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

Fan YANG; Xi LIANG; Ke-yu LONG; Li JIANG

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

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

Papers | 更新时间：2024-06-05

- Anti-frequency-shift packet detection for D2D power-saving communications over Wi-Fi network
- Journal on Communications Vol. 37, Issue 10, Pages: 48-55(2016)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
  
  The National Natural Science Foundation of China(61301272);The National Natural Science Foundation of China(61675040);The Applied Basic Research Foundation of Science and Technology Department of Sichuan Province(2014JY0037)
- DOI：10.11959/j.issn.1000-436x.2016195
  CLC： TN92
- Online First：2016-10，
  
  Published：25 October 2016
- 稿件说明：
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Fan YANG, Xi LIANG, Ke-yu LONG, et al. Anti-frequency-shift packet detection for D2D power-saving communications over Wi-Fi network[J]. Journal on Communications, 2016, 37(10): 48-55.
DOI：

Fan YANG, Xi LIANG, Ke-yu LONG, et al. Anti-frequency-shift packet detection for D2D power-saving communications over Wi-Fi network[J]. Journal on Communications, 2016, 37(10): 48-55. DOI： 10.11959/j.issn.1000-436x.2016195.

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。

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.

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references

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