Dynamic Channelization Structure of WOLA Filter Banks Based on FRM
This paper introduces frequency response masking(FRM)and proposes a weighted overlap-add(WOLA)filter bank dynamic channelization structure based on FRM to address the issue of the high complexity of prototype filter design.Firstly,FRM technology is improved in this structure,and a new FRM is proposed to design a filter with complementary power features.Secondly,the FRM-designed filter serves as the WOLA filter bank dynamic structure's prototype filter.Additionally,the channels overlap to reduce signal distortion caused by the blind zone.The simulation results demonstrated that this structure enables dynamic signal reception and achieves a good reconstruction effect.Furthermore,compared to directly designing a prototype filter to meet the reconstruction characteristics,the FRM design filter saves 79%of multiplier resources.
frequency response maskingweighted overlap-add structuredynamic channelizationprototype filterreconstruction