| 多带联合检测在OFDM频谱感知中的应用 |
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| 引用本文： | 邓丽粼,张翠芳,周兴建,石云中.多带联合检测在OFDM频谱感知中的应用[J].计算机工程,2010,36(1):131-133. |
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| 作者姓名： | 邓丽粼 张翠芳 周兴建 石云中 |
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| 作者单位： | 1. 西南交通大学信息科学与技术学院,成都,610031
2. 中国西南电子技术研究所,成都,610036 |
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| 摘 要： | 针对传统频谱感知方法局限在单个频带上的问题，介绍一种多带联合检测的频谱感知方法。以正交频分复用系统为背景，基于能量检测方法，联合多个频带选取最优门限向量，使其在总干扰受限的情况下，总吞吐量达到最大。仿真结果表明，与传统使用一致门限值的多带检测方法相比，该方法的有效性得到提高。
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| 关 键 词： | 认知无线电 频谱感知 联合检测 正交频分复用 |
| 修稿时间： | |
Application of Multi-band Joint Detection in OFDM Spectrum Sensing |
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| DENG Li-lin,ZHANG Cui-fang,ZHOU Xing-jian,SHI Yun-zhong.Application of Multi-band Joint Detection in OFDM Spectrum Sensing[J].Computer Engineering,2010,36(1):131-133. |
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| Authors: | DENG Li-lin ZHANG Cui-fang ZHOU Xing-jian SHI Yun-zhong |
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| Affiliation: | (1. School of Information Science & Technology, Southwest Jiaotong University, Chengdu 610031; 2. Southwest China Institute of Electronic Technology, Chengdu 610036) |
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| Abstract: | Aiming at the problem that conventional spectrum sensing technique is usually focused on signal band, this paper introduces a multi-band joint detection spectrum sensing scheme for Orthogonal Frequency Division Multiplexing(OFDM) system, which jointly detects a bank of multiple narrow-bands based on the energy detection in order to maximize the aggregate opportunistic throughput in an interference limited cognitive radio network. Simulation results show that the performance of multi-band joint detection scheme is improved compared with the conventional sensing method which uses the same threshold over multiple frequency bands. |
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| Keywords: | cognitive radio spectrum sensing joint detection Orthogonal Frequency Division Multiplexing(OFDM) |
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