Implementation of an online DCT based time-varying delay estimator using systolic arrays
| Autor: | Samir Shaltaf, Moussa Abdallah, Souheil F. Odeh |
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| Rok vydání: | 2003 |
| Předmět: |
General Computer Science
Small number Process (computing) Estimator Systolic array Signal Control and Systems Engineering Computer Science::Multimedia Electronic engineering Discrete cosine transform Electrical and Electronic Engineering Likelihood function Algorithm Group delay and phase delay Mathematics |
| Zdroj: | Computers & Electrical Engineering. 29:613-624 |
| ISSN: | 0045-7906 |
| DOI: | 10.1016/s0045-7906(01)00051-9 |
| Popis: | Time-delay estimation process is developed in the transform domain where discrete cosine transform (DCT) coefficients of time-varying delay signals are estimated. The DCT is very efficient in compacting the signal energy in a small number of coefficients. Hence, estimation of time-varying delay is obtained through calculation of small number of DCT coefficients. Online maximum likelihood estimator of time-varying delay is developed in which coefficients of the transformed delay signal are obtained by maximizing the likelihood function in terms of these DCT coefficients. A systolic array architecture is designed to implement the developed algorithm. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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