Search Results for author: Kosuke Yamazaki

Found 3 papers, 1 papers with code

Evaluation on Energy Efficiency of UE in UL Cell-Free Massive MIMO System With Power Control Methods

no code implementations4 Oct 2021 Masaaki Ito, Issei Kanno, Takeo Ohseki, Kosuke Yamazaki, Yoji Kishi, Thomas Choi, Andreas F. Molisch

Cell-free massive multiple-input multiple-output (CF mMIMO) systems are expected to provide faster and more robust connections to user equipments (UEs) by cooperation of a massive number of distributed access points, and to be one of the key technologies for beyond 5G (B5G).

Uplink Energy Efficiency of Cell-Free Massive MIMO With Transmit Power Control in Measured Propagation Channels

no code implementations4 Aug 2021 Thomas Choi, Masaaki Ito, Issei Kanno, Takeo Oseki, Kosuke Yamazaki, Andreas F. Molisch

Therefore, if the "target" spectral efficiency (SE) is met, it is important to optimize the uplink EE when setting the transmit powers of the UEs.

Using a Drone Sounder to Measure Channels for Cell-Free Massive MIMO Systems

2 code implementations23 May 2021 Thomas Choi, Jorge Gomez-Ponce, Colton Bullard, Issei Kanno, Masaaki Ito, Takeo Ohseki, Kosuke Yamazaki, Andreas F. Molisch

Measurements of the propagation channel form the basis of all realistic system performance evaluations, as foundation of statistical channel models or to verify ray tracing.

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