Non-Data-Aided Joint Multi-DFO Estimation for High-Mobility OFDM Communication Systems

IF 7.1 2区计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Vehicular Technology Pub Date : 2025-03-05 DOI:10.1109/TVT.2025.3548109

Yunqi Feng;Zhehua Zhu;Weidang Lu;Nan Zhao;Arumugam Nallanathan

引用次数: 0

Abstract

In high-mobility communication systems, the relative motion between the transceivers will cause severe Doppler shifts, resulting in the doubly-selective fading channel. In this correspondence, a non-data-aided joint multiple Doppler frequency offsets (DFOs) estimator is proposed for high-mobility communication with orthogonal frequency division multiplexing (OFDM). Both the receive beamforming and multi-beamformer redundancy are employed to estimate and compensate multiple DFOs, thereby effectively mitigating the channel time-variation. Moreover, the inter-channel interference (ICI) has been derived to further analyze the impact of residual DFOs due to the estimation error on the system performance. Numerical results verify that the proposed non-data-aided estimator substantially outperforms existing ones.

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高移动性OFDM通信系统的盲联合多dfo估计

在高迁移率通信系统中，收发器之间的相对运动将引起严重的多普勒频移，从而导致双选择性衰落信道。针对正交频分复用（OFDM）的高迁移率通信，提出了一种非数据辅助的联合多普勒频偏估计器。采用接收波束形成和多波束成形器冗余来估计和补偿多个dfo，从而有效地减小了信道时变。此外，还推导了信道间干扰（ICI），进一步分析了由于估计误差导致的剩余dfo对系统性能的影响。数值结果验证了所提出的非数据辅助估计器大大优于现有的估计器。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Vehicular Technology 工程技术-电信学

CiteScore

6.00

自引率

8.80%

发文量

1245

审稿时长

6.3 months

期刊介绍： The scope of the Transactions is threefold (which was approved by the IEEE Periodicals Committee in 1967) and is published on the journal website as follows: Communications: The use of mobile radio on land, sea, and air, including cellular radio, two-way radio, and one-way radio, with applications to dispatch and control vehicles, mobile radiotelephone, radio paging, and status monitoring and reporting. Related areas include spectrum usage, component radio equipment such as cavities and antennas, compute control for radio systems, digital modulation and transmission techniques, mobile radio circuit design, radio propagation for vehicular communications, effects of ignition noise and radio frequency interference, and consideration of the vehicle as part of the radio operating environment. Transportation Systems: The use of electronic technology for the control of ground transportation systems including, but not limited to, traffic aid systems; traffic control systems; automatic vehicle identification, location, and monitoring systems; automated transport systems, with single and multiple vehicle control; and moving walkways or people-movers. Vehicular Electronics: The use of electronic or electrical components and systems for control, propulsion, or auxiliary functions, including but not limited to, electronic controls for engineer, drive train, convenience, safety, and other vehicle systems; sensors, actuators, and microprocessors for onboard use; electronic fuel control systems; vehicle electrical components and systems collision avoidance systems; electromagnetic compatibility in the vehicle environment; and electric vehicles and controls.