Proceedings of 1994 28th Asilomar Conference on Signals, Systems and Computers (1994)

Pacific Grove, CA, USA

Oct. 31, 1994 to Nov. 2, 1994

ISSN: 1058-6393

ISBN: 0-8186-6405-3

pp: 177-181

Ginkyu Choi , Dept. of Electr. Eng., Polytechnic Univ., Brooklyn, NY, USA

R.A. Haddad , Dept. of Electr. Eng., Polytechnic Univ., Brooklyn, NY, USA

ABSTRACT

Develops a methodology for the analysis of signal quantization effects in dyadic subband tree structures using the gain-plus-additive noise model for the pdf-optimized quantizer. The authors constrain the non-quantized and uncompensated structure to be PR (perfect reconstruction). They develop an equivalent polyphase structure, and compute the MSE (mean square error) using cyclostationary concepts in terms of (1) the allocated quantizer bits, (2) the filter coefficients, and (3) an embedded compensation parameter vector K~. This MSE is then minimized over all three items above. The optimization method is applied to the specific case of a four channel dyadic tree. This tree is represented by an eight channel polyphase equivalent whose interchannel signals are correlated. The design of a 4-tap paraunitary structure is confirmed by simulation.<>

INDEX TERMS

vector quantisation, tree data structures, signal reconstruction, signal resolution, interference (signal), least mean squares methods, digital filters

CITATION

Ginkyu Choi and R. Haddad, "Quantization model for multiresolution dyadic subband tree structure,"

*Proceedings of 1994 28th Asilomar Conference on Signals, Systems and Computers(ACSSC)*, Pacific Grove, CA, USA, 1995, pp. 177-181.

doi:10.1109/ACSSC.1994.471440

CITATIONS