The name is absent



pendent measurements, the ^-minimization method performs poorly. However,
it is widely known that variations (power or delay) are spatially correlated; i.e.,
nearby gates are expected to have close variations. Because of the spatial correla-
tions in the variations, there exists a basis in which variations can be represented
sparsely. The sparse representation suggests using the compressive sensing theory.
We show how to use the compressive sensing theory to improve the post-silicon
characterization. We also modify the traditional ^-minimization by adding the
spatial constraint directly. The spatial constraints enforce the nearby gates to
have close variations. The proposed method just uses external input∕output pins
of the IC for the estimation. In the power framework, first, a number of input
vectors are applied to the IC and power consumption is measured for each input
vector. Next, we establish an optimization problem based on the power measure-
ments. Finally, we improve the optimization problem using spatial correlation in
variations. In the delay framework, we follow the same procedure as we did in
the power framework. However, one can measure paths delays just in sensitizable
paths. Thus, here, the optimization problem is constructed based on the delay
measurements in a set of testable basis paths.

The variations can affect various properties in the IC and estimating variations
in an IC suggests a number of applications such as post-silicon optimizations.
Evaluation results verify our method. We showed that, compared to traditional
^-minimization, ^ɪ-regularization can improve variation estimation about 80%

83



More intriguing information

1. The Global Dimension to Fiscal Sustainability
2. The name is absent
3. A parametric approach to the estimation of cointegration vectors in panel data
4. The name is absent
5. The name is absent
6. The Shepherd Sinfonia
7. The resources and strategies that 10-11 year old boys use to construct masculinities in the school setting
8. The name is absent
9. A Principal Components Approach to Cross-Section Dependence in Panels
10. The name is absent
11. Investment and Interest Rate Policy in the Open Economy
12. Does South Africa Have the Potential and Capacity to Grow at 7 Per Cent?: A Labour Market Perspective
13. Proceedings from the ECFIN Workshop "The budgetary implications of structural reforms" - Brussels, 2 December 2005
14. THE USE OF EXTRANEOUS INFORMATION IN THE DEVELOPMENT OF A POLICY SIMULATION MODEL
15. An Empirical Analysis of the Curvature Factor of the Term Structure of Interest Rates
16. NATIONAL PERSPECTIVE
17. The name is absent
18. Cyclical Changes in Short-Run Earnings Mobility in Canada, 1982-1996
19. Evidence-Based Professional Development of Science Teachers in Two Countries
20. Publication of Foreign Exchange Statistics by the Central Bank of Chile