Decoding device, decoding method and radio communication device

TL;DR: In this article, the authors propose a decoding device that includes an error correction decoding unit for decoding of a soft decision value of input reception data by iterative decoding processing; a data error detection unit 403 for detecting the presence of a data data error in the output of the error-correcting decoding unit; and a control unit 404 for determining the number of valid bits of data of an error decoding target.

Abstract: PROBLEM TO BE SOLVED: To perform decoding at high speed by reducing the decoding processing amount of reception data, according to the communication quality of a transmission path.SOLUTION: A decoding device includes: an error correction decoding unit 402 for performing error correction decoding of a soft decision value of input reception data by iterative decoding processing; a data error detection unit 403 for detecting the presence of a data error in the output of the error correction decoding unit; and a control unit 404 for determining the number of valid bits of data of an error correction decoding target, on the basis of the number of repetition times of the iterative decoding processing when the error correction decoding is performed on the header of the reception data, and the detection result of the data error detection unit. When the number of repetition times is small, the decoding device restricts the number of valid bits by fixing the lower bit of a reception data RD2 to 0, because of good transmission path quality.