发明名称 |
DECODER UTILIZING SOFT INFORMATION OUTPUT TO MINIMIZE ERROR RATES |
摘要 |
A coding system is disclosed wherein the receive side includes a decoder capable of producing, in addition to the hard information decoded output, either or both symbol and/or bit soft information values. For a certain information bit position, a value proportional to the joint probability that a received symbol and the set of all hypothesized transmitted codewords led to the estimated or detected hard information output is calculated. The calculated probabilities with respect to plural codewords having a zero in that certain information bit position are compared to the calculated probabilities with respect to the plural codewords having a one in that certain information bit position. The result of the comparison provides an indication of whether the hard information output in that same information bit position is more likely a one or a zero. The output soft information values are further processed in comparison to a preset threshold, with instances exceeding the threshold triggering block rejections and/or retransmissions.
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申请公布号 |
CA2263444(A1) |
申请公布日期 |
1998.02.19 |
申请号 |
CA19972263444 |
申请日期 |
1997.08.13 |
申请人 |
ERICSSON, INC. |
发明人 |
KHAYRALLAH, ALI S.;WANG, YI-PIN ERIC;BALACHANDRAN, KUMAR;RAMESH, RAJARAM;HASSAN, AMER A. |
分类号 |
H04L1/00;H03M13/09;H03M13/13;H03M13/15;H03M13/29;H03M13/37;H03M13/45;H04L1/16;H04L1/18;H04L25/06;(IPC1-7):H03M13/00;H04L1/20 |
主分类号 |
H04L1/00 |
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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