SYNCHRONOUS PROCESSING APPARATUS, RECEIVING APPARATUS AND SYNCHRONOUS PROCESSING METHOD
A receiving apparatus 100 in accordance with an exemplary aspect of the present invention is including a receiving unit 1 that receives an analog signal, a sample signal generation unit 2 that converts an analog signal received by the receiving unit 1 into a digital signal, and generates a sample signal by performing oversampling, a correlation unit 51 that obtains correlation between the sample signal and a known signal pattern, a symbol section estimation unit 53 that estimates timing of a symbol section based on the correlation value, and a sampling position determination unit 54 that determines a sampling position based on timing of a symbol section estimated by the symbol section estimation unit 53.
1 . A synchronous processing apparatus comprising:
a correlation unit that obtains correlation between a sample signal and a known signal pattern and acquires a correlation value in succession, the sample signal being generated by oversampling a received analog signal;
a symbol section estimation unit that estimates timing of a symbol section based on the correlation value; and
a sampling position determination unit that determines a sampling position based on timing of a symbol section estimated by the symbol section estimation unit.
2 . The synchronous processing apparatus according to claim 1 , wherein the symbol section estimation unit detects a sample signal corresponding to a correlation value indicating maximum or minimum among a plurality of correlation values each obtained by the correlation unit for each of the sample signals, and estimate a symbol section based on the detected sample signal.
3 . The synchronous processing apparatus according to claim 1 , the sampling position determination unit determines center timing of timing of the symbol section estimated by the symbol section estimation unit as a sampling position.
4 . The synchronous processing apparatus according to claims 1 , wherein
the sample signal includes a predetermined signal pattern, and
the correlation unit obtains a correlation value between the sample signal and the signal pattern.
5 . The synchronous processing apparatus according to claims 1 , wherein
the sample signal includes a preamble data at a front-end portion of the signal, and
the correlation unit obtains a correlation value between the sample signal and the preamble signal.
6 . A receiving apparatus comprising:
a receiving unit that receives an analog signal;
a sample signal generation unit that converts an analog signal received by the receiving unit into a digital signal, and generates a sample signal by performing oversampling;
a correlation unit that obtains correlation between the sample signal and a known signal pattern and acquires a correlation value in succession;
a symbol section estimation unit that estimates timing of a symbol section based on the correlation value; and
a sampling position determination unit that determines a sampling position based on timing of a symbol section estimated by the symbol section estimation unit.
7 . A synchronous processing method comprising:
obtaining correlation between a sample signal and a known signal pattern and acquiring a correlation value in succession, the sample signal being generated by oversampling a received analog signal;
estimating timing of a symbol section based on the correlation value; and
determining a sampling position based on timing of the estimated symbol section.
8 . The synchronous processing method according to claim 7 , further comprising:
detecting a sample signal corresponding to a correlation value indicating maximum or minimum among a plurality of the correlation values each obtained for each of the sample signals, and
estimating a symbol section based on the detected sample signal.
9 . The synchronous processing method according to claim 7 , further comprising performing sampling at center timing of timing of the estimated symbol section.