Patent ID: 8699632
Filing Date: 2014-04-15
Classification: H04L

Abstract:
1. An OFDM reception device for receiving an OFDM symbol that includes a signal for a useful symbol duration generated based on transmission information and a signal for a guard interval duration generated based on the signal for the useful symbol duration, comprising: a first orthogonal transformation unit configured to perform an orthogonal transformation on the signal for the useful symbol duration; a second orthogonal transformation unit configured to perform an orthogonal transformation on the signal for the guard interval duration; and a decoding unit configured to decode the OFDM symbol in accordance with results of the orthogonal transformation by the first orthogonal transformation unit and results of the orthogonal transformation by the second orthogonal transformation unit, wherein the OFDM symbol is a P1 symbol in a DVB-T2 transmission scheme, the guard interval duration is composed of an earlier guard interval duration that is earlier than the useful symbol duration and a later guard interval duration that is after the useful symbol duration, and the second orthogonal transformation unit combines a signal for the earlier guard interval duration and a signal for the later guard interval duration, and performs the orthogonal transformation by orthogonally transforming a signal that is a combination of the signal for the earlier guard interval duration and the signal for the later guard interval duration.