509 search results - page 25 / 102 » Rate Adaptive Channel MAC |
103
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INFOCOM
2011
IEEE
14 years 3 months ago
2011
IEEE
—Generating a shared key between two parties from the wireless channel is of increasing interest. The procedure for obtaining information from wireless channel is called channel ...
129
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JSAC
2006
14 years 12 months ago
2006
In mobile wireless networks, dynamic allocation of resources such as transmit powers, bit-rates, and antenna beams based on the channel state information of mobile users is known t...
GLOBECOM
2006
IEEE
15 years 6 months ago
2006
IEEE
Abstract— For multi-user orthogonal frequency division multiplexing (OFDM) systems, efficient optimal rate and power allocation algorithms are presented via geometric programmin...
109
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GLOBECOM
2006
IEEE
15 years 6 months ago
2006
IEEE
— We study coding and modulation rate adaptation problem for HARQ systems with partially observable state from cross-layer viewpoint. The rate of convolutionally coded MQAM is ad...
109
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JSAC
2007
14 years 11 months ago
2007
— Channel state information (CSI) is important for achieving large rates in MIMO channels. However, in timevarying MIMO channels, there is a tradeoff between the time/energy spen...