Abstract
In this article, in order to substantially improve outage probability (OP), we propose a generalized optimal relays subsets selection algorithm in a cloud-based 6G large-scale relays network. We derive OP based on relays subsets selection for first hop and second hop, respectively. In addition, with the aid of the proposed power allocation method, we put forward optimal relays subsets paring algorithm. The generalized model can be converted into various relays selection algorithms, such as best relay selection, <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">${N}$ </tex-math></inline-formula> th best relay selection, partial relays selection, various relays subsets selection, and so on. Simulation results show that the proposed multiple relays selection algorithm has 2–6 orders of magnitude advantage than existing selection algorithms on OP.
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