usrp_spectrum_sense 的工作流程简介 转自:meteor,http://gnuradio.cc/read.php?tid-270.html 很多研究认知的朋友都将usrp_spectrum_sense 作为频谱感知的原型程序,以前我也粗略的看了一下,这两天看到一些这方面的问题,所以我详细的阅读了该程序。下面我将的理解和大家分享,有不对的地方还希望大家提出指正。 首先...
Such radios are able to sense the spectral environment and use this information to opportunistically provide wireless links that meet the user communications requirements optimally. To achieve the goal of cognitive radio, it is a fundamental requirement that the cognitive user (CU) performs spectrum ...
# This allows us to discard the bins on both ends of the spectrum. self.freq_step = 0.75 * usrp_rate self.min_center_freq = self.min_freq + self.freq_step/2 nsteps = math.ceil((self.max_freq - self.min_freq) / self.freq_step) ...
Spectrum utilization can be significantly improved by adopting cognitive radio (CR) technology. Such radios are able to sense the spectral environment and ... RA Rashid 被引量: 14发表: 2011年 Implementation of a Channel Sounder using GNU Radio Opensource SDR Platform GNU Radio refers to some ope...
UHD(Universal Hardware Driver)是一个开源的软件驱动程序,用于与USRP(Universal Software Radio Peripheral)设备进行通信。USRP是一种软件无线电设备,可以用于接收和发送无线电信号。 使用UHD从USRP流式传输固定数量的样本,可以按照以下步骤进行操作: 安装UHD驱动程序:首先,需要在计算机上安装UHD驱动程序。可以从UHD官...
关键词:认知无线电USRPGNURadio选择接入多路并传 Abstract Withtherapidlydevelopmentofwirelesscommunicationtechnology,thescarcity ofspectrumresourcesisincreasinglyserious.However,traditionalfixedspectrum allocationstrategyhasresultedinalargenumberofidlelicensedspectrumresources. Cognitiveradiocandynamicallysenseambien ...
self.ofdm_bins = options.sense_bins# build graphs2v = gr.stream_to_vector(gr.sizeof_gr_complex, self.fft_size) mywindow = window.blackmanharris(self.fft_size) fft = gr.fft_vcc(self.fft_size,True, mywindow) power =0fortapinmywindow: ...