Coding and decoding scheme for Turbo code and multi-dimensional modulating cascade system |
Title： |
| Coding and decoding scheme for Turbo code and multi-dimensional modulating cascade system |
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Application Number： |
200510011229 |
Application Date： |
2005/01/21 |
Announcement Date： |
2005/07/27 |
Pub. Date： |
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Publication Number： |
1645752 |
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： |
H03M 13/29, H03M 13/27, H03M 13/23 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Qi Xin, Zhou Shidong, Zhao Ming |
Key Words： |
Turbo code, multi-dimensional modulating, cascade system, coding, decoding |
Abstract： |
The method includes following steps: at transmitting end, different type modulation is made for the stream of bits outputted from Turbo encoder;the message and bits sequence is modulated by using traditional 2D Gray mapping QPSKJ modulation; the check bit sequence is modulated by using many dimension QPSK; at reception end, the combined iterative demodulation and decoding between the Turbo decode and iterative demodulation of many dimension modulation is made; the iterative demodulation makes the traditional Turbo code not to be utilized due to not being able to use the posterior probability of check bit. |
Claim： |
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Priority： |
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PCT： |
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