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Signal generator2/10/2024 ![]() It simulates fully-coded signals so that a receiver can decode the signals and recover original payload data.\įigure 1. The real-time baseband processor allows generation of multiple fully-coded logical channels, such as data channel, control channel, broadcast channel, etc. There are no waveform files required in this mode. You just need to configure parameters for each sub-block, then the baseband processor generates digital I/Q waveforms. The processor is configured for specific modulation schemes or standards. It includes essential components of a transmitter, from payload generator, formatter (channel coding), I/Q symbol builder, spreading/scrambling encoding to FIR (Finite Impulse Response) filter. Figure 1 shows a real-time baseband processor block diagram. The real-time I/Q baseband generator interprets data bits and produces analog voltages that represent the modulation you want. Real-time waveform generator mode is common for receiver test. Let’s take a close look at these two flexible baseband architectures and how you use them in your applications. You may not know which type of baseband architecture you’re using and why. In addition, signal generators also allow external I/Q signal inputs for customized modulation signals. RF vector signal generators offer two flexible baseband architectures with complementary features for generating complex digital modulation signals, real-time and arbitrary waveform generation. Does the VSG have enough memory available for my waveform files? Sometimes, you configure signal parameters on a VSG, but cannot find a button to download waveforms you set to the VSG! What’s the problem with your measurement setups? When you download baseband waveform files to an RF vector signal generator (VSG), a question comes to mind. Real-time and Arbitrary Waveform Generation Mode: Which One is Right for Your Test?
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