Title:
プリコーディング方法、プリコーディング装置、送信方法、送信装置、受信方法および受信装置
Document Type and Number:
Japanese Patent JP7029648
Kind Code:
B2
Abstract:
To provide a precoding method, a precoding device, a transmission method, a transmission device, a reception method, and a reception device, which improve reception quality in an environment where direct waves dominate, in a transmission method simultaneously transmitting a plurality of modulated signals from a plurality of antennas.SOLUTION: A transmission method for simultaneously transmitting a first modulated signal and a second modulated signal at the same frequency includes multiplying a baseband signal 307A after first mapping and a baseband signal 307B after second mapping by precoding weight. It is made into a precoding method in which a precoding weight multiplication unit 600 for outputting a first modulated signal and a second modulated signal regularly changes precoding weight, and thereby reception quality improves at a reception device.SELECTED DRAWING: Figure 6
Inventors:
Yutaka Murakami
Tomohiro Kimura
Mikihiro Ouchi
Tomohiro Kimura
Mikihiro Ouchi
Application Number:
JP2019119236A
Publication Date:
March 04, 2022
Filing Date:
June 27, 2019
Export Citation:
Assignee:
Sun Patent Trust
International Classes:
H04B7/0413; H04B7/0456; H04B7/06; H04L27/26
Domestic Patent References:
| JP2008536370A | ||||
| JP2010539841A |
Other References:
Hangjun Chen(他2名),Turbo space-time codes with time varying linear transformations,IEEE Transactions on Wireless Communications,2007年,VOL.6, NO.2,pp.486-493
Attorney, Agent or Firm:
Patent Business Corporation Nakajima Intellectual Property Integration Office