Digital front-end system for suppressing narrowband interference and its suppression method
A narrowband interference, digital front-end technology, applied in the field of OFDM communication systems, can solve the problems of difficult signal gain control, unsuccessful demodulation, signal saturation, etc., to avoid signal saturation blocking the channel, increase the anti-narrowband interference ability, and prevent the gain from being too high. small effect
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[0031] Embodiment: The following will clearly illustrate this case with drawings and detailed descriptions. After any person skilled in the art understands the embodiment of this case, he can change and modify it by the technology taught in this case without departing from the spirit of this case. with range.
[0032] See attached figure 1 As shown, a digital front-end system for suppressing narrowband interference; including variable gain amplifiers, analog-to-digital converters, band-stop filters, automatic gain controllers, digital band-pass filters, baseband processors, and spectrum analyzers.
[0033] Wherein, the output of the variable gain amplifier is electrically coupled to the input of the analog-to-digital converter; the first output of the analog-to-digital converter is electrically coupled to the first input of the band-stop filter, and the analog-to-digital The second output of the converter is electrically coupled to the input of the spectrum analyzer; the firs...
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