130 search results - page 7 / 26 » Information Access in Africa: Problems with Every Channel |
WIOPT
2011
IEEE
14 years 1 months ago
2011
IEEE
Abstract—This paper considers maximizing throughput utility in a multi-user network with partially observable Markov ON/OFF channels. Instantaneous channel states are never known...
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GLOBECOM
2009
IEEE
15 years 4 months ago
2009
IEEE
—We address the problem of collaborative sensing in cognitive radios. In a cognitive radio network, all the nodes may sense the spectrum simultaneously. They should then exchange...
WOWMOM
2005
ACM
15 years 3 months ago
2005
ACM
Abstract—This paper examines the following wireless data access scenario: a number of clients are interested in a set of data items kept at the server. A client sends a query req...
IJISEC
2008
14 years 9 months ago
2008
We study the multicast stream authentication problem when an opponent can drop, reorder and introduce data packets into the communication channel. In such a model, packet overhead...
CORR
2006
Springer
14 years 9 months ago
2006
Springer
On a multiantenna broadcast channel, simultaneous transmission to multiple users by joint beamforming and scheduling is capable of achieving high throughput, which grows double log...