Vector signal analyzers like Tektronix Real-Time Spectrum analyzers operate by converting the incoming RF signal into quadrature baseband (IQ) samples vs. time. All of the measurements and results that can be displayed, from simple spectrum measurements to complex modulation analysis, are computed ...
ModulationIndex=modulationIndex); if (testValue=="IQ samples dynamic range") configObject.WantedSignalLevel = [-52 -49 -57 -62]; end Based on the PHY transmission mode, compute the sampling rate. Get sampleRate = 1e6*(1+1*(phyMode=="LE2M"))*sps; % In Hz Generate RF-PHY Test ...
Recently, automatic modulation classification techniques using convolutional neural networks on raw IQ samples have been investigated and show promise when compared to more traditional likelihood-based or feature-based techniques. While likelihood-based and feature-based techniques are effective, making classif...
Methods, systems, and apparatus for subcarrier modulation with radio frequency inphase-quadrature (IQ) modulators. A system includes a plurality of IQ modulators, each configured to receive an input electrical signal comprising an inphase signal and a quadrature signal, and each configured to ...
另外一般常见的constant envelope 讯号还有FM(frequency modulation), GMSK。 Rhode&Schwarz “Fundamental of Spectrum Analysis” Rhode&Schwarz “Fundamental of Spectrum Analysis” 这里在介绍一下IQ domain,纯学RF或微波理论的同学通常数字通讯的课程都是去插花修一下(至少我自己是啦),看IQ domain或星状图...
Output RF spectrum due to modulation (M-ORFS) 13.4, 13.17.4 Output RF spectrum due to switching (S-ORFS) 13.4, 13.17.4 Reference sensitivity 14.2 DUT support required Usable input level range 14.3 DUT support required RX level DUT support required. A common test as part of devi...
In-phase quadrature (IQ) modulation scheme is widely used for RF communication systems, e.g. cognitive radio, IQ radar. Using features of IQ signal allows for transient changes in the magnitude and phase response of the resonator to be estimated. It can improve sensitivity for microwave ...
Quickly and Simply Create Digitally Modulated IQ, IF, and RF Waveforms Great Flexibility to Customize Waveform to Meet Specific Requirements Define Baseband IQ, IF, and RF Signals using a Variety of Modulation Schemes Create Single and Multicarrier Signals where Each Carrier is Independently Defined ...
2.SettheRFcarrierto1GHz,-5dBm. 3.TurnonmodulationandRFoutput. 1)PresstheRFON/OFFfrontpanelbuttontoturnontheRFoutput. 2)PresstheMODON/OFFfrontpanelbuttontoturnontheIQModmodulationmain switch. 2.3.4DemodulationResult Viewthedemodulationresultsinthespectrumanalyzer: 19 SigIQProUserManual 2.4CreateandPlay...
Generate random data symbols and apply QPSK modulation. Get M = 4; % QPSK spf = 1e6; % Samples per frame data = randi([0 M-1],spf,1); txSig = pskmod(data,M,pi/4); Create a constellation diagram object to display the QPSK signal before and after IQ imbalance compensation. The...