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Leveraging discrete modulation and liquid metal antennas for interference reduction

Authors
  • Baig, Mirza Uzair1
  • Elassy, Kareem S.1
  • Høst-Madsen, Anders1
  • Ohta, Aaron T.1
  • Shiroma, Wayne A.1
  • Nosratinia, Aria2
  • 1 University of Hawaii at Manoa, Honolulu, HI, 96822, USA , Honolulu (United States)
  • 2 University of Texas at Dallas, Richardson, TX, 75080, USA , Richardson (United States)
Type
Published Article
Journal
EURASIP Journal on Wireless Communications and Networking
Publisher
Springer International Publishing
Publication Date
Jul 15, 2021
Volume
2021
Issue
1
Identifiers
DOI: 10.1186/s13638-021-02019-w
Source
Springer Nature
Keywords
Disciplines
  • Research
License
Green

Abstract

Recent progress in the understanding of the behavior of the interference channel has led to valuable insights: first, discrete signaling has been discovered to have tangible benefits in the presence of interference, especially when one does not wish to decode the interfering signal, i.e., the interference is treated as noise, and second, the capacity of the interference channel as a function of the interference link gains is now understood to be highly irregular, i.e., non-monotonic and discontinuous. This work addresses these two issues in an integrated and interdisciplinary manner: it utilizes discrete signaling to approach the capacity of the interference channel by developing lower bounds on the mutual information under discrete modulation and treating interference as noise, subject to an outage set, and addresses the issue of sensitivity to link gains with a liquid metal reconfigurable antenna to avoid the aforementioned outage sets. Simulations illustrate the effectiveness of our approach.

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