Parity-check matrix calculation for paraunitary oversampled DFT filter banks

Tanja Karp, Michel Kieffer, Pierre Duhamel

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Joint source-channel coding schemes based on oversampled filter banks were recently proposed. Oversampled filter banks are considered as error-correcting codes, extending the notion of code subspace, parity-check matrix, and syndrome to the domain of real and complex numbers. We here present an efficient calculation and implementation of the parity-check polynomial matrices for oversampled discrete Fourier transform (DFT) filter banks. If desired, the calculation of the parity-check polynomials can be performed as part of the prototype filter design procedure. We compare our method to those previously presented in the literature.

Original languageEnglish
Pages (from-to)5277-5283
Number of pages7
JournalIEEE Transactions on Signal Processing
Issue number10 II
StatePublished - 2008


  • Joint source-channel coding
  • Oversampled discrete Fourier transform (DFT) filter banks
  • Parity-check matrix


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