講演抄録/キーワード |
講演名 |
2013-10-31 14:30
周辺環境を考慮した人体近傍伝搬チャネルの周波数帯域幅依存性 ○広瀬 幸・小林岳彦(東京電機大) WBS2013-24 |
抄録 |
(和) |
Wireless body area networksを実現するためには,デバイスの設計や評価において人体近傍UWBマルチパスチャネルの解析が必要である.筆者等はこれまで閉空間における人体装着型アンテナ間のUWB周波数帯域の電波伝搬を実測,モデル化を行ってきた.しかしながら,日本においてUWBデバイスの使用は制限されUWB技術の特徴を活かすことができないのが現状である.WBANに関連する研究において狭帯域とUWB(代表的には1 GHz以上)の電波伝搬特性は十分に研究されているが,残る10 MHz - 1 GHzが空白領域であるため,本研究では提案モデルをさらに発展させるため,この周波数領域の伝搬特性を解明する.そこで本稿では3.1 - 10.6 GHz帯域における周波数帯域幅を変化させることで,広帯域信号の伝搬特性を評価したので報告する. |
(英) |
The authors have focused on wideband, including Ultra-wideband (UWB, 3.1 to 10.6 GHz), radio propagation in various environments. Many studies have been reported about indoor propagation for narrowband and wideband. However previous study has not been examined characteristics between 10-MHz and 1-GHz frequencies. In our previous study, UWB and narrowband propagation were measured in a UWB frequency band within closed/semi-closed spaces (e.g. the spacecraft, passenger-car, and a metal desk equipped with a metal partition). While narrowband propagation resulted in considerable spatial variations in propagation gain due to interferences caused by multipath environments, UWB yielded none. This implies that the UWB systems have an advantage over narrowband from a viewpoint of reducing fading margins. UWB technologies have been considered for use in wireless body area networks (WBAN) because of their possible low power consumption and anti-multipath capabilities. A series of propagation measurements campaign were carried out between on-body antennas in five different rooms. A new path loss and statistical models considering room volume had been proposed. In this paper, we evaluated propagation characteristics in heavy multipath environments, especially examined the channels at 10-MHz to 1-GHz frequencies. |
キーワード |
(和) |
WBAN / 電波伝搬 / UWB / 広帯域 / / / / |
(英) |
Wireless body area networks / radio propagation / ultra-wideband / wideband / / / / |
文献情報 |
信学技報, vol. 113, no. 275, WBS2013-24, pp. 19-24, 2013年10月. |
資料番号 |
WBS2013-24 |
発行日 |
2013-10-24 (WBS) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
WBS2013-24 |