Matlab programs:

Top-level code

txattn.m - Sets Bob's transmit attenuation, which determines the transmitted
        power of his pilots.
    Controls actual equipment using USB & TCPIP control.
    Written and used at Photon Summit.  

pol.m - Sweeps polarizer waveplates and chooses settings
        resulting in the highest recieved IQ power.
    To be used during link setup.
    Controls actual equipment using USB & TCPIP control.
    Written and used at Photon Summit.
    
dsw.m - Delay Sweep.  Used when Alice synchronizes using a recovered clock.
        Initially, the phase relationship between the recoverd clock and her
        received pilots is unknown.  This sweeps the delay setting and measures
    the number of detected pilots vs delay.  It makes a plot and sets
    the "sync_dly" to the best setting.
    To be used during link setup.
    Controls actual equipment using USB & TCPIP control.
    Written and used at Photon Summit.

tsw.m - Threshold Sweep.
        Initially, the loss on the link is unknown, and the best correlation
    threshold for Alice to use when detecting pilots is unknown.  This
    sweeps the threshold and measures the number of detected pilots per 1024 frames.
    Ideally this number should be 1024. (though the counter saturates at
    1023).  This makes a plot and chooses a 
    To be used during link setup or after changing transmit power.
    Controls actual equipment using USB & TCPIP control.
    Written and used at Photon Summit.

p.m - general IQ samples file viewer.

rx.m - analyze IQ sample files files for QSDC.
       Computes symbol error rate, Bit error rate (BER), and produces
   a file r_###_out.txt containing per-bit confidence metrics that could
   perhaps be used to compute an LLR.  Anyway, these values may be fed
   into a Grand decoder, and that seems to work.

cdm.m - analyze IQ sample files for CDM (or CDW) (reflection/transmission tomography)

genhex.m - generate hex file for hdl simulation from IQ sample file

im_preemp.m - calculate im preemphasis profile, stores result in a file
   that can be downloaded into HDL.

Calibration code

cal_imbal.m - calibrate IQ imbalance cal_gas.m - measure HCN gaslines cal_gas_show.m - calculate gasline params and gen calibration file wcal.m - write gas calibration file to QNA

Test code

p2.m - analyze beat rp.m - plot data captured from Red Pitaya board beat.m - measure beat from QNA

t1.m - effect of LO power on noise t2.m - sensitiviy vs sig pwr with & wo connet amp t3.m - junk t5.m - exploration of lorentzian fit t6.m - fourier transform of lorentz

t8.m - illustrative plots of modulation signals t9.m - simulate pwr det by red pitaya. t10.m - illustrative plot of phase detector out

Helper functions

calc_*

Batch file utilities: g.bat - get capture file from zcu106 rpg.bat - get capture file from Red Pitaya