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A Study of Spreading code for Watermarking of TxID of ATSC-DTV  

Cha Jae-Sang (Dept. of Media Engineering, Seoul National Univ. of Technology)
Choi Seong-Jin (Dept. of Media Engineering, Seoul National Univ. of Technology)
Lee Seon-Hee (Dept. of Media Engineering, Seoul National Univ. of Technology)
Lee Kwang-Jik (Dept. of Media Engineering, Seoul National Univ. of Technology)
Lee Yong-Tae (Digital Broadcasting Research Division, Broadcasting System Dept., ETRI)
Park Goo-Man (Dept. of Media Engineering, Seoul National Univ. of Technology)
Publication Information
Journal of Broadcast Engineering / v.11, no.1, 2006 , pp. 100-106 More about this Journal
Abstract
In this paper, we proposed a TxID(Transmitter Identification) system using ZCD (Zero Correlation Duration) code as interference-cancelled spread codes for single frequency network of ATSC terrestrial DTV broadcasting. ZCD codes are simply implemented and have ZCD characteristics. Then, Proposal system can fundamentally solve interference problems caused by ICI(Inter Code Interference) and MPI(Multi-Path Interference) which happens in TxID system using spread coding method. Also, those can cancel truncated error which happens at watermarking for TxID since those can remove its period. In this paper, we identified the availability of TxID system applying interference-cancelled ZCD codes by analyzing DER (Detection Error Rate) which is simulated in various interference environments such as AWGN, ICI, and MPI.
Keywords
DTV; ZCD; TxID;
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