Optimum design of vector-quantzed subband codecs
- Authors
- Jee, I.; Haddad, R.A.
- Issue Date
- 1998
- Citation
- IEEE Transactions on Signal Processing, v.46, no.8, pp.2239 - 2243
- Journal Title
- IEEE Transactions on Signal Processing
- Volume
- 46
- Number
- 8
- Start Page
- 2239
- End Page
- 2243
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/27771
- DOI
- 10.1109/78.705449
- ISSN
- 1053-587X
- Abstract
- This correspondence provides an approach for representing an optimum vector quantizer by a scalar nonlinear gain-plus-additive noise model. The validity and accuracy of this analytic model is confirmed by comparing the calculated model quantization errors with actual simulation of the optimum Linde-Buzo-Gray (LBG) vector quantizer. Using this model, we form MSE measure of an M-band filter bank codec in terms of the equivalent scalar quantization model and find the optimum FIR filter coefficients for each channel in the M-band structure for a given bit rate, given filter length, and given input signal correlation model. Specific design examples are worked out for four-tap filters in the two-band paraunitary case. These theoretical results are confirmed by extensive Monte Carlo simulation. © 1998 IEEE.
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Collections - College of Science and Technology > Department of Computer and Information Communications Engineering > 1. Journal Articles
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