Channel estimation apparatus, channel estimation method and program

A channel estimation method comprising:

• determining 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 is not greater than a preset threshold period;
• and
• in case it is determined 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, referring 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, allowing 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.

A non-transitory recording medium storing a program that causes a computer to execute:

• determining 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 is not greater than a preset threshold period;
• and
• in case it is determined 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, referring 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, allowing 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.