198 search results - page 34 / 40 » Opportunistic interference alignment in MIMO interference ch... |
ICC
2009
IEEE
14 years 2 months ago
2009
IEEE
— In cellular networks, relays and/or mobiles can cooperate to improve the overall system performance. For example, once the transmission from a base station with multiple antenn...
ICC
2009
IEEE
14 years 2 months ago
2009
IEEE
— In this paper, we derive a precise expression of spatial degrees of freedom (DOF) for two mutually interfering broadcast channels (IFBC) as a function of arbitrary numbers of t...
TWC
2010
13 years 2 months ago
2010
Abstract--In this paper we investigate the opportunistic spectrum access in temporal domain where a secondary user shares a radio channel with a primary user during the OFF period ...
ICASSP
2011
IEEE
12 years 11 months ago
2011
IEEE
Consider a robust downlink beamforming optimization problem for secondary multicast transmission in a multiple-input multiple-output (MIMO) spectrum sharing cognitive radio (CR) n...
GLOBECOM
2009
IEEE
14 years 2 months 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...