From db1454e927565d3279cb7190e2357357ec032a7a Mon Sep 17 00:00:00 2001 From: Steven Franke Date: Fri, 12 Jan 2018 22:48:33 +0000 Subject: [PATCH] Add reference for spb calculation. git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@8405 ab8295b8-cf94-4d9e-aec4-7959e3be5d79 --- lib/fsk4hf/spb.m | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/lib/fsk4hf/spb.m b/lib/fsk4hf/spb.m index cc8103aac..ed1761925 100644 --- a/lib/fsk4hf/spb.m +++ b/lib/fsk4hf/spb.m @@ -54,16 +54,21 @@ function retval = spb_integrand(x) retval=exp(t1+t2+t3+t4+t5); endfunction #------------------------------------------------------------------------------- + #------------------------------------------------------------------------------- function retval = qfunc(x) retval = 0.5 * erfc(x/sqrt(2)); endfunction #------------------------------------------------------------------------------- - #------------------------------------------------------------------------------- # Calculate sphere packing lower bound on the probability of word error # given block length (N), code rate (R), and Eb/No. +# +# Ref: +# "Log-Domain Calculation of the 1959 Sphere-Packing Bound with Application to +# M-ary PSK Block Coded Modulation," Igal Sason and Gil Weichman, +# doi: 10.1109/EEEI.2006.321097 #------------------------------------------------------------------------------- N=174 K=75