发明名称 |
64/256 quadrature amplitude modulation trellis coded modulation decoder |
摘要 |
A quadrature amplitude modulation (QAM) trellis coded modulation (TCM) decoder for decoding a stream of QAM TCM signals is disclosed. Each of the signals has a plurality of associated branch metrics and has an in-phase component and a quadrature component. The in-phase component is defined by a plurality of in-phase symbols and the quadrature component is defined by a plurality of quadrature symbols. The QAM TCM decoder includes a first Viterbi decoder and a second Viterbi decoder. The first Viterbi decoder is configured to receive an in-phase component of a QAM TCM signal for decoding the associated in-phase symbols into an in-phase decoded bit and a plurality of uncoded in-phase bits. The second Viterbi decoder configured to receive a quadrature component of the QAM TCM signal for decoding the associated quadrature symbols into a quadrature decoded bit and a plurality of uncoded quadrature bits. The first and second Viterbi decoders are adapted to decode 64- or 256-QAM TCM signals.
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申请公布号 |
US6269129(B1) |
申请公布日期 |
2001.07.31 |
申请号 |
US19980066048 |
申请日期 |
1998.04.24 |
申请人 |
LSI LOGIC CORPORATION |
发明人 |
RHEE DOJUN;SOUVANTHONG CHANTHACHITH |
分类号 |
H03M13/25;H03M13/41;H04L1/00;(IPC1-7):H03D1/00 |
主分类号 |
H03M13/25 |
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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