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

Abstract

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

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

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