Patent ID: 8654893
Filing Date: 2014-02-18
Classification: H04L

Abstract:
1. A communication device, comprising: a receiver that receives a multicarrier signal having a plurality of subcarriers including frequency bands used for transmitting data and pilot signals, wherein a guard interval is provided after the end of the plurality of subcarriers; and a processor that performs channel estimating processes including, generating temporary channel estimation values from pilot signals located in the frequency bands, based on known information on the pilot signals; generating a virtual channel estimation value sequence to be located on the guard interval, based on the generated temporary channel estimation values corresponding to the frequency bands included in the multicarrier signal; generating a channel estimation value sequence corresponding to a predetermined frequency bandwidth by combining the generated virtual channel estimation value sequence with the plurality of temporary channel estimation values; and generating channel estimation values related to any ones of the plurality of subcarriers by use of the channel estimation value sequence, and the processor generates the virtual channel estimation value sequence so that the channel estimation value sequence corresponding to the predetermined frequency bandwidth has substantially-coincident channel estimation values with respect to maximum and minimum frequency bands in the channel estimation value sequence, and forms a waveform that is smoothly continuous on the whole on a frequency-axis.