Patent ID: 8184753

Claim:
An apparatus for orthogonal frequency division multiplexing (OFDM) channel equalization, comprising: a compensation value setting unit setting a compensation value in the form of a diagonal matrix by using a diagonal matrix of diagonal elements extracted from a channel matrix of an OFDM receiver, and a preset divergence suppression value, to suppress divergence caused by Jacobi iteration in the channel equalization of the OFDM receiver; an initial estimate value calculation unit calculating an initial estimate value by using a fast Fourier transform (FFT)-processed signal of the OFDM receiver and the compensation value from the compensation value setting unit; an equalization unit obtaining an interference trigger value by using the compensation value from the compensation value setting unit, the channel matrix and the diagonal matrix, multiplying the interference trigger value by a symbol-determined pre-equalized signal to obtain an interference cancellation compensation value, and subtracting the interference cancellation compensation value from the initial estimate value to detect a transmission signal to be processed; and a symbol decision unit determining a symbol for an adjacent signal of a transmission signal, which is to be processed among a plurality of signals output from the equalization unit, and providing the symbol-determined adjacent signal to the equalization unit.