Title:
TRANSMITTER
Document Type and Number:
Japanese Patent JP2019169968
Kind Code:
A
Abstract:
To obtain a transmitter capable of inhibiting reduction in transmission efficiency and reduction in communication capacity.SOLUTION: A transmitter 1 comprises: a control unit that allocates layers to terminals and, for each layer, determines an arrangement position in a frequency region and a time region for a reference signal; processing units 12-1 to 12-N that on the basis of the determined arrangement position, arrange the reference signal; and a precoding unit 13 and a transmission unit 14 that spatially multiplex and transmit signals for one or more layers. A schedule unit is configured using a matrix having 12 subcarriers and 14 symbols. Reference signals arranged at second and third symbols in zeroth and first subcarriers and at second and third symbols in sixth and seventh subcarriers are taken as a first reference signal group; reference signals arranged at second and third symbols in second and third subcarriers and at second and third symbols in eighth and ninth subcarriers are taken as a second reference signal group.SELECTED DRAWING: Figure 2
Inventors:
HASEGAWA FUMIDAI
TAIRA AKINORI
UCHIDA SHIGERU
FUKUI NORIYUKI
OKAZAKI AKIHIRO
IURA YUKI
TAIRA AKINORI
UCHIDA SHIGERU
FUKUI NORIYUKI
OKAZAKI AKIHIRO
IURA YUKI
Application Number:
JP2019096661A
Publication Date:
October 03, 2019
Filing Date:
May 23, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H04B7/06; H04B7/0456; H04J13/18; H04L27/26; H04W72/04
Domestic Patent References:
| JP2016027747A | 2016-02-18 | |||
| JP2014138424A | 2014-07-28 | |||
| JP2016518758A | 2016-06-23 | |||
| JP2016134917A | 2016-07-25 | |||
| JP2015513257A | 2015-04-30 | |||
| JP2013511855A | 2013-04-04 | |||
| JP2013509042A | 2013-03-07 |
Foreign References:
| US9401824B1 | 2016-07-26 | |||
| US20140348109A1 | 2014-11-27 |
Attorney, Agent or Firm:
Jun Takamura