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Is Backscatter Link Stronger than Direct Link in Reconfigurable Intelligent Surface-Assisted System? | IEEE Journals & Magazine | IEEE Xplore

Is Backscatter Link Stronger than Direct Link in Reconfigurable Intelligent Surface-Assisted System?

Publisher: IEEE

Abstract:

This letter considers integrating a backscatter link with a reconfigurable intelligent surface to enhance backscatter communication while assisting the direct communicati...View more

Abstract:

This letter considers integrating a backscatter link with a reconfigurable intelligent surface to enhance backscatter communication while assisting the direct communication. We derive the probability that the backscatter channel dominates in the composite channel. This probability is a useful performance measure to determine the number of reflectors. Since the exact probability lacks a closed-form solution, we develop two approximations by modeling the gain of the backscatter link with a Gaussian or Gamma distribution. We found that these approximations match well with the exact value. Importantly, with a well-designed number of reflectors, the channel gain of the backscatter link may be always stronger than that of the direct one.
Published in: IEEE Communications Letters ( Volume: 24, Issue: 6, June 2020)
Page(s): 1342 - 1346
Date of Publication: 12 March 2020

ISSN Information:

Publisher: IEEE

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