发明名称 |
Decoding system and method for digital communications |
摘要 |
A Viterbi decoding system interprets bits in received QAM constellations as many-valued parameters rather than binary valued parameters. It performs the Viterbi algorithm using these many-valued parameters to provide results superior to hard decision decoding. Rather than applying a hard 0-1 function to the QAM data, the system uses a non-stepped linear or curved transfer function to assign values to the bits. In another aspect, a system differentiates between data bits based on their estimated reliability, giving more emphasis to decoding reliable bits than unreliable bits using any of a variety of techniques. By differentiating between god and bad bits and de-emphasizing or ignoring unreliable bits, the system can provide a significant reduction in uncorrectable errors and packet loss. |
申请公布号 |
US7173972(B2) |
申请公布日期 |
2007.02.06 |
申请号 |
US20010816810 |
申请日期 |
2001.03.23 |
申请人 |
ATHEROS COMMUNICATIONS, INC. |
发明人 |
THOMSON JOHN S.;HUSTAD PAUL J.;TEHRANI ARDAVAN M.;GILBERT JEFFREY M.;MCFARLAND WILLIAM J.;THON LARS E.;WANG YI-HSIU |
分类号 |
H04K1/10;H03M13/25;H03M13/41;H04J11/00;H04L1/00;H04L27/28;H04L27/38 |
主分类号 |
H04K1/10 |
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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