Code modulation method and device, demodulation method and device |
Title： |
| Code modulation method and device, demodulation method and device |
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Application Number： |
200510132130 |
Application Date： |
2005/12/16 |
Announcement Date： |
2006/08/23 |
Pub. Date： |
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Publication Number： |
1822181 |
Announcement Number： |
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Grant Date： |
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Granted Pub. Date： |
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ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
G11B 20/10, H03M 7/30 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Hu Heng, Xu Duanyi, Pan Longfa, Lu Da, Xiong Jianping, Pei Jing, Ma Jianshe, Ma Pin, Xu Haizheng |
Key Words： |
Code modulation, demodulation, method, device |
Abstract： |
This invention relates to a coding modulation method, a device, a de-modulation method and a device, which transforms a data bit sequence to that of a channel bit, then replaces part of code moulds according to the connection rule and the code in the travel length of 1 for continuous 6 times does not appear in the channel bit sequence, dk and DSV control bits exist in the channel bit sequence, thus, the number of 0 between adjacent bit 1 in it is 1 at the least and k at the most by controlling the values of the dk control bit and the amplitude ratio of the frequency component of the modulated channel bit sequence is less than 20dB compared with the maximum value in the frequencies below 1/10000 and the invention also discloses a demodulation method and a device for it. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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