Tajer Ali, Steiner Avi, Shamai Shitz Shlomo
Department of Electrical, Computer, and Systems Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA.
Faculty of Electrical Engineering, Technion-Israel Institute of Technology, Haifa 3200003, Israel.
Entropy (Basel). 2021 Jan 18;23(1):120. doi: 10.3390/e23010120.
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 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.
在本文中，我们回顾了在状态相关信道和网络上进行通信的广播方法的理论和实践原则，其中发射机只能获取时变状态的概率描述，而对其瞬时实现情况并不知晓。当时间变化足够频繁时，一种有效的长期策略是使传输策略适应系统的遍历行为。然而，当变化不频繁时，它们的时间平均值可能会显著偏离信道的遍历模式，从而导致缺乏瞬时性能保证。为了避免缺乏短期保证的问题，[此处缺失相关内容]提供了设计传输方案的原则，这些方案能从短期和长期性能保证中受益。本文概述了在各种操作约束下如何将广播方法应用于各种信道和网络模型。
