| 摘要 |
PROBLEM TO BE SOLVED: To reduce frequency in payload extraction based on erroneous length information in the case that a large error beyond the error correction and detection ability of an error correction and detection code exists in length information of a header. SOLUTION: A decoding part 112 decodes payload length information from a reception signal, and a minimum payload length calculation part 113 calculates a predictive minimum payload length, and a maximum payload length calculation part 114 calculates a predictive maximum payload length, and an error decision part 115 decided that payload length information has no errors if decodes payload length information is longer than the predictive minimum payload length and is shorter than the predictive maximum payload length, a frame discrimination part 109 discriminates one frame from the reception signal and extracts a payload from the frame if it is decided that payload length information has no errors. |
