PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Rights accessRestricted access - publisher's policy
In this paper, we focus on a broadcast multiuser
multiple-input multiple-output (MIMO) system in a network
with short links. In this scenario we consider that some
terminals harvest power and, thus, recharge their batteries,
through wireless power transfer from the transmitter while
others are simultaneously being served with data transmission.
We assume that the nodes are battery powered devices and,
consequently, such solution provides a convenient energy supply.
The sum-rate for the users being served with data is considered
as the optimization policy where power harvesting per user
constraints are taken into account. We provide the optimal
structure of the resulting transmit covariance matrices and
precoders for the users in the general case (i.e., in scenarios
where both types of nodes are present in the network) and we
also study the case where only harvesting nodes are to be served.
Finally, we analyze and characterize the fundamental tradeoff
between the data transmission sum-rate and the powers
harvested by the network nodes using the concept of the rateenergy
CitationRubio, J., Pascual Iserte, A. Simultaneous wireless information and power transfer in multiuser MIMO systems. A: IEEE Global Communications Conference. "2013 IEEE Globecom Workshops (GC Wkshps) took place 9-13 December 2013 in Atlanta, GA, USA". Atlanta: Institute of Electrical and Electronics Engineers (IEEE), 2013, p. 2777-2782.
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