发明名称 |
ENHANCED DECODING AND DEMAPPING METHOD AND APPARATUS FOR QAM DATA SIGNALS |
摘要 |
A receiver circuit, including a multi-stage QAM de-mapper, for receiving a QAM data signal is disclosed. A first de-mapper circuit recovers a set of encoded data bits from the QAM data signal by calculating a plurality of distances between a received QAM symbol and each of a plurality of possible constellation points. A second de-mapper circuit then generates a set of unencoded data bits for the received QAM symbol based, at least in part, on the plurality of distances calculated by the first de-mapper circuit. The receiver circuit may further include a decoder circuit to decode the set of encoded data bits recovered by the first de-mapper circuit. The second de-mapper circuit may identify a subset of the plurality of possible constellation points based on a result of the decoding and select a constellation point that is associated with the shortest distance of the plurality of distances. |
申请公布号 |
EP2926517(A1) |
申请公布日期 |
2015.10.07 |
申请号 |
EP20130793040 |
申请日期 |
2013.11.07 |
申请人 |
QUALCOMM INCORPORATED |
发明人 |
ZHAO, LU;BRUECK, STEFAN;SCHLUPKOTHEN, STEPHAN;AMIN, MUHAMMAD AWAIS;MONTOJO, JUAN;WERNER, MARC W.;SCHOENEICH, HENDRIK |
分类号 |
H04L27/34 |
主分类号 |
H04L27/34 |
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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