Academic report by Dr. Kushal Anand, Nanyang Technological University, Singapore

Source:SIST  Author:Yan Jiang  Date:2018-06-11  Click:341

 

       Innovative Source Lecture Hall, Southwest Jiaotong University

 

       Lecture Series: Frontiers in Wireless Communications & Information Coding

 

 (Title):  IEEE Region 10 and MEMS Technology

 (Speaker): Dr Kushal Anand, Nanyang Technological University (NTU), Singapore

 (Time)13 June 20182:30-3:30pm (Wednesday

(Venue)Room X9521#, Xipu Campus, SWJTU

 (Chair):  Pingzhi Fan

 

Outline of the Talk:

         Beamformer Designs for the MIMO Interference Channels with Limited Channel Feedback

 

       Highly accurate channel state information (CSI) is required to obtain the full throughput advantage of multi-antenna multi-user systems. Inaccurate CSI at the users can lead to severe performance degradation, and therefore suitable transmission techniques are required to improve the network throughput in the presence of inaccurate CSI. In this talk, beamforming techniques are considered for the multiple-input-multiple-output interference channel with imperfect channel feedback at the transmitters. An analytical expression for the upper bound on the total rate loss due to limited channel feedback is derived. The rate loss is a function of the total feedback budget available to the receiver, the strength of the desired and the interfering links at the users and the network parameters. This rate loss upper bound metric is then minimized at each receiver locally by allocating the feedback bits optimally among the links observed by it. It is found that with limited channel feedback budget at the users, interference alignment may not be the appropriate beamforming strategy. Based on the feedback bit allocation policy to minimize the rate loss upper bound at the receiver and the corresponding channel quantization error statistics at the transmitter, an improved beamformer design is proposed which can significantly enhance the network throughput.

 

      (Short Biography of the Speaker):

          Dr Kushal Anand , NTU, Singpore ( email: KUSH0005@e.ntu.edu.sg)

          Kushal Anand received his Bachelor of Technology in Electronic Engineering from the Indian Institute of Technology (Indian School of Mines), Dhanbad, India,      Master of Engineering (M.Eng.) and PhD from the School of Electrical and Electronic Engineering (EEE), Nanyang Technological University (NTU), Singapore. Currently, he is a post-doctoral research staff with the School of EEE, NTU and a visiting researcher to the Institute of Mobile Communications, Southwest Jiaotong University. His research interests include transmission techniques for high mobility wireless channels, interference management in wireless networks with inaccurate channel information, multi-user wireless communications, signal processing and optimization for communication systems.