Title:
RECEPTION DEVICE, RECEPTION SYNCHRONIZATION METHOD, CONTROL CIRCUIT, AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2023/095299
Kind Code:
A1
Abstract:
This reception device includes: a correlation value calculation unit (241) that uses a matched filter to calculate a total correlation, which is a cross-correlation between a chirp sequence of a sequence length and a reception signal, a sequence latter-half correlation, which is a cross-correlation between the latter half of the chirp sequence and the reception signal, and a sequence first-half correlation, which is a cross-correlation between the first half of the chirp sequence and the reception signal; a power value calculation unit (242) that calculates the total power value corresponding to the total correlation; a threshold value determination unit (245) that estimates a spread code timing on the basis of the total power value for a one block cycle of a spread code; a power value calculation unit (251A) that calculates a latter-half power value corresponding to the sequence latter-half correlation; a power value calculation unit (251B) that calculates a first-half power value corresponding to the sequence first-half correlation; and an estimation unit (254) that estimates a frequency offset amount on the basis of the spread code timing, the total power value for a one block cycle, the latter-half power value for a one block cycle, and the first-half power value for a one block cycle.
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Inventors:
NAKAMURA RYOSUKE (JP)
Application Number:
PCT/JP2021/043442
Publication Date:
June 01, 2023
Filing Date:
November 26, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H04B1/7087; H04B1/7075
Domestic Patent References:
| WO2021117118A1 | 2021-06-17 | |||
| WO2018225190A1 | 2018-12-13 |
Foreign References:
| JP2012156926A | 2012-08-16 | |||
| JP2001102960A | 2001-04-13 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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