Patent ID: 8934834
Filing Date: 2015-01-13
Classification: H04B

Abstract:
1. An on-channel repeater, comprising: a receiving means for receiving a Radio Frequency (RF) signal; a subtracting means for subtracting a replica of feedback signals from the signal received by the receiving means; a replica generating means for calculating the replica based on the signal acquired from the subtraction in the subtracting means and feeding back the replica to the subtracting means; an inverse channel estimating means for estimating inverse of a reception channel based on the signal acquired from the subtraction in the subtracting means and generating filter tab coefficients; a first adaptive filtering means for compensating for channel distortion of the signal subtracted by the subtracting means based on the filter tab coefficients generated in the inverse channel estimating means; and a transmitting means for converting a signal whose channel distortion is compensated by the first adaptive filtering means into an RF signal and performing radio transmission, wherein the filter tab coefficients are generated by using an error signal in a time domain based on the channel distortion of the reception channel, and wherein the filter tab coefficients are calculated by using a channel error signal calculated based on channel distortion information of a repeater reception channel, previous filter tab coefficients, a constant for determining a convergence speed, a number of filter tabs, and a transpose.