Capacity of a Gaussian MAC with energy harvesting transmit nodes

Rajesh, R and Deekshith, PK and Sharma, Vinod (2012) Capacity of a Gaussian MAC with energy harvesting transmit nodes. In: 2012 Information Theory and Applications Workshop (ITA), 5-10 Feb. 2012, San Diego, CA.

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Abstract

We consider a Gaussian multiple access channel (GMAC) where the users are sensor nodes powered by energy harvesters. The energy harvesters may have finite or infinite buffer to store the harvested energy. First, we find the capacity region of a GMAC powered by transmit nodes with an infinite energy buffer. Next, we consider a GMAC with the transmitting nodes equipped with a finite energy buffer. Initially we assume perfect knowledge of the buffer state information at both the encoders and the decoder. We provide an achievable region for this case. We also generalize the achievable region when only partial information about buffer state is available at both the encoders and the decoder.

Item Type:	Conference Paper
Publisher:	IEEE
Additional Information:	Copyright of this article belongs to IEEE.
Keywords:	Energy Harvesting; Gaussian Multiple Access Channel; Finite Buffer; Shannon Capacity
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	27 Jan 2014 06:43
Last Modified:	27 Jan 2014 06:43
URI:	http://eprints.iisc.ac.in/id/eprint/48288

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