This paper describes our activities related to Massive Multi Input and Multi Output (MIMO) for use in a 5G radio access network (RAN). To achieve capacity enhancement and low power consumption, Massive MIMO has drawn attention as a key technology. Our research focuses on utilizing Massive MIMO in the low super-high-frequency (SHF) band, which is expected to be used for 5G commercial bands relatively soon, and on enhancing spectrum efficiency by spatial multiplexing with a low-SHF-band Massive MIMO antenna. The present work introduces a prototype low-SHF-band Centralized-RAN (C-RAN) Massive MIMO System including a low-SHF-band Massive MIMO Active Antenna System (AAS) that has 64 antenna elements, reports on outdoor and indoor downlink (DL) multi-user (MU) MIMO evaluations with the prototype system in both cases of 1 AAS unit and 2 AAS units, and presents the results of the evaluations. From the results, we confirmed that the prototype low-SHF-band C-RAN Massive MIMO system can optimize the performance with the minimum configuration of AAS units by changing the configuration appropriately depending on the environment.


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    Titel :

    Field Experimental DL MU-MIMO Evaluations of Low-SHF-Band C-RAN Massive MIMO System with over 100 Antenna Elements for 5G


    Beteiligte:
    Yamazaki, Kenichiro (Autor:in) / Izui, Kohei (Autor:in) / Nakayasu, Kanada (Autor:in) / Okuyama, Tatsuki (Autor:in) / Mashino, Jun (Autor:in) / Suyama, Satoshi (Autor:in) / Sato, Toshifumi (Autor:in) / Okumura, Yukihiko (Autor:in)


    Erscheinungsdatum :

    01.08.2018


    Format / Umfang :

    807740 byte





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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