A Novel Color Subcarrier Recovery Algorithm Based on Phase Estimation and Frequency Offset Estimation

摘要：

This paper presents implementations of recovering the color subcarrier to demodulate the chroma signal used in digital video decoder system.The signal orthogonal decomposition method is used for obtaining the phase estimation of the color burst.On the basis of this,the frequency offset can he estimated by the gradient of the phase estimations of two lines.The obtained phase and frequency offset of color burst are sent to the NCO (Numeric Controlled Oscillator) for recovering the local color subcarrier for chroma demodulation.The proposed method is compared with the conventional close loop and open loop methods.The numeric simulations and the decoding picture prove that the proposed method is effective and practical.

关键词： Digital Video Decoder Color Subcarrier Recovery Phase Estimation Frequency Offset Estimation Chroma Demodulation

作者: Qinghong Shen Bo Xiao Tao Han

作者单位: Department of Electronic Science and Engineering,Nanjing University,Nanjing,210093,China Genesis Mierochip Canada Co.Ottawa,61350,Canada

会议类型: 国际会议

会议名称: 2008年国际电子商务、工程及科学领域的分布式计算和应用学术研讨会(2008 International Symposium on Distributed Computing and Applications for Business Engineering and Science)

会议地点: 大连

会议语种:英文

页码: 258-262

在线出版日期: 2008-07-27（万方平台首次上网日期，不代表论文的发表时间）