复合衰落信道下分布式天线系统D2D下层通信的能效优化

IF 0.5 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Radioengineering Pub Date : 2022-09-01 DOI:10.13164/re.2022.0440

G. Y. Wang, A. Dhaka, T. Teng, K. Yu

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引用次数: 1

摘要

设备到设备（D2D）通信是提高通信网络的频谱和能量效率（EE）的潜在技术。在本文中，我们研究了具有设备到设备底层通信的上行链路分布式天线系统（DAS）中的节能功率分配（PA）方案。我们的目标是最大化所有D2D对的总EE，同时保证蜂窝用户和D2D链路的数据速率和发射功率要求。为了解决这一非凸约束优化问题，我们基于凹凸过程和分式规划理论，提出了一种高效的近似最优PA算法。这种近似最优算法可以实现接近最优穷举搜索的EE性能。为了降低复杂度，我们进一步提出了一种有效的次优算法和天线选择方法，可以获得闭合形式的功率分配表达式。仿真结果表明，我们提出的PA方案具有显著的EE性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Energy Efficiency Optimization for D2D Underlay Communication in Distributed Antenna System over Composite Fading Channels

. Device-to-Device (D2D) communication is a potential technology to improve the spectral and energy efficiency (EE) of communication networks. In this paper, we study energy-efficient power allocation (PA) schemes in uplink distributed antenna system (DAS) with device-to-device underlay communication. Our goal is to maximize the total EE of all D2D pairs while guaranteeing the data rate and transmit power requirements of the cellular user and D2D links. To solve this non-convex constrained optimization problem, we propose an energy-efficient near-optimal PA algorithm based on the concave-convex procedure and fractional programming theory. This near-opti-mal algorithm can achieve the EE performance close to the optimal exhaustive search. To reduce the complexity, we furthermore present an efficient sub-optimal algorithm with the antenna selection method which can obtain the closed-form power allocation expressions. Simulation results demonstrate the significant EE performance of our proposed PA schemes.

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来源期刊

Radioengineering 工程技术-工程：电子与电气

CiteScore

2.00

自引率

9.10%

发文量

审稿时长

5.7 months

期刊介绍： Since 1992, the Radioengineering Journal has been publishing original scientific and engineering papers from the area of wireless communication and application of wireless technologies. The submitted papers are expected to deal with electromagnetics (antennas, propagation, microwaves), signals, circuits, optics and related fields. Each issue of the Radioengineering Journal is started by a feature article. Feature articles are organized by members of the Editorial Board to present the latest development in the selected areas of radio engineering. The Radioengineering Journal makes a maximum effort to publish submitted papers as quickly as possible. The first round of reviews should be completed within two months. Then, authors are expected to improve their manuscript within one month. If substantial changes are recommended and further reviews are requested by the reviewers, the publication time is prolonged.