Patent ID: 8374298
Filing Date: 2013-02-12
Classification: H04B,H04L

Abstract:
1. A receiving apparatus of a MIMO system comprising: a unit that transforms a single carrier signal into a frequency domain signal and that performs processing of equalization by signal processing in the frequency domain; a residual interference calculation unit that calculates a residual interference due to an interference from at least one of transmission antennas other than a transmission antenna of interest in a transmission side and to a multipath interference; a likelihood correction unit that corrects a likelihood of an equalized signal using the residual interference; an FFT (Fast Fourier Transform) unit that transforms a single-carrier signal received into a frequency domain signal and that outputs a noise-suppressed frequency domain channel estimation value; a weight calculation unit that calculates an equalizing weight from the noise-suppressed frequency domain channel estimation value output from the FFT unit; an equalization filter that performs the processing of equalizing a received signal in the frequency domain by the equalizing weight; and an IDFT (Inverse Discrete Fourier Transform) unit that transforms a frequency domain equalized signal by the equalization filter into a time domain equalized signal; wherein the likelihood correction unit corrects a likelihood of the equalized signal using the time domain equalized signal by the IDFT unit and the residual interference calculated by the residual interference calculation unit.