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Energy Efficiency Maximization for Heterogeneous Networks: A Joint Linear Precoder Design and Small-cell Switching-off Approach

Citation Author(s):
Long D. Nguyen, Trung Q. Duong, Diep N. Nguyen, Le-Nam Tran
Submitted by:
Yan (Lindsay) Sun
Last updated:
7 December 2016 - 10:02am
Document Type:
Poster
Document Year:
2016
Event:
Presenters Name:
Long D. Nguyen

Abstract 

Abstract: 

In heterogeneous networks (HetNets) system, the exploitation of small cells (SCs) will be enhanced spectral efficiency that means guarantee QoS and coverage area to user terminals. We propose a joint linear precoder designproblem to maximize the energy efficiency of the HetNet model. To tackle the cross-tier interference in the HetNets, we exploit zero-forcing precoding where the interference at the users is cancelled out by block diagonalization scheme. A novel group sparsity promoted as group Lasso is proposed using the weighted ℓ1 norm minimization, where the group sparsity pattern indicates those SCs that can be switched off and non-associated users. Simulation results show that the proposed algorithm outperforms many existing algorithms in terms of the total energy efficiency in the HetNets.

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Poster-GLOBALSIP2016 (Long D. Nguyen).pdf

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