Patent ID: 8107909
Filing Date: 2012-01-31
Classification: H04B,H04J

Abstract:
1. A reception device which receives a radio signal including a first known signal, a second known signal, a third known signal, and a fourth known signal that are disposed in a scattered manner in a time direction and a frequency direction, the reception device comprising: an estimation information calculator configured to calculate channel estimation information for each of the first known signal, the second known signal, the third known signal, and the fourth known signal, the channel estimation information indicating estimation of a characteristic of a channel of the radio signal; a first interpolation unit configured to interpolate channel estimation information on an intersection by using the channel estimation information on each of the first known signal and the fourth known signal, the intersection being where a line joining the first known signal and the fourth known signal intersects with a line joining the second known signal and the third known signal; a second interpolation unit configured to interpolate channel estimation information on the intersection by using the channel estimation information on each of the second known signal and the third known signal; and a noise power calculator configured to calculate noise power of the radio signal on the basis of a difference between the channel estimation information interpolated by the first interpolation unit and the channel estimation information interpolated by the second interpolation unit.