基于两步式融合重构的压缩频谱检测方法

闫盛楠

doi:10.11959/j.issn.1000-0801.2015064

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基于两步式融合重构的压缩频谱检测方法

研究与开发 | 更新时间：2024-06-05

- 基于两步式融合重构的压缩频谱检测方法
- A Two-Step Compressed Spectrum Sensing Scheme for Wideband Cognitive Radio
- 电信科学 2015年31卷第3期页码：83-88
- 作者机构：
- 作者简介：
  
  [ "闫盛楠，女，博士，燕山大学信息科学与工程学院讲师，主要研究方向为认知无线电、协作通信技术、压缩感知技术等。" ]
- 基金信息：
  
  国家自然科学基金资助项目;The National Natural Science Foundation of China(51204145);秦皇岛市科学技术研究与发展计划项目;The Science and Technology Research and Development Program of Qinhuangdao(201302A033)
- DOI：10.11959/j.issn.1000-0801.2015064
  中图分类号：
- 网络出版日期：2015-03，
  
  纸质出版日期：2015-03-20
- 稿件说明：
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闫盛楠. 基于两步式融合重构的压缩频谱检测方法[J]. 电信科学, 2015,31(3):83-88.

Shengnan Yan. A Two-Step Compressed Spectrum Sensing Scheme for Wideband Cognitive Radio[J]. Telecommunications science, 2015, 31(3): 83-88.
闫盛楠. 基于两步式融合重构的压缩频谱检测方法[J]. 电信科学, 2015,31(3):83-88. DOI： 10.11959/j.issn.1000-0801.2015064.

Shengnan Yan. A Two-Step Compressed Spectrum Sensing Scheme for Wideband Cognitive Radio[J]. Telecommunications science, 2015, 31(3): 83-88. DOI： 10.11959/j.issn.1000-0801.2015064.

摘要

在宽带频谱检测技术中，针对传统分布式压缩感知方法（DCS）数据传输量大、能耗高的问题，提出了一种基于两步式融合重构的压缩频谱检测（TS-CSS）方法。该方法的数据重构过程分为先支撑集信息融合，后信号联合重构两步，通过支撑集信息融合获得的先验信息可指导信号的联合重构。仿真结果表明，联合重构时随机选择50%的用户参与，即可获得与传统DCS 接近甚至更优的频谱检测性能，因而，该方法能够有效地降低系统数据传输量，节省频谱检测耗能。

Abstract

A two-step compressed spectrum sensing scheme for wideband cognitive radio was proposed in order to reduce the huge data transmission overhead of the traditional DCS scheme.The CS reconstruction of this scheme was divided into two steps

i.e.the information fusion for the support set and the joint recovery of multiple signals

and the prior information obtained from the former step can guide the joint recovery of the latter step.Simulation results show that this scheme can achieve better performance than the traditional DCS scheme as long as 50% of users are involved in the joint recovery

which means that this scheme can reduce the data transmission overhead and save energy consumed greatly.

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references

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