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ICASSP
2009
IEEE
16 years 1 months ago
Shrinkage estimation of high dimensional covariance matrices
We address covariance estimation under mean-squared loss in the Gaussian setting. Specifically, we consider shrinkage methods which are suitable for high dimensional problems wit...
Yilun Chen, Ami Wiesel, Alfred O. Hero
ICASSP
2009
IEEE
16 years 1 months ago
DOA estimation of quasi-stationary signals via Khatri-Rao subspace
This paper addresses the problem of direction-of-arrival (DOA) estimation of quasi-stationary signals, which finds applications in array processing of speech and audio. By studyi...
Wing-Kin Ma, Tsung-Han Hsieh, Chong-Yung Chi
ICC
2009
IEEE
210views Communications» more  ICC 2009»
16 years 1 months ago
Multi-User Joint Subchannel and Power Resource-Allocation for Powerline Relay Networks
Abstract—This paper investigates Orthogonal FrequencyDivision Multiple-Access (OFDMA) resource-allocation schemes for two-hop relays in a home Powerline Communication (PLC) netwo...
Hao Zou, Aakanksha Chowdhery, Sumanth Jagannathan,...
QEST
2009
IEEE
16 years 1 months ago
Safety Analysis of an Airbag System Using Probabilistic FMEA and Probabilistic Counterexamples
—Failure mode and effects analysis (FMEA) is a technique to reason about possible system hazards that result from system or system component failures. Traditionally, FMEA does no...
Husain Aljazzar, Manuel Fischer, Lars Grunske, Mat...
QSHINE
2009
IEEE
16 years 1 months ago
Joint Optimization of System Lifetime and Network Performance for Real-Time Wireless Sensor Networks
Maximizing the aggregate network utility and minimizing the network energy consumption are important but conflict goals in wireless sensor networks. Challenges arise due to the app...
Lei Rao, Xue Liu, Jian-Jia Chen, Wenyu Liu