512 search results - page 13 / 103 » Random Access Systems with a Time Varying Channel |
151
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GLOBECOM
2007
IEEE
15 years 10 months ago
2007
IEEE
— In this paper we evaluate outage performance of a cooperative transmission protocol over fading channels that requires a number of relaying nodes to employ a distributed space-...
133
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TCOM
2010
15 years 2 months ago
2010
Abstract—This paper considers an uplink time division multiple access (TDMA) cognitive radio network where multiple cognitive radios (secondary users) attempt to access a spect...
170
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MOBICOM
2009
ACM
15 years 10 months ago
2009
ACM
Establishing a control channel for medium access control is a challenging problem in multi-channel and dynamic spectrum access (DSA) networks. In the design of multi-channel MAC p...
126
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INFOCOM
2003
IEEE
15 years 9 months ago
2003
IEEE
— Channel-aware scheduling strategies, such as the Proportional Fair algorithm for the CDMA 1xEV-DO system, provide an effective mechanism for improving throughput performance in...
113
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VTC
2006
IEEE
15 years 10 months ago
2006
IEEE
- An initial timing offset estimation method for orthogonal frequency-division multiplexing (OFDM) systems is proposed. Conventional preamble-based synchronization methods result i...