Wi-Fi设备间节能通信抗频偏数据分组检测

doi:10.11959/j.issn.1000-436x.2016195

通信学报 ›› 2016, Vol. 37 ›› Issue (10): 48-55.doi: 10.11959/j.issn.1000-436x.2016195

Wi-Fi设备间节能通信抗频偏数据分组检测

杨帆¹,梁溪¹,龙柯宇²,蒋李²

¹ 电子科技大学通信与信息工程学院，四川成都 611731
² 中国民用航空局第二研究所，四川成都 610041

出版日期:2016-10-25 发布日期:2016-10-25
基金资助:
国家自然科学基金资助项目;国家自然科学基金资助项目;四川省应用基础研究计划基金资助项目

Anti-frequency-shift packet detection for D2D power-saving communications over Wi-Fi network

Fan YANG¹,Xi LIANG¹,Ke-yu LONG²,Li JIANG²

¹ School of Communication and Information Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China
² The Second Research Institute of Civil Aviation Administration of China,Chengdu 610041,China

Online:2016-10-25 Published:2016-10-25
Supported by:
The National Natural Science Foundation of China;The National Natural Science Foundation of China;The Applied Basic Research Foundation of Science and Technology Department of Sichuan Province

摘要/Abstract

摘要：

提出了一种基于Wi-Fi接口的数据分组检测算法，它在OFDM符号同步定时度量函数中采用一种新型归一化因子作为分母，与传统方法相比，该算法不仅有较高的检测概率，而且阈值的设置无需预先估计频偏。理论分析和仿真结果表明，在AWGN信道中，提出的算法使数据分组检测阈值设置更为灵活。此外，在多径Rayleigh衰落信道下，阈值可以直接根据相应AWGN信道的情形进行设置。

关键词: 绿色通信, D2D, OFDM同步, Wi-Fi, 移动无线网络

Abstract:

An efficient packet detection scheme based on Wi-Fi interface was proposed.It was implemented by employing a novel normalized factor as a denominator in OFDM symbol synchronization-timing metric.Compared to the old-tradition schemes,the proposed scheme can not only obtain great detection probability,but also achieve the threshold setting without pre-estimation of frequency offset.Both theoretical analysis and conducted simulation results show that the new scheme facilitates threshold selection for a wide range of signal-to-noise ratio (SNR) in additive white Gaussian noise (AWGN) channel.Besides,the threshold setting in multi-path Rayleigh fading channels can be determined according to the AWGN case straight forwardly.

Key words: green communication, device-to-device, OFDM synchronization, Wi-Fi, mobile wireless network

杨帆,梁溪,龙柯宇,蒋李. Wi-Fi设备间节能通信抗频偏数据分组检测[J]. 通信学报, 2016, 37(10): 48-55.

Fan YANG,Xi LIANG,Ke-yu LONG,Li JIANG. Anti-frequency-shift packet detection for D2D power-saving communications over Wi-Fi network[J]. Journal on Communications, 2016, 37(10): 48-55.

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Wi-Fi设备间节能通信抗频偏数据分组检测

Anti-frequency-shift packet detection for D2D power-saving communications over Wi-Fi network

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