3356 search results - page 449 / 672 » Thresholds and Expectation Thresholds |
186
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ICC
2007
IEEE
16 years 29 days ago
2007
IEEE
Abstract— We propose a power and constellation-size adaptation scheme for the multicast system employing multilevel quadrature amplitude modulation (MQAM) with discrete constella...
162
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ICC
2007
IEEE
16 years 29 days ago
2007
IEEE
— In multiuser systems, multiuser diversity gains can be achieved by assigning channels to users with higher channel quality. To avoid the extensive information exchange required...
180
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ICC
2007
IEEE
16 years 29 days ago
2007
IEEE
Abstract— Securing broadcast communication over sensor networks is an important research challenge. In general, broadcast communication has two important metrics: security and re...
183
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ICC
2007
IEEE
16 years 29 days ago
2007
IEEE
Abstract— In wireless cellular systems, capacity can be increased if both in-cell and out-of-cell cochannel interference (CCI) is properly handled. Moreover, spatial multiplexing...
159
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ICC
2007
IEEE
16 years 29 days ago
2007
IEEE
—Optical communication through the atmosphere possibly enables high data rate communication. However, the optical field undergoes fades or outages due to air turbulence. Spatial ...