Title:
TRANSMISSION METHOD, TRANSMISSION DEVICE, RECEPTION METHOD, AND RECEPTION DEVICE
Document Type and Number:
Japanese Patent JP2018160918
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a transmission method, a transmission device, a reception method, and a reception device that improve reception quality in an environment where direct waves are dominant in a transmission method of simultaneously transmitting a plurality of modulation signals from a plurality of antennas.SOLUTION: A modulation signal in which data symbols are arranged is transmitted by switching precoding matrices to pre-code symbols so that a precoding matrix used at a time of precoding each data symbol and a precoding matrix used at a time of precoding data symbol adjacent in a frequency axis direction and a time axis direction to the data symbol are all different for all data symbols used for data transmission of the modulation signal to be transmitted.SELECTED DRAWING: Figure 6
Inventors:
MURAKAMI YUTAKA
KIMURA TOMOHIRO
OUCHI MIKIHIRO
KIMURA TOMOHIRO
OUCHI MIKIHIRO
Application Number:
JP2018108520A
Publication Date:
October 11, 2018
Filing Date:
June 06, 2018
Export Citation:
Assignee:
SUN PATENT TRUST
International Classes:
H04B7/0456; H04B7/0413; H04B7/06; H04L1/06; H04L27/26
Domestic Patent References:
| JP2008104193A | 2008-05-01 |
Foreign References:
| WO2008156081A1 | 2008-12-24 |
Other References:
NTT DOCOMO: "Multi-Codebook Pre-coding Scheme for MIMO in E-UTRA Downlink[online]", 3GPP TSG-RAN WG1#48 R1-070856, JPN6019011758, 7 February 2007 (2007-02-07), ISSN: 0004009716
Attorney, Agent or Firm:
Patent business corporation Nakajima intellectual property integrated office