Fast Channel Estimation and Beam Tracking for Millimeter Wave Vehicular Communications

Millimeter wave (mmWave) has been claimed to be the only viable solution for high-bandwidth vehicular communications. However, frequent channel estimation and beamforming required to provide a satisfactory quality of service limits mmWave for vehicular communications. In this paper, we propose a nov...

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Vydáno v:	IEEE access Ročník 7; s. 141104 - 141118
Hlavní autoři:	Shaham, Sina, Ding, Ming, Kokshoorn, Matthew, Lin, Zihuai, Dang, Shuping, Abbas, Rana
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	Piscataway IEEE 2019 The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:	Adaptive algorithms Algorithms Antenna arrays Array signal processing Australia Bandwidths beam tracking Beamforming Channel estimation Complexity theory Computer simulation Data transmission Feedback Jacobi matrix method Lower bounds Mathematical model millimeter wave Millimeter wave communication Millimeter waves multiple-input multiple-output (MIMO) Simulation Tracking
ISSN:	2169-3536, 2169-3536
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Abstract	Millimeter wave (mmWave) has been claimed to be the only viable solution for high-bandwidth vehicular communications. However, frequent channel estimation and beamforming required to provide a satisfactory quality of service limits mmWave for vehicular communications. In this paper, we propose a novel channel estimation and beam tracking framework for mmWave communications in a vehicular network setting. For channel estimation, we propose an algorithm termed robust adaptive multi-feedback (RAF) that achieves comparable estimation performance as existing channel estimation algorithms, with a significantly smaller number of feedback bits. We derive upper and lower bounds on the probability of estimation error (PEE) of the RAF algorithm, given a number of channel estimations, whose accuracy is verified through Monte Carlo simulations. For beam tracking, we propose a new practical model for mmWave vehicular communications. In contrast to the prior works, the model is based on position, velocity, and channel coefficient, which allows a significant improvement of the tracking performance. Focused on the new beam tracking model, we re-derive the equations for Jacobian matrices, reducing the complexity for vehicular communications. An extensive number of simulations is conducted to show the superiority of our proposed channel estimation method and beam tracking algorithm in comparison with the existing algorithms and models. Our simulations suggest that the RAF algorithm can achieve the desired PEE, while on average, reducing the feedback overhead by 75.5% and the total channel estimation time by 14%. The beam tracking algorithm is also shown to significantly improve beam tracking performance, allowing more room for data transmission.
AbstractList	Millimeter wave (mmWave) has been claimed to be the only viable solution for high-bandwidth vehicular communications. However, frequent channel estimation and beamforming required to provide a satisfactory quality of service limits mmWave for vehicular communications. In this paper, we propose a novel channel estimation and beam tracking framework for mmWave communications in a vehicular network setting. For channel estimation, we propose an algorithm termed robust adaptive multi-feedback (RAF) that achieves comparable estimation performance as existing channel estimation algorithms, with a significantly smaller number of feedback bits. We derive upper and lower bounds on the probability of estimation error (PEE) of the RAF algorithm, given a number of channel estimations, whose accuracy is verified through Monte Carlo simulations. For beam tracking, we propose a new practical model for mmWave vehicular communications. In contrast to the prior works, the model is based on position, velocity, and channel coefficient, which allows a significant improvement of the tracking performance. Focused on the new beam tracking model, we re-derive the equations for Jacobian matrices, reducing the complexity for vehicular communications. An extensive number of simulations is conducted to show the superiority of our proposed channel estimation method and beam tracking algorithm in comparison with the existing algorithms and models. Our simulations suggest that the RAF algorithm can achieve the desired PEE, while on average, reducing the feedback overhead by 75.5% and the total channel estimation time by 14%. The beam tracking algorithm is also shown to significantly improve beam tracking performance, allowing more room for data transmission.
Author	Kokshoorn, Matthew Dang, Shuping Ding, Ming Lin, Zihuai Abbas, Rana Shaham, Sina
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SubjectTerms	Adaptive algorithms Algorithms Antenna arrays Array signal processing Australia Bandwidths beam tracking Beamforming Channel estimation Complexity theory Computer simulation Data transmission Feedback Jacobi matrix method Lower bounds Mathematical model millimeter wave Millimeter wave communication Millimeter waves multiple-input multiple-output (MIMO) Simulation Tracking
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Title	Fast Channel Estimation and Beam Tracking for Millimeter Wave Vehicular Communications
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