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authorsara <sara.halter@gmx.ch>2021-11-15 18:44:05 +0100
committersara <sara.halter@gmx.ch>2021-11-15 18:44:05 +0100
commit43e278405384f91bf9fccc9beda49fef98633d7c (patch)
tree56117117825d99f4771f0f8533c237062c7be3e9 /simulation/QAM
parentCrate slides (diff)
downloadFading-43e278405384f91bf9fccc9beda49fef98633d7c.tar.gz
Fading-43e278405384f91bf9fccc9beda49fef98633d7c.zip
FIR Filter beendet
Diffstat (limited to 'simulation/QAM')
-rwxr-xr-xsimulation/QAM/qam.py15
-rw-r--r--simulation/QAM/qam_nogui.grc6
2 files changed, 14 insertions, 7 deletions
diff --git a/simulation/QAM/qam.py b/simulation/QAM/qam.py
index 6c069b2..bf6b82d 100755
--- a/simulation/QAM/qam.py
+++ b/simulation/QAM/qam.py
@@ -75,21 +75,22 @@ class qam(gr.top_block, Qt.QWidget):
##################################################
# Variables
##################################################
- self.sps = sps = 2
+ self.sps = sps = 4
self.nfilts = nfilts = 32
self.excess_bw = excess_bw = 350e-3
self.timing_loop_bw = timing_loop_bw = 2 * 3.141592653589793 / 100
self.time_offset = time_offset = 1.0
self.samp_rate = samp_rate = 32000
self.rrc_taps = rrc_taps = firdes.root_raised_cosine(nfilts, nfilts, 1.0/float(sps), excess_bw, 45*nfilts)
+ self.qam_const = qam_const = digital.constellation_rect([(-3-3j), (-1-3j), (1-3j), (3-3j), (-3-1j), (-1-1j), (1-1j), (3-1j), (-3+1j), (-1+1j), (1+1j), (3+1j), (-3+3j), (-1+3j), (1+3j), (3+3j)], [0, 4, 12, 8, 1, 5, 13, 9, 3, 7, 15, 11, 2, 6, 14, 10],
+ 4, 1, 1, 1, 1).base()
self.phase_bw = phase_bw = 2 * 3.141592653589793 / 100
self.noise_volt = noise_volt = 0.0001
self.freq_offset = freq_offset = 0
self.eq_ntaps = eq_ntaps = 15
self.eq_mod = eq_mod = 1
self.eq_gain = eq_gain = .01
- self.const = const = digital.constellation_rect([(-3-3j), 0, 0, (3-3j), (-3-1j), 0, 0, (3-1j), (-3+1j), (-1+1j), (1+1j), (3+1j), (-3+3j), 0, 0, (3+3j)], [0, 4, 12, 8, 1, 5, 13, 9, 3, 7, 15, 11, 2, 6, 14, 10],
- 4, 1, 1, 1, 1).base()
+ self.const = const = digital.constellation_16qam().base()
self.chn_taps = chn_taps = [1.0 + 0.0j, ]
##################################################
@@ -440,7 +441,7 @@ class qam(gr.top_block, Qt.QWidget):
self.digital_pfb_clock_sync_xxx_0 = digital.pfb_clock_sync_ccf(sps , timing_loop_bw, rrc_taps, nfilts, nfilts/2, 1.5, 1)
self.digital_map_bb_0 = digital.map_bb([0, 1, 3, 2])
self.digital_diff_decoder_bb_0 = digital.diff_decoder_bb(4)
- self.digital_costas_loop_cc_0 = digital.costas_loop_cc(phase_bw, 2, False)
+ self.digital_costas_loop_cc_0 = digital.costas_loop_cc(phase_bw, 4, False)
self.digital_constellation_modulator_0 = digital.generic_mod(
constellation=const,
differential=True,
@@ -550,6 +551,12 @@ class qam(gr.top_block, Qt.QWidget):
self.rrc_taps = rrc_taps
self.digital_pfb_clock_sync_xxx_0.update_taps(self.rrc_taps)
+ def get_qam_const(self):
+ return self.qam_const
+
+ def set_qam_const(self, qam_const):
+ self.qam_const = qam_const
+
def get_phase_bw(self):
return self.phase_bw
diff --git a/simulation/QAM/qam_nogui.grc b/simulation/QAM/qam_nogui.grc
index 1264e80..cfbed6d 100644
--- a/simulation/QAM/qam_nogui.grc
+++ b/simulation/QAM/qam_nogui.grc
@@ -449,7 +449,7 @@ blocks:
modulus: eq_mod
mu: eq_gain
num_taps: eq_ntaps
- sps: sps
+ sps: '1'
states:
bus_sink: false
bus_source: false
@@ -556,8 +556,8 @@ blocks:
max_dev: '1.5'
maxoutbuf: '0'
minoutbuf: '0'
- osps: sps
- sps: sps * 1.001
+ osps: '1'
+ sps: 'sps '
taps: rrc_taps
type: ccf
states: