Receiving device, receiving method, control circuit, and storage medium
The receiving device enhances synchronization performance in spread spectrum communication by averaging phase differences across multiple correlation observation periods and channels, addressing synchronization challenges due to low signal power density and frequency offsets.
JP7884704B2Active Publication Date: 2026-07-03MITSUBISHI ELECTRIC CORP
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- MITSUBISHI ELECTRIC CORP
- Filing Date
- 2024-08-07
- Publication Date
- 2026-07-03
Smart Images
Figure 0007884704000010 
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Abstract
A reception device (3) comprises: a correlation coefficient calculation processing unit (41) that calculates, for each frequency hopping channel and for each correlation observation period shorter than a symbol period of a reception signal, a correlation coefficient between the reception signal and a known signal; an inter-observation period phase-difference calculation unit (42) that calculates, on the basis of the correlation coefficient, a first average phase difference that is the average of the phase differences of correlation coefficients between different correlation observation periods; an inter-channel phase-difference calculation unit (43) that calculates, on the basis of the correlation coefficient, a second average phase difference that is the average of the phase differences of correlation coefficients between different frequency hopping channels; and a determination unit (47) that determines a head timing of a spread code on the basis of the average power in the symbol duration of the first average phase difference and the average power in the symbol duration of the second average phase difference.
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