Now showing items 1-10 of 291
Architectures for a CORDIC SVD Processor
(SPIE - The International Society for Optical Engineering, 1986-08-21)
Architectures for systolic array processor elements for calculating the singular value decomposition (SVD) are proposed. These special purpose VLSI structures incorporate the coordinate rotation (CORDIC) algorithms to diagonalize 2X2 submatrices of a large array. The area-time complexity of the proposed architectures is analyzed along with topics ...
The Teichmüller Theory of Harmonic Maps
(Journal of Differential Geometry, 1989)
Efficient Solution of a Toeplitz-Plus-Hankel Coefficient Matrix System of Equations
Frequently in signal processing one is faced with situations where a large system of linear equations, with a Toeplitz or a Hankel coefficient matrix, needs to be solved. One efficient way of solving these kinds of equations is by Levinson recursion. The Levinson recursion does not require explicit storage of the Toeplitz (or Hankel) coefficient ...
Laboratory Workstations in Electrical Engineering
Computers, configured for data acquisition and control, have been used in undergraduate laboratories at Cornell University's School of Electrical Engineering since the early 1970s. The introduction of personal computers in the introductory laboratory course sequence (Fall/Spring of Junior Year) has permitted a dramatic expansion of this practice. ...
Synthesis of Linear Multivariable Regulators
This paper generalizes the results obtained by the authors in  and presents new results on the construction of proper controllers for linear multivariable regulators. These results appear to lead to efficient computational methods that do not involve Smith forms nor the order relations used in  to construct proper controllers. The methods are ...
Improving the Resolution of Bearing in Passive Sonar Arrays by Eigenvalue Analysis
A method of improving the bearing-resolving capabilities of a passive array is discussed. This method is an adaptive beamforming method, having many similarities to the minimum energy approach. The evaluation of energy in each steered beam is preceded by an eigenvalue-eigenvector analysis of the emperical correlation matrix. Modification of the ...
Magnitude Weighting and Time Segmentation for Phase-Only Reconstruction of Signals
Phase-only reconstruction of signals and its application to blind-deconvolution were introduced recently by Oppenheim, and by Hayes, et.al. In this report, we briefly present another description of this phase-only reconstruction, propose a new magnitude weighted reconstruction and show how these ideas can be applied to the deconvolution of segmented data.
Dynamic Memory Interconnections for Rapid Access
Certain aspects of bulk storage technology development have required the study of dynamic memory interconnections. Various schemes to interconnect physical storage locations have been proposed in the literature. Taking into consideration the fact that dynamic memories are characterised by a small number of i/o ports, these schemes attempt to minimise ...
Comparison of Measured and Calculated Antenna Patterns for the Islote Heater
This report presents the comparison between calculated and measured values of the radiation pattern produced by the antenna array of the Arecibo HF heating facility, located 17 km and 32.6° NE of the Arecibo Observatory in Puerto Rico. Provided are a calculated map of the pattern of the Islote heater for a fixed altitude at a frequency of 5.1 MHz, ...
CORDIC Arithmetic for an SVD Processor
Arithmetic issues in the calculation of the Singular Value Decomposition (SVD) are discussed. Traditional algorithms using hardware division and square root are replaced with the special purpose CORDIC algorithms for computing vector rotations and inverse tangents. The CORDIC 2 x 2 SVD processor can be twice as fast as one assembled from traditional ...