| Paper Abstract and Keywords |
| Presentation |
2018-07-26 13:40
Channel estimation using spatial interpolation in Massive MIMO
Masumi Kuriyama, Tomoaki Ohtsuki (Keio Univ.) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
Massive MIMO (multiple-input multiple-output) is a technology that uses many antennas at the base station, and can realize advanced beamforming and spatial multiplexing. However, since Massive MIMO has many antennas, there exist problems such as the increase of overhead including pilot signals used for channel estimation and feedback of CSI (channel state information). To reduce this overhead, there is a technique of transmitting pilot signals only from some antennas and interpolating channels of the remaining antennas based on spatial correlation between channels of transmit antennas. In addition, to perform interpolation with low computational complexity, there is a method of interpolating channels by dividing the planar antenna array into the vertical and horizontal linear directions. However, this method does not improve channel estimation accuracy more than a certain level. In this report, we propose a method of channel interpolation with dividing the entire planar antenna array into a set of smaller planar arrays. The results demonstrate that the proposed method reduces the computational complexity compared to the case where it is not divided, and that the channel interpolation accuracy improves compared with the conventional one in which the planar array is divided into the linear directions. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Massive MIMO / spatial correlation / channel interpolation / / / / / |
| Reference Info. |
ITE Tech. Rep., vol. 42, no. 23, BCT2018-60, pp. 1-4, July 2018. |
| Paper # |
BCT2018-60 |
| Date of Issue |
2018-07-19 (BCT) |
| ISSN |
Print edition: ISSN 1342-6893 Online edition: ISSN 2424-1970 |
| Download PDF |
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| Conference Information |
| Committee |
BCT IEEE-BT HOKKAIDO |
| Conference Date |
2018-07-26 - 2018-07-27 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Hokkaido Univ. |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
Broadcast Operating Technologies, Transmission & Reception Engineering, etc. |
| Paper Information |
| Registration To |
BCT |
| Conference Code |
2018-07-BCT-BT-HOKKAIDO |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Channel estimation using spatial interpolation in Massive MIMO |
| Sub Title (in English) |
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| Keyword(1) |
Massive MIMO |
| Keyword(2) |
spatial correlation |
| Keyword(3) |
channel interpolation |
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| 1st Author's Name |
Masumi Kuriyama |
| 1st Author's Affiliation |
Keio University (Keio Univ.) |
| 2nd Author's Name |
Tomoaki Ohtsuki |
| 2nd Author's Affiliation |
Keio University (Keio Univ.) |
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| Speaker |
Author-1 |
| Date Time |
2018-07-26 13:40:00 |
| Presentation Time |
25 minutes |
| Registration for |
BCT |
| Paper # |
BCT2018-60 |
| Volume (vol) |
vol.42 |
| Number (no) |
no.23 |
| Page |
pp.1-4 |
| #Pages |
4 |
| Date of Issue |
2018-07-19 (BCT) |
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