Title :
Capacity of a Gaussian MAC with energy harvesting transmit nodes
Author :
Rajesh, R. ; Deekshith, P.K. ; Sharma, Vinod
Author_Institution :
CABS, DRDO, Bangalore, India
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.
Keywords :
Gaussian channels; buffer storage; channel capacity; channel coding; energy harvesting; Gaussian MAC capacity; buffer state information; decoder; encoder; energy harvesting transmit nodes; finite energy buffer; infinite energy buffer; multiple access channel; sensor nodes; Buffer storage; Decoding; Electronic mail; Encoding; Energy harvesting; Markov processes; Receivers; Energy harvesting; Finite Buffer; Gaussian multiple access channel; Shannon capacity;
Conference_Titel :
Information Theory and Applications Workshop (ITA), 2012
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4673-1473-2
DOI :
10.1109/ITA.2012.6181780
