| 摘要 |
A preamble detection apparatus includes: a correlation maximum value detection threshold generation unit that determines a correlation maximum value detection threshold on the basis of a correlation peak value; a correlation maximum value detection determination unit that detects one of correlation results, which exceeds the correlation maximum value detection threshold, as a correlation maximum value; a correlation peak detection unit that updates the correlation peak value to the detected correlation maximum value when the correlation maximum value is detected; and a control unit that sets a period, where a correlation peak caused by an LO spurious component may occur, to a first period, sets a period, centering on a position where a distance from a correlation peak position is an integer multiple of a frequency hopping cycle, to a second period, and monitors presence or absence of a correlation result that exceeds the correlation maximum value detection threshold in the first and second periods, while not applying an erroneous detection threshold to the first period.
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