Patent Document ID: 8737541
Application ID: 13501189
Patent Flag: 1

Claim One:
1. A decoding apparatus comprising: a computing unit that computes a plurality of Euclidean distances only for a number of code word candidates of code words, which are control format indicators (CFIs), from demodulated data, the number being smaller than a number of values the code words can express, the code words having a possibility of being transmitted; and a decoding unit that decodes the CFIS from the plurality of Euclidean distances, wherein the computing unit comprises: an accumulation unit for accumulating a first sum, a second sum, and a third sum from the demodulated data; and a subtraction unit for performing subtraction processing on the first sum, the second sum, and the third sum to determine a first Euclidean distance, a second Euclidean distance, and a third Euclidean distance.