INFONET 국외출장 보고서

1. 보고자 인적사항

성 명	성진택
소 속 / 과정 및 학번	정보통신공학부 / 박사과정 20102043
여행국가 및 방문기관	중국 상하이 (WCNC 2013)
여 행 기 간	2013.04.06. ~ 2013.04.12.
여 행 목 적	논문 발표 및 학회 참석

2. 업 무 수 행 내 용

회의명	기간	장소
Tutorial	2013.04.07.	상하이 국제컨벤션센터
학회 참석	2013.04.08.~10.	상하이 국제컨벤션센터

1) Oral presentation: "Exact Outage Probability and Power Allocation of Two Nodes in Cooperative Networks"

2) Tutorial: "Network Processing with Bayesian Graphical Models" by Henk Wymeersch

3. 업무수행으로 습득한 연구관련 내용(자료가 있으실 경우 첨부하여주시기 바랍니다.)

I got some information from the tutorial, "Network Processing with Bayesian Graphical Models" by Henk Wymeersch. He prsented that bayesian graphical models, such as factor graphs, are gaining increasing importance in the systematic development of algorithms in communication receivers and communication networks. Recent developments have revealed ties between graphical models, statistical physics, variational methods, and convex optimization (note that this topic is selected and published on IEEE Signal Processing Magazine in May 2013). Most of these developments originate from the machine learning and statistics communities, and there is an urgent need for communications researchers to become aware of these developments and apply state-of-the-art inference methods to important problems in our own field. This tutorial strives to address this need. It provides an overview of the theory behind graphical models and explores deeper connections between different algorithms. The theory will first be applied to a centralized problem (data detection in a wireless receiver), and a then to a number of distributed problems (tracking, network synchronization, beamforming).

4. 업무수행에서 얻은 내용이 본인의 앞으로 연구방향에 끼친 영향

In the business panel, some scientists (organized by Prof. L. Hanzo, Prof. F. Adachi, Dr. Chih-Lin I, Prof. Victor O.K. Li, Dr. W. Tong, and Prof. P. R. Kumar) discussed specific topic, "Wireless Futures". In short, given the current level of growth of demand, the data-traffic carried by the mobile network in 2020 might be 1000 times higher than that in 2010. As a further challenge, the bandwidth-efficiency can only be improved at the cost of reduced power-efficiency and vice versa. Among argument, Prof. Victor O.K. Li (The University of Hong Kong) said that some compression techniques can alternate heavy data-traffic problems. In other words, the research area such as compressed sensing is expected to solve those problems. This point gave me impressive inspiration. I believe that compressed sensing I currently have studied helps us an efficient way of transmission technique.

5. 업무수행으로 보고, 느꼈던 부분

Throughout this conference, I felt movement of research direction that the next communications coms from heterogeneous networks such as different protocols of devices-to-devices communications, deviating traditional point-to-point communications technique. Another thing is that conversion technology with different fields of research areas is considered in the next communications.

2013. 05. 11.

보고자  성 진 택