Patent ID: 8180005

Claim:
An optimal signal selecting apparatus using auxiliary equalization in a diversity receiver, comprising: a plurality of sync recovery units for extracting sync information from baseband signals, which are candidate signals, except a baseband signal selected as a current optimal signal; a plurality of auxiliary equalizers for channel-equalizing the candidate signals based on the extracted sync information; a plurality of SNR measuring units for measuring signal-to-noise ratios (SNRs) of the candidate signals inputted to the auxiliary equalizers and the candidate signals equalized in the auxiliary equalizers; an optimal signal selector for selecting an optimal candidate signal from the candidate signals by using the extracted sync information and the measured SNRs, and replacing the current optimal signal with the optimal candidate signal when reception quality of the current optimal signal is poor, wherein the optimal candidate signal is selected according to priorities: i) whether a current optional signal and a sync signal are the same; ii) output SNR of the auxiliary equalizer; and iii) input SNR of the auxiliary equalizer; and a main equalizer for equalizing the optimal candidate signal selected by the optimal signal selector.