INTER-CARRIER INTERFERENCE REMOVAL DEVICE AND RECEPTION DEVICE USING THE SAME

摘要

An inter-carrier interface removal device can improve estimation accuracy of inter-carrier interference caused by Doppler shift in a received multi-carrier signal moving at a high speed, and a reception characteristic of the multi-carrier signal after removing the inter-carrier interference. The inter-carrier interference removal device includes: a channel estimation unit (101) estimating a channel frequency characteristic according to a carrier signal; an equalization unit (102) equalizing the carrier signal with the channel frequency characteristic and outputs tentative carrier data; a reliability value calculation unit (103) calculating a reliability value according to the channel frequency characteristic; a weighting unit (104) weighting the tentative carrier data with the reliability value; and an ICI component estimation unit (106) estimating an ICI component according to the weighted tentative carrier data and the estimated channel frequency characteristic; and an ICI removal calculation unit (107) removing the ICI component from the carrier signal.