Invention Grant
US09106470B2 Enhanced decoding and demapping method and apparatus for QAM data signals
有权
用于QAM数据信号的增强解码和解映射方法和装置
- Patent Title: Enhanced decoding and demapping method and apparatus for QAM data signals
- Patent Title (中): 用于QAM数据信号的增强解码和解映射方法和装置
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Application No.: US13946706Application Date: 2013-07-19
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Publication No.: US09106470B2Publication Date: 2015-08-11
- Inventor: Lu Zhao , Stefan Brueck , Stephan Schlupkothen , Muhammad Awais Amin , Juan Montojo , Marc W. Werner , Hendrik Schoeneich
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Mahamedi Paradice LLP
- Main IPC: H03D1/24
- IPC: H03D1/24 ; H04L27/06 ; H04L27/34 ; H04L1/00

Abstract:
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.
Public/Granted literature
- US20140153672A1 ENHANCED DECODING AND DEMAPPING METHOD AND APPARATUS FOR QAM DATA SIGNALS Public/Granted day:2014-06-05
Information query
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