Wed Apr 15 17:31:00 2009 options id usrp2_dpsk_mod _enabled True title USRP2 DPSK Modulation author Example description Generate a DPSK signal window_size 1280, 1024 generate_options wx_gui category Custom realtime_scheduling _coordinate (10, 10) _rotation 0 variable id samp_rate _enabled True value 100e6/interp _coordinate (52, 166) _rotation 0 usrp2_sink_xxxx id usrp2_sink_xxxx_0 _enabled True type complex interface mac_addr interpolation interp frequency tun_freq gain 0 _coordinate (1059, 56) _rotation 0 gr_multiply_const_vxx id gr_multiply_const_vxx_0 _enabled True type complex const ampl vlen 1 _coordinate (679, 58) _rotation 0 blks2_dxpsk_mod id blks2_dxpsk_mod_0 _enabled True type dqpsk samples_per_symbol samps_per_sym excess_bw 0.35 gray_code True _coordinate (468, 55) _rotation 0 variable id interp _enabled True value 100 _coordinate (31, 256) _rotation 0 variable id samps_per_sym _enabled True value 8 _coordinate (126, 250) _rotation 0 random_source_x id random_source_x_0 _enabled True type byte min 0 max 256 num_samps 1000 repeat True _coordinate (255, 39) _rotation 0 variable_slider id ampl _enabled True label Amplitude value .1 min 0 max 1 num_steps 100 style wx.SL_HORIZONTAL converver float_converter grid_pos _coordinate (246, 372) _rotation 0 variable_slider id rx_freq_off _enabled True label RX Freq Offset (Hz) value -20e3 min -50e3 max +50e3 num_steps 100 style wx.SL_HORIZONTAL converver float_converter grid_pos _coordinate (247, 508) _rotation 0 variable_slider id tun_freq _enabled True label USRP2 Freq (Hz) value 2.45e9 min 2.4e9 max 2.5e9 num_steps 100 style wx.SL_HORIZONTAL converver float_converter grid_pos _coordinate (49, 341) _rotation 0 wxgui_constellationsink2 id wxgui_constellationsink2_0 _enabled True title Constellation Plot samp_rate samp_rate frame_rate 5 const_size 2048 M 4 theta 0 alpha 0.005 fmax 0.06 mu 0.5 gain_mu 0.005 symbol_rate samp_rate/samps_per_sym omega_limit 0.005 grid_pos _coordinate (920, 202) _rotation 0 wxgui_fftsink2 id wxgui_fftsink2_0 _enabled True type complex title FFT Plot samp_rate samp_rate baseband_freq tun_freq y_per_div 10 ref_level 10 fft_size 1024 fft_rate 30 peak_hold False average False avg_alpha 0 grid_pos _coordinate (691, 155) _rotation 0 wxgui_scopesink2 id wxgui_scopesink2_0 _enabled False type complex title Scope Plot samp_rate samp_rate v_scale 0 t_scale 1e-6 ac_couple False xy_mode True num_inputs 1 grid_pos _coordinate (515, 272) _rotation 0 usrp2_source_xxxx id usrp2_source_xxxx_0 _enabled True type complex interface eth1 mac_addr decimation interp frequency tun_freq + rx_freq_off gain 30 _coordinate (270, 200) _rotation 0 random_source_x_0 blks2_dxpsk_mod_0 0 0 blks2_dxpsk_mod_0 gr_multiply_const_vxx_0 0 0 gr_multiply_const_vxx_0 usrp2_sink_xxxx_0 0 0 usrp2_source_xxxx_0 wxgui_constellationsink2_0 0 0 usrp2_source_xxxx_0 wxgui_scopesink2_0 0 0 usrp2_source_xxxx_0 wxgui_fftsink2_0 0 0