174 search results - page 25 / 35 » On the Signaling Overhead in Dynamic OFDMA Wireless Systems |
ICC
2008
IEEE
14 years 1 months ago
2008
IEEE
—Multiple input multiple output (MIMO) system has been recognized as a promising candidate for future wireless communication. The adaptive modulation which adjusts the transmitte...
ICC
2007
IEEE
14 years 1 months ago
2007
IEEE
- In the paper, we propose an efficient two-factor localized authentication scheme suitable for WLAN roaming. The proposed authentication scheme can greatly improve the security co...
TSP
2008
13 years 7 months ago
2008
Transmit beamforming is an energy-efficient wireless communication technique that allows a transmitter with two or more antennas to focus its bandpass signal in an intended directi...
WINET
2010
13 years 2 months ago
2010
With the technical advances in ubiquitous computing and wireless networking, there has been an increasing need to capture the context information (such as the location) and to figu...
PERCOM
2007
ACM
14 years 7 months ago
2007
ACM
Pervasive Computing envisions distributed applications that optimally leverage the resources present in their ever-changing execution environment. To ease the development of perva...