Patent ID: 8750361
Filing Date: 2014-06-10
Classification: H04J,H04L

Abstract:
1. A downlink receiver in a mobile communication system, comprising: a channel estimator for estimating channel impulse response of a selected cell from channel signals of respective cells; an equalizer for equalizing an output of the channel impulse response by the channel estimator using an equalization coefficient; a despreader for generating a symbol observation value, per code channel by despreading an output of the equalizer with a code of the selected cell; a cell interference estimator for estimating a symbol signal power and noise power of a data code channel from the symbol observation value and generating an estimated Minimum Mean Square Error (MMSE) as a chip level regeneration sample; and an interference canceler connected between an input node of the downlink receiver and the equalizer, for buffering the output of the cell interference estimator to a regeneration sample buffer of the selected cell, subtracting a sum of regeneration samples of interfering cells from an input sample signal to remove interference, and inputting a result of the subtraction to the equalizer.