Patent ID: 9621381
Date: 2017-04-11
CPC Classifications: H04B,H04L

Claim:
1. A communication apparatus, comprising: a first equalizer configured to receive an oversampled sample to perform equalization of a frequency band based on a finite impulse response (FIR) filtering and output a decimated sample; a receiving state estimation unit configured to receive the decimated sample to detect information of a transmission scheme and generate a mode switching signal at a synchronization timing depending on a corresponding modulation scheme and a frame length; and a filter update processing unit configured to allow a separate second equalizer to receive the oversampled sample from the first equalizer to perform the equalization of the frequency band and use data output from the separate second equalizer to update tap coefficients for the FIR filtering, provide the updated tap coefficients to the first equalizer and switch from a blind mode to a data-aided (DA) mode depending on the mode switching signal to perform the update of the tap coefficients.