Testbed Development for IMT - Advanced Radio Experiments
نویسندگان
چکیده
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の高度化と その後継システムを IMT-Advanced とすることが合 意された.2005年前後に標準化が開始されたEvolvedUTRA (LTE) [2]や UMB [3]は,IMT-2000の高度 化に位置づけられる.IMT-Advanced は,高速移動 環境下で 100Mbit/s 以上,低速移動環境下で最大 1Gbit/s程度が目標とされ,無線関連の研究報告がな されてきた [4], [5]など. 限られた周波数帯域でギガビットオーダの移動通信 を実現するには,マルチパス伝搬に強く帯域あたりの
منابع مشابه
Development of a MIMO/OFDM-Based Gbps Wireless Testbed for IMT-Advanced Technologies
According to International Telecommunication Union (ITU) requirements, future IMT-Advanced systems should support peak data rates of 100 Mbps and 1 Gbps, respectively, in high-speed mobile environment and stationary/pedestrian environment. In order to achieve this goal and evaluate related wireless technologies, we develop a MIMO/OFDM-based TDD-mode Gbps wireless testbed. This article describes...
متن کاملDemo Abstract: ASSERT - An Advanced Wireless Environment Research Testbed
Software simulation has often been used to evaluate proposed protocols for wireless devices. Simulation allows for rapid development and testing, but does not provide a realistic RF environment. To compensate for this, field experiments are performed. However, problems encountered during field experiments can be difficult to locate and correcting problems on-site can be time-consuming. Emulatio...
متن کاملSpectrum Sharing in Heterogeneous Wireless Networks: An FP7 CREW Use Case
Cognitive radio (CR) techniques and cognitive networks [1] aim at optimizing the use of the wireless spectrum, by observing the wireless environment and intelligently configuring radio settings and network parameters. The aim of the FP7 CREW project [2] is to establish an open federated test platform in order to facilitate experimental research on advanced spectrum sensing, CR and cognitive net...
متن کاملA Stream-Based Configurable Computing Radio Testbed
Software radios have emerged as important tools in the development of new signal processing algorithms, networking protocols, and propagation experiments in wireless environments. With a software radio, the signal processing and modem management can be changed in a timely matter. This enables users to explore a variety of domains before committing a design to silicon. Contemporary DSP-based sof...
متن کاملEfficient Spectrum Sensing/monitoring Methods and Testbed Development for Cognitive Radio Based Wsn
In this work, we propose an efficient spectrum sensing technique based on Doubly Cognitive Architecture (DCA) and an efficient spectrum monitoring technique based on partial spectrum sensing. In addition to this, we have developed a one of its kind testbed for Cognitive Radio-based wireless sensor network (CRWSN), where the proposed techniques are successfully implemented and tested. The testbe...
متن کامل