Energy Efficient Technologies for Cooperative MIMO Mobile Communication Systems Based on Interference Coordination

 
Visiting researcher: Prof. Xiaohu Ge (HUST)
Host researcher: Dr. Cheng-Xiang Wang (HWU)
Duration: 3 months
Status: Ongoing
 

Biography of the visiting researcher

Xiaohu Ge received his PhD degree in Communication and Information Engineering from Huazhong University of Science and Technology (HUST) in 2003. He has been an Associate Professor with the Department of Electronics and Information Engineering at HUST since 2005. He is also the Vice Director of The Institution of Communication and Detection at HUST. Prior to that, he worked as a Postdoctoral Researcher at Ajou University (Korea) and Politecnico Di Torino (Italy) from 2004 to 2005. His research interests are in the area of wireless mobile communications and networks, green communications, cooperative communications, traffic modeling in wireless networks, interference modeling/coordination, and MIMO techniques. He has published about 30 papers in refereed journals and conferences. He is currently the Principal Investigator for several research grants supported by National Science Foundation of China (NSFC), Ministry of Science and Technology (MOST), and National High-Tech 863 program.
 
 

Background and motivation

Multiple-input multiple-output (MIMO) technologies can effectively exploit the spatial domain of wireless channels to bring significant performance improvements and capacity increase to wireless communication systems. Conventional MIMO systems, known as point-to-point MIMO or co-located MIMO, deploy spatially separated multiple antennas at both the transmitter and receiver of a communication link. Cooperative MIMO, also known as virtual MIMO or distributed MIMO, allows a wireless network to coordinate among distributed antennas and achieve considerable performance gains similar to those provided by conventional MIMO systems. It promises significant improvements on the spectral efficiency and network coverage and is a major candidate technology in various standard proposals for the 4G wireless communication systems.
 
In an orthogonal frequency division multiplexing (OFDM) based 4G network with a frequency reuse factor of 1, the base stations in multiple cells transmit on all available time-frequency resource blocks simultaneously. The inter-cell co-channel interference is one of the main factors that limit the 4G system performance and proper interference coordination techniques have to be deployed. It is very important and timely to investigate how to model the interference (especially for cell-edge users) in cooperative MIMO systems, the impact of various interference coordination techniques on the transmission energy efficiency of base stations, and develop energy-efficiency techniques. The ultimate aim of this project is investigate and develop various energy efficient techniques for cooperative MIMO systems with multiple cells based on the interference coordination. The developed energy efficient algorithms have the potential to be tested, refined, and utilised in the to-be-developed beyond the fourth generation (B4G) wireless testbed at HWU.
 
 

Research activities

The ultimate aim of this project is investigate and develop various energy efficient techniques for cooperative MIMO systems with multiple cells based on the interference coordination. The developed energy efficient algorithms have the potential to be tested, refined, and utilised in the to-be-developed beyond the fourth generation (B4G) wireless testbed at HWU.
 
The measurable objectives are as follows:
  1. Develop an interference model for cooperative MIMO systems with multiple cells based on the theory of alpha stable processes and analyse the system capacity;
  2. Investigate the impact of interference coordination techniques on the transmission energy efficiency of base stations in cooperative MIMO communication systems;
  3. Develop energy-efficient techniques for cooperative MIMO systems.
 

Outcomes

To be updated
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