アンダーサンプリングを用いたQAM信号評価法の提案

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2024/01/01

タイトル(英語): QAM Signal Measurement Method based on Under-sampling

著者名: 下田　大世（日本大学大学院理工学研究科電子工学専攻），大谷　昭仁（日本大学理工学部電子工学科）

著者名(英語): Masatsugu Shimoda (Graduate School of Science and Technology, Nihon University), Akihito Otani (College of Science and Technology, Nihon University)

キーワード: 無線通信，無線通信評価，ADC，アンダーサンプリング　　radio communication，radio communication evaluation，ADC，under-sampling

要約(英語): This paper describes a QAM signal evaluation method in a radio communication evaluation system based on under-sampling. Although frequency elements generated by quadrature demodulation can be calculated using QAM symbols on a constellation, this technique requires a symbol synchronous trigger. Our proposed method has a software triggering technique that can extract the symbols regardless of the frequency difference. Numerical simulation with 16QAM showed good synchronization between the trigger and the measured waveforms. In addition, the results of demonstration experiment using 16QAM with carrier frequency of 28 GHz showed the practicality of the proposed method by drawing an eye pattern and a constellation. In conclusion, we show the possibility of high-resolution and low-cost measurement in QAM signals with mmWave carrier frequency.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.144 No.1 （2024） 特集：2024年研究開発の動向と最前線

本誌掲載ページ: 23-28 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/144/1/144_23/_article/-char/ja/