77 Papers
182 Citations
Qi Zhang is an academic researcher from Nanjing University of Posts and Telecommunications. The author has contributed to research in topics: Computer science & MIMO. The author has an hindex of 12, co-authored 35 publications. Previous affiliations of Qi Zhang include University of Electronic Science and Technology of China & Nanjing University.
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Papers
•Posted Content
Power Allocation Schemes for Multicell Massive MIMO Systems
TL;DR: In this paper, the sum-rate gains brought by power allocation strategies in multicell massive MIMO systems, assuming time-division duplex transmission, were investigated for both uplink and downlink, and tractable expressions for the achievable rate with zero-forcing receivers and precoders respectively.
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Power Allocation of Superimposed Pilots for URLLC With Short-Packet Transmission in IIoT
TL;DR: In this paper , a superimposed pilot-aided uplink transmission system in industrial scenarios is considered, where each actuator sends short-packet messages containing a superimposition of pilot and data signals to the central controller.
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Mott-Schottky Effect in Core-Shell W@Wx C Heterostructure: Boosting Both Electronic/Ionic Kinetics for Lithium Storage.
TL;DR: In this paper , the core-shell W@Wx C heterostructure is developed to form Mott-Schottky heterostructures, thereby simultaneously accelerating the electronic and ionic transport kinetics during the charging/discharging process.
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Comparison of Massive MIMO and Small Cells in HetNet with LoS and NLoS Transmissions
Qi Zhang,Howard H. Yang,Tony Q. S. Quek,Jemin Lee +3 more
- 01 Jul 2017
TL;DR: It is found that adding small cells into a sparse network improves the achievable rate much faster than expanding antenna arrays at the macro BS, and the massive MIMO is preferred for higher rate requirements due to better achievable rate.
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Abundant Lithiophilic VO2/V8C7 Heterostructures Boost Charge Transfer toward High‐Rate Lithium Storage
Yinhong Gao,Xu Nan,Rong Zhao,Bing Sun,Wenli Xu,Qiqi Li,Ye Cong,Yanjun Li,Wei Lv,Qi Zhang,Xuanke Li,Nianjun Yang +11 more
TL;DR: Researchers develop VO2/V8C7 nano-heterostructures anchored on carbon nanofibers, enhancing lithium anode performance through rapid Li+ ion diffusion and charge transfer, achieving high-rate capability and uniform Li deposition with a reversible specific capacity of 674.8 mA h g−1.
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