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ISN
1998
Springer
14 years 7 days ago
1998
Springer
An expectation of a signature system is that a signatory cannot dispute a signature. Aiming at this, the following questions arise: Can documents in electronic commerce on the Inte...
MOBIQUITOUS
2008
IEEE
14 years 3 months ago
2008
IEEE
Location-based services in general require information about the position of certain objects. For instance, for a navigation service the position of the user needs to be known. Th...
TCOM
2010
13 years 3 months ago
2010
Joint carrier frequency offset (CFO) and channel estimation for uplink MIMO-OFDMA systems over time-varying channels is investigated. To cope with the prohibitive computational co...
WCNC
2010
IEEE
14 years 7 days ago
2010
IEEE
—Cooperative communications exploit the spatial diversity inherent in multiuser system by allowing cooperation among users having a wide range of channel qualities. How to search...
MOBIHOC
2012
ACM
11 years 11 months ago
2012
ACM
Dynamic spectrum access is a maturing technology that allows next generation wireless devices to make highly efficient use of wireless spectrum. Spectrum can be allocated on an o...