From 0e16a28047d07afc6e4d31839d804dca0d0de31e Mon Sep 17 00:00:00 2001
From: Tom Rondeau <trondeau@vt.edu>
Date: Wed, 12 Oct 2011 17:43:35 -0400
Subject: digital: removed psk and qam from gnuradio-core; unnecessary now.
---
gnuradio-core/src/python/gnuradio/blks2impl/qam.py | 113 ---------------------
1 file changed, 113 deletions(-)
delete mode 100644 gnuradio-core/src/python/gnuradio/blks2impl/qam.py
(limited to 'gnuradio-core/src/python/gnuradio/blks2impl/qam.py')
diff --git a/gnuradio-core/src/python/gnuradio/blks2impl/qam.py b/gnuradio-core/src/python/gnuradio/blks2impl/qam.py
deleted file mode 100644
index 22b1e1dabb..0000000000
--- a/gnuradio-core/src/python/gnuradio/blks2impl/qam.py
+++ /dev/null
@@ -1,113 +0,0 @@
-#
-# Copyright 2005,2006 Free Software Foundation, Inc.
-#
-# This file is part of GNU Radio
-#
-# GNU Radio is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 3, or (at your option)
-# any later version.
-#
-# GNU Radio is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNU Radio; see the file COPYING. If not, write to
-# the Free Software Foundation, Inc., 51 Franklin Street,
-# Boston, MA 02110-1301, USA.
-#
-
-from math import pi, sqrt
-import math
-
-# These constellations are generated for Gray coding when symbos [1, ..., m] are used
-# Mapping to Gray coding is therefore unnecessary
-
-def make_constellation(m):
- # number of bits/symbol (log2(M))
- k = int(math.log10(m) / math.log10(2.0))
-
- coeff = 1
- const_map = []
- for i in range(m):
- a = (i&(0x01 << k-1)) >> k-1
- b = (i&(0x01 << k-2)) >> k-2
- bits_i = [((i&(0x01 << k-j-1)) >> k-j-1) for j in range(2, k, 2)]
- bits_q = [((i&(0x01 << k-j-1)) >> k-j-1) for j in range(3, k, 2)]
-
- ss = 0
- ll = len(bits_i)
- for ii in range(ll):
- rr = 0
- for jj in range(ll-ii):
- rr = abs(bits_i[jj] - rr)
- ss += rr*pow(2.0, ii+1)
- re = (2*a-1)*(ss+1)
-
- ss = 0
- ll = len(bits_q)
- for ii in range(ll):
- rr = 0
- for jj in range(ll-ii):
- rr = abs(bits_q[jj] - rr)
- ss += rr*pow(2.0, ii+1)
- im = (2*b-1)*(ss+1)
-
- a = max(re, im)
- if a > coeff:
- coeff = a
- const_map.append(complex(re, im))
-
- norm_map = [complex(i.real/coeff, i.imag/coeff) for i in const_map]
- return norm_map
-
-# Common definition of constellations for Tx and Rx
-constellation = {
- 4 : make_constellation(4), # QAM4 (QPSK)
- 8 : make_constellation(8), # QAM8
- 16: make_constellation(16), # QAM16
- 64: make_constellation(64), # QAM64
- 256: make_constellation(256) # QAM256
- }
-
-# -----------------------
-# Do Gray code
-# -----------------------
-# binary to gray coding
-binary_to_gray = {
- 4 : range(4),
- 8 : range(8),
- 16: range(16),
- 64: range(64),
- 256: range(256)
- }
-
-# gray to binary
-gray_to_binary = {
- 4 : range(4),
- 8 : range(8),
- 16: range(16),
- 64: range(64),
- 256: range(256)
- }
-
-# -----------------------
-# Don't Gray code
-# -----------------------
-# identity mapping
-binary_to_ungray = {
- 4 : range(4),
- 8 : range(8),
- 16: range(16),
- 64: range(64)
- }
-
-# identity mapping
-ungray_to_binary = {
- 4 : range(4),
- 8 : range(8),
- 16: range(16),
- 64: range(64)
- }
--
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