QUATERNIONIC APPROACH TO 8-CHANNEL GENERAL PARAUNITARY FILTER BANK (WedAmPO2)

Author(s) : Marek Parfieniuk (Bialystok Technical University, Poland) Alexander Petrovsky (Bialystok Technical University, Poland)

Abstract : This paper presents an alternative factorization for 8-channel general paraunitary filter bank. The utilization of quaternion multiplications leads to a lattice structure being lossless regardless of coefficient quantization. Other advantages are reduced memory requirements and good suitability for FPGA and VLSI implementations. The shown decompositions of 8 x 8 orthogonal matrices can find other applications unrelated to filter banks.

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