From 0f333f9db8d8ade4a28900640bae3c43cd0c5230 Mon Sep 17 00:00:00 2001
From: Florian Kaltenberger <florian.kaltenberger@eurecom.fr>
Date: Tue, 12 Nov 2013 14:19:24 +0000
Subject: [PATCH] git-svn-id: http://svn.eurecom.fr/openair4G/trunk@4368
818b1a75-f10b-46b9-bf7c-635c3b92a50f
---
targets/PROJECTS/TDDREC/runmeas_full_duplex.m | 407 +++++++++---------
1 file changed, 213 insertions(+), 194 deletions(-)
diff --git a/targets/PROJECTS/TDDREC/runmeas_full_duplex.m b/targets/PROJECTS/TDDREC/runmeas_full_duplex.m
index 1ac5e39890..54b26d15a4 100644
--- a/targets/PROJECTS/TDDREC/runmeas_full_duplex.m
+++ b/targets/PROJECTS/TDDREC/runmeas_full_duplex.m
@@ -1,198 +1,217 @@
-# % Author: Mirsad Cirkic, Florian Kaltenberger
-# % Organisation: Eurecom (and Linkoping University)
-# % E-mail: mirsad.cirkic@liu.se
+% Author: Mirsad Cirkic, Florian Kaltenberger
+% Organisation: Eurecom (and Linkoping University)
+% E-mail: mirsad.cirkic@liu.se
if(paramsinitialized && ~LSBSWITCH_FLAG)
- disp(["\n\n------------\nThis code is, so far, only written for single runs. Multiple " ...
- "runs will overwrite the previous measurement data, i.e., the " ...
- "data structures are not defined for multiple runs. You will need to " ...
- "add code in order to save the intermediate measurements and the " ...
- "corresponding timestamps.\n------------"])
- N=76800;
- M=4;
- indA=find(active_rfA==1);
- 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
- Niter=1;
- 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);
- signalB2A=zeros(N,4);
- ia=1; ib=1;
- Db2a_T=[];
- for i=1:4
- if(indA(ia)==i)
- [Da2b_T, tmps]=genrandpskseq(N,M,amp);
- signalA2B(:,i)=tmps*2; %make sure LSB is 0 (switch=tx)
- signalB2A(:,i)=repmat(1+1j,76800,1); %make sure LSB is 1 (switch=rx)
- if(length(indA)> ia) ia=ia+1; endif
- endif
- % if(indB(ib)==i)
- % % 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);
- % Db2a_T=[Db2a_T tmpd];
- % if(length(indB)> ib) ib=ib+1; endif
- % endif
- endfor
-
-#%%------------Prepare the signals for B2A---------------%%
- for i=1:4
- if(indB(ib)==i)
- [tmpd, tmps]=genrandpskseq(N,M,amp);
- signalB2A(:,i)=tmps*2; %make sure LSB is 0 (switch=tx)
- signalA2B(:,i)=repmat(1+1j,76800,1); %make sure LSB is 1 (switch=rx)
- Db2a_T=[Db2a_T tmpd];
- if(length(indB)> ib) ib=ib+1; endif
- endif
- endfor
-
- if (!chanest_full)
- signalB2A(1:38400,3)=0;
- signalB2A(38401:end,2)=0;
- Db2a_T(1:60,302:end) = 0;
- Db2a_T(61:end,1:301) = 0;
- end
-
- Da2b_R=zeros(Niter*120,Nantb*301,Nmeas);
- Db2a_R=zeros(Niter*120,Nanta*301,Nmeas);
-
-for meas=1:Nmeas
-# %% ------- Node A to B transmission ------- %%
- oarf_send_frame(card,signalA2B,n_bit);
- %keyboard
- sleep(0.01);
- receivedA2B=oarf_get_frame(card);
- %oarf_stop(card); %not good, since it does a reset
- sleep(0.01);
-
-#%%----------Node B to A transmission---------%%
- oarf_send_frame(card,signalB2A,n_bit);
- %keyboard
- sleep(0.01);
- receivedB2A=oarf_get_frame(card);
- %oarf_stop(card); %not good, since it does a reset
-
-# %% ------- Do the A to B channel estimation ------- %%
- for i=0:119;
- ifblock=receivedA2B(i*640+[1:640],indB);
- ifblock(1:128,:)=[];
- fblock=fft(ifblock);
- fblock(1,:)=[];
- fblock(151:360,:)=[];
- Da2b_R((Niter-1)*120+i+1,:,meas)=vec(fblock);
- endfor
- HA2B=repmat(conj(Da2b_T),Niter,Nantb).*Da2b_R(:,:,meas);
- 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
- chanestsA2B(:,:,meas)=reshape(diag(repmat(Da2b_T,Niter,Nantb)'*Da2b_R(:,:,meas))/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
- fchanestsA2B(:,:,meas)=[zeros(1,Nantb); chanestsA2B([1:150],:,meas); zeros(210,Nantb); chanestsA2B(151:301,:,meas)];
- tchanestsA2B(:,:,meas)=ifft(fchanestsA2B(:,:,meas));
-
-%% ------- Do the B to A channel estimation ------- %%
- for i=0:119;
- ifblock=receivedB2A(i*640+[1:640],indA);
- ifblock(1:128,:)=[];
- fblock=fft(ifblock);
- fblock(1,:)=[];
- fblock(151:360,:)=[];
- Db2a_R((Niter-1)*120+i+1,:,meas)=fblock.';
- endfor
- HB2A=conj(repmat(Db2a_T,Niter,1)).*repmat(Db2a_R(:,:,meas),1,Nantb);
- phasesB2A=unwrap(angle(HB2A));
- 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
-
- if (chanest_full)
- chanestsB2A(:,:,meas)=zeros(301,Nantb);
- inds=repmat([1:Nantb]',1,301);
- for ci=1:301;
- data=Db2a_T(:,ci+[0:Nantb-1]*301);
- rec=Db2a_R(:,ci,meas);
- chanestsB2A(ci,:,meas)=(inv(data'*data)*data'*rec).';
- endfor
- else
- chanestsB2A(:,:,meas)=reshape(diag(repmat(Db2a_T,Niter,1)'*repmat(Db2a_R(:,:,meas),1,Nantb)/(Niter*60)),301,Nantb);
- end
-
- #fchanestsB2A=zeros(512,Nantb);
- #for i=1:Nantb
- # fchanestsB2A(:,i)=[0; chanestsB2A([1:150],i); zeros(210,1); chanestsB2A(151:301,i)];
- #endfor
- fchanestsB2A(:,:,meas) = [zeros(1,Nantb); chanestsB2A([1:150],:,meas); zeros(210,Nantb); chanestsB2A(151:301,:,meas)];
- tchanestsB2A(:,:,meas)=ifft(fchanestsB2A(:,:,meas));
-end
-
- %% -- Some plotting code -- %% (you can uncomment what you see fit)
- received = receivedB2A;
- phases = phasesB2A;
- tchanests = [tchanestsA2B(:,:,end), tchanestsB2A(:,:,end)];
- fchanests = [fchanestsA2B(:,:,end), 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,20*log10(abs(tchanests)))
- xlabel('time')
- ylabel('|h|')
- legend('A->B1','A->B2','A->B3','B1->A','B2->A','B3->A');
- %legend('A->B1','A->B2','B1->A','B2->A');
-
- figure(4)
- plot(20*log10(abs(fchanests)));
- ylim([40 100])
- xlabel('freq')
- ylabel('|h|')
- legend('A->B1','A->B2','A->B3','B1->A','B2->A','B3->A');
- %legend('A->B1','A->B2','B1->A','B2->A');
-
- 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)]);
+ disp(['\n\n------------\nThis code is, so far, only written for single runs. Multiple ' ...
+ 'runs will overwrite the previous measurement data, i.e., the ' ...
+ 'data structures are not defined for multiple runs. You will need to ' ...
+ 'add code in order to save the intermediate measurements and the ' ...
+ 'corresponding timestamps.\n------------'])
+ N=76800;
+ M=4;
+ indA=find(active_rfA==1);
+ indB=find(active_rfB==1);
+ Nanta=length(indA);
+ Nantb=length(indB);
+ if(Nanta~=1)
+ error('Node A can only have one antenna active\n');
+ end
+ Niter=1;
+ if(Niter~=1)
+ error('We should only use one get_frame at each run.\n');
+ end
+ Nmeas = 10;
+
+ %% ------- Prepare the signals for A2B ---------- %%
+ signalA2B=zeros(N,4);
+ signalB2A=zeros(N,4);
+ ia=1; ib=1;
+ Db2a_T=[];
+ for i=1:4
+ if(indA(ia)==i)
+ [Da2b_T, tmps]=genrandpskseq(N,M,amp);
+ signalA2B(:,i)=tmps*2; %make sure LSB is 0 (switch=tx)
+ signalB2A(:,i)=repmat(1+1j,76800,1); %make sure LSB is 1 (switch=rx)
+ if(length(indA)> ia) ia=ia+1; end
+ end
+ % if(indB(ib)==i)
+ % % 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);
+ % Db2a_T=[Db2a_T tmpd];
+ % if(length(indB)> ib) ib=ib+1; end
+ % end
+ end
+
+ %%------------Prepare the signals for B2A---------------%%
+ for i=1:4
+ if(indB(ib)==i)
+ [tmpd, tmps]=genrandpskseq(N,M,amp);
+ signalB2A(:,i)=tmps*2; %make sure LSB is 0 (switch=tx)
+ signalA2B(:,i)=repmat(1+1j,76800,1); %make sure LSB is 1 (switch=rx)
+ Db2a_T=[Db2a_T tmpd];
+ if(length(indB)> ib) ib=ib+1; end
+ end
+ end
+
+ if (~chanest_full)
+ signalB2A(1:38400,3)=0;
+ signalB2A(38401:end,2)=0;
+ Db2a_T(1:60,302:end) = 0;
+ Db2a_T(61:end,1:301) = 0;
+ end
+
+ Da2b_R=zeros(Niter*120,Nantb*301,Nmeas);
+ Db2a_R=zeros(Niter*120,Nanta*301,Nmeas);
+
+ for meas=1:Nmeas
+ %% ------- Node A to B transmission ------- %%
+ oarf_send_frame(card,signalA2B,n_bit);
+ %keyboard
+ sleep(0.01);
+ receivedA2B=oarf_get_frame(card);
+ %oarf_stop(card); %not good, since it does a reset
+ sleep(0.01);
+
+ %%----------Node B to A transmission---------%%
+ oarf_send_frame(card,signalB2A,n_bit);
+ %keyboard
+ sleep(0.01);
+ receivedB2A=oarf_get_frame(card);
+ %oarf_stop(card); %not good, since it does a reset
+
+ %% ------- Do the A to B channel estimation ------- %%
+ for i=0:119;
+ ifblock=receivedA2B(i*640+[1:640],indB);
+ ifblock(1:128,:)=[];
+ fblock=fft(ifblock);
+ fblock(1,:)=[];
+ fblock(151:360,:)=[];
+ Da2b_R((Niter-1)*120+i+1,:,meas)=vec(fblock);
+ end
+ HA2B=repmat(conj(Da2b_T),Niter,Nantb).*Da2b_R(:,:,meas);
+ 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.');
+ end
+ chanestsA2B(:,:,meas)=reshape(diag(repmat(Da2b_T,Niter,Nantb)'*Da2b_R(:,:,meas))/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)];
+ %end
+ fchanestsA2B(:,:,meas)=[zeros(1,Nantb); chanestsA2B([1:150],:,meas); zeros(210,Nantb); chanestsA2B(151:301,:,meas)];
+ tchanestsA2B(:,:,meas)=ifft(fchanestsA2B(:,:,meas));
+
+ %% ------- Do the B to A channel estimation ------- %%
+ for i=0:119;
+ ifblock=receivedB2A(i*640+[1:640],indA);
+ ifblock(1:128,:)=[];
+ fblock=fft(ifblock);
+ fblock(1,:)=[];
+ fblock(151:360,:)=[];
+ Db2a_R((Niter-1)*120+i+1,:,meas)=fblock.';
+ end
+ HB2A=conj(repmat(Db2a_T,Niter,1)).*repmat(Db2a_R(:,:,meas),1,Nantb);
+ phasesB2A=unwrap(angle(HB2A));
+ 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.');
+ end
+
+ if (chanest_full)
+ chanestsB2A(:,:,meas)=zeros(301,Nantb);
+ inds=repmat([1:Nantb]',1,301);
+ for ci=1:301;
+ data=Db2a_T(:,ci+[0:Nantb-1]*301);
+ rec=Db2a_R(:,ci,meas);
+ chanestsB2A(ci,:,meas)=(inv(data'*data)*data'*rec).';
+ end
+ else
+ chanestsB2A(:,:,meas)=reshape(diag(repmat(Db2a_T,Niter,1)'*repmat(Db2a_R(:,:,meas),1,Nantb)/(Niter*60)),301,Nantb);
+ end
+
+ %fchanestsB2A=zeros(512,Nantb);
+ %for i=1:Nantb
+ % fchanestsB2A(:,i)=[0; chanestsB2A([1:150],i); zeros(210,1); chanestsB2A(151:301,i)];
+ %end
+ fchanestsB2A(:,:,meas) = [zeros(1,Nantb); chanestsB2A([1:150],:,meas); zeros(210,Nantb); chanestsB2A(151:301,:,meas)];
+ tchanestsB2A(:,:,meas)=ifft(fchanestsB2A(:,:,meas));
+ end
+
+ %% -- Some plotting code -- %% (you can uncomment what you see fit)
+ received = receivedB2A;
+ phases = phasesB2A;
+ tchanests = [tchanestsA2B(:,:,end), tchanestsB2A(:,:,end)];
+ fchanests = [fchanestsA2B(:,:,end), fchanestsB2A(:,:,end)];
+
+ clf
+ figure(1)
+ for i=1:4
+ subplot(220+i);plot(20*log10(abs(fftshift(fft(received(:,i))))));
+ end
+
+ figure(2)
+ t=[0:512-1]/512*1e-2;
+ plot(t,20*log10(abs(tchanests)))
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
-
+ ylabel('|h|')
+ legend('A->B1','A->B2','A->B3','B1->A','B2->A','B3->A');
+ %legend('A->B1','A->B2','B1->A','B2->A');
+
+ figure(4)
+ plot(20*log10(abs(fchanests)));
+ ylim([40 100])
+ xlabel('freq')
+ ylabel('|h|')
+ legend('A->B1','A->B2','A->B3','B1->A','B2->A','B3->A');
+ %legend('A->B1','A->B2','B1->A','B2->A');
+
+ 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)
+ end
+ phavar=var(phases);
+ plotphavar=[];
+ for i=0:Nantb-1
+ plotphavar=[plotphavar; phavar([1:301]+i*301)];
+ end
+ plot([1:150 362:512],plotphavar,'o');
+ %ylim([0 pi])
+ xlabel('subcarrier')
+ ylabel('phase variance')
+ end
+
+
+ %% estimate F matrix assuming it is diagonal for sanity checking
+ Fhatloc = zeros(Nmeas,301,Nantb);
+ for t=1:Nmeas
+ for s=1:301
+ ya=chanestsB2A(s,:,t);
+ yb=chanestsA2B(s,:,t);
+ Fhatloc(t,s,:)=(yb.*conj(ya))./(ya.*conj(ya));
+ end
+ end
+
+ figure(5)
+ plot_style={'rx','bo','gs'};
+ hold off
+ for n=1:Nantb
+ plot((squeeze(Fhatloc(:,:,n))),plot_style{n})
+ hold on
+ end
+
else
- if(LSBSWITCH_FLAG) error("You have to unset the LSB switch flag (LSBSWITCH_FLAG) in initparams.m.\n")
- else error("You have to run init.params.m first!")
- endif
-endif
+ if(LSBSWITCH_FLAG) error('You have to unset the LSB switch flag (LSBSWITCH_FLAG) in initparams.m.\n')
+ else error('You have to run init.params.m first!')
+ end
+end
--
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