一种基于切换失败概率和认知用户信道容量联合优化的访问策略

许蒙迪; 金明; 童景文

doi:10.11959/j.issn.1000-0801.2016217

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一种基于切换失败概率和认知用户信道容量联合优化的访问策略

研究与开发 | 更新时间：2024-06-05

- 一种基于切换失败概率和认知用户信道容量联合优化的访问策略
- A channel visiting strategy based on joint optimization of probability of handoff failure and capacity of secondary user
- 电信科学 2016年32卷第9期页码：82-88
- 作者机构：
- 作者简介：
  
  [ "许蒙迪(1992-)，男，宁波大学信息科学与工程学院硕士生，主要研究方向为认知无线电中的多用户接入技术等。" ]
  [ "金明(1981-)，男，博士，宁波大学信息科学与工程学院副教授，主要研究方向为认知无线电技术和阵列信号处理等。" ]
  [ "童景文(1991-)，男，宁波大学信息科学与工程学院硕士生，主要研究方向为认知无线电中的频谱感知方法等。" ]
- 基金信息：
  
  国家自然科学基金资助项目;The National Natural Science Foundation of China(61301152);国家自然科学基金资助项目;The National Natural Science Foundation of China(61571250);宁波市自然科学基金资助项目;Ningbo Natural Science Foundation of China(2016A610058);浙江省信息与通信工程重中之重学科开放基金资助项目;Zhejiang Open Foundation of the Most Important Subjects of Information and Communication Engineering(xkx11402)
- DOI：10.11959/j.issn.1000-0801.2016217
  中图分类号： TP929.5
- 网络出版日期：2016-09，
  
  纸质出版日期：2016-09-15
- 稿件说明：
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许蒙迪, 金明, 童景文. 一种基于切换失败概率和认知用户信道容量联合优化的访问策略[J]. 电信科学, 2016,32(9):82-88.

Mengdi XU, Ming JIN, Jingwen TONG. A channel visiting strategy based on joint optimization of probability of handoff failure and capacity of secondary user[J]. Telecommunications science, 2016, 32(9): 82-88.
许蒙迪, 金明, 童景文. 一种基于切换失败概率和认知用户信道容量联合优化的访问策略[J]. 电信科学, 2016,32(9):82-88. DOI： 10.11959/j.issn.1000-0801.2016217.

Mengdi XU, Ming JIN, Jingwen TONG. A channel visiting strategy based on joint optimization of probability of handoff failure and capacity of secondary user[J]. Telecommunications science, 2016, 32(9): 82-88. DOI： 10.11959/j.issn.1000-0801.2016217.

摘要

现有频谱切换信道访问策略主要考虑切换失败概率，而较少考虑认知用户的信道容量。针对这一问题，提出了一种基于切换失败概率和认知用户信道容量联合优化的频谱切换信道访问策略。首先证明了按信噪比降序访问可以得到最大的认知用户信道容量，而按信道平均空闲时间降序访问可以得到最低切换失败概率。接着提出对信道平均空闲时间和信噪比进行排序并加权合并的非参数化处理。最后，按非参数化处理结果降序进行信道访问。结果表明，所提方法能够在切换失败概率接近最低的情况下，使认知用户信道容量提升50%左右。

Abstract

The available channel visiting strategy for spectrum handoff mainly considers the probability of handoff failure more than the channel capacity.Aiming at the problem

anovel spectrum suitching channel visiting strategy was proposed based on the probability of handoff failure and the channel capacity foins optimixing of secondary user.It was proved that the maximum channel capacity of secondary user can be obtained by visiting the channel in the descending order of the signal to noise ratio(SNR)

and the minimum probability of handoff failure couldbe obtained in the descending order of the mean vacant time duration.Then the mean vacant time of channel and SNR for sorting and weighted combination was processed of non-parameterization.At last

the channel was visited in descending order according to the result of non parametric processing.The numerical results show that the proposed method can increase the channel capacity of secondary user by about 50%

while keeping the probability of handoff failure close to the minimum.

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references

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