3295 search results - page 344 / 659 » Using Technologies to Improve E-Learning |
167
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GLOBECOM
2007
IEEE
16 years 1 months ago
2007
IEEE
Abstract—Cognitive radio is a key enabling technology of dynamic spectrum access for exploiting unused spectrum resources. This article focuses on modeling the opportunity for ce...
159
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ICC
2007
IEEE
16 years 1 months ago
2007
IEEE
— Cognitive radio has been recently proposed as a promising technology to improve the spectrum utilization efficiency by intelligently sensing and accessing some vacant bands of...
173
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ICC
2007
IEEE
16 years 1 months ago
2007
IEEE
— We address the problem of radio resource allocation in the Downlink (DL) of relay–aided cellular system, based on OFDMA transmission technology. There has been little work on...
147
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ROMAN
2007
IEEE
16 years 29 days ago
2007
IEEE
—This paper proposes a new task selection method for multi-task communication robots. As robot technology improves, communication robots are being used in public places. These co...
164
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SIPS
2007
IEEE
16 years 29 days ago
2007
IEEE
Low Density Parity Check (LDPC) codes are one of the most promising error correction codes that are being adopted by many wireless standards. This paper presents a case study for ...