We welcome a new visiting student,Ivan Roberto Rojas from Gonzalez,Instituto Politecnico Nacional in Mexico to our laboratory.
国立工科大学（メキシコ）よりイウァン・ゴンザレス君が本研究室に1ヶ月滞在します。
Category Archives: News
Presentation at SITA 2015
Hiroki Kawabata and Shun Ogata, who are 2nd grade master students, gave presentations at The 38th Symposium on Information Theory and its Applications (SITA2015) at Okayama, Japan on Nov. 25th, 2015. Titles are as follows:
H. Kawabata, K. Ishibashi, S. Vuppala, and G. Abreu, “Design and Analysis of Energy Harvesting Relay Selection Using Channel Distribution Information.”
S. Ogata, K. Ishibashi, and G. Abreu, “Analysis of Packet Decoding Probability for Frameless ALOHA with Multiple Base Stations.”
11月25日，修士2年の川畑大樹君，尾形駿君が第38回情報理論とその応用シンポジウム（SITA2015）において発表を行いました．タイトルは下記の通りです．
川畑大樹，石橋功至，ヴッパラ サティアナラヤナ，アブレウ ジュゼッペ，”チャネル分布情報を用いたエナジーハーベスティング中継端末選択手法の 設計と解析”
尾形駿，石橋功至，アブレウ ジュゼッペ，”複数ベースステーション存在下におけるフレームレス ALOHA の パケット復号確率解析法に関する一検討”
Prof. Shin visited our laboratory
Prof. Won-Yong Shin from Dankook University visited our laboratory who is an ex-colleague of Prof. Ishibashi at Harvard university. He gave us an exciting and impressive talk and shared his recent results with us. The title and abstract of his talk were as follows:
Title : Huge Challenges on Twitter Analytics Using Geolocation
Abstract : Research in the field of online social networks (OSN) has grown dramatically with the evolution of technologies while harvesting Big Data. Twitter is one of the most popular micro-blogs (or social media). In this talk, I’m going to briefly explain how to perform data collection and processing from the Twitter network via Twitter Streaming API. Next, I’m going to show two recent results analyzed based on geo-tagged tweets. First, I characterize a newly discovered friendship degree according to geographic distance by introducing a new definition of “bidirectional friendship”. The study demonstrates the fact that the number of friends according to distance follows a double power-law (i.e., double Pareto law) distribution. Second, I introduce a low-complexity algorithm that detects a “point-of-interest (POI)” boundary. Detected boundaries are shown along with a variety of POI types, and it is verified that the runtime complexity scales linearly with the input size.
Presentation at Asilomar Conf. on Signals, Systems and Computers
Shun Ogata, our member, gave a presentation entitled “Frameless ALOHA with Multiple Base Stations” at 49th Asilomar conference on signals, systems and computers held at Asilomar Conference Grounds, CA, the United States on Nov. 9th.
11月9日，米国Asilomar Conference Groundsで開催された49th Asilomar conference on signals, systems and computerにおいて，M2尾形駿君が”Frameless ALOHA with Multiple Base Stations”と題して発表を行いました．
AWCC芋煮会/AWCC IMONI Party
東北出身の学生達の企画によるAWCC芋煮会が開催されました。
We had a IMONI party arranged by students from the Tohoku region of Japan. IMONI is a thick potato and meat soup eaten traditionally in the autumn in the Tohoku region of Japan.
Two Papers ranked in IEEE Popular Articles
Our two papers about RF energy harvesting and spatial modulation, respectively, are ranked in the latest IEEE Wireless Communication Letters Popular Articles (September 2015).
IEEE Wireless Communication LettersのPopular Articles (September 2015)に，RFエナジーハーベスティングおよび空間変調に関する論文2本が，それぞれランクインしました（28位，33位）．空間変調の論文は18ヶ月連続のランクインとなります．
http://ieeexplore.ieee.org/xpl/topAccessedArticles.jsp?punumber=5962382
New paper accepted for IEEE Commun. Lett.
Our paper “A Simple Random Access Scheme with Multilevel Power Allocation” has been accepted for publication in the IEEE Communications Letters.
AWCC Summer Camp
9月17日から19日の3日間、山尾研究室・藤井研究室と合同で菅平セミナーハウスにてAWCC合同合宿を行いました。
New paper accepted for IEEE Wireless Commun. Lett.
Our paper “Diversity-Multiplexing Tradeoff of Dynamic Harvest-and-Foward Cooperation” has been accepted for publication in the IEEE Wireless Commun. Lett, which was co-authored with Prof. I. Krikidis and Dr. C. K. Ho.
Our paper has been accepted to Asilomar’15
Our paper entitled “Frameless ALOHA with Multiple Base Stations” has been accepted to Asilomar’15 will be held at Asilomar Conference Grounds, CA.
The program is available at the following website: