Design of oversampled uniform dft filter banks with delay specification using quadratic optimization
| Document type: | Conference Papers |
|---|---|
| Peer reviewed: | Yes |
| Full text: | |
| Author(s): | Jan Mark de Haan, Nedelko Grbic, Sven Nordholm, Ingvar Claesson |
| Title: | Design of oversampled uniform dft filter banks with delay specification using quadratic optimization |
| Translated title: | Översamplad design av likformig DFT filterbank med specificerad delay med kvadratisk optimering |
| Conference name: | The 2001 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP'01 |
| Year: | 2001 |
| Pagination: | 3633-3636 |
| Publisher: | Institute of Electrical and Electronics Engineers Inc. |
| City: | Salt Lake City |
| ISI number: | 000173806500910 |
| Organization: | Blekinge Institute of Technology |
| Department: | Department of Telecommunications and Signal Processing (Institutionen för telekommunikation och signalbehandling) Department of Telecommunications and Signal Processing S-372 25 Ronneby +46 455 38 50 00 |
| Authors e-mail: | jmd@bth.se, ngr@bth.se, sven@atri.curtin.edu.au, icl@bth.se |
| Language: | English |
| Abstract: | Subband adaptive filters have been proposed to avoid the drawbacks of slow convergence and high computational complexity associated with time domain adaptive filters. Subband processing introduces transmission delays caused by the filter bank and signal degradations due to aliasing effects. One efficient way to reduce the aliasing effects is to allow a higher sample rate than critically needed in the subbands and thus reduce subband signal degradation. We suggest a design method, for uniform DFT filter banks with any oversampling factor, where the total filter bank group delay may be specified, and where the aliasing and magnitude/phase distortions are minimized. |
| Summary in Swedish: | Filterbank design är av stor betydelse för applikationer där talsignaler skall behandlas. Arbetet beskriver en ny effektiv metod för att skapa översamplade filterbankar för talsignal-applikationer. |
| Subject: | Signal Processing\Filter Design Signal Processing\Beamforming |
| Keywords: | oversampled, subbands, beamforming, quadratic, optimization |
