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    • 10. 发明授权
    • Increasing error correction in data streams encoded with linear block code
    • 增加用线性块码编码的数据流中的纠错
    • US07921351B2
    • 2011-04-05
    • US11679246
    • 2007-02-27
    • Thomas H. WilliamsLuis Alberto Campos
    • Thomas H. WilliamsLuis Alberto Campos
    • H03M13/00
    • H04L1/0061H04L1/0045H04L1/0065
    • Disclosed is an apparatus and method for increasing the error correction capabilities of a receiver circuit that receives a data stream of encoded data symbols that are encoded with a linear block code. Analog and digital comparator circuits are used to detect laser clipping or analog to digital converter overloading. Corrupted symbols are detected by comparing in-phase and/or quadrature phase baseband signals with pre-determined threshold limits that indicate that the in-phase and quadrature phase signals have exceeded the normal signal trajectory of an unimpaired signal. Corrupted symbols may also be detected by determining that the laser has been clipped. Corrupted symbols are marked for erasure prior to decoding and error correction. Erasure of corrupted signals increases the error correction capabilities of the decoder circuit.
    • 公开了一种用于增加接收电路的纠错能力的装置和方法,该接收机电路接收用线性块码编码的编码数据符号的数据流。 模拟和数字比较电路用于检测激光削波或模数转换器过载。 通过将同相和/或正交相位基带信号与预先确定的阈值极限进行比较来检测损坏的符号,这些阈值极限指示同相和正交相位信号已经超过未损坏信号的正常信号轨迹。 也可以通过确定激光被剪切来检测损坏的符号。 损坏的符号在解码和纠错之前被标记为擦除。 擦除损坏的信号会增加解码器电路的纠错能力。