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TSP
2010
13 years 2 months ago
A recursive method for the approximation of LTI systems using subband processing
Using the subband technique, an LTI system can be implemented by the composition of an analysis filterbank, followed by a transfer matrix (subband model) and a synthesis filterbank...
Damián Marelli, Minyue Fu
IKE
2003
13 years 9 months ago
A Statistics-Based Approach to Incrementally Update Inverted Files
Many information retrieval systems use the inverted file as indexing structure. The inverted file, however, is not suited to supporting incremental updates when new documents are ...
Wann-Yun Shieh, Chung-Ping Chung
TON
2008
159views more  TON 2008»
13 years 7 months ago
Optimizing lifetime for continuous data aggregation with precision guarantees in wireless sensor networks
This paper exploits the tradeoff between data quality and energy consumption to extend the lifetime of wireless sensor networks. To obtain an aggregate form of sensor data with pre...
Xueyan Tang, Jianliang Xu
TSP
2008
100views more  TSP 2008»
13 years 7 months ago
Optimal Two-Stage Search for Sparse Targets Using Convex Criteria
We consider the problem of estimating and detecting sparse signals over a large area of an image or other medium. We introduce a novel cost function that captures the tradeoff bet...
Eran Bashan, Raviv Raich, Alfred O. Hero III
INFOCOM
2008
IEEE
14 years 2 months ago
End-to-End Resource Allocation in OFDM Based Linear Multi-Hop Networks
— We study the end-to-end resource allocation in an OFDM based multi-hop network consisting of a one-dimensional chain of nodes including a source, a destination, and multiple re...
Xiaolu Zhang, Wenhua Jiao, Meixia Tao