Mismatch channel equalization method and device based on sub-band decomposition, and medium

• Main Authors: CHENG HAO, YI ZIXUAN
• Format: Patent
• Language: Chinese; English
• Published: 16.07.2024
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

The invention relates to a mismatch channel equalization method and device based on sub-band decomposition, and a medium, and the method comprises the following steps: S1, obtaining echo signals of mismatch channels, and obtaining the baseband data of each mismatch channel; s2, decomposing the baseband data of each mismatched channel into a plurality of sub-bands, including to-be-equalized sub-bands participating in equalization and sub-bands not participating in equalization, and merging the sub-bands not participating in equalization to obtain non-equalized sub-bands; s3, performing non-uniform extraction on the to-be-equalized sub-band of each mismatched channel, calculating the equalizer coefficient of the to-be-equalized sub-band after non-uniform extraction by using an inverse Fourier transform method, and performing in-sub-band equalization; and S4, performing non-uniform interpolation on the equalized sub-bands, and then combining the equalized sub-bands with the non-equalized sub-bands to complete mi