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Study on Improvement of DTV Signal Reception Performance Using New Mobile Channel Modelling and Estimation Algorithm  

Lee, Chong-Hyun (Dept. of Ocean Science, Cheju National Univ.)
Kim, Kwang-Ho (Dept. of Media Engineering, Seoul National Univ. of Technology)
Kim, Kwang-Ho (Dept. of Media Engineering, Seoul National Univ. of Technology)
Cha, Jae-Sang (Dept. of Media Engineering, Seoul National Univ. of Technology)
Publication Information
Journal of Broadcast Engineering / v.11, no.4, 2006 , pp. 521-532 More about this Journal
Abstract
Recently, many research initiatives have been underway to improve reception performance of ATSC based DTV signal in mobile channel by adopting multiple antennas. In this paper, we propose a new mobile channel model which can be applicable to any array geometry. And then we propose new channel estimation algorithm which uses PN5l1 sequence in field synch. The proposed algorithm is to estimate channel by correlating the input signal in If frequency band and finding maximum peak, which does not need complicated synchronization circuit. Finally, we propose new receiver structures which can be implemented at the front-end of the existing receiver with no modification. With computer simulation, we verify the performance of the proposed model and verify the performance of the receiver structure with computer simulation.
Keywords
Channel estimation; mobile channel model; digital TV; array antenna; beamforming;
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