512 search results - page 13 / 103 » Random Access Systems with a Time Varying Channel |
GLOBECOM
2007
IEEE
14 years 5 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-...
TCOM
2010
13 years 9 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...
MOBICOM
2009
ACM
14 years 5 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...
INFOCOM
2003
IEEE
14 years 4 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...
VTC
2006
IEEE
14 years 4 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...