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This work studies energy efficiency (EE) of multiple-input and multiple-output (MIMO) underlay spectrum sharing, where rate splitting at the secondary transmitter and successive decoding at the secondary receiver is deployed when feasible. EE of the secondary transmission is optimized while satisfying the primary rate requirement and the secondary power constraint. EE is defined as the ratio of the...
Femto base stations constitute a promising solution to cope with the dramatic increase in mobile data traffic, but they also contribute to increase the network power consumption. Traditionally, full power transmissions are used to satisfy the users' data rate demands, causing interference to neighboring cells. Cell breathing can reduce the total transmit power by adjusting the cell size to the traffic...
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