diff --git a/targets/PROJECTS/TDDREC/runmeas_long_chanest.m b/targets/PROJECTS/TDDREC/runmeas_long_chanest.m
index 10c1810b5e2a2c31c9995ed0419229bbf83919f2..aa0f39271cc6197d95c145f722bedf94e68f4ed2 100644
--- a/targets/PROJECTS/TDDREC/runmeas_long_chanest.m
+++ b/targets/PROJECTS/TDDREC/runmeas_long_chanest.m
@@ -1,203 +1,204 @@
-# % 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;
- Ntaps=8;
- 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,Nmeas);
- signalB2A=zeros(N,4,Nmeas);
- Db2a_T=[];
- for meas=1:Nmeas
- ia=1; ib=1;
- Dtmp=[];
+ 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;
+ Ntaps=8;
+ 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,Nmeas);
+ signalB2A=zeros(N,4,Nmeas);
+ Db2a_T=[];
+ for meas=1:Nmeas
+ ia=1; ib=1;
+ Dtmp=[];
+ for i=1:4
+ if(indA(ia)==i)
+ [tmpd, tmps]=genrandpskseq(N,M,amp);
+ signalA2B(:,i,meas)=tmps; %make sure LSB is 0 (switch=tx)
+ Dtmp=[Dtmp tmpd];
+ 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
+ Da2b_T=[Da2b_T; Dtmp];
+
+ %%------------Prepare the signals for B2A---------------%%
+ Dtmp=[];
+ for i=1:4
+ if(indB(ib)==i)
+ [tmpd, tmps]=genrandpskseq(N,M,amp);
+ signalB2A(:,i,meas)=tmps*2; %make sure LSB is 0 (switch=tx)
+ signalA2B(:,i,meas)=repmat(1+1j,76800,1); %make sure LSB is 1 (switch=rx)
+ Dtmp=[Dtmp tmpd];
+ if(length(indB)> ib) ib=ib+1; end
+ end
+ end
+ Db2a_T=[Db2a_T; Dtmp];
+ end
+
+ Da2b_R=zeros(Nmeas*120,Nantb*301);
+ Db2a_R=zeros(Nmeas*120,Nanta*301);
+
+ for meas=1:Nmeas
+ %% ------- Node A to B transmission ------- %%
+ oarf_send_frame(card,squeeze(signalA2B(:,:,meas)),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,squeeze(signalB2A(:,:,meas)),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 signal post preparation ------- %%
+ for i=0:119;
+ ifblock=receivedA2B(i*640+[1:640],indB);
+ ifblock(1:128,:)=[];
+ fblock=fft(ifblock);
+ fblock(1,:)=[];
+ fblock(151:360,:)=[];
+ Da2b_R((meas-1)*120+i+1,:)=vec(fblock);
+ end
+
+
+ %% ------- Do the B to A signal post preparation ------- %%
+ for i=0:119;
+ ifblock=receivedB2A(i*640+[1:640],indA);
+ ifblock(1:128,:)=[];
+ fblock=fft(ifblock);
+ fblock(1,:)=[];
+ fblock(151:360,:)=[];
+ Db2a_R((meas-1)*120+i+1,:)=fblock.';
+ end
+ end
+
+ %% ------- Do the A to B channel estimation ------- %%
+ HA2B=repmat(conj(Da2b_T),1,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.');
+ end
+ DA2B=repmat(Da2b_T,1,Nantb);
+ chanestsA2B=reshape(diag(DA2B'*Da2b_R)./diag(DA2B'*DA2B),301,Nantb);
+ fchanestsA2B=[zeros(1,Nantb); chanestsA2B([1:150],:); zeros(210,Nantb); chanestsA2B(151:301,:)];
+ tchanestsA2B=ifft(fchanestsA2B);
+
+ %% ------- Do the B to A channel estimation ------- %%
+ HB2A=conj(Db2a_T.*repmat(Db2a_R,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=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);
+ chanestsB2A(ci,:)=(inv(data'*data)*data'*rec).';
+ end
+ else
+ chanestsB2A=reshape(diag(Db2a_T'*repmat(Db2a_R,1,Nantb)/(Nmeas*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 = [zeros(1,Nantb); chanestsB2A([1:150],:); zeros(210,Nantb); chanestsB2A(151:301,:)];
+ tchanestsB2A=ifft(fchanestsB2A);
+
+ % save *chanests*
+ % save DA2B_T DA2B_R DB2A_T DB2A_R in seperate file
+
+
+ %% -- 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
- if(indA(ia)==i)
- [tmpd, tmps]=genrandpskseq(N,M,amp);
- signalA2B(:,i,meas)=tmps; %make sure LSB is 0 (switch=tx)
- Dtmp=[Dtmp tmpd];
- 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
- Da2b_T=[Da2b_T; Dtmp];
-
-#%%------------Prepare the signals for B2A---------------%%
- Dtmp=[];
- for i=1:4
- if(indB(ib)==i)
- [tmpd, tmps]=genrandpskseq(N,M,amp);
- signalB2A(:,i,meas)=tmps*2; %make sure LSB is 0 (switch=tx)
- signalA2B(:,i,meas)=repmat(1+1j,76800,1); %make sure LSB is 1 (switch=rx)
- Dtmp=[Dtmp tmpd];
- if(length(indB)> ib) ib=ib+1; endif
- endif
- endfor
- Db2a_T=[Db2a_T; Dtmp];
- endfor
-
- Da2b_R=zeros(Nmeas*120,Nantb*301);
- Db2a_R=zeros(Nmeas*120,Nanta*301);
-
-for meas=1:Nmeas
-# %% ------- Node A to B transmission ------- %%
- oarf_send_frame(card,squeeze(signalA2B(:,:,meas)),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,squeeze(signalB2A(:,:,meas)),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 signal post preparation ------- %%
- for i=0:119;
- ifblock=receivedA2B(i*640+[1:640],indB);
- ifblock(1:128,:)=[];
- fblock=fft(ifblock);
- fblock(1,:)=[];
- fblock(151:360,:)=[];
- Da2b_R((meas-1)*120+i+1,:)=vec(fblock);
- endfor
-
-
-%% ------- Do the B to A signal post preparation ------- %%
- for i=0:119;
- ifblock=receivedB2A(i*640+[1:640],indA);
- ifblock(1:128,:)=[];
- fblock=fft(ifblock);
- fblock(1,:)=[];
- fblock(151:360,:)=[];
- Db2a_R((meas-1)*120+i+1,:)=fblock.';
- endfor
-endfor
-
-# %% ------- Do the A to B channel estimation ------- %%
- HA2B=repmat(conj(Da2b_T),1,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
- DA2B=repmat(Da2b_T,1,Nantb);
- chanestsA2B=reshape(diag(DA2B'*Da2b_R)./diag(DA2B'*DA2B),301,Nantb);
- fchanestsA2B=[zeros(1,Nantb); chanestsA2B([1:150],:); zeros(210,Nantb); chanestsA2B(151:301,:)];
- tchanestsA2B=ifft(fchanestsA2B);
-
-# %% ------- Do the B to A channel estimation ------- %%
- HB2A=conj(Db2a_T.*repmat(Db2a_R,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=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);
- chanestsB2A(ci,:)=(inv(data'*data)*data'*rec).';
- endfor
- else
- chanestsB2A=reshape(diag(Db2a_T'*repmat(Db2a_R,1,Nantb)/(Nmeas*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 = [zeros(1,Nantb); chanestsB2A([1:150],:); zeros(210,Nantb); chanestsB2A(151:301,:)];
- tchanestsB2A=ifft(fchanestsB2A);
-
-
-
-
- %% -- 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)]);
+ 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
+
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