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Sparse code multiple access (SCMA) has been presented as a promising solution for uplink transmission since it enables random access so that the pre-establishment of link can be omitted. However, this randomness could cause codebook collision when different users pick the same codebook. Though the message passing algorithm (MPA) is employed to decode nonorthogonal codewords to lower the complexity,...
Designing optimal strategies to deploy small cell stations is crucial to meet the quality-of-service requirements in next-generation cellular networks with constrained deployment costs. In this paper, a general deployment framework is proposed to jointly optimize the locations of backhaul aggregate nodes, small base stations, machine aggregators, and multi-hop wireless backhaul links to accommodate...
In this letter, a novel approach for optimizing the joint deployment of small cell base stations and wireless backhaul links is proposed. This joint deployment scenario is cast as a multiobjective optimization problem under the constraints of limited backhaul capacity and outage probability. To address the problem, a novel adaptive algorithm that integrates $\epsilon$-method, Lagrangian relaxation,...
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