Invention Grant
- Patent Title: Radio apparatus, channel estimation method, non-transitory computer readable medium, and radio communication system
-
Application No.: US17043308Application Date: 2019-01-30
-
Publication No.: US10992499B2Publication Date: 2021-04-27
- Inventor: Jun Shikida , Kazushi Muraoka , Naoto Ishii
- Applicant: NEC CORPORATION
- Applicant Address: JP Tokyo
- Assignee: NEC CORPORATION
- Current Assignee: NEC CORPORATION
- Current Assignee Address: JP Tokyo
- Priority: JP2018-089777 20180508
- International Application: PCT/JP2019/003258 WO 20190130
- International Announcement: WO2019/215964 WO 20191114
- Main IPC: H04B7/06
- IPC: H04B7/06 ; H04L25/02 ; H04L27/26
Abstract:
A radio apparatus (10) includes an estimation unit (2) configured to calculate an estimated value of a channel response for each of a plurality of antennas, a padding unit (3) configured to generate a first antenna-space channel vector having dimensions larger than the number of the antennas by combining the estimated value with a padding value, a spatial transformation unit (4) configured to calculate a first beam-space channel vector by spatial transforming the first antenna-space channel vector, a noise suppression unit (5) configured to generate a second beam-space channel vector by suppressing at least one element of the first beam-space channel vector, an inverse spatial transformation unit (6) configured to calculate a second antenna-space channel vector by inversely and spatial transforming the second beam-space channel vector, and an extraction unit (7) configured to determine an estimated value of each channel based on the second antenna-space channel vector.
Public/Granted literature
Information query
