Sciweavers

6800 search results - page 363 / 1360
» On optimizing collective communication
Sort
View
SODA
2004
ACM
87views Algorithms» more  SODA 2004»
15 years 8 months ago
Optimal space lower bounds for all frequency moments
We prove that any one-pass streaming algorithm which ( , )-approximates the kth frequency moment Fk, for any real k = 1 and any = 1 m , must use 1 2 bits of space, where m is th...
David P. Woodruff
CORR
2010
Springer
109views Education» more  CORR 2010»
15 years 7 months ago
Pairwise Optimal Discrete Coverage Control for Gossiping Robots
Abstract-- We propose distributed algorithms to automatically deploy a group of robotic agents and provide coverage of a discretized environment represented by a graph. The classic...
Joseph W. Durham, Ruggero Carli, Francesco Bullo
ICASSP
2011
IEEE
14 years 10 months ago
On optimal precoding in wireless multicast systems
Precoding has been extensively studied for point-to-point communications, including the problems of constructing the precoding codebook and selecting the best precoder. This paper...
Yiyue Wu, Haipeng Zheng, A. Robert Calderbank, San...
ICC
2007
IEEE
190views Communications» more  ICC 2007»
16 years 1 months ago
Minimum Energy Data Gathering in Correlated Sensor Networks with Cooperative Transmission
— We consider combination of Distributed Source Coding (DSC) and cooperative transmission techniques to improve energy efficiency in sensor networks. To start with we formulate ...
Laxminarayana S. Pillutla, Vikram Krishnamurthy
GLOBECOM
2007
IEEE
16 years 1 months 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...