Title:
COMMUNICATION DEVICE
Document Type and Number:
Japanese Patent JP2021177585
Kind Code:
A
Abstract:
To provide a communication device that reduces the amount of calculation of a transmission weight matrix in singular value decomposition particularly in a radio communication device.SOLUTION: A communication instrument has: a singular value calculation module that, upon input of a channel matrix, outputs a transformation matrix or a singular value; an adaptive control parameter determination module that determines and outputs parameters including power distribution and modulation multilevel number and an unused stream; and a singular vector calculation module that, with a matrix component corresponding to the output unused stream set to 0, calculates a singular vector and outputs a transmission weight. The singular vector calculation module calculates the transmission weight by inverse transformation or an inverse iteration method.SELECTED DRAWING: Figure 1
Inventors:
TAKEI YURI
Application Number:
JP2020081816A
Publication Date:
November 11, 2021
Filing Date:
May 07, 2020
Export Citation:
Assignee:
IKEGAMI TSUSHINKI KK
International Classes:
H04B7/0456
Attorney, Agent or Firm:
Kenichi Fujii
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