Abstract:
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This paper addresses the problem of radio resource
allocation in a multi-user broadcast downlink flat-fading channel,
where the receiving nodes are considered to be battery-powered
devices provided with energy harvesting sources. Models for the
energy consumption of the RF and decoding stages are discussed
and included explicitly in the design of the resource allocation
strategy. The allocation is considered as a theoretical approach,
using the information theoretic rate given by Shannon’s formula.
Bandwidth, power, and data rate are optimized considering
energy-related constraints related to the status of the batteries
in order to increase the lifetime of the users and, thus, the global
network lifetime. Simulation results show that not only the usage
of battery is improved when compared with other traditional
allocation policies, but also the average data rate achieved by the
network nodes is increased. |