LTE Baseband Receiver Verification
By Randy Becker. Agilent Tech.
Until now, in a mobile communication system, the analog signal from the RF section was demodulated into I and Q components by analog techniques. However, in this era of software-defined radio systems, the down-converted intermediate frequency (IF) signal is often digitized by an analog-to-digital converter (ADC) and then sent to the baseband section for processing. demodulation and decoding. The baseband receiver can be tested independent of the RF section by generating a suitable IF signal using a signal generator with the output frequency set for the desired IF.
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