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ICALP
2009
Springer
16 years 6 months ago
Towards Optimal Range Medians
We consider the following problem: given an unsorted array of n elements, and a sequence of intervals in the array, compute the median in each of the subarrays defined by the inter...
Beat Gfeller, Peter Sanders
GLOBECOM
2007
IEEE
16 years 27 days ago
Maximum Likelihood Detection and Optimal Code Design for Differential Unitary Space-Time Modulation with Carrier Frequency Offse
Abstract— In this paper, we answer the question that “Can conventional differential unitary space time modulation (DUSTM) be applied when there is an unknown carrier frequency ...
Tao Cui, Feifei Gao, Arumugam Nallanathan, Chintha...
AICT
2006
IEEE
122views Communications» more  AICT 2006»
16 years 19 days ago
Optimizing and Balancing Load in Fully Distributed P2P File Sharing Systems
A peer-to-peer file sharing system includes a lookup and a content distribution protocol. Very efficient peer-to-peer protocols exist for content distribution, but efficient in...
Anh-Tuan Gai, Laurent Viennot
ADBIS
1998
Springer
100views Database» more  ADBIS 1998»
15 years 10 months ago
Multiple Range Query Optimization in Spatial Databases
In order to answer efficiently range queries in 2-d R-trees, first we sort queries by means of a space filling curve, then we group them together, and finally pass them for process...
Apostolos Papadopoulos, Yannis Manolopoulos
SOFSEM
1997
Springer
15 years 10 months ago
Time Optimal Self-Stabilizing Algorithms
: In this paper we rst present a general lower bound on the stabilization time which holds for a number of graph theoretic problems, including leader election, spanning tree constr...
Rastislav Kralovic