认知无线电衰落信道的两步协作频谱感知方案

doi:10.13190/j.jbupt.2017-046

北京邮电大学学报 ›› 2017, Vol. 40 ›› Issue (6): 92-97.doi: 10.13190/j.jbupt.2017-046

认知无线电衰落信道的两步协作频谱感知方案

初广前^1,2, 牛凯¹, 吴伟陵¹, 杨芳僚¹

1. 北京邮电大学信息与通信工程学院, 北京 100876;
2. 山东交通学院信息科学与电气工程学院, 济南 250357

收稿日期:2017-04-09 出版日期:2017-12-28 发布日期:2017-12-28
作者简介:初广前(1970-),男,博士生,E-mail:chugq2003@bupt.edu.cn;吴伟陵(1938-),男,教授,博士生导师.
基金资助:
国家自然科学基金项目（61671080，61171099）

Two Step Cooperative Spectrum Sensing Scheme over Fading Channels for Cognitive Radio

CHU Guang-qian^1,2, NIU Kai¹, WU Wei-ling¹, YANG Fang-liao¹

1. School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China;
2. School of Information and Science and Electrical Engineering, Shandong Jiaotong University, Jinan 250357, China

Received:2017-04-09 Online:2017-12-28 Published:2017-12-28
Supported by:

摘要/Abstract

摘要： 针对单天线单用户频谱感知性能严重恶化的问题.为了进一步提高频谱检测性能，减小感知数据传输开销，提出了两步协作频谱感知方案.仿真结果表明，提出的基于平方率合并的软合并两步协作频谱感知方案，克服了多径衰落、阴影衰落和接收机不稳定的问题，大大提高了频谱检测可靠性，具有软合并协作和硬合并协作的优点，减小了网络负载，同时提高了检测性能.

关键词: 两步协作频谱感知, 认知无线电网络, 衰落信道

Abstract: In the cognitive radio network, the performance of spectrum sensing by a single user with a single antenna may degrade significantly. In order to improve the detection performance and reduce spectrum sensing data transmission overhead, a two step cooperative spectrum sensing scheme was proposed. Simulations show that proposed scheme can significantly improve the detection reliability by overcoming multi-path fading, shadowing and the receiver uncertainty problem. The proposed scheme combines the advantages of the soft combination and the hard combination schemes. In addition, it will reduce the network overload and improves the detection performance.

Key words: two steps cooperative spectrum sensing, cognitive radio networks, fading channels

中图分类号:

TN911.22

初广前, 牛凯, 吴伟陵, 杨芳僚. 认知无线电衰落信道的两步协作频谱感知方案[J]. 北京邮电大学学报, 2017, 40(6): 92-97.

CHU Guang-qian, NIU Kai, WU Wei-ling, YANG Fang-liao. Two Step Cooperative Spectrum Sensing Scheme over Fading Channels for Cognitive Radio[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2017, 40(6): 92-97.

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认知无线电衰落信道的两步协作频谱感知方案

Two Step Cooperative Spectrum Sensing Scheme over Fading Channels for Cognitive Radio

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