The Broadcast Approach in Communication Networks
1
Department of Electrical, Computer, and Systems Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
2
Faculty of Electrical Engineering, Technion—Israel Institute of Technology, Haifa 3200003, Israel
*
Author to whom correspondence should be addressed.
†
The authors contributed equally to this work.
Academic Editor: S. Sandeep Pradhan
Entropy 2021, 23(1), 120; https://doi.org/10.3390/e23010120
Received: 24 November 2020
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Revised: 12 January 2021
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Accepted: 13 January 2021
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Published: 18 January 2021
(This article belongs to the Special Issue Multiuser Information Theory III)
In this paper we review the theoretical and practical principles of the broadcast approach to communication over state-dependent channels and networks in which the transmitters have access to only the probabilistic description of the time-varying states while remaining oblivious to their instantaneous realizations. When the temporal variations are frequent enough, an effective long-term strategy is adapting the transmission strategies to the system’s ergodic behavior. However, when the variations are infrequent, their temporal average can deviate significantly from the channel’s ergodic mode, rendering a lack of instantaneous performance guarantees. To circumvent a lack of short-term guarantees, the broadcast approach provides principles for designing transmission schemes that benefit from both short- and long-term performance guarantees. This paper provides an overview of how to apply the broadcast approach to various channels and network models under various operational constraints.
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Keywords:
broadcast; broadcast channel; channel state information; degradedness; interference channel; multiple-access channel; networks; relay; slow-fading; superposition coding
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MDPI and ACS Style
Tajer, A.; Steiner, A.; Shamai, S. The Broadcast Approach in Communication Networks. Entropy 2021, 23, 120. https://doi.org/10.3390/e23010120
AMA Style
Tajer A, Steiner A, Shamai S. The Broadcast Approach in Communication Networks. Entropy. 2021; 23(1):120. https://doi.org/10.3390/e23010120
Chicago/Turabian StyleTajer, Ali, Avi Steiner, and Shlomo Shamai. 2021. "The Broadcast Approach in Communication Networks" Entropy 23, no. 1: 120. https://doi.org/10.3390/e23010120
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