21430 search results - page 3701 / 4286 » Abstract Effective Models |
187
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TWC
2008
15 years 7 months ago
2008
In this paper the tradeoff between energy and delay for wireless networks is studied. A network using a request-to-send (RTS) and clear-to-send (CTS) type medium access control (M...
211
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TWC
2008
15 years 7 months ago
2008
1 . Cooperative transmission has emerged as an effective tool to deal with channel impairments. In this work we study the applicability of amplify-and-forward cooperative transmiss...
200
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TWC
2008
15 years 7 months ago
2008
Using relays in wireless networks can potentially lead to significant capacity increases. However, within an asynchronous multi-user communication setting, relaying might cause mor...
183
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TWC
2008
15 years 7 months ago
2008
The study of the class of new spatial multiplexing architectures (SMAs) is continued. As introduced in Part I of this paper, the SMAs consist of joint design of rate and power all...
201
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UAIS
2008
15 years 7 months ago
2008
This paper presents an approach to automatic course generation and student modeling. The method has been developed during the European funded projects Diogene and Intraserv, focuse...