Abstract | ||
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We consider the achievable average rates of a multiple-access system, which consists of N energy-harvesting users (EHUs) that transmit information over a block fading multiple-access channel (MAC) and a base station (BS) that broadcasts radio frequency (RF) energy to the EHUs for wireless power transfer. The information (over the uplink) and power (over the downlink) can be transmitted either in time division duplex or frequency division duplex. For the case when the EHUs' battery capacities and the number of transmission slots are both infinite, we determine the optimal power allocation for the BS and the optimal rates and power allocations for the EHUs that maximize the achievable rate region of the MAC. The resulting online solution is asymptotically optimal and also applicable for a finite number of transmission slots and finite battery capacities. |
Year | DOI | Venue |
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2014 | 10.1109/LCOMM.2014.2355198 | Communications Letters, IEEE |
Keywords | Field | DocType |
channel allocation,energy harvesting,fading channels,frequency division multiple access,inductive power transmission,time division multiple access,EHU,RF energy,achievable rate region,base station,battery capacities,block fading MAC,block fading multiple-access channel,energy-harvesting users,frequency division duplex,multiple-access system,optimal power allocation,radio frequency energy,time division duplex,transmission slots,wireless power transfer,Multiuser channels,energy harvesting,fading channels,multiplexing,wireless power transfer | Base station,Wireless power transfer,Computer science,Fading,Communication channel,Computer network,Energy harvesting,Radio frequency,Time division multiple access,Telecommunications link | Journal |
Volume | Issue | ISSN |
18 | 10 | 1089-7798 |
Citations | PageRank | References |
10 | 0.73 | 7 |
Authors | ||
3 |
Name | Order | Citations | PageRank |
---|---|---|---|
Zoran Hadzi-Velkov | 1 | 307 | 31.37 |
Nikola Zlatanov | 2 | 540 | 33.58 |
Robert Schober | 3 | 8448 | 488.41 |