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» On the Complexity of Error Explanation
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CORR
2011
Springer
185views Education» more  CORR 2011»
14 years 11 months ago
Asymptotic Moments for Interference Mitigation in Correlated Fading Channels
Abstract—We consider a certain class of large random matrices, composed of independent column vectors with zero mean and different covariance matrices, and derive asymptotically ...
Jakob Hoydis, Mérouane Debbah, Mari Kobayas...
TSP
2010
14 years 11 months ago
Channel estimation in wireless OFDM systems with irregular pilot distribution
Abstract--This paper addresses pilot-assisted channel estimation for wireless orthogonal frequency division multiplexing (OFDM) systems with irregular pilot arrangements. Using non...
Peter Fertl, Gerald Matz
STOC
2009
ACM
133views Algorithms» more  STOC 2009»
16 years 4 months ago
New direct-product testers and 2-query PCPs
The "direct product code" of a function f gives its values on all k-tuples (f(x1), . . . , f(xk)). This basic construct underlies "hardness amplification" in c...
Russell Impagliazzo, Valentine Kabanets, Avi Wigde...
ICRA
2003
IEEE
148views Robotics» more  ICRA 2003»
15 years 9 months ago
Needle insertion and radioactive seed implantation in human tissues: simulation and sensitivity analysis
− To facilitate training and planning for medical procedures such as prostate brachytherapy, we are developing an interactive simulation of needle insertion and radioactive seed ...
Ron Alterovitz, Kenneth Y. Goldberg, Jean Pouliot,...
COCO
2009
Springer
119views Algorithms» more  COCO 2009»
15 years 10 months ago
An Approximation Algorithm for Approximation Rank
One of the strongest techniques available for showing lower bounds on quantum communication complexity is the logarithm of the approximation rank of the communication matrix— th...
Troy Lee, Adi Shraibman