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    Coding system and method for partial response channels
    2.
    发明授权
    Coding system and method for partial response channels 失效
    部分响应通道的编码系统和方法

    公开(公告)号：US06385255B1

    公开(公告)日：2002-05-07

    申请号：US09369746

    申请日：1999-08-06

    申请人： Steven W. McLaughlin ,  David C. Lee ,  Jonathan A. Zingman ,  John L. Fan

    发明人： Steven W. McLaughlin ,  David C. Lee ,  Jonathan A. Zingman ,  John L. Fan

    IPC分类号： H03M516

    CPC分类号： H04L1/0059 ,  H04L25/497

    摘要： A system and method for reading data to and writing data from multi-level (M-ary) partial response channels uses a trellis coder to encode an input bit stream sequence into a stream of multi-level data symbols. The data symbols are written to the partial response channel using any of a number of techniques. Preferably, the trellis coder anticipates the modulation transfer function of the partial response channel in encoding the data. Because the partial response channel has its own transfer function, the relationship between the data read from the channel and the actual input data bits is a function not only of the data encoder but also of the partial response channel. Therefore, a decoder specification used to implement the decoder takes into account the effect of the trellis encoder as well as the effect of the partial response channel.

    摘要翻译： 用于从多级（M-ary）部分响应信道读取数据并向其写入数据的系统和方法使用网格编码器将输入比特流序列编码成多级数据符号流。 数据符号使用许多技术中的任一种被写入部分响应信道。 优选地，网格编码器在编码数据时预期部分响应信道的调制传递函数。 由于部分响应信道具有其自身的传递函数，所以从信道读取的数据与实际输入数据位之间的关系不仅是数据编码器而且部分响应信道的功能。 因此，用于实现解码器的解码器规范考虑了网格编码器的效果以及部分响应信道的影响。