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2011
IEEE

Broadcasting with a battery limited energy harvesting rechargeable transmitter

8 years 3 months ago
Broadcasting with a battery limited energy harvesting rechargeable transmitter
—We consider the minimization of the transmission completion time with a battery limited energy harvesting transmitter in a two-user AWGN broadcast channel. The transmitter has fixed number of packets for each receiver and energy is modeled to arrive (be harvested) at the transmitter at random instants. The battery at the transmitter has a finite storage capacity, hence energy may overflow without being utilized for data transmission. We derive the optimal offline transmission policy that minimizes the time by which all of the data packets are delivered to their respective destinations. We analyze the structural properties of the optimal transmission policy using a dual problem. We find the optimal total transmit power sequence by a directional water-filling algorithm. We prove that there exists a cut-off power level such that if the allocated power is lower than this level, then only the stronger user is served in that epoch; otherwise, the power above this level is allocated ...
Omur Ozel, Jing Yang, Sennur Ulukus
Added 22 Aug 2011
Updated 22 Aug 2011
Type Journal
Year 2011
Where WIOPT
Authors Omur Ozel, Jing Yang, Sennur Ulukus
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