Method and Device for Detecting Notch Band
AssigneeMStar Semiconductor, Inc.
InventorsFong Shih Wei, Kun-Yu Wang, Yi-Ying Liao, Ko-Yin Lai, Tai-Lai Tung
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Abstract
A method for detecting a notch band is applied to a multicarrier communication system that operates in a wideband. The method includes: receiving a received signal, and generating a plurality of frequency-domain signals according to the received signal; performing a magnitude operation on the frequency-domain signals to obtain a plurality of magnitude values; determining a plurality of ratios of a first magnitude set among the magnitude values to a second magnitude set among the magnitude value to determine whether the received signal contains a notch band.
Claims16
A method for detecting a notch band, applied to a multicarrier system operating in a wideband, the method comprising:
- receiving a received signal, and generating a plurality of frequency-domain signals according to the received signal;
- performing a magnitude operation on the plurality of frequency-domain signals to obtain a plurality of magnitude values;
- and
- determining whether the received signal contains a notch band according to a plurality of ratios of a first magnitude set among the plurality of magnitude values to a second magnitude set among the plurality of magnitude values;
- wherein, a first magnitude value in the first magnitude set corresponds to a second magnitude value in the second magnitude set, and a frequency where the first magnitude value is located is spaced from a second frequency where the second magnitude value is located by a fixed interval.
A device, applied to a multicarrier communication system operating in a wideband, comprising:
- a frequency transforming circuit, receiving a received signal, and generating a plurality of frequency-domain signals according to the received signal;
- a magnitude circuit, performing a magnitude operation on the plurality of frequency-domain signals to obtain a plurality of magnitude values;
- and
- a determining circuit, determining whether the received signal contains a notch band according to a plurality of ratios of a first magnitude set among the plurality of magnitude values to a second magnitude set among the plurality of magnitude values;
- wherein, a first magnitude value in the first magnitude set corresponds to a second magnitude value in the second magnitude set, and a frequency where the first magnitude value is located is spaced from a second frequency where the second magnitude value is located by a fixed interval.
Dependencies are inferred from the claim text.