Paper Abstract and Keywords |
Presentation |
2016-04-22 14:10
Multiuser Parallel Transmission by Sub Array Time Domain Beamforming on Massive MIMO using Higher Frequency Bands Kazuki Maruta, Atsushi Ohta, Takuto Arai, Yushi Shirato, Satoshi Kurosaki, Tatsuhiko Iwakuni, Masataka Iizuka (NTT) RCS2016-20 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Drastic improvements of transmission rate and system capacity are required towards 5th generation mobile communications (5G). As promising approaches, one is utilizing higher frequency band which remains rich spectrum resources and another is application of massive MIMO to compensate area coverage shortfall due to the large propagation loss while obtaining high order spatial multiplexing gain. With Line of Sight (LOS) dominant channel environment, multiuser (MU-) MIMO is also effective in further enhancing system capacity. Focusing on high beamforming gain provided by massive antenna array, this paper investigates feasibility of multiuser parallel transmission by sub-arrayed base station and beamforming. Each sub-array conducts the first eigenmode transmission and thus one stream is allocated per user without null-forming. This paper also employs previously proposed 1-tap time domain beamforming (TDBF) which simplifies calculation complexity of precoding. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Massive MIMO / Sub Array / 1st Eigenmode Transmission / Time Domain Beamforming / Parallel Transmission / / / |
Reference Info. |
IEICE Tech. Rep., vol. 116, no. 11, RCS2016-20, pp. 111-116, April 2016. |
Paper # |
RCS2016-20 |
Date of Issue |
2016-04-14 (RCS) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
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RCS2016-20 |
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