我们调用uhd_fft来看一看USRP对调频广播频段的信号的频谱检测情况,在Conda Prompt中敲入命令:uhd_fft -f 89.6e6,回车,观察中心频率89.6MHz,默认带宽为1MHz的信号频谱情况。 利用USRP进行频谱监测的命令 uhd_fft正常运行时的界面图 程序运行后,会弹出一个UHD FFT运行窗口,如上图所示。在该程序中调整采样速率为2Msps...
进行环境变量设置，调整UHD_PKG_PATH和UHD_IMAGES_DIR，以便系统识别USRP的Images文件存储路径。在命令界面输入uhd_USRP_probe.exe测试安装效果，若遇到找不到libusb-1.0.dll文件的错误，下载并复制libusb-1.0.dll文件至指定路径后重新测试。调用UHD demo程序uhd_fft，输入命令uhd_fft -f 89.6e6观察...
FFT & FEF (Future Extension Frame) 4K UHD & HD . DVB-T2 FEF 4K UHD & HD . SHVC , 6 MHz & 8 MHz , TOV (Threshold of Visibility) AWGN (Additive White Gaussian Noise), Brazil-D, TU (Typical Urban)-6 . 6MHz 8MHz 4K UHD & HD ....
接收测试-uhd_fft.py 之前在本文中提及的uhd_fft.py用来测试USRP无线电接收功能很有帮助。可用的测试方法框图见表1。在本测试中,子板频率范围内的信号资源操作和正在接受测试的USRP 设备用来产生测试信号。信号资源可以是一个射频信号生成器或者另一个USRP无线电。必须注意保证,不能超过特定子板最大输入规格。所有子...
usr/share/doc/uhd-doc/html/adapter__id_8hpp.html /usr/share/doc/uhd-doc/html/adapter__id_8hpp.js /usr/share/doc/uhd-doc/html/adapter__id_8hpp_source.html /usr/share/doc/uhd-doc/html/adc__self__calibration__iface_8hpp.html /usr/share/doc/uhd-doc/html/adc__self__calibration__...
The spectra were calculated using a 2D Fast Fourier Transform (FFT) of the luminance components of the SRCs, additionally shifting the FFT such that the zero frequency component is shown in the center, and logarithmically scaling the resulting values for better visualization [62]. Each original ...
FFT 2K and 8K Guard interval 1/4, 19/256, 1/8, 19/128, 1/16, 1/32, 1/128 Input Signal level: Min -80dbm max -20dbm (64QAM,8K 1/8,7/8) Antenna Power 5V DC @ 150mA MAX ANT. Connector IEC 169-2, female.Input Impedance:75 Ω ...
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Due to the limit of a 6-MHz bandwidth, the minimum FFT size of the optimized parameters was restricted to 8,192 with a high code rate. In addition, the maximum guard interval size of the optimized parameters was restricted to 1/32. Thus, the degradation of receiving performances in time-...
[INF] Adding block description from fft_1x64.yml (/usr/local/share/uhd/rfnoc/blocks). [INF] Adding block description from window.yml (/usr/local/share/uhd/rfnoc/blocks). [INF] Adding block description from keep_one_in_n.yml (/usr/local/share/uhd/rfnoc/blocks). [INF] Adding block ...