5G New Radio Key Performance Indicators Evaluation for IMT-2020 Radio Interface Technology

Multiple Access for 5G New Radio: Categorization, Evaluation, and Challenges

Next generation wireless networks require massive uplink connections as well as high spectral efficiency. It is well known that, theoretically, it is not possible to achieve the sum capacity of multi-user communications with orthogonal multiple access. To meet the challenging requirements of next generation networks, researchers have explored non-orthogonal and overloaded transmission technolog...

Simulation Tools for the Evaluation of Radio Interface Technologies for IMT-Advanced and Beyond 1. Introduction

ESA Satellite Wideband CDMA Radio Transmission Technology for the IMT-2000/UMTS Satellite Component: Features & Performance

The recent European Telecommunications Standards Institute (ETSI) decision to endorse for the Universal Telecommunication Radio Access ??? (UTRA) techniques based upon wideband-CDMA approaches for terrestrial UMTS (T-UMTS) paired frequency duplexing band will certainly constitute an important driver to orientate the corresponding choice for the satellite UMTS (S-UMTS) component. In this paper i...

Testbed Development for IMT - Advanced Radio Experiments

携帯電話に代表される移動通信は,アナログから ディジタルに変わった第 2世代を経て,音声サービス 以外の多様なサービスも可能とする第 3 世代を迎え ている.更に,携帯端末の処理能力やユーザインタ フェースの向上に伴ってアプリケーションの高速大容 量化が進展し,より性能の優れた次の移動通信システ ムが期待されている. 第 3世代の商用サービスが始まった 2000年代初頭, 来るべき新しいシステムを International Telecommunication Union Radiocommunications Sector (ITUR) では Systems Beyond IMT-2000(通称 Beyond 3G)と称し,その特徴はいわゆるVan diagram [1]に 集約され,多くの議論が進められてきた.2005 年の ITU-R WP8F会合において,IMT-2000の高...

Key Issues in Radio Interface Design

This project aims at investigating key issues in radio interface design for practical frequency-selective fading channels. It is focused on the new opportunities and challenges that arise when considering broadband radio systems, with an emphasis on packet data transmission. The purpose of such a radio interface is to carry packets to or from wireless users. The destination of packets may be on...