Z
Zheng Chang
Researcher at University of Jyväskylä
Publications - 150
Citations - 3532
Zheng Chang is an academic researcher from University of Jyväskylä. The author has contributed to research in topics: Resource allocation & Efficient energy use. The author has an hindex of 28, co-authored 137 publications receiving 2574 citations. Previous affiliations of Zheng Chang include Information Technology University & Xidian University.
Papers
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Journal ArticleDOI
Average Age of Information in Wireless Powered Mobile Edge Computing System
TL;DR: Considering a wireless powered MEC system, the average age of information (AoI) is studied, which is a crucial performance metric to measure the freshness of information.
Proceedings ArticleDOI
Multi-Antenna Covert Communication With Jamming in the Presence of a Mobile Warden
TL;DR: In this paper, the authors proposed a covert communication scheme against a mobile warden, which maximizes the connectivity throughput between a multi-antenna transmitter and a full-duplex jamming receiver with the covert outage probability (COP) limit.
Proceedings ArticleDOI
Energy efficiency of Unicast Support Multicast with QoS guarantee
Zheng Chang,Tapani Ristaniemi +1 more
TL;DR: Numerical results based on the conducted theoretical analysis demonstrate that power consumption is reduced with USM while fulfilling the data rate and decoding requirements, and the energy efficiency of USM is superior compared to pure multicast transmission.
Proceedings ArticleDOI
Asymmetric resource allocation for collaborative relay OFDMA networks with imperfect CSI
TL;DR: This paper considers the problem of asymmetric radio resource allocation, where the objective is to maximize the system throughput of the source-to-destination link under various constraints and derives theoretical expressions for the solutions and illustrates them through simulations.
Book ChapterDOI
Dynamic Resource Allocation and Computation Offloading for Edge Computing System
TL;DR: In this article, a joint computation offloading, radio and computational resource allocation algorithm based on Lyapunov optimization is proposed to minimize the energy consumption of the considered system, where the main problem is divided into several subproblems at each time slot and are addressed separately.