9490 search results - page 1489 / 1898 » Slow Intelligence Systems |
200
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TWC
2010
15 years 1 months ago
2010
We consider a system with a single base station communicating with multiple users over orthogonal channels while being assisted by multiple relays. Several recent works have sugge...
212
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TWC
2010
15 years 1 months ago
2010
Abstract--Impulse Radio Ultra WideBand (IR-UWB) communication has proven to be an important technique for supporting high-rate, short-range, and low-power communication. In this pa...
196
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TWC
2010
15 years 1 months ago
2010
In this paper, we evaluate the performance of a Medium Access Control (MAC) protocol for MIMO ad hoc networks under imperfect channel estimation. To this end, we also present an an...
220
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TWC
2010
15 years 1 months ago
2010
User cooperation, whereby multiple users share their antennas and transmit to a common destination in a collaborative manner, has been shown to be an effective way to achieve spat...
148
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TWC
2010
15 years 1 months ago
2010
Online Charging System (OCS) supports multiple prepaid and postpaid sessions simultaneously. Through credit reservation, the OCS assigns some credit units to a session. These credi...