Patent ID: 8619921
Filing Date: 2013-12-31
Classification: H04L

Abstract:
1. A channel estimation device comprising: a channel variation detection unit that determines whether or not a variation width of a received signal level is not less than a preset threshold width and whether or not a variation period of the received signal is not greater than a preset threshold period; and a channel estimation unit that, in case the channel variation detection unit determines that the variation width of the received signal level is not less than the preset threshold width and that the variation period is not greater than the preset threshold period, refers to a hysteresis of the received signal level to determine whether or not lowering of the received signal level is temporal, and, if it is determined that lowering of the received signal level is temporal, allows the received signal to pass through, without removing the received signal as noise, even when the received signal level is not greater than a signal level to be removed as noise.