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Measuring 5G channel sounding requires assessing the characteristics of the radio channel to optimize wireless communication. The wideband correlation technique represents the best approach to performing channel sounding as it measures the entire bandwidth, simultaneously enabling faster access to channel impulse response (CIR) data. The technique involves creating a mathematical model as well as capturing and analyzing the correlation of signals received at multiple antennas. Analyzing the signals enables the spatial property characterization of the wireless channel, such as the angle of arrival (AoA), angle of departure (AoD), and other spatial information.
To perform 5G channel sounding measurements, engineers need a solution that uses wideband correlation as the baseband-sounding technique. The solution must include a wideband signal generator with a wideband arbitrary waveform generator (AWG) and millimeter-wave (mmWave) vector signal generator (VSG). The AWG provides the in-phase and quadrature (I/Q) signals that modulate the output of the VSG, and the mmWave switch routes the VSG output to the transmit antennas in sequence. On the receiver side, a multichannel downconverter translates the received signals into the intermediate frequency (IF) bandwidth of the multichannel digitizer.
Additional resources for Channel Sounding Measurements
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