Postdoctoral Talk at UESTC China
I was invited for a talk at University of Electronic Science and Technology of China (UESTC) China. The title of my talk was Network Coding for Cooperative Communications. I have been working on relay and cooperative communication research since 2006 when I got enrolled for PhD at Institute of Telecommunications at Vienna University of Technology, Austria. This was my first presentation in front of Chinese students and I was very happy at the end to have such an interactive and lively audience. During the session, with such a lively and interactive energetic discussion, I also learnt many new things from the audience at the School. For my postdoc at UESTC I will remain thankful to Professor Qin Zhiguang and Professor Zhong Ting. They both are really such a nice personalities that with their presence one will never feel foreigner, even sometime they give you a feeling that you are also Chinese and this is not a first time that you are within such a friendly and warm welcoming nation.
The abstract of talk was as follows:
Abstract
Network Coding for Cooperative Communications
For reliable wireless transmission, cooperative communications has been proposed as an effective way to exploit the spatial diversity, in size constrained nodes. However, the cooperative transmission gains are achievable if one follows the information theoretic block-Markov coding used in the proof of the capacity regions of cooperative communications. In this talk, I will first discuss an efficient and low cost option for the operational implementation of block-Markov coding for cooperative communications. To characterize the performance, I derive outage probability and the resulting diversity-multiplexing tradeoff. The outage probability results show that block-Markov coding inspired, network coding based cooperative communications offers higher diversity gain than the space-time or the repetition coding based cooperative communications. Subsequently, a novel cooperative communication scheme based on the combination of space-time and networking coding will be presented. This will follow the discussion of effectiveness of network coding based cooperative communications for sensor in nodes in agriculture and finally, the talk will be concluded with the comparative study of network coding based cooperative communication and multiple access channel with a dedicated relay.
The following contents are taken from the link:
http://www.ss.uestc.edu.cn/index.php/chuguoshenzao/2014/10-24/658.html
Gordhan Das Menghwar
2014年10月22日中午12：40，学院研分会联合国际交流办公室邀请到Gordhan Das Menghwar博士在电子科大沙河校区信软楼416会议室举办了题为“针对协作通信的网络编码”的全英文学术讲座。国际办王娅老师、研究生辅导员钟林鹏老师、研分会成员以及学院本科生、研究生共计30余人参加了该次讲座。
Gordhan Das Menghwar博士硕士毕业于巴基斯坦信德通讯科技大学，在奥地利维也纳科技大学电信学院获得博士学位，是巴基斯坦信德农业大学信息技术中心全职研究员。现在在电子科技大学就读博士后，研究兴趣在无线通信的物理层方面。另外，对4gLTE、合作沟通、信息理论、网络编码和空时编码也有研究。
讲座分为两部分进行，第一部分主要介绍针对协作通信的网络编码知识，讲座过程中，Gordhan博士告诉同学们协作通信是一个崭新的研究领域，其思想在通信领域具有非常广阔的应用前景，该方法可以使具有单根天线的移动台获得类似于MIMO系统中的某些增益，其基本思想是在多用户环境中，具有单根天线的移动台可以按照一定的方式来共享彼此的天线从而产生一个虚拟MIMO系统，从而获得发分集增益。协作通信无论是在实际生活和学习中都具有非常广的应用。其中，Gordhan博士也对讲座过程中同学们提出的问题进行了回答，互动达到高潮。
第二部分Gordhan博士给我们介绍了自己的留学经历，为正在准备出国的同学提出了很中肯的准备建议，让大家受益颇深。
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