石橋功至研究室の大比良和哉さん（情報・通信工学専攻博士後期1年）が、2018年度電子情報通信学会 無線通信システム（RCS）研究会活動奨励賞（2018 IEICE RCS Active Research Award）を受賞しました。この賞は2018年5月から2019年4月までのRCS研究会において、35歳以下の若手研究者が発表した論文のうち、特に優れた論文に対して与えられる賞です。 （詳細）

【論文題目】 離散値ベクトル再構成のための高速反復縮退アルゴリズムを用いた圧縮サブキャリアIQインデックス変調

参考：電子情報通信学会 無線通信システム（RCS）

先端ワイヤレス・コミュニケーション研究センター(AWCC)は，IEEE Vehicular Technology Society (VTS) Distinguished Lecturerであるアメリカアーカンサス大学のDr. Jingxian Wuをお招きして，Distinguished Lecture (DL) Programを実現する運びとなりました．

IEEE VTSは，現在の携帯電話の前身である自動車電話の黎明期から，移動体無線通信や自動車・鉄道制御システムに関する研究者の活動を支えている世界的な研究者団体です．IEEE VTS DLプログラムは各研究分野で顕著な功績をあげている研究者の世界各地での講演を支援する目的で設置されたシステムです．

Dr. Wuは無線信号処理や分散アンテナシステムに代表される無線通信の研究分野において，世界的に活躍されている著名な研究者のお一人であります．

学生の皆さんにとっては，第一線でご活躍されている研究者からお話を聞くことのできる貴重な機会であるので，奮ってご参加くださいますようお願い申し上げます．

日時：2019年5月28日（火）10:40~12:00
場所：電気通信大学 （東京都調布市調布ヶ丘1-5-1）東3号館3階301室
参加費無料，予約不要

講師：
Dr. Jingxian Wu, Associate Professor, Department of Electrical Engineering, University of Arkansas, USA

講演タイトル：
Optimum designs of Wireless Networks with Massively Distributed Antennas and Non-ideal Optical Front-hauls
※講演は英語で行われ通訳はつきません

講演概要：
Employing massively distributed antennas brings radio access points (RAPs) closer to users, thus enables aggressive spectrum reuse that can bridge the gap between the scarce spectrum resource and extremely high connection densities in future wireless systems. Examples include cloud radio access network (C-RAN), ultra-dense network (UDN), and cell-free massive MIMO system. These systems are usually designed in the form of fiber-wireless communications (FWC), where the distributed antennas or RAPs are connected to a central unit (CU) through optical front-hauls. The large number of densely deployed antennas or RAPs requires an extensive infrastructure of optical front-hauls. Consequently, the cost, complexity, and power consumption of the network of optical front-hauls may dominate the performance of the entire system. This talk provides an overview and outlook on the architecture, modeling, design and performance of FWC systems with massively distributed antennas. The complex interactions between optical front-hauls and wireless access links require optimum designs across the optical and wireless domains by jointly exploiting their unique characteristics. It is demonstrated that FWC systems with analog radio-frequency-over-fiber (RFoF) links outperforms its baseband-over-fiber (BBoF) or intermediate-frequency-over-fiber (IFoF) counterparts for systems with shorter fiber length, lower transmission power, and more RAPs, which are all desired properties for future wireless communication systems.

講師略歴：
Jingxian Wu received the B.S. degree in Electrical Engineering from Beijing University of Aeronautics and Astronautics, Beijing, China, in 1998, the M.S. degree in Electrical Engineering from Tsinghua University, Beijing, China, in 2001, and the Ph.D. degree in Electrical Engineering from the University of Missouri, Columbia, in 2005. He is currently an Associate Professor with the Department of Electrical Engineering, University of Arkansas. His research interests mainly focus on statistical signal processing, large scale data analytics, and wireless communications. He served as a symposium or track co-chairs for various international conferences, such as the 2009, 2015, and 2017 IEEE Global Telecommunications Conference, the 2012 and 2019 IEEE International Conference on Communication, the 2017, 2018 IEEE/CIC International Conference on Communications in China, and the 2017 Wireless Communication and Signal Processing Conference, etc. He is appointed as a distinguished lecture by the IEEE Vehicular Technology Society for 2018 and 2019. He is elected as the Vice Chair for the IEEE Communication Society (ComSoc) Signal Processing and Communication Electronics (SPCE) Technical committee in 2018. He is an Associate Editor of the IEEE ACCESS, and served as an Editor of the IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS from 2011 to 2016, and an Associate Editor of the IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY from 2007 to 2011.

問い合わせ先：先端ワイヤレス・コミュニケーション研究センター(AWCC)　安達宏一(adachi@awcc.uec.ac.jp)

先端ワイヤレス・コミュニケーション研究センター(AWCC)は，サウジアラビア・King Abdullah University of Science and Technology (KAUST)大学のDr. Mohamed-Slim Alouiniをお招きして，AWCCセミナーを実現する運びとなりました．

Dr. Alouiniは無線信号処理や無線伝送特性解析などの研究分野において，世界的に活躍されている著名な研究者のお一人であります．

学生の皆さんにとっては，第一線でご活躍されている研究者からお話を聞くことのできる貴重な機会であるので，奮ってご参加くださいますようお願い申し上げます．

日時：2019年5月17日（金）14:00~15:00
場所：電気通信大学 （東京都調布市調布ヶ丘1-5-1）東3号館3階301室
参加費無料，予約不要

講師：
Mohamed-Slim Alouini, Professor, Computer, Electrical, and Mathematical Science and Engineering (CEMSE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Makkah Province, Saudi Arabia.

講演タイトル：
Collimated light propagation: The next frontier in underwater wireless communication
※講演は英語で行われ通訳はつきません

講演概要：
Traditional underwater communication systems rely on acoustic modems due their reliability and long range. However their limited data rates, lead to the exploration of alternative techniques. In this talk, we briefly go over the potential offered by underwater wireless optical communication systems. We then summarizes some of the underwater channel challenges going from severe absorption and scattering  that need to be surpassed before such kind of systems can be deployed in practice. We finally present some of the on-going research directions in the area of underwater wireless optical communication systems in order to (i) better characterize and model the underwater optical channel and (ii) design, develop, and test experimentally new suitable modulation and coding techniques suitable for this environment.

講師略歴：
Mohamed-Slim Alouini was born in Tunis, Tunisia. He received the Ph.D. degree in Electrical Engineering from the California Institute of Technology (Caltech), Pasadena, CA, USA, in 1998. He served as a faculty member in the University of Minnesota, Minneapolis, MN, USA, then in the Texas A&M University at Qatar, Education City, Doha, Qatar before joining King Abdullah University of Science and Technology (KAUST), Thuwal, Makkah Province, Saudi Arabia as a Professor of Electrical Engineering in 2009.

問い合わせ先：先端ワイヤレス・コミュニケーション研究センター(AWCC)　安達宏一(adachi@awcc.uec.ac.jp)