发明名称 |
KALMAN-VITERBI JOINT CHANNEL EQUALIZER |
摘要 |
<p>In a channel equalizer applicable to a digital television receiver, a forwar d filter and a backward filter perform filtering to an input signal and a predetermined signal. A Viterbi decoder corrects errors during a transmissio n procedure in a blind mode. A training symbol storing block stores training symbols. An output signal of the Viterbi decoder and symbols are provided to the backward filter in accordance with a blind mode or a training mode. A Kalman gain is calculated in a Kalman gain calculating block and an error signal is calculated by comparing an equalized signal, symbols, and the outp ut signal of the Viterbi decoder with one another. A tap coefficient is updated by using the calculated error signal and the Kalman gain.</p> |
申请公布号 |
CA2482815(A1) |
申请公布日期 |
2003.10.30 |
申请号 |
CA20032482815 |
申请日期 |
2003.04.17 |
申请人 |
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE |
发明人 |
SIM, YONG-HUN;KIM, SUNG-HOON;KIM, DAE-JIN;KIM, SEUNG-WON;AHN, CHIETEUK |
分类号 |
H04N7/015;H04L25/03;H04N5/21;H04N5/44;H04N7/12;(IPC1-7):H04N7/015 |
主分类号 |
H04N7/015 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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