RPG Seminar – Cross-Layer Resource Allocation in NOMA Systems with Dynamic Traffic Arrivals
Date:
29 Mar, 2021 (Mon)
Time:
10:30 am
Webinar Link:
https://hku.zoom.us/j/92796251093?pwd=dHJLa0NjVkxUK2FFb21pMU5FZDZXUT09

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Speaker

Miss Huiyi Ding
Department of Electrical and Electronic Engineering,
The University of Hong Kong

Abstract

Vehicle-to-everything (V2X) plays an essential role in the smart city. To handle the challenge of low latency and high reliability for recent wireless communication, non-orthogonal multiple access (NOMA) has been considered as a promising candidate for the future V2X systems. Our work proposes a cross-layer resource allocation framework for downlink NOMA systems. A stochastic problem is formulated to minimize the long-term total power consumption with dynamic traffic arrivals under limited feedback. Then, this problem can be transformed to a rate control problem and a mixed-integer programming resource allocation problem solved at each time slot based on the Lyapunov optimization. To reduce the computational complexity, we devise an efficient suboptimal resource allocation algorithm with the dynamic penalty factor. Also, we investigate the problem of the resource allocation for NOMA-V2X communication system. To cope with uncertainties of the dynamic channel information, we propose a reinforcement-learning based resource allocation to find the approximate optimal solutions. The numerical results indicate that our proposed algorithms can significantly reduce the delay compared with other methods while satisfying the QoS requirements, so as to tackle the congestion issues for V2X communication.

 

Zoom Link (during COVID-19 special period):
https://hku.zoom.us/j/92796251093?pwd=dHJLa0NjVkxUK2FFb21pMU5FZDZXUT09
Meeting ID: 927 9625 1093
Password: 915786


Biography of the speaker:

Huiyi Ding received the B.E. degrees from the Hong Kong Polytechnic University, Hong Kong, China in 2017. She is currently pursuing the Ph.D. in Electrical and Electronic Engineering, at the University of Hong Kong. Her research interests include optimization algorithms and signal processing techniques in the general areas of wireless communications.


Organizer

Prof. L.K. Yeung

Most seminars are open to the general public, free of charge, unless otherwise stated. Registration is not required. Arrangement for car parking facilities on campus please contact us for details.

For enquiries, please contact:
Department of Electrical and Electronic Engineering,
Room 601, Chow Yei Ching Building,
Pokfulam Road, Hong Kong
Tel: (852) 3917 7093
Email: seminar@eee.hku.hk