IEEE 802.11p 协议下基于交错导频的V2V 信道估计

doi:10.12066/j.issn.1007-2861.2069

Abstract

Abstract:

Vehicle to vehicle (V2V) communication has a more rigorous requirement for channel estimation performance due to its complex and unfavorable channel environment. In this paper, in view of the fact that the pilots in IEEE 802.11p are too poor to accurately track the frequency selective fading channel, a novel channel estimation and tracking scheme based on staggered-layered pilot has been proposed. On the premise of not changing the data transmission efficiency of IEEE 802.11p, this scheme tracks the V2V channel based on the frequency domain interpolation of the estimated channel obtained from the pilots of adjacent symbols according to the high correlation between the channel of adjacent symbols, which outperforms the channel estimation and the tracking scheme based on original pilot in open and high-speed communication scenarios. In the framework of the proposed staggered-layered pilot scheme, selecting the appropriate channel estimation scheme according to the characteristics of different V2V communication scenarios can greatly improve the performance of IEEE 802.11p.

Key words: channel estimation, IEEE 802.11p, vehicle to vehicle (V2V), staggered-layered pilot

CLC Number:

TN911.7

FANG Yong, LIU Chang. Staggered-layered pilot aided channel estimation scheme for IEEE 802.11p[J]. Journal of Shanghai University（Natural Science Edition）, 2020, 26(5): 715-725.

Figures/Tables 9

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References 16

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Staggered-layered pilot aided channel estimation scheme for IEEE 802.11p

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