24421 search results - page 290 / 4885 » Communicating Complex Systems |
115
Voted
TWC
2008
15 years 3 months ago
2008
Abstract-- This paper presents a reduced-complexity maximum a posteriori probability (MAP) channel estimator with iterative data detection for orthogonal frequency division multipl...
130
Voted
ESA
2007
Springer
15 years 9 months ago
2007
Springer
We study the problem of scheduling transmissions on the downlink of IEEE 802.16/WiMAX systems that use the OFDMA technology. These transmissions are scheduled using a matrix whose...
116
Voted
ICDAR
2003
IEEE
15 years 8 months ago
2003
IEEE
Structure analysis of table form document is important because printed documents and also electronical documents only provide geometrical layout and lexical information explicitly...
133
Voted
FOCS
2006
IEEE
15 years 9 months ago
2006
IEEE
We show that 2-tag systems efficiently simulate Turing machines. As a corollary we find that the small universal Turing machines of Rogozhin, Minsky and others simulate Turing ma...
108
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SP
2009
IEEE
15 years 10 months ago
2009
IEEE
We defeat two proposed Unix file-system race condition defense mechanisms. First, we attack the probabilistic defense mechanism of Tsafrir, et al., published at USENIX FAST 2008[...