3095 search results - page 245 / 619 » Ubiquitous presence systems |
153
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CHI
2010
ACM
16 years 1 months ago
2010
ACM
To supplement existing forms of communication such as telephone and e-mail, this research proposes a new method of communicating “awareness” between people who are separated b...
169
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ICC
2007
IEEE
16 years 1 months ago
2007
IEEE
—Cooperative diversity is effectively used to combat the correlated fading. In the existing papers on cooperative diversity, the fading channels are idealistically assumed to be ...
204
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ICC
2007
IEEE
16 years 1 months ago
2007
IEEE
— This paper describes a combined modulation scheme for time hopping ultra wideband (TH-UWB) radio systems using on-off keying (OOK) and pulse shape modulation (PSM). For this sc...
178
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ICC
2007
IEEE
16 years 1 months ago
2007
IEEE
— Multiple-input multiple-output (MIMO) systems that realize a high-speed data transmission with multiple antennas at both transmitter and receiver are drawing much attention. In...
188
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ICPP
2007
IEEE
16 years 1 months ago
2007
IEEE
– Anonymous communication systems built on P2P infrastructures using anonymity forwarders are frequently affected by the churn problem, i.e. frequent joins and leaves of nodes. T...