1 files changed, 0 insertions, 44 deletions
diff --git a/octave/fsk_lib_ldpc_tx.m b/octave/fsk_lib_ldpc_tx.m
deleted file mode 100644
index 408ba79..0000000
--- a/octave/fsk_lib_ldpc_tx.m
+++ /dev/null
@@ -1,44 +0,0 @@
-% fsk_lib_ldpc_tx.m
-%
-% LDPC coded 4FSK modem tx, generates a 8 kHz 16 bit short real valued sample file
-
-function fsk_lib_ldpc_tx(filename, num_frames=10, Rs=100, coderate=0.5, EbNodB=100)
-  fsk_lib_ldpc;
-  
-  % set up LDPC code
-  init_cml();
-  if coderate == 0.5
-    load H_256_512_4.mat;
-  elseif coderate == 0.75
-    load HRAa_1536_512.mat; H=HRA;
-  else
-    disp("unknown code rate");
-  end  
-  [states code_param] = fsk_lib_ldpc_init (H, Rs, Fs=8000);
-  n = code_param.coded_bits_per_frame; k = code_param.data_bits_per_frame;
-  
-  rand('seed',1);
-  data_bits = round(rand(1,code_param.data_bits_per_frame)); tx_bits = [];
-  for f=1:num_frames
-    codeword_bits = LdpcEncode(data_bits, code_param.H_rows, code_param.P_matrix);
-    tx_bits = [tx_bits codeword_bits];
-  end
-
-  tx = fsk_mod(states, tx_bits);
-
-  % set up (optional) AWGN noise
-  EcNodB = EbNodB + 10*log10(states.rate);
-  EcNo = 10^(EcNodB/10);
-  variance = states.Fs/(states.Rs*EcNo*states.bitspersymbol);
-
-  % note real noise
-  noise = sqrt(variance/2)*randn(length(tx),1);
-  rx = tx + noise;
-
-  frx=fopen(filename,"wb"); fwrite(frx, states.amp_scale*rx, "short"); fclose(frx);
-  printf("Fs: %d Rs: %d rate %4.2f (%d,%d) EbNodB: %3.1f  EcNodB: %3.1f frames transmitted: %3d\n",
-  Fs, Rs, coderate, n, k, EbNodB, EcNodB, num_frames);
-end
-
-
-