公开(公告)号：US20060285852A1

公开(公告)日：2006-12-21

申请号：US11471717

申请日：2006-06-21

申请人： Wenze Xi ,  Tulay Adali

发明人： Wenze Xi ,  Tulay Adali

IPC分类号： H04B10/12

CPC分类号： H04L25/03171

摘要： An integrated maximum a posteriori equalization and turbo product coding (IMAP-TPC) system for optical fiber communications systems (OFCS) is provided that uses probabilistic characterization of the electrical current in the presence of inter-symbol interference (ISI) and noise to compensate their effects and improve the bit error rate. In the IMAP-TPC system, turbo product code (TPC) decoding is integrated with a symbol-by-symbol maximum a posteriori (MAP) detector. The MAP detector calculates the log-likelihood ratio of a received symbol using the conditional electrical probability density information, and hence obtains a much more accurate reliability measure than the traditional measure used in the TPC decoder.

摘要翻译： 提供了一种用于光纤通信系统（OFCS）的综合最大后验均衡和涡轮产品编码（IMAP-TPC）系统，该系统在存在符号间干扰（ISI）和噪声的情况下使用电流的概率特性来补偿它们 影响并提高误码率。 在IMAP-TPC系统中，涡轮乘积代码（TPC）解码与逐符号最大后验（MAP）检测器集成。 MAP检测器使用条件电气概率密度信息计算接收符号的对数似然比，因此获得比TPC解码器中使用的传统测量更准确的可靠性度量。

公开(公告)号：US07016606B2

公开(公告)日：2006-03-21

申请号：US10204779

申请日：2001-02-28

申请人： Yi Cai ,  Tulay Adali ,  Curtis R. Menyuk

发明人： Yi Cai ,  Tulay Adali ,  Curtis R. Menyuk

IPC分类号： H04B10/08 ,  H04K3/00 ,  G06F12/00 ,  G06K5/04

CPC分类号： H04B10/25077 ,  H04J14/02

摘要： An apparatus and method of line coding to mitigate collision induced errors in Wavelength Division Multiplexing (WDM) optical communications systems is disclosed. The apparatus and method prevents Soliton-Soliton-Collision induced errors by reducing a variance in a number of possible collisions between solitons in multiple channels in a WDM fiber optic communication system using a sliding window criterion. The sliding window criterion defines a set of parametric values based on physical properties of the transmission network, a transmission frequency and a defined data block size. N-bit codes are iteratively selected and sequentially assigned to segments of a mapping table indexed by all possible unique combinations of “1”s and “0”s in a block of data. Input data blocks are mapped to corresponding code words having a reduced number of transitions for transmission on the fiber optic network. Received code words are converted back to a data stream corresponding to the input data stream.

摘要翻译： 公开了一种用于减轻波分复用（WDM）光通信系统中的冲突诱导误差的线路编码的装置和方法。 该装置和方法通过使用滑动窗口标准减少在WDM光纤通信系统中的多个信道中的孤子之间的可能的碰撞数量的变化，来防止Soliton-Soliton-碰撞引起的误差。 滑动窗口标准基于传输网络的物理属性，传输频率和定义的数据块大小来定义一组参数值。 迭代地选择N位代码并且顺序地分配给由数据块中的“1”和“0”的所有可能唯一的组合索引的映射表的段。 输入数据块被映射到具有减少数量的转换以在光纤网络上传输的对应码字。 接收的码字被转换回与输入数据流相对应的数据流。