公开(公告)号：US20140153672A1

公开(公告)日：2014-06-05

申请号：US13946706

申请日：2013-07-19

Applicant: QUALCOMM Incorporated

Inventor： Lu Zhao ,  Stefan Brueck ,  Stephan Schlupkothen ,  Muhammad Awais Amin ,  Juan Montojo ,  Marc W. Werner ,  Hendrik Schoeneich

IPC: H04L27/06

CPC classification number: H04L27/06 ,  H04L1/0036 ,  H04L1/005 ,  H04L1/0057 ,  H04L27/3416

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.

Abstract translation: 公开了一种用于接收QAM数据信号的包括多级QAM解映射器的接收机电路。 第一解映射器电路通过计算接收的QAM符号和多个可能的星座点中的每一个之间的多个距离，从QAM数据信号中恢复一组编码数据位。 然后，第二解映射器电路至少部分地基于由第一解映射器电路计算的多个距离来生成用于所接收的QAM符号的一组未编码数据位。 接收器电路还可以包括解码器电路，以对由第一解映射器电路恢复的编码数据位组进行解码。 第二解映射器电路可以基于解码的结果来识别多个可能的星座点的子集，并且选择与多个距离中的最短距离相关联的星座点。

公开(公告)号：US09106470B2

公开(公告)日：2015-08-11

申请号：US13946706

申请日：2013-07-19

Applicant: QUALCOMM Incorporated

Inventor： Lu Zhao ,  Stefan Brueck ,  Stephan Schlupkothen ,  Muhammad Awais Amin ,  Juan Montojo ,  Marc W. Werner ,  Hendrik Schoeneich

IPC: H03D1/24 ,  H04L27/06 ,  H04L27/34 ,  H04L1/00

CPC classification number: H04L27/06 ,  H04L1/0036 ,  H04L1/005 ,  H04L1/0057 ,  H04L27/3416

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.

Abstract translation: 公开了一种用于接收QAM数据信号的包括多级QAM解映射器的接收机电路。 第一解映射器电路通过计算接收的QAM符号和多个可能的星座点中的每一个之间的多个距离，从QAM数据信号中恢复一组编码数据位。 然后，第二解映射器电路至少部分地基于由第一解映射器电路计算的多个距离来生成用于所接收的QAM符号的一组未编码数据位。 接收器电路还可以包括解码器电路，以对由第一解映射器电路恢复的编码数据位组进行解码。 第二解映射器电路可以基于解码的结果来识别多个可能的星座点的子集，并且选择与多个距离中的最短距离相关联的星座点。