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Optimal Linear Coding For A Multichannel System, Kyong-Hwa Lee
Optimal Linear Coding For A Multichannel System, Kyong-Hwa Lee
Electrical and Computer Engineering ETDs
This paper is concerned with the problem of obtaining the optimal linear vector coding (transformation) method that matches an r-dimensional vector signal and a k-dimensional channel under a given channel power constraint. the encoder converts the r correlated random variables into r independent random variables and selects at most k independent random variables which correspond to the k largest eigenvalues of the signal covarience matrix Q. The encoder reinserts cross-correlation into the k random variables in such a way that the largest eigenvalue of Q is assigned to the smallest eigenvalue of the channel noise covarience matrix R and the …
The Use Of A General-Purpose Heat Transfer Code For Casting Simulation, William Carl Erickson
The Use Of A General-Purpose Heat Transfer Code For Casting Simulation, William Carl Erickson
Electrical and Computer Engineering ETDs
The practical use of numerical techniques in simulating casting solidification dictate that a general purpose heat transfer code be used and that results be obtained in an easy-to-analyze format. Color film plotting routines were developed for use with NASA's CINDA-3G heat transfer code; the combination of which meet the above criteria. The subroutine LQSLTR written for SINDA, the successor to CINDA-3G, was verified by comparing calculated results obtained using LQSLTR with those obtained using the specific heat method for handling the heat of fusion. Excellent agreement existed when similar data was used. When the more restrictive requirement of a 1° …