plot([1:150 362:512],plotphavar,'o');
%ylim([0 pi])
xlabel('subcarrier')
ylabel('phase variance')
end
else
if(LSBSWITCH_FLAG) error("You have to unset the LSB switch flag (LSBSWITCH_FLAG) in initparams.m.\n")
......
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