Peer-Reviewed Journal Details
Mandatory Fields
Bellis S., Marnane W. P., Fish P.
1997
Unknown
Journal of Parallel Algorithms and Applications
Optimal Systolic Arrays for Real-Time Implementation of the Modified Covariance Spectral Estimator
Published
()
Optional Fields
Spectral estimation Doppler ultrasound Modified Covariance method systolic array ALPHA data dependence graph Cholesky decomposition LU decomposition QR decomposition
11
1-2
71
96
The Modified Covariance method of spectral estimation, proposed as a replacement of the conventional short term Fourier transform for use with pulsed Doppler ultrasound blood flow detectors in order to improve time/frequency resolution, is computationally far more demanding. The use of an application specific architecture for real-time implementation is of interest. A cost/benefit selection of systolic arrays, firstly for a matrix solution method with suitable bus width and secondly for calculation of covariance matrix elements, led to the choice of Cholesky matrix decomposition, 12 bit bus width and a bi-linear systolic array designed using a data dependence graph method.
1063-7192
10.1080/10637199708915588
Grant Details