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ICASSP
2011
IEEE
14 years 10 months ago
Analysis of the pilot contamination effect in very large multicell multiuser MIMO systems for physical channel models
We consider multicell multiuser MIMO systems with a very large number of antennas at the base station. We assume that the channel is estimated by using uplink training sequences, ...
Hien Quoc Ngo, Thomas L. Marzetta, Erik G. Larsson
ICASSP
2011
IEEE
14 years 10 months ago
Towards robust word discovery by self-similarity matrix comparison
Word discovery is the task of discovering and collecting occurrences of repeating words in the absence of prior acoustic and linguistic knowledge, or training material. The capabi...
Armando Muscariello, Guillaume Gravier, Fré...
ICASSP
2011
IEEE
14 years 10 months ago
Robust changepoint detection based on multivariate rank statistics
We introduce a novel statistical test for unsupervised detection of changepoints in multidimensional sequences of temporal observations. The test statistic is based on a multivari...
Alexandre Lung-Yut-Fong, Céline Lévy...
FM
2011
Springer
357views Formal Methods» more  FM 2011»
14 years 10 months ago
TraceContract: A Scala DSL for Trace Analysis
Abstract. In this paper we describe TRACECONTRACT, an API for trace analysis, implemented in the SCALA programming language. We argue that for certain forms of trace analysis the b...
Howard Barringer, Klaus Havelund
JMLR
2012
13 years 9 months ago
SpeedBoost: Anytime Prediction with Uniform Near-Optimality
We present SpeedBoost, a natural extension of functional gradient descent, for learning anytime predictors, which automatically trade computation time for predictive accuracy by s...
Alexander Grubb, Drew Bagnell