512 search results - page 15 / 103 » Random Access Systems with a Time Varying Channel |
ICC
2007
IEEE
14 years 5 months ago
2007
IEEE
— Current OFDM systems assume the channel is not time varying within one OFDM frame, and use channel estimates obtained from preamble or pilots for data symbols within the same f...
SIGMETRICS
2010
ACM
14 years 3 months ago
2010
ACM
Dynamic Spectrum Access systems exploit temporarily available spectrum (‘white spaces’) and can spread transmissions over a number of non-contiguous sub-channels. Such methods...
INFOCOM
2003
IEEE
14 years 4 months ago
2003
IEEE
— We consider the problem of scheduling packets over a number of channels with time varying connectivity. Policies proposed for this problem either stabilize the system when the ...
CDC
2008
IEEE
14 years 5 months ago
2008
IEEE
Abstract— In this paper, we consider the problem of stabilizing sufficiently smooth nonlinear time-invariant plants over a network whereby feedback is closed through a limitedba...
ICC
2007
IEEE
14 years 5 months ago
2007
IEEE
— Generalized selection multiuser diversity (GSMuD) is a new scheduling scheme which provides a near-optimal low-complexity solution to parallel access multiuser scheduling. In t...