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analyze WCDMA traces collected by USRP
This project forked from yichao0319/wcdma_trace_analysis
analyze WCDMA traces collected by USRP
Analyze the WCDMA traces collected by USRP. ------------------------- 1. Collect traces: Becasue the WCDMA uses 3.84Mchips/s rate, we need to set the sampling rate to 7.68M samples per second. uhd_rx_cfile.py -v --show-async-msg -g 45 --samp-rate=7.68e6 -f 1965M uhd_signal.dat We can use USRP utility tool to visualize collected trace: gr_plot_yichao.py -s 20000000 -B 5000 -R 7.68e6 uhd_signal.dat ------------------------- 2. Compile codes: make 2.1. autocorrelate.cc the main code to analyze WCDMA traces which includes: i) find slot and frame boundary ii) identify secondary synchronization code, first scrambling code, second scrambling code usage: autocorr <preamble input file> <start index> <end index> <threshold> e.g. ./autocorr DL_wdata_768.dat 22206100 22400000 7 perl autocorrelate.pl 2.2. output_ycc.cc (codes from Apurv with slitely modification) Convert USRP binary signal files to readable format: [index] [magnitude] [phase] [real] [imaginary] usage: output <file name> e.g. output uhd_signal.dat 2.3. autocorrelate2.cc usage: autocorr2 <preamble input file> <start index> <end index> <threshold> e.g. ./autocorr2 DL_wdata_768.dat 21000000 21030000 > coeff2.txt gnuplot plot_coeff2.plot batch: batch.pl
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