Joint energy efficiency and spectral efficiency optimization algorithm for UDN under the restriction of interference threshold and backhaul capacity

Xuanli WU; Xu CHEN

doi:10.11959/j.issn.1000-436x.2019205

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Joint energy efficiency and spectral efficiency optimization algorithm for UDN under the restriction of interference threshold and backhaul capacity

Papers | 更新时间：2024-06-05

- Joint energy efficiency and spectral efficiency optimization algorithm for UDN under the restriction of interference threshold and backhaul capacity
- Journal on Communications Vol. 40, Issue 12, Pages: 86-97(2019)
- 作者机构：
  
  哈尔滨工业大学通信技术研究所，黑龙江哈尔滨150080
- 作者简介：
- 基金信息：
  
  The National Natural Science Foundation of China(61671179);The National Basic Research Program of China (973 Program)(2013CB329003)
- DOI：10.11959/j.issn.1000-436x.2019205
  CLC： TN929.5
- Online First：2019-12，
  
  Published：25 December 2019
- 稿件说明：
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Xuanli WU, Xu CHEN. Joint energy efficiency and spectral efficiency optimization algorithm for UDN under the restriction of interference threshold and backhaul capacity[J]. Journal on Communications, 2019, 40(12): 86-97.
DOI：

Xuanli WU, Xu CHEN. Joint energy efficiency and spectral efficiency optimization algorithm for UDN under the restriction of interference threshold and backhaul capacity[J]. Journal on Communications, 2019, 40(12): 86-97. DOI： 10.11959/j.issn.1000-436x.2019205.

摘要

针对回程干扰门限与链路容量限制下的超密集网络（UDN）场景，提出了一种基于整数线性规划和拉格朗日对偶分解的能量效率与频谱效率联合优化算法。所提算法首先将回程容量限制下的用户归属问题建模为整数线性规划（ILP）问题，基于动态规划的思想设计算法求解该问题，从而完成用户与微基站的连接；在此基础上，利用拉格朗日对偶分解，通过基于迭代的资源分配算法实现频谱资源和功率的分配。仿真结果表明，相较于传统算法，所提算法能显著提升系统的能量效率和频谱效率，同时可以更充分地利用微基站的业务承载能力。

Abstract

Aiming at the scenarios which consider the constraint of backhaul capacity restriction and interference threshold in ultra-dense networks (UDN)

an integer linear programming (ILP) and Lagrangian dual decomposition (LDD) based joint optimization algorithm of energy efficiency and spectrum efficiency was proposed.In the proposed algorithms

the user association problem with the constraint of limited backhaul capacity was modelled as an ILP problem and then finished the connection between the user and the base station of microcell by solving this problem with dynamic programming method.Therefor

Lagrangian dual decomposition (LDD) was applied in an iteration algorithm for spectrum resource allocation and power allocation.The simulation results show that compared with traditional schemes

the proposed algorithm can significantly improve the energy efficiency and spectrum efficiency of system and use the microcell’s load capacity more efficiently.

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references

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