Leveraging discrete modulation and liquid metal antennas for interference reduction

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 interf...

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Bibliographic Details
Published in:EURASIP journal on wireless communications and networking 2021-07, Vol.2021 (1), p.1-21, Article 158
Main Authors: Baig, Mirza Uzair, Elassy, Kareem S., Høst-Madsen, Anders, Ohta, Aaron T., Shiroma, Wayne A., Nosratinia, Aria
Format: Article
Language:English
Subjects:
Antennas
Communications Engineering
Discrete modulation
Engineering
Information Systems Applications (incl.Internet)
Information theory
Interdisciplinary aspects
Interference
Interference channel
Liquid metal antenna
Liquid metals
Lower bounds
Modulation
Networks
Noise
Random variables
Reduction (metal working)
Signal processing
Signal,Image and Speech Processing
Signaling
Simulation
Treating interference as noise (TIN)
Wireless networks
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Summary: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.
ISSN:1687-1499
1687-1472
1687-1499
DOI:10.1186/s13638-021-02019-w