Patent ID: 9385908
Filing Date: 2016-07-05
CPC Classification: H04L

Claim Text:
1. A communication apparatus, comprising: an inserter that adds an element having a value of 0 into predetermined positions of a modulated signal to generate inserted data including all of the elements of the modulated signal, the number of elements of the inserted data being equal to a size of Fast Fourier Transformation (FFT); an operator that adds a pilot signal to the inserted data to generate post-operation data, in which the pilot singal comprises a data series of which the number of elements is equal to the size of FFT and of which the elements at the positions corresponding to the predetermined positions are multiplied by a first amplitude coefficient and the elements other than the elements multiplied by the first amplitude coefficient are multiplied by a second amplitude coefficient having a value different from the first amplitude coefficient; an IFFT unit that performs an Inverse Fast Fourier Transformation (IFFT) on the post-operation data; and a transmitter that generates a baseband signal based on the post-operation data on which the IFFT is performed and transmits a transmission signal generated from the baseband signal,