发明授权
- 专利标题: Polarization mode dispersion compensation in multilevel coded-modulation schemes using blast algorithm and iterative polarization cancellation
- 专利标题(中): 使用爆炸算法和迭代偏振消除的多级编码调制方案中的偏振模色散补偿
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申请号: US12392294申请日: 2009-02-25
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公开(公告)号: US08385439B2公开(公告)日: 2013-02-26
- 发明人: Ivan B. Djordjevic , Lei Xu , Ting Wang
- 申请人: Ivan B. Djordjevic , Lei Xu , Ting Wang
- 申请人地址: US NJ Princeton
- 专利权人: NEC Laboratories America, Inc.
- 当前专利权人: NEC Laboratories America, Inc.
- 当前专利权人地址: US NJ Princeton
- 代理商 Joseph Kolodka; James Bitetto
- 主分类号: H04K1/10
- IPC分类号: H04K1/10 ; H04K3/00 ; H04B10/06
摘要:
Receivers and methods are provided for polarization mode dispersion compensation in multi-level coded-modulation schemes using a BLAST algorithm and iterative polarization cancellation. A receiver includes a vertical Bell Laboratories Layered Space-Time Architecture (V-BLAST) orthogonal frequency division multiplexing (OFDM) detector configured to receive input sequences and partially cancel polarization interference with respect to the input sequences to output symbol estimates for the input sequences. The receiver further includes one or more low-density parity-check (LDPC) decoders coupled to the V-BLAST OFDM detector configured to receive channel bit reliabilities and output code words. The channel bit reliabilities are indirectly calculated from the symbol estimates. The one or more LDPC decoders iteratively provide extrinsic soft information feedback to the V-BLAST OFDM detector to compensate for the polarization interference.
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