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» Communicating Under Channel Uncertainty
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INTERSENSE
2006
ACM
14 years 3 months ago
Multipath virtual sink architecture for wireless sensor networks in harsh environments
Wireless sensor networks are expected to be deployed in harsh environments characterized by extremely poor and fluctuating channel conditions. With the generally adopted single-s...
Winston Khoon Guan Seah, Hwee Pink Tan
JSAC
2011
215views more  JSAC 2011»
13 years 5 months ago
Opportunistic Spectrum Sharing Schemes for CDMA-Based Uplink MAC in Cognitive Radio Networks
—We consider a wireless cognitive radio network in which a set of secondary users (SUs) opportunistically utilize the wireless spectrum licensed to the primary users (PUs) to tra...
Xi Zhang, Hang Su
ICASSP
2011
IEEE
13 years 1 months ago
Cooperation strategies for secrecy in MIMO relay networks with unknown eavesdropper CSI
We investigate secure communications for a four-node relayeavesdropper channel with multiple data stream transmission, assuming that the eavesdropper’s channel state information...
Jing Huang, A. Lee Swindlehurst
PODC
2012
ACM
12 years 11 days ago
On the price of equivocation in byzantine agreement
In the Byzantine agreement problem, a set of n processors, any f of whom may be arbitrarily faulty, must reach agreement on a value proposed by one of the correct processors. It i...
Alexander Jaffe, Thomas Moscibroda, Siddhartha Sen
MOBISYS
2010
ACM
14 years 9 days ago
Energy-efficient rate-adaptive GPS-based positioning for smartphones
Many emerging smartphone applications require position information to provide location-based or context-aware services. In these applications, GPS is often preferred over its alte...
Jeongyeup Paek, Joongheon Kim, Ramesh Govindan