A novel fast algorithm of channel estimate

In a digital terrestrial broadcasting environment, since the channel characteristic may be severely distorted due to multipath interference, there is a need for an equalizer to counteract the interference. The equalizer algorithm has to meet two performance requirements: fast convergence capability and low noise enhancement. This paper proposes a simple, fast and efficient channel estimate algorithm used for the equalizer. Simulation results prove that an equalizer with the proposed algorithm can combat multipath of 0 dB magnitude and low noise enhancement. The proposed algorithm has low hardware complexity, and has a prospective application in VSB receivers in digital television terrestrial broadcasting (DTTB).