Abstract: The present invention relates to a positively-charged body for a triboelectric generator and a triboelectric generator including the same. More particularly, the present invention relates to a positively-charged body based on a two-dimensional material including silicon oxide, and to a triboelectric generator including such a positively-charged body. Thus, a conventional manner in which the positively-charged body is mainly composed of a metal thin film or polymer is not used, but the positively-charged body is made of the silicon oxide and the two-dimensional material. Thus, charge generation efficiency of the generator via contact between the positively-charged body and a negatively-charged body may be dramatically enhanced.

Abstract: The present invention relates to a positively-charged body for a triboelectric generator and a triboelectric generator including the same. More particularly, the present invention relates to a positively-charged body based on a two-dimensional material including silicon oxide, and to a triboelectric generator including such a positively-charged body. Thus, a conventional manner in which the positively-charged body is mainly composed of a metal thin film or polymer is not used, but the positively-charged body is made of the silicon oxide and the two-dimensional material. Thus, charge generation efficiency of the generator via contact between the positively-charged body and a negatively-charged body may be dramatically enhanced.

Abstract: Disclosed are an apparatus and a method for changing a channel prediction depending on the degree of downlink channel variation in predicting an uplink channel for uplink pre-equalization. N number of Doppler frequency ranges are set according to downlink channel variation degrees, and uplink channel prediction schemes corresponding to the respective Doppler frequency ranges are established. A Doppler frequency is measured from a signal received over a downlink channel, and the Doppler frequency range, within which the measured Doppler frequency is included, is determined from among the Doppler frequency ranges. The channel prediction scheme established corresponding to the determined Doppler frequency is selected, and the uplink pre-equalization is performed by using the selected channel prediction scheme. This enables uplink pre-equalization that is suitable for a channel varying with a terminal's moving speed or other channel environments.

Abstract: Disclosed are an apparatus and a method for changing a channel prediction depending on the degree of downlink channel variation in predicting an uplink channel for uplink pre-equalization. N number of Doppler frequency ranges are set according to uplink channel variation degrees, and channel prediction schemes corresponding to the respective Doppler frequency ranges are established. A Doppler frequency is measured from a signal received over a downlink channel, and the Doppler frequency range, within which the measured Doppler frequency is included, is determined from among the Doppler frequency ranges. The channel prediction scheme established corresponding to the determined Doppler frequency is selected, and the uplink pre-equalization is performed by using the selected channel prediction scheme. This enables uplink pre-equalization that is suitable for a channel varying with a terminal's moving speed or other channel environments.