Energy-Efficiency Gains of Caching for Interference Channels

Energy-Efficiency Gains of Caching for Interference Channels

This letter initiates the study of energy-efficiency gains provided by caching. We focus on the cache-aided Gaussian interference channel in the low-SNR regime. We propose a strategy that creates content overlaps at the transmitter caches to allow for co-operation between the transmitters. This co-o...

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Bibliographic Details
Published in:IEEE communications letters Vol. 22; no. 7; pp. 1434 - 1437
Main Authors: Hachem, Jad, Niesen, Urs, Diggavi, Suhas
Format: Journal Article
Language:English
Published: IEEE 01-07-2018
Subjects:
Array signal processing
content distribution networks
Interference channels
Libraries
Multicast communication
Network coding
Receivers
Transmitters
wireless networks
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Summary:This letter initiates the study of energy-efficiency gains provided by caching. We focus on the cache-aided Gaussian interference channel in the low-SNR regime. We propose a strategy that creates content overlaps at the transmitter caches to allow for co-operation between the transmitters. This co-operation yields a beamforming gain, which has to be traded off against a multicasting gain. We evaluate the performance of this strategy and show its approximate optimality in both the single-receiver case and the single-transmitter case.
ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2018.2822694