发明名称 |
Apparatus and method for reducing Bit Error Rates (BER) and Frame Error Rates (FER) using turbo decoding in a digital communication system |
摘要 |
An Forward Error Correction (FEC) apparatus and method for reducing Bit error rates (BER) and Frame Error Rates (FER) using turbo decoding in a digital communication system. In a constituent decoder for decoding a turbo code, a first adder calculates the LLR of a received code symbol by calculating the difference between the probability of the code symbol being 1 and that of the code symbol being 0 at an arbitrary state of a turbo decoding trellis. A second adder adds the transmission information and a priori information of the code symbol. A third adder calculates the difference between the outputs of the first and second adders as extrinsic information. A first multiplier multiplies the output of the third adder by a predetermined weighting factor as a feedback gain. A correction value calculator calculates a correction value using the difference between the best metric and the second best metric of the code symbol. A fourth adder adds the correction value to the output of the first multiplier.
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申请公布号 |
US7032156(B2) |
申请公布日期 |
2006.04.18 |
申请号 |
US20030622508 |
申请日期 |
2003.07.21 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
YU NAM-YUL;KIM MIN-GOO;HA SANG-HYUCK |
分类号 |
H03M13/45;H03M13/29;H03M13/37;H03M13/39;H03M13/41;H04L1/00 |
主分类号 |
H03M13/45 |
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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