11927 search results - page 2133 / 2386 » Wireless Sensor Networks |
144
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JCM
2007
15 years 2 months ago
2007
Abstract— In this paper, we propose and evaluate the performance of new link layer frame transmission techniques for MIMO (multiple input multiple output) wireless systems from a...
107
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TPDS
2008
15 years 2 months ago
2008
IEEE 802.15.4 is a new standard uniquely designed for low-rate wireless personal area networks. It targets ultralow complexity, cost, and power for low-rate wireless connectivity a...
120
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TSP
2008
15 years 2 months ago
2008
The problem of transmit beamforming to multiple cochannel multicast groups is considered, when the channel state is known at the transmitter and from two viewpoints: minimizing tot...
108
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TSP
2008
15 years 2 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...
148
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ISCI
2002
15 years 2 months ago
2002
Mobile computing paradigm has emerged due to advances in wireless or cellular networking technology. This rapidly expanding technology poses many challenging research problems in ...