单向放大转发中继D2D 通信系统可达速率分析与联合功率优化

doi:10.3969/j.issn.0255-8297.2014.06.002

应用科学学报 ›› 2014, Vol. 32 ›› Issue (6): 559-565.doi: 10.3969/j.issn.0255-8297.2014.06.002

单向放大转发中继D2D 通信系统可达速率分析与联合功率优化

倪艺洋，邵世祥，朱洪波

南京邮电大学江苏省无线通信重点实验室，南京210003

收稿日期:2014-02-26 修回日期:2014-04-02 出版日期:2014-11-28 发布日期:2014-04-02
作者简介:倪艺洋，博士生，研究方向：未来移动通信系统中的协作通信技术，E-mail: niyy@njupt.edu.cn；朱洪波，教授，博导，研究方法：移动通信与宽带无线技术、无线通信与电磁兼容、通信工程，E-mail: zhuhb@njupt.edu.cn
基金资助:
国家科技重大专项基金(No.2011ZX03005-004-03)；国家“973”重点基础研究发展计划基金(No.2013CB329005)；国家自然科
学基金(No.61171093)；江苏省优势学科建设项目基金(No.YX002001)资助

Pareto-Optimal Power Allocation of Device-to-Device Communication with One-Way Amplify-and-Forward Relay Node

NI Yi-yang, SHAO Shi-xiang, ZHU Hong-bo

Jiangsu Key Laboratory of Wireless Communications, Nanjing University of Posts and Telecommunications, Nanjing 210003, China

Received:2014-02-26 Revised:2014-04-02 Online:2014-11-28 Published:2014-04-02

摘要/Abstract

摘要： 描述了基于放大转发中继underlay 模式下的D2D 传输模型，研究了用户最大发射功率受限前提下利用
单向放大转发中继的D2D 通信系统功率分配方法. 首先从D2D 系统端到端信干噪比表达出发，推导出D2D 链
路和蜂窝上下行链路的可达和速率，据此建立了可达和速率的联合功率优化模型，根据功率约束条件将双目标优
化模型转化为单目标优化模型；然后采用Pareto 优化方法最大化可达和速率，并提出相应的低复杂度实现算法.
仿真结果表明：在中低信噪比区域，基于放大转发中继辅助的D2D 通信性能显著优于传统D2D 通信模式，采用
Pareto 功率优化方法可进一步提升D2D 通信以及蜂窝上下行链路的系统可达和速率.

关键词: D2D 通信, 放大转发, 可达和速率, 联合功率分配, Pareto 优化

Abstract: In this paper, we describe the D2D communication strategy assisted by a relay node using a
one-way amplify-and-forward (AF) protocol for the underlay mode. Based on this strategy we propose a
joint-power allocation scheme to maximize the rate of both D2D and cellular link with the constraint of peruser’s
maximum transmit power. To achieve this goal, we derive an expression for the achievable sum-rate
of each link according to the signal-to-interference-plus-noise expressions of end-to-end uplink and downlink.
According to these expressions, we set up an optimization model for jointly power allocation to maximum an
achievable sum-rate. For this model, we transform the dual-objective function into a single-objective function
and propose a low complexity joint-power allocation scheme by using the Pareto-optimal method to maximize
the achievable sum-rate. Numerical results show that a higher gain of the sum-rate of the D2D link can be
obtained by using the relay aided strategy in low and intermediate signal-to-noise regimes as compared with
that of the traditional D2D mode. It is also shown that the power optimal scheme can further be improved for
the achievable sum-rate of D2D and cellular links by using the Pareto-optimal method.

Key words: D2D communication, amplify-and-forward, achievable sum-rate, joint-power allocation, Paretooptimal

中图分类号:

TN92

倪艺洋，邵世祥，朱洪波. 单向放大转发中继D2D 通信系统可达速率分析与联合功率优化[J]. 应用科学学报, 2014, 32(6): 559-565.

NI Yi-yang, SHAO Shi-xiang, ZHU Hong-bo. Pareto-Optimal Power Allocation of Device-to-Device Communication with One-Way Amplify-and-Forward Relay Node[J]. Journal of Applied Sciences, 2014, 32(6): 559-565.

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单向放大转发中继D2D 通信系统可达速率分析与联合功率优化

Pareto-Optimal Power Allocation of Device-to-Device Communication with One-Way Amplify-and-Forward Relay Node

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