Changes between Version 8 and Version 9 of Tutorials/k0SDR/Tutorial14

Timestamp:

Sep 9, 2015, 3:11:04 PM (9 years ago)

Author:

nilanjan

Comment:

—

Tutorials/k0SDR/Tutorial14

@@ -1 +1 @@
  == Zynq-based WISER platform - Spectrum Sensing ==
+
+[[TOC(Tutorials/k0SDR*)]]
+
+=== Description ===
+This tutorial demos capturing spectrum data using the Zynq-based WISER platform on ORBIT.
+
+=== Hardware / Software Resources utilized ===
+ 1. An SB6 node with WISER platform connected to it.
+ 2. ''wiser_sb6_zedboard.ndz'': disk image.
+
+=== Set up ===
+ * Follow the [wiki:Tutorials/k0SDR/Tutorial13 start-up instructions] to set up the load the node image and FPGA images.
+
+
+ * After the set-up is complete, ssh into node1-1 and build the wiserd application
+{{{
+root@node1-1:~# cd wiserd
+root@node1-1:~/wiserd# make clean
+root@node1-1:~/wiserd# make
+g++   -Wall -g -O -std=gnu++0x  -c -o channel_status.o channel_status.cpp
+g++   -Wall -g -O -std=gnu++0x  -c -o consumer_moving_average.o consumer_moving_average.cpp
+g++   -Wall -g -O -std=gnu++0x  -c -o fft_movavg_dc.o fft_movavg_dc.cpp
+g++   -Wall -g -O -std=gnu++0x  -c -o fft_movavg_oml.o fft_movavg_oml.cpp
+g++   -Wall -g -O -std=gnu++0x  -c -o fft_movavg_udp.o fft_movavg_udp.cpp
+g++   -Wall -g -O -std=gnu++0x  -c -o fft_pow_udp.o fft_pow_udp.cpp
+g++   -Wall -g -O -std=gnu++0x  -c -o fft_sigpower_oml.o fft_sigpower_oml.cpp
+g++   -Wall -g -O -std=gnu++0x  -c -o main.o main.cpp
+g++   -Wall -g -O -std=gnu++0x  -c -o radio.o radio.cpp
+g++   -Wall -g -O -std=gnu++0x  -c -o recv_consumer_factory.o recv_consumer_factory.cpp
+g++   -Wall -g -O -std=gnu++0x  -c -o recv.o recv.cpp
+g++   -Wall -g -O -std=gnu++0x  -c -o signal_from_file.o signal_from_file.cpp
+g++   -Wall -g -O -std=gnu++0x  -c -o time_samples_to_file.o time_samples_to_file.cpp
+g++   -Wall -g -O -std=gnu++0x  -c -o tran_consumer_factory.o tran_consumer_factory.cpp
+g++   -Wall -g -O -std=gnu++0x  -c -o tran.o tran.cpp
+g++   -Wall -g -O -std=gnu++0x  -c -o usrp.o usrp.cpp
+g++   -Wall -g -O -std=gnu++0x  -c -o waveform.o waveform.cpp
+g++   -Wall -g -O -std=gnu++0x  -c -o zynq.o zynq.cpp
+g++ -L/usr/local/lib channel_status.o consumer_moving_average.o fft_movavg_dc.o fft_movavg_oml.o fft_movavg_udp.o fft_pow_udp.o fft_sigpower_oml.o main.o radio.o recv_consumer_factory.o recv.o signal_from_file.o time_samples_to_file.o tran_consumer_factory.o tran.o usrp.o waveform.o zynq.o -o wiserd -lboost_system -lboost_random -lboost_thread -lboost_program_options -lboost_iostreams -lpthread -llog4cxx -luhd -loml2 -locomm -lfftw3f -lreadline
+}}}
+
+=== Start spectrum sensing ===
+
+ * Run the wiserd application with the following arguments.
+{{{
+root@node1-1:~/wiserd# ./wiserd --zynq_rx_freq 820e6 --zynq_rx_gain 10 --zynq_fft_bins 256 --zynq_fft_scaling 170 --zynq_avg_window 256
+linux; GNU C++ version 4.8.2; Boost_105400; UHD_003.008.002-86-g566dbc2b
+
+Zynq constructed
+zynq_fft_bins 8
+zynq_fft_scaling 170
+zynq_rx_freq 820000000
+zynq_rx_gain 10
+Ready!
+Zynq thread started
+>
+}}}
+
+ * The Zynq parameters passed to the FPGA to configures the RF hardware and FFT engine \\
+  a) '--zynq_rx_freq 820e6' ----> sets Rx center frequency. Range of values: [400M 4000M] \\
+  b) '--zynq_rx_gain 10' -------> sets Rx amplifier gain. Range of values: [5.0 20.0] \\
+  c) '--zynq_fft_bins 256' -----> sets FFT size. Range of values must be power of 2: [8 256] \\
+  d) '--zynq_fft_scaling 170' --> sets FFT stage scaling. \\
+  e) '--zynq_avg_window 256' ---> sets time averaging across bins. Range of values: [1 256] \\
+
+ Note: the sampling rate not configurable and fixed at 30Msps.
+
+* From wiserd enable FFT engine and start streaming frequency bins from the FPGA to host
+{{{
+> --fft_engine 1
+}}}
+
+* The FFT bin data is collected in binary file name ''zynq_rx_fft.bin''
+
+* From wiserd disable FFT engine and stop streaming data to host
+{{{
+> --fft_engine 0
+}}}
+
+* To view a water fall image collected rx spectrum data, run the fPlot script in octave. A sample image is shown below with a tone at 10MHz generated from a USRP.