携能通信协作认知网络稳态吞吐量分析和优化

doi:10.3969/j.issn.1001-2400.2016.06.001

西安电子科技大学学报

• 研究论文 • 下一篇

携能通信协作认知网络稳态吞吐量分析和优化

阔永红;贺冰涛;陈健

(西安电子科技大学通信工程学院，陕西西安 710071)

收稿日期:2015-06-27 出版日期:2016-12-20 发布日期:2017-01-19
作者简介:阔永红(1967-), 女，教授，博士，E-mail：yhkuo@mail.xidian.edu.cn．
基金资助:
国家自然科学基金资助项目(61440056)；高等学校学科创新引智计划资助项目(B08038)

Stable-throughput analysis and optimization of cooperative cognitive radio networks based on information and energy cooperation

KUO Yonghong;HE Bingtao;CHEN Jian

(School of Telecommunications Engineering, Xidian Univ., Xi'an 710071, China)

Received:2015-06-27 Online:2016-12-20 Published:2017-01-19

摘要/Abstract

摘要：

在携能通信协作认知网络中，针对主用户和认知用户的非饱和数据传输问题，研究主用户网络和认知用户网络稳态吞吐量之间的相互作用关系，并对认知网络进行稳态吞吐量的优化．首先，提出一种“概率协作”的传输策略，采用排队论的方法对该场景进行网络层建模和分析，求解出系统的稳态吞吐量域，并以此反映主用户网络和认知用户网络的相互作用关系．其次，通过求解“概率协作”策略中认知用户的最优协作传输概率，在保证主用户系统稳定的情况下，最大化认知用户的稳态吞吐量．仿真结果和分析表明，采用“概率协作”的传输策略能使认知用户获得最大的稳态吞吐量，同时，主用户网络相比于无协作时的系统性能也有了较大的提升．

关键词: 携能通信, 认知无线电, 协作通信, 稳态吞吐量

Abstract:

According to the unsaturated data traffic in wireless communications, this paper studies the interaction between primary users (PUs) and secondary users (SUs) in a cooperative cognitive radio network which is based on information and energy cooperation, and optimizes the stable-throughput of SUs. A probabilistic cooperation scheme has been proposed and the stable-throughput region has been characterized in order to reflect the interaction between PUs and SUs by using the Queuing Theory. Then by deriving the optimal value of the relaying probability, the stable-throughput of secondary users can be maximized under the constraint of the primary queue stability. Simulation results and theoretical analysis show that the probabilistic cooperation scheme can achieve maximal stable-throughputs for SUs, and meanwhile PUs can also have a better performance compared to the non-cooperative case.

Key words: simultaneous wireless information and power transfer, cognitive radio, cooperative communication, stable-throughput

阔永红;贺冰涛;陈健. 携能通信协作认知网络稳态吞吐量分析和优化[J]. 西安电子科技大学学报, 2016, 43(6): 1-7.

KUO Yonghong;HE Bingtao;CHEN Jian. Stable-throughput analysis and optimization of cooperative cognitive radio networks based on information and energy cooperation[J]. Journal of Xidian University, 2016, 43(6): 1-7.

参考文献

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携能通信协作认知网络稳态吞吐量分析和优化

Stable-throughput analysis and optimization of cooperative cognitive radio networks based on information and energy cooperation

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