2024-03-28T16:51:01Z
https://niigata-u.repo.nii.ac.jp/oai
oai:niigata-u.repo.nii.ac.jp:00001786
2022-12-15T03:34:34Z
423:424:425
453:454
16x16 MIMO testbed for MU-MIMO downlink transmission
16x16 MIMO testbed for MU-MIMO downlink transmission
Nishimori, Kentaro
5580
Kudo, Riichi
5581
Honma, Naoki
5582
Takatori, Yasushi
5583
Mizoguchi, Masato
5584
multiuser MIMO
adaptive modulation scheme
OFDM
eigenvalue
bit interleaver
Multi-user multiple input multiple output (MU-MIMO) systems have attracted much attention as a technology that enhances the total system capacity by generating a virtual MIMO channel between a base station and multiple terminal stations. Extensive evaluations are still needed because there are many more system parameters in MU-MIMO than in single user (SU)-MIMO and the MU-MIMO performance in actual environments is still not well understood. This paper describes the features and effectiveness of a 1616 MU-MIMO testbed in an actual indoor environment. Moreover, we propose a simple adaptive modulation scheme for MU-MIMO-OFDM transmission that employs a bit interleaver in the frequency and space domains. We evaluate the frequency efficiency by obtaining the bit error rate of this testbed in an actual indoor environment. We show that 1644-user MU-MIMO transmission using the proposed modulation scheme achieves the frequency utilization of 870 Mbps and 1 Gbps (respective SNRs: 31 and 36 dB) with a 20-MHz bandwidth.
journal article
The Institute of Electronics, Information and Communication Engineers
2010-02
application/pdf
IEICE transactions on communications
2
E93-B
345
352
IEICE transactions on communications
AA10826261
09168516
https://niigata-u.repo.nii.ac.jp/record/1786/files/E93-B_2_345-352.pdf
eng
info:doi/10.1587/transcom.E93.B.345
http://www.ieice.org/jpn/trans_online/
Copyright(C)2010 IEICE
本文データは学協会の許諾に基づきEJサイトから複製したものである