43 search results - page 3 / 9 » Optimal and Suboptimal Power Allocation Schemes for OFDM-bas... |
VTC
2006
IEEE
13 years 11 months ago
2006
IEEE
— This paper introduces a resource allocation strategy which focuses on minimizing power consumption in Orthogonal Frequency Division Multiplexing(OFDM) systems. In case of multi...
TIT
2011
13 years 14 days ago
2011
—Maximization of the weighted sum-rate of secondary users (SUs) possibly equipped with multiantenna transmitters and receivers is considered in the context of cognitive radio (CR...
INFOCOM
2009
IEEE
14 years 5 days ago
2009
IEEE
—In this paper we study the distributed multi-channel power allocation for spectrum sharing cognitive radio networks with QoS guarantee. We formulate this problem as a noncoopera...
GLOBECOM
2007
IEEE
13 years 12 months ago
2007
IEEE
We consider a cognitive radio system where the secondary transmitter varies its transmit power based on all the information available from the spectrum sensor. The operation of th...
GLOBECOM
2009
IEEE
14 years 9 days ago
2009
IEEE
Abstract—Recent studies have been conducted to indicate the ineffective usage of licensed bands due to the static spectrum allocation. In order to improve the spectrum utilizatio...