552 citations · 733 across the 11 of their papers we have counts for
5 papers · 1 filter
Energy Management and Cross Layer Optimization for Wireless Sensor Network Powered by Heterogeneous Energy Sources
Weiqiang Xu, Yushu Zhang, Qingjiang Shi +1
Recently, utilizing renewable energy for wireless system has attracted extensive attention. However, due to the instable energy supply and the limited battery capacity, renewable e…
Dynamic Optimization For Heterogeneous Powered Wireless Multimedia Sensor Networks With Correlated Sources and Network Coding
Weiqiang Xu, Yushu Zhang, Qingjiang Shi +1
The energy consumption in wireless multimedia sensor networks (WMSN) is much greater than that in traditional wireless sensor networks. Thus, it is a huge challenge to remain the p…
Cross-Layer Control for Worse Case Delay Guarantees in Heterogeneous Powered Wireless Sensor Network via Lyapunov Optimization
Weiqiang Xu, Jianchen Tu, Qingjiang Shi
The delay guarantee is a challenge in wireless sensor networks (WSNs), where energy constraints must be considered. The coexistence of renewable energy and electricity grid is expe…
Distributed Energy Efficient Cross-layer Optimization for Multihop MIMO Cognitive Radio Networks with Primary User Rate Protection
Weiqiang Xu, Wenchu Yuan, Qingjiang Shi +2
Due to the unique physical-layer characteristics associated with MIMO and cognitive radio (CR), the network performance is tightly coupled with mechanisms at the physical, link, ne…
Secure Beamforming For MIMO Broadcasting With Wireless Information And Power Transfer
Qingjiang Shi, Weiqiang Xu, Jinsong Wu +2
This paper considers a basic MIMO information-energy (I-E) broadcast system, where a multi-antenna transmitter transmits information and energy simultaneously to a multi-antenna in…