DEVICE FOR DETECTING COLLISION POSITION OF OFDM SIGNAL, OFDM RECEIVER, METHOD FOR DETECTING COLLISION POSITION OF OFDM SIGNAL, AND OFDM RECEPTION METHOD

摘要

PPROBLEM TO BE SOLVED: To accurately detect a data symbol position colliding between a plurality of cells and to improve error rate characteristics of decoding data. PSOLUTION: The reception power of a pilot symbol is measured by a pilot reception power measurement part 104 and the reception power of a data symbol is predicted on the basis of the reception power of the pilot symbol by a data part reception power prediction part 106. A difference between the predicted value and the actual reception power of the data symbol is obtained by a power comparison part 107, and it is defined that the data symbol at the hopping position collides with the data symbol of the other cell in the case that the difference is large by a colliding position detection part 108. Then, in an error correction decoding part 103, by performing an error correction processing in which the likelihood of the data symbol whose collision is detected is lowered, the error rate characteristics of the decoding data are improved. PCOPYRIGHT: (C)2004,JPO&NCIPI