Patent ID: 8724446

Claim:
A wireless communication system which uses a plurality of guard intervals of differing lengths, wherein: the wireless communication system uses a frame comprising a plurality of sub-frames being units of a transmission, the sub-frames comprising a plurality of data symbols and guard intervals between the data symbols, each sub-frame being transmitted every frame period, and a different guard interval length being available for each sub-frame; and the wireless communication system includes a transmission device comprising: a guard interval insertion section configured to insert a guard interval of a fixed length between each of the data symbols in a specified sub-frame of the frame; a placement information determination section configured to determine placement information pertaining to a placement of a sub-frame to which guard intervals different in length from the guard interval of the fixed length are to be applied; and a multiplexing section configured to multiplex the placement information determined by the placement information determination section into a transmission signal in a sub-frame at a specific position in the frame.