guibene
84fb51d88c
git-svn-id: http://svn.eurecom.fr/openair4G/trunk@4306 818b1a75-f10b-46b9-bf7c-635c3b92a50f
183 lines
6.6 KiB
Matlab
183 lines
6.6 KiB
Matlab
close all
|
|
clear all
|
|
hold off
|
|
|
|
gpib_card=0; % first GPIB PCI card in the computer
|
|
gpib_device=28; % this is configured in the signal generator Utilities->System->GPIB->Address menu
|
|
|
|
fc = 1907600e3;
|
|
|
|
fs = 7680e3;
|
|
fref = fc+fs/4;
|
|
|
|
power_dBm = -70;
|
|
cables_loss_dB = 6; % we need to account for the power loss between the signal generator and the card input (splitter, cables)
|
|
|
|
dual_tx = 0;
|
|
tdd = 1;
|
|
card = 0;
|
|
limeparms;
|
|
%rf_mode = (RXEN+TXEN+TXLPFNORM+TXLPFEN+TXLPF25+RXLPFNORM+RXLPFEN+RXLPF25+LNA1ON+LNAMax+RFBBNORM+DMAMODE_RX+DMAMODE_TX)*[1 1 1 1];
|
|
rf_mode1 = (RXEN+0+TXLPFNORM+TXLPFEN+TXLPF25+RXLPFNORM+RXLPFEN+RXLPF25+LNA1ON+LNAMax+RFBBNORM+DMAMODE_RX+0);
|
|
rf_mode2 = (RXEN+0+TXLPFNORM+TXLPFEN+TXLPF25+RXLPFNORM+RXLPFEN+RXLPF25+LNA2ON+LNAMax+RFBBNORM+DMAMODE_RX+0);
|
|
rf_mode = [rf_mode1 rf_mode2 0 0];
|
|
freq_rx = 1907600000*[1 1 1 1];
|
|
freq_tx = freq_rx;
|
|
tx_gain = 25*[1 1 1 1];
|
|
rx_gain = 15*[1 1 1 1];
|
|
%rf_local= [8254744 8255063 8257340 8257340]; %rf_local*[1 1 1 1];
|
|
rf_local = [8254813 8255016 8254813 8254813]; %exmimo2_2
|
|
%rf_rxdc = rf_rxdc*[1 1 1 1];
|
|
%rf_rxdc = ((128+rxdc_I) + (128+rxdc_Q)*(2^8))*[1 1 1 1];
|
|
rf_rxdc = [37059 35459 36300 36999]; %exmimo2_2
|
|
rf_rxdc = [34689 34756 36300 36999]; %exmimo2_2 with external RF
|
|
rf_vcocal=rf_vcocal_19G*[1 1 1 1];
|
|
eNBflag = 0;
|
|
tdd_config = DUPLEXMODE_FDD + TXRXSWITCH_LSB;
|
|
syncmode = SYNCMODE_FREE;
|
|
rffe_rxg_low = 31*[1 1 1 1];
|
|
rffe_rxg_final = 31*[1 1 1 1];
|
|
rffe_band = B19G_TDD*[1 1 1 1];
|
|
|
|
|
|
gpib_send(gpib_card,gpib_device,'*RST;*CLS'); % reset and configure the signal generator
|
|
%gpib_send(gpib_card,gpib_device,sprintf("POW %ddBm",power_dBm+cables_loss_dB));
|
|
gpib_send(gpib_card,gpib_device,sprintf("POW %ddBm",-14));
|
|
%gpib_send(gpib_card,gpib_device,'FREQ 1.91860GHz');
|
|
%gpib_send(gpib_card,gpib_device,'FREQ 1.919225GHz');
|
|
%gpib_send(gpib_card,gpib_device,'FREQ 1.909225GHz');
|
|
gpib_send(gpib_card,gpib_device,sprintf("FREQ %dHz",fref));
|
|
|
|
oarf_config_exmimo(card,freq_rx,freq_tx,tdd_config,syncmode,rx_gain,tx_gain,eNBflag,rf_mode,rf_rxdc,rf_local,rf_vcocal,rffe_rxg_low,rffe_rxg_final,rffe_band);
|
|
|
|
%ALL_rxrfmode = [LNAByp LNAMed LNAMax];
|
|
%ALL_gain = 0:10:30;
|
|
ALL_rxrfmode = LNAMax;
|
|
ALL_gain = 30;
|
|
ALL_rffe_rxg_low = [0 7:8:64];
|
|
ALL_rffe_rxg_final = [0 7:8:64];
|
|
|
|
|
|
SpN0 = zeros(length(ALL_rffe_rxg_low),length(ALL_rffe_rxg_final));
|
|
SpN1 = zeros(length(ALL_rffe_rxg_low),length(ALL_rffe_rxg_final));
|
|
N0 = zeros(length(ALL_rffe_rxg_low),length(ALL_rffe_rxg_final));
|
|
N1 = zeros(length(ALL_rffe_rxg_low),length(ALL_rffe_rxg_final));
|
|
S0 = zeros(length(ALL_rffe_rxg_low),length(ALL_rffe_rxg_final));
|
|
S1 = zeros(length(ALL_rffe_rxg_low),length(ALL_rffe_rxg_final));
|
|
G0 = zeros(length(ALL_rffe_rxg_low),length(ALL_rffe_rxg_final));
|
|
G1 = zeros(length(ALL_rffe_rxg_low),length(ALL_rffe_rxg_final));
|
|
NF0 = zeros(length(ALL_rffe_rxg_low),length(ALL_rffe_rxg_final));
|
|
NF1 = zeros(length(ALL_rffe_rxg_low),length(ALL_rffe_rxg_final));
|
|
SNR0 = zeros(length(ALL_rffe_rxg_low),length(ALL_rffe_rxg_final));
|
|
SNR1 = zeros(length(ALL_rffe_rxg_low),length(ALL_rffe_rxg_final));
|
|
|
|
%keyboard
|
|
|
|
idx_power = 1;
|
|
for LNA=ALL_rxrfmode
|
|
rf_mode = (RXEN+TXLPFNORM+TXLPFEN+TXLPF25+RXLPFNORM+RXLPFEN+RXLPF25+LNA1ON+LNA+RFBBNORM+DMAMODE_RX)*[1 1 0 0];
|
|
|
|
for rffe_rxg_low=ALL_rffe_rxg_low
|
|
rffe_rxg_low = rffe_rxg_low*[1 1 1 1];
|
|
|
|
idx_gain = 1;
|
|
for rx_gain=ALL_gain
|
|
rx_gain = rx_gain * [1 1 1 1];
|
|
|
|
for rffe_rxg_final=ALL_rffe_rxg_final
|
|
rffe_rxg_final = rffe_rxg_final*[1 1 1 1];
|
|
|
|
oarf_config_exmimo(card,freq_rx,freq_tx,tdd_config,syncmode,rx_gain,tx_gain,eNBflag,rf_mode,rf_rxdc,rf_local,rf_vcocal,rffe_rxg_low,rffe_rxg_final,rffe_band);
|
|
sleep(1);
|
|
|
|
% signal measurement
|
|
gpib_send(gpib_card,gpib_device,'OUTP:STAT ON'); % activate output
|
|
sleep(.5);
|
|
|
|
s=oarf_get_frame(card);
|
|
sleep(.5);
|
|
|
|
SpN0(idx_power,idx_gain) = mean(abs(s(:,1)).^2) - abs(mean(s(:,1))).^2;
|
|
SpN1(idx_power,idx_gain) = mean(abs(s(:,2)).^2) - abs(mean(s(:,2))).^2;
|
|
|
|
figure(1);
|
|
hold off
|
|
plot(20*log10(abs(fft(s(:,1)))),'r',20*log10(abs(fft(s(:,2)))),'b')
|
|
title("Signal");
|
|
ylim([0 200]);
|
|
|
|
% noise measurement
|
|
gpib_send(gpib_card,gpib_device,'OUTP:STAT OFF'); % deactivate output
|
|
sleep(.5);
|
|
|
|
s=oarf_get_frame(card); %oarf_get_frame
|
|
sleep(.5);
|
|
|
|
N0(idx_power,idx_gain) = mean(abs(s(:,1)).^2) - abs(mean(s(:,1))).^2;
|
|
N1(idx_power,idx_gain) = mean(abs(s(:,2)).^2) - abs(mean(s(:,2))).^2;
|
|
|
|
figure(2);
|
|
hold off
|
|
plot(20*log10(abs(fft(s(:,1)))),'r',20*log10(abs(fft(s(:,2)))),'b')
|
|
title("Noise");
|
|
ylim([0 200]);
|
|
|
|
% do some plausibility checks
|
|
% if ((N0(idx_power,idx_gain) > SpN0(idx_power,idx_gain)) ||
|
|
% (N1(idx_power,idx_gain) > SpN1(idx_power,idx_gain)))
|
|
% error("something is wrong");
|
|
% end
|
|
|
|
S0(idx_power,idx_gain) = 10*log10(SpN0(idx_power,idx_gain)-N0(idx_power,idx_gain));
|
|
S1(idx_power,idx_gain) = 10*log10(SpN1(idx_power,idx_gain)-N1(idx_power,idx_gain));
|
|
G0(idx_power,idx_gain) = S0(idx_power,idx_gain) - power_dBm;
|
|
G1(idx_power,idx_gain) = S1(idx_power,idx_gain) - power_dBm;
|
|
NF0(idx_power,idx_gain) = 10*log10(N0(idx_power,idx_gain)) - G0(idx_power,idx_gain) + 105; % 108 is the thermal noise
|
|
NF1(idx_power,idx_gain) = 10*log10(N1(idx_power,idx_gain)) - G1(idx_power,idx_gain) + 105;
|
|
SNR0(idx_power,idx_gain) = S0(idx_power,idx_gain)-10*log10(N0(idx_power,idx_gain));
|
|
SNR1(idx_power,idx_gain) = S1(idx_power,idx_gain)-10*log10(N1(idx_power,idx_gain));
|
|
|
|
printf(' %d: Signal strength (%f,%f), Gain (%f %f), N (%f %f) SNR (%f %f) NF (%f %f)\n',
|
|
rx_gain(1), S0(idx_power,idx_gain),S1(idx_power,idx_gain),
|
|
G0(idx_power,idx_gain),G1(idx_power,idx_gain),
|
|
10*log10(N0(idx_power,idx_gain)),10*log10(N1(idx_power,idx_gain)),
|
|
SNR0(idx_power,idx_gain),SNR1(idx_power,idx_gain),
|
|
NF0(idx_power,idx_gain),NF1(idx_power,idx_gain));
|
|
fflush(stdout);
|
|
%fprintf(fid,'%d, %d, %d, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f\n',
|
|
%power_dBm,gain2391,gain9862, S0,S1,G0,G1,10*log10(N0),10*log10(N1),SNR0,SNR1,NF0,NF1);
|
|
|
|
|
|
idx_gain = idx_gain + 1;
|
|
|
|
figure(3)
|
|
hold off
|
|
plot(ALL_rffe_rxg_final,G0,'o-','markersize',10)
|
|
hold on
|
|
plot(ALL_rffe_rxg_final,G1,'x-','markersize',10)
|
|
legend('Byp RX0','Med RX0','Max RX0','Byp RX1','Med RX1','Max RX1');
|
|
title('Gains')
|
|
|
|
figure(4)
|
|
hold off
|
|
plot(ALL_rffe_rxg_final,NF0,'o-','markersize',10)
|
|
hold on
|
|
plot(ALL_rffe_rxg_final,NF1,'x-','markersize',10)
|
|
legend('Byp RX0','Med RX0','Max RX0','Byp RX1','Med RX1','Max RX1');
|
|
title('Noise Figure')
|
|
end
|
|
end
|
|
idx_power = idx_power + 1;
|
|
end
|
|
end
|
|
|
|
%gpib_send(gpib_card,gpib_device,'OUTP:STAT OFF'); % deactivate output
|
|
|
|
%l0 = [ALL_gain2391; ones(size(ALL_gain2391))].'\G0;
|
|
%l1 = [ALL_gain2391; ones(size(ALL_gain2391))].'\G1;
|
|
|
|
|
|
|
|
|
|
|