Patent ID: 8422597

Claim:
A method for processing received signal by applying channel status information based on Orthogonal Frequency Division Multiplexing (OFDM), the method comprising: performing a first operation of calculating a new second Channel Status Information (CSI) value CSI NEW for enhancing reliability of a received first CSI CSI RECEIVED , and applying a weight value to the calculated new second CSI value CSI NEW to calculate a third CSI value CSI WEIGHTED ; performing a second operation of applying the third CSI value CSI WEIGHTED having the weight value to a first soft-decision value S SOFTDECISION of an actually-received signal to calculate a second soft-decision value S SOFTDECISION+CSI adjusted; and performing a third operation of restrictedly controlling an output range of the calculated second soft-decision value S SOFTDECISION+CSI to finally obtain a third soft-decision value S SOFTDECISION+CSI — Bounded calculated; wherein in the second operation, by applying the first soft-decision value S SOFTDECISION and the third CSI value CSI WEIGHTED applying the weight value which is calculated in the first operation, the second soft-decision value S SOFTDECISION+CSI is calculated through the following equation, if S SOFTDECISION ≧T, S SOFTDECISION+CSI =S SOFTDECISION −CSI WEIGHTED else S SOFTDECISION+CSI =S SOFTDECISION +CSI WEIGHTED where S SOFTDECISION is a first soft-decision value of a received signal which is calculated by a soft-decision block, and T has a value where probability that a soft-decision value is determined as a binary number of 0 or 1 is the same and is changed depending on requirements.