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SP
2008
IEEE
15 years 4 months ago
2008
IEEE
We consider the following problem: how can two devices that do not share any secrets establish a shared secret key over a wireless radio channel in the presence of a communication...
ICICS
2004
Springer
15 years 3 months ago
2004
Springer
In this paper we propose a new strong and perfectly key-insulated signature scheme, more efficient than previous proposals and whose key length is constant and independent of the n...
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PIMRC
2010
IEEE
14 years 7 months ago
2010
IEEE
In a multiuser system, independent time-varying channels among different users can be exploited to provide multiuser diversity (MUD) gain and increase the system throughput. For th...
VTC
2007
IEEE
15 years 4 months ago
2007
IEEE
—This paper presents an opportunistic feedback (OF) protocol that achieves the asymptotic sum-capacity of the fading broadcast channel (BC) with a limited amount of feedback. The...
TWC
2010
14 years 4 months ago
2010
The closed-loop transmit diversity technique is used to improve the performance of the downlink channel in MIMO communication systems. In these closed-loop systems, feedback delay...