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ISCI
2007
115views more  ISCI 2007»
15 years 1 months ago
Compressed histograms with arbitrary bucket layouts for selectivity estimation
Selectivity estimation is an important step of query optimization in a database management system, and multidimensional histogram techniques have proved promising for selectivity ...
Dennis Fuchs, Zhen He, Byung Suk Lee
JSAC
2007
111views more  JSAC 2007»
15 years 1 months ago
MIMO Broadcast Scheduling with Limited Feedback
Abstract— We consider multiuser scheduling with limited feedback of partial channel state information in MIMO broadcast channels. By using spatial multiplexing at the base statio...
Wei Zhang, Khaled Ben Letaief
CORR
2010
Springer
115views Education» more  CORR 2010»
14 years 10 months ago
Approximately achieving Gaussian relay network capacity with lattice codes
Abstract--Recently, it has been shown that a quantize-mapand-forward scheme approximately achieves (within a constant number of bits) the Gaussian relay network capacity for arbitr...
Ayfer Özgür, Suhas N. Diggavi
TSP
2011
170views more  TSP 2011»
14 years 8 months ago
Low-Delay Prediction- and Transform-Based Wyner-Ziv Coding
—This paper studies low-delay Wyner–Ziv coding, i.e., lossy source coding with side information at the decoder, with emphasis on the extreme of zero delay. To achieve zero dela...
Xuechen Chen, Ertem Tuncel
TCOM
2010
85views more  TCOM 2010»
14 years 7 months ago
Achieving the rate-distortion bound with low-density generator matrix codes
It is shown that binary low-density generator matrix codes can achieve the rate-distortion bound of discrete memoryless sources with general distortion measure via multilevel quant...
Zhibin Sun, Mingkai Shao, Jun Chen, Kon Max Wong, ...