协作通信中基于链路不平衡的中继激励

doi:10.3969/j.issn.1001-2400.2016.06.003

西安电子科技大学学报

协作通信中基于链路不平衡的中继激励

李钊;蔡沈锦

(西安电子科技大学综合业务网理论及关键技术国家重点实验室，陕西西安 710071)

收稿日期:2015-09-09 出版日期:2016-12-20 发布日期:2017-01-19
作者简介:李钊(1981-)，男，博士，副教授，E-mail: zli@xidian.edu.cn．
基金资助:
国家自然科学基金资助项目(61102057)；高等学校引智计划基金资助项目(B08038)

Relay incentive in cooperative communication by exploiting link imbalance

LI Zhao;CAI Shenjin

(State Key Lab. of Integrated Service Networks, Xidian Univ., Xi'an 710071, China)

Received:2015-09-09 Online:2016-12-20 Published:2017-01-19

摘要/Abstract

摘要：

针对协作通信系统下行链路，提出一种基于链路不平衡的中继激励机制．这种机制为鼓励节点参与协作，对参与数据协作的中继节点给予通信资源回报．与传统的端到端多跳通信中消除瓶颈的设计不同，基于链路不平衡的中继激励机制尝试对由于链路不平衡导致的链路瓶颈进行利用，并通过调整中继节点发射功率按需地对瓶颈的位置和大小进行控制，以两跳链路的数据速率差值作为中继的回报．仿真结果表明，所提机制能够在保证目的用户传输性能的基础上，给予中继节点合理的回报，实现系统频谱效率和中继能量效率的改善．

关键词: 协作通信, 中继, 激励, 能量效率

Abstract:

A relay incentive mechanism based on link imbalance(LIABLE) is proposed for the cooperative downlink communication system. In order to encourage nodes to participate in cooperation, the communication resource is offered as a reward to the relay node that participates in data cooperation. Unlike traditional bottleneck elimination methods in multi-hop end-to-end communication, the LIABLE attempts to make use of the bottleneck caused by link imbalance. Moreover, the location and size of the bottleneck can be controlled on demand by adjusting the relay's transmit power, so that the difference of data rates between two hops can be afforded to the relay as a reward. Simulation results show that the proposed scheme can provide appropriate compensation to the relay node on premise that the destination's transmission performance is guaranteed. In addition, enhancement of the system spectral efficiency and the relay node's energy efficiency can be realized.

Key words: cooperative communication, relay, incentive, energy efficiency

李钊;蔡沈锦. 协作通信中基于链路不平衡的中继激励[J]. 西安电子科技大学学报, 2016, 43(6): 15-20+115.

LI Zhao;CAI Shenjin. Relay incentive in cooperative communication by exploiting link imbalance[J]. Journal of Xidian University, 2016, 43(6): 15-20+115.

参考文献

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协作通信中基于链路不平衡的中继激励

Relay incentive in cooperative communication by exploiting link imbalance

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