FIR Filter beendet

7 files changed, 168 insertions, 66 deletions

diff --git a/doc/thesis/chapters/implementation.tex b/doc/thesis/chapters/implementation.tex
index e57caa6..18282e4 100644
--- a/doc/thesis/chapters/implementation.tex
+++ b/doc/thesis/chapters/implementation.tex
@@ -7,19 +7,36 @@
 
 For the simulation task and after for the Hardware part, the open-source Software GNU Radio has been chosen. This software uses toolboxes for signal processing systems too simulate or/and implement a software-defined radio, based on Python and some C++ implementations for some rapid-application-development environments. The toolboxes can simply, with the help of the graphical user interface, used by drag-and-drop. The Boxes are used to write applications, to receive or to transmit date for a digital system. Some blocks like different filters, channel codes or demodulator elements and a lot more are already implemented. For missing application new elements can be added by coding own block. With the help of the GNU Radio software those toolboxes can easily get connected to each other, creating data streams. 
 
-\subsection{AM Simulation}
 
-For the first Simulation we done a simple AM-simulation to learn how to work with the GNU Radio software. Without any channel effects in between. ...
+\subsection{16QAM Simulation}
 
+\paragraph{Source}
 
-\subsection{QPSK Simulation}
+\paragraph{Modulator}
 
-The second Simulation was a QPSK simulation. 
-...
+\paragraph{Channel Mode}
 
+\paragraph{Polyphase Clock Sync}
 
-\subsection{QPSK Simulation with Fading effect}
-...
+\paragraph{Equalizer}
+
+\paragraph{Costas Loop}
+
+\paragraph{Decoder}
+
+
+
+
+\subsection{Simulation Fading}
+%% TO DO: Quelle: 
+
+\subsubsection{FIR-Filter}
+
+For a first simple Simulation of the Fading effect. A FIR-Filter has been integrate in the Simulation Model.
+\begin{figure}
+
+ 	\includegraphics[width=10cm]{./figures/screenshots/QAM16_Fading_2.png}
+ \end{figure}
 
 
 \section{Hardware}
@@ -36,15 +53,16 @@ The second was with the antennas. 2.4GHz.
 
 
 
-\begin{table}[]

+\begin{table}[]
 	%To DO sepzifikationen ampssen / genauer? https://www.ettus.com/wp-content/uploads/2019/01/b200-b210_spec_sheet.pdf
 	%https://kb.ettus.com/B200/B210/B200mini/B205mini#FAQ
 	\caption{USRP B210 specifications}
-	\begin{tabular}[h]{|c|c|}

+	\begin{tabular}[h]{|c|c|}
 		\hline
 		Dimensions & 9.7 x 15.5 x 1.5 cm \\
 		\hline
-		Ports &
2 TX , 2 RX, Half  or Full Duplex\\
+		Ports &
+2 TX , 2 RX, Half  or Full Duplex\\
 		\hline
 		RF frequencies & from 70MHz to 6GHz\\
 		\hline
@@ -53,7 +71,7 @@ The second was with the antennas. 2.4GHz.
 		External reference input & 10 MHz \\
 		\hline
 	\end{tabular}
-\label{tab:USRP B210 specifications}

+\label{tab:USRP B210 specifications}
 \end{table}
 
 
diff --git a/hardware/QAM/qam.grc b/hardware/QAM/qam.grc
index e14f1fe..0f2fa50 100644
--- a/hardware/QAM/qam.grc
+++ b/hardware/QAM/qam.grc
@@ -291,7 +291,7 @@ blocks:
     modulus: eq_mod
     mu: eq_gain
     num_taps: eq_ntaps
-    sps: int(sps / 2)
+    sps: '1'
   states:
     bus_sink: false
     bus_source: false
@@ -398,7 +398,7 @@ blocks:
     max_dev: '1.5'
     maxoutbuf: '0'
     minoutbuf: '0'
-    osps: int(sps / 2)
+    osps: '1'
     sps: sps
     taps: rrc_taps
     type: ccf
diff --git a/hardware/QAM/qam.py b/hardware/QAM/qam.py
index b8f0e3a..9b54472 100755
--- a/hardware/QAM/qam.py
+++ b/hardware/QAM/qam.py
@@ -86,7 +86,7 @@ class qam(gr.top_block, Qt.QWidget):
         self.eq_ntaps = eq_ntaps = 15
         self.eq_mod = eq_mod = 2
         self.eq_gain = eq_gain = .01
-        self.const = const = digital.constellation_bpsk().base()
+        self.const = const = digital.constellation_16qam().base()
 
         ##################################################
         # Blocks
@@ -821,7 +821,7 @@ class qam(gr.top_block, Qt.QWidget):
             self.plots_grid_layout_0.setRowStretch(r, 1)
         for c in range(0, 1):
             self.plots_grid_layout_0.setColumnStretch(c, 1)
-        self.digital_pfb_clock_sync_xxx_0 = digital.pfb_clock_sync_ccf(sps, timing_loop_bw, rrc_taps, nfilts, nfilts/2, 1.5, int(sps / 2))
+        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, 4, False)
@@ -834,7 +834,7 @@ class qam(gr.top_block, Qt.QWidget):
             verbose=False,
             log=False)
         self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(const)
-        self.digital_cma_equalizer_cc_0 = digital.cma_equalizer_cc(eq_ntaps, eq_mod, eq_gain, int(sps / 2))
+        self.digital_cma_equalizer_cc_0 = digital.cma_equalizer_cc(eq_ntaps, eq_mod, eq_gain, 1)
         self.blocks_null_sink_0 = blocks.null_sink(gr.sizeof_char*1)
         self.blocks_file_source_0 = blocks.file_source(gr.sizeof_char*1, '/home/sara/Documents/Fading/hardware/QPSK/lena512color.tiff', True, 0, 0)
         self.blocks_file_source_0.set_begin_tag(pmt.PMT_NIL)
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:
diff --git a/simulation/QAM_Fading/qam_fading.py b/simulation/QAM_Fading/qam_fading.py
index 063c91b..fff224a 100755
--- a/simulation/QAM_Fading/qam_fading.py
+++ b/simulation/QAM_Fading/qam_fading.py
@@ -93,6 +93,8 @@ class qam_fading(gr.top_block, Qt.QWidget):
         self.eq_gain = eq_gain = .01
         self.const = const = digital.constellation_16qam().base()
         self.chn_taps = chn_taps = [1.0 + 0.0j, ]
+        self.amp = amp = 0.2
+        self.LOS_NLOS = LOS_NLOS = 1
 
         ##################################################
         # Blocks
@@ -108,6 +110,11 @@ class qam_fading(gr.top_block, Qt.QWidget):
         self.params_grid_layout_1 = Qt.QGridLayout()
         self.params_layout_1.addLayout(self.params_grid_layout_1)
         self.params.addTab(self.params_widget_1, 'Receiver')
+        self.params_widget_2 = Qt.QWidget()
+        self.params_layout_2 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.params_widget_2)
+        self.params_grid_layout_2 = Qt.QGridLayout()
+        self.params_layout_2.addLayout(self.params_grid_layout_2)
+        self.params.addTab(self.params_widget_2, 'Fading')
         self.top_grid_layout.addWidget(self.params)
         self._timing_loop_bw_range = Range(0, 200e-3, 10e-3, 2 * 3.141592653589793 / 100, 200)
         self._timing_loop_bw_win = RangeWidget(self._timing_loop_bw_range, self.set_timing_loop_bw, 'Time Bandwidth', "counter_slider", float)
@@ -163,11 +170,11 @@ class qam_fading(gr.top_block, Qt.QWidget):
             self.params_grid_layout_0.setColumnStretch(c, 1)
         self._fading_1_range = Range(1, 30, 1, 2, 200)
         self._fading_1_win = RangeWidget(self._fading_1_range, self.set_fading_1, 'Fading', "counter_slider", int)
-        self.params_grid_layout_0.addWidget(self._fading_1_win, 2, 0, 1, 1)
-        for r in range(2, 3):
-            self.params_grid_layout_0.setRowStretch(r, 1)
+        self.params_grid_layout_2.addWidget(self._fading_1_win, 0, 0, 1, 1)
+        for r in range(0, 1):
+            self.params_grid_layout_2.setRowStretch(r, 1)
         for c in range(0, 1):
-            self.params_grid_layout_0.setColumnStretch(c, 1)
+            self.params_grid_layout_2.setColumnStretch(c, 1)
         self._eq_gain_range = Range(0, .1, .001, .01, 200)
         self._eq_gain_win = RangeWidget(self._eq_gain_range, self.set_eq_gain, 'Equalizer Rate', "counter_slider", float)
         self.params_grid_layout_1.addWidget(self._eq_gain_win, 0, 0, 1, 1)
@@ -175,6 +182,20 @@ class qam_fading(gr.top_block, Qt.QWidget):
             self.params_grid_layout_1.setRowStretch(r, 1)
         for c in range(0, 1):
             self.params_grid_layout_1.setColumnStretch(c, 1)
+        self._amp_range = Range(0, 5, 0.1, 0.2, 200)
+        self._amp_win = RangeWidget(self._amp_range, self.set_amp, 'Ampliude', "counter_slider", float)
+        self.params_grid_layout_2.addWidget(self._amp_win, 1, 0, 1, 1)
+        for r in range(1, 2):
+            self.params_grid_layout_2.setRowStretch(r, 1)
+        for c in range(0, 1):
+            self.params_grid_layout_2.setColumnStretch(c, 1)
+        self._LOS_NLOS_range = Range(0, 1, 1, 1, 200)
+        self._LOS_NLOS_win = RangeWidget(self._LOS_NLOS_range, self.set_LOS_NLOS, 'LOS_NLOS', "counter_slider", int)
+        self.params_grid_layout_2.addWidget(self._LOS_NLOS_win, 0, 1, 1, 1)
+        for r in range(0, 1):
+            self.params_grid_layout_2.setRowStretch(r, 1)
+        for c in range(1, 2):
+            self.params_grid_layout_2.setColumnStretch(c, 1)
         self.qtgui_time_sink_x_0 = qtgui.time_sink_f(
             1024, #size
             samp_rate, #samp_rate
@@ -491,7 +512,7 @@ class qam_fading(gr.top_block, Qt.QWidget):
             self.plots_grid_layout_0.setRowStretch(r, 1)
         for c in range(0, 1):
             self.plots_grid_layout_0.setColumnStretch(c, 1)
-        self.interp_fir_filter_xxx_0 = filter.interp_fir_filter_ccc(1, [1]+([0]*fading_1)+[0.2])
+        self.interp_fir_filter_xxx_0 = filter.interp_fir_filter_ccc(1, [LOS_NLOS]+([0]*fading_1)+[amp])
         self.interp_fir_filter_xxx_0.declare_sample_delay(0)
         self.digital_pfb_clock_sync_xxx_0_0 = digital.pfb_clock_sync_ccf(sps , timing_loop_bw, rrc_taps, nfilts, nfilts/2, 1.5, 1)
         self.digital_pfb_clock_sync_xxx_0 = digital.pfb_clock_sync_ccf(sps, timing_loop_bw, rrc_taps, nfilts, nfilts/2, 1.5, 1)
@@ -661,7 +682,7 @@ class qam_fading(gr.top_block, Qt.QWidget):
 
     def set_fading_1(self, fading_1):
         self.fading_1 = fading_1
-        self.interp_fir_filter_xxx_0.set_taps([1]+([0]*self.fading_1)+[0.2])
+        self.interp_fir_filter_xxx_0.set_taps([self.LOS_NLOS]+([0]*self.fading_1)+[self.amp])
 
     def get_eq_ntaps(self):
         return self.eq_ntaps
@@ -698,6 +719,20 @@ class qam_fading(gr.top_block, Qt.QWidget):
         self.chn_taps = chn_taps
         self.channels_channel_model_0.set_taps(self.chn_taps)
 
+    def get_amp(self):
+        return self.amp
+
+    def set_amp(self, amp):
+        self.amp = amp
+        self.interp_fir_filter_xxx_0.set_taps([self.LOS_NLOS]+([0]*self.fading_1)+[self.amp])
+
+    def get_LOS_NLOS(self):
+        return self.LOS_NLOS
+
+    def set_LOS_NLOS(self, LOS_NLOS):
+        self.LOS_NLOS = LOS_NLOS
+        self.interp_fir_filter_xxx_0.set_taps([self.LOS_NLOS]+([0]*self.fading_1)+[self.amp])
+
 
 
 
diff --git a/simulation/QAM_Fading/qam_fading_V2.grc b/simulation/QAM_Fading/qam_fading_V2.grc
index d45e030..adc1925 100644
--- a/simulation/QAM_Fading/qam_fading_V2.grc
+++ b/simulation/QAM_Fading/qam_fading_V2.grc
@@ -32,6 +32,48 @@ options:
     state: enabled
 
 blocks:
+- name: LOS_NLOS
+  id: variable_qtgui_range
+  parameters:
+    comment: ''
+    gui_hint: 'params@2: 0,1,1,1'
+    label: LOS_NLOS
+    min_len: '200'
+    orient: Qt.Horizontal
+    rangeType: int
+    start: '0'
+    step: '1'
+    stop: '1'
+    value: '1'
+    widget: counter_slider
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1200, 484.0]
+    rotation: 0
+    state: true
+- name: amp
+  id: variable_qtgui_range
+  parameters:
+    comment: ''
+    gui_hint: 'params@2: 1,0,1,1'
+    label: Ampliude
+    min_len: '200'
+    orient: Qt.Horizontal
+    rangeType: float
+    start: '0'
+    step: '0.1'
+    stop: '5'
+    value: '0.2'
+    widget: counter_slider
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1136, 612.0]
+    rotation: 0
+    state: true
 - name: chn_taps
   id: variable
   parameters:
@@ -80,7 +122,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1648, 476.0]
+    coordinate: [1864, 480.0]
     rotation: 0
     state: true
 - name: eq_mod
@@ -92,7 +134,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1648, 400.0]
+    coordinate: [1864, 400.0]
     rotation: 0
     state: true
 - name: eq_ntaps
@@ -104,7 +146,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1728, 400.0]
+    coordinate: [1944, 400.0]
     rotation: 0
     state: true
 - name: excess_bw
@@ -123,7 +165,7 @@ blocks:
   id: variable_qtgui_range
   parameters:
     comment: ''
-    gui_hint: 'params@0: 2,0,1,1'
+    gui_hint: 'params@2: 0,0,1,1'
     label: Fading
     min_len: '200'
     orient: Qt.Horizontal
@@ -137,7 +179,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [992, 476.0]
+    coordinate: [1080, 484.0]
     rotation: 0
     state: true
 - name: freq_offset
@@ -170,7 +212,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1312, 132.0]
+    coordinate: [1528, 128.0]
     rotation: 0
     state: true
 - name: noise_volt
@@ -212,7 +254,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1952, 444.0]
+    coordinate: [2168, 448.0]
     rotation: 0
     state: true
 - name: rrc_taps
@@ -224,7 +266,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1392, 132.0]
+    coordinate: [1608, 128.0]
     rotation: 0
     state: true
 - name: samp_rate
@@ -290,7 +332,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1312, 196.0]
+    coordinate: [1528, 192.0]
     rotation: 0
     state: true
 - name: analog_random_source_x_0
@@ -327,7 +369,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [2592, 296.0]
+    coordinate: [2808, 296.0]
     rotation: 0
     state: true
 - name: blocks_char_to_float_0_0
@@ -361,7 +403,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [2544, 692.0]
+    coordinate: [2760, 696.0]
     rotation: 0
     state: true
 - name: blocks_delay_0
@@ -380,7 +422,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [2624, 1352.0]
+    coordinate: [2848, 1356.0]
     rotation: 0
     state: true
 - name: blocks_throttle_0
@@ -415,7 +457,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [2512, 456.0]
+    coordinate: [2728, 456.0]
     rotation: 0
     state: true
 - name: blocks_unpack_k_bits_bb_0_0
@@ -447,7 +489,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [2448, 868.0]
+    coordinate: [2664, 872.0]
     rotation: 0
     state: true
 - name: channels_channel_model_0
@@ -487,7 +529,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1648, 304.0]
+    coordinate: [1864, 304.0]
     rotation: 0
     state: true
 - name: digital_cma_equalizer_cc_0_0
@@ -506,7 +548,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1536, 788.0]
+    coordinate: [1784, 956.0]
     rotation: 0
     state: true
 - name: digital_constellation_decoder_cb_0
@@ -522,7 +564,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [2288, 296.0]
+    coordinate: [2504, 296.0]
     rotation: 0
     state: true
 - name: digital_constellation_decoder_cb_0_0
@@ -538,7 +580,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [2224, 684.0]
+    coordinate: [2440, 680.0]
     rotation: 0
     state: true
 - name: digital_constellation_modulator_0
@@ -577,7 +619,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1952, 296.0]
+    coordinate: [2168, 288.0]
     rotation: 0
     state: true
 - name: digital_costas_loop_cc_0_0
@@ -595,7 +637,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1872, 824.0]
+    coordinate: [2096, 952.0]
     rotation: 0
     state: true
 - name: digital_diff_decoder_bb_0
@@ -611,7 +653,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [2288, 360.0]
+    coordinate: [2504, 360.0]
     rotation: 180
     state: true
 - name: digital_diff_decoder_bb_0_0
@@ -627,7 +669,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [2264, 764.0]
+    coordinate: [2472, 760.0]
     rotation: 180
     state: true
 - name: digital_map_bb_0
@@ -643,7 +685,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [2304, 456.0]
+    coordinate: [2520, 456.0]
     rotation: 0
     state: true
 - name: digital_map_bb_0_0
@@ -659,7 +701,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [2272, 868.0]
+    coordinate: [2488, 872.0]
     rotation: 0
     state: true
 - name: digital_pfb_clock_sync_xxx_0
@@ -682,7 +724,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1312, 324.0]
+    coordinate: [1528, 328.0]
     rotation: 0
     state: true
 - name: digital_pfb_clock_sync_xxx_0_0
@@ -705,7 +747,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1096, 812.0]
+    coordinate: [1248, 980.0]
     rotation: 0
     state: true
 - name: import_0
@@ -731,13 +773,13 @@ blocks:
     maxoutbuf: '0'
     minoutbuf: '0'
     samp_delay: '0'
-    taps: '[1]+([0]*fading_1)+[0.2]'
+    taps: '[LOS_NLOS]+([0]*fading_1)+[amp]'
     type: ccc
   states:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [968, 348.0]
+    coordinate: [1128, 348.0]
     rotation: 0
     state: true
 - name: params
@@ -758,7 +800,7 @@ blocks:
     label17: Tab 17
     label18: Tab 18
     label19: Tab 19
-    label2: Tab 2
+    label2: Fading
     label3: Tab 3
     label4: Tab 4
     label5: Tab 5
@@ -766,7 +808,7 @@ blocks:
     label7: Tab 7
     label8: Tab 8
     label9: Tab 9
-    num_tabs: '2'
+    num_tabs: '3'
   states:
     bus_sink: false
     bus_source: false
@@ -897,7 +939,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [884.0, -112]
+    coordinate: [1348.0, -80]
     rotation: 90
     state: enabled
 - name: qtgui_const_sink_x_0_0
@@ -989,7 +1031,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1572.0, 80]
+    coordinate: [1776.0, 80]
     rotation: 90
     state: enabled
 - name: qtgui_const_sink_x_1
@@ -1081,7 +1123,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1812.0, 56]
+    coordinate: [2016.0, 48]
     rotation: 90
     state: true
 - name: qtgui_const_sink_x_2
@@ -1173,7 +1215,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [2188.0, 0]
+    coordinate: [2400.0, 0]
     rotation: 90
     state: true
 - name: qtgui_freq_sink_x_0
@@ -1253,7 +1295,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1200.0, 624]
+    coordinate: [1424.0, 584]
     rotation: 270
     state: true
 - name: qtgui_freq_sink_x_2_1
@@ -1333,7 +1375,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [2848, 488.0]
+    coordinate: [3064, 480.0]
     rotation: 0
     state: true
 - name: qtgui_time_sink_x_0
@@ -1430,7 +1472,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [2816, 288.0]
+    coordinate: [3032, 288.0]
     rotation: 0
     state: true