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公开(公告)号：US07065685B2
公开(公告)日：2006-06-20
申请号：US11116612
申请日：2005-04-29
IPC分类号： H03M13/00
CPC分类号： H04L25/03012
摘要： A system and method are provided for non-causal channel equalization in a communications system. The method comprises: establishing a first threshold (V1) to distinguish a high probability “1” first bit estimate; establishing a second threshold (V0) to distinguish a high probability “0” first bit estimate; establishing a third threshold (Vopt) to distinguish first bit estimates between the first and second thresholds; receiving a non-return to zero (NRZ) data stream; comparing the first bit estimate in the data stream to a second bit value received prior to the first bit; comparing the first bit estimate to a third bit value received subsequent to the first bit; in response to the comparisons, determining the value of the first bit.
摘要翻译： 在通信系统中提供用于非因果信道均衡的系统和方法。 该方法包括：建立第一阈值（V 1）以区分高概率“1”第一比特估计; 建立第二阈值（V 0）以区分高概率“0”第一比特估计; 建立第三阈值（Vopt）以区分第一和第二阈值之间的第一位估计; 接收不归零（NRZ）数据流; 将数据流中的第一比特估计与在第一比特之前接收的第二比特值进行比较; 将所述第一比特估计与所述第一比特之后接收的第三比特值进行比较; 响应于比较，确定第一位的值。
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公开(公告)号：US07024599B2
公开(公告)日：2006-04-04
申请号：US10020426
申请日：2001-12-07
IPC分类号： H03M13/00
CPC分类号： H04L25/03012
摘要： A system and method are provided for non-causal channel equalization in a communications system. The method comprises: receiving a non-return to zero (NRZ) data stream input; establishing thresholds to distinguish a first bit estimate; comparing the first bit estimate in the NRZ data stream to a second bit value received prior to the first bit, and a third bit received subsequent to the first bit; in response to the comparisons, determining the value of the first bit; tracking the NRZ data stream inputs in response to sequential bit value combinations; maintaining long-term averages of the tracked NRZ data stream inputs; adjusting the thresholds in response to the long-term averages; and, offsetting the threshold adjustments to account for the asymmetric noise distribution. Two methods are used to offset the threshold adjustments to account for the asymmetric noise distribution: forward error correction (FEC) decoding and tracking the ratio of bit values.
摘要翻译： 在通信系统中提供用于非因果信道均衡的系统和方法。 该方法包括：接收不归零（NRZ）数据流输入; 建立阈值以区分第一位估计; 将NRZ数据流中的第一比特估计与在第一比特之前接收的第二比特值进行比较，以及在第一比特之后接收的第三比特; 响应于比较，确定第一位的值; 响应于顺序位值组合来跟踪NRZ数据流输入; 维持追踪NRZ数据流输入的长期平均值; 根据长期平均值调整阈值; 并且抵消阈值调整以解决不对称噪声分布。 两种方法用于抵消阈值调整以解决不对称噪声分布：前向纠错（FEC）解码和跟踪比特值的比率。
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3.发明授权Systems and methods for non-casual channel equalization in an asymmetrical noise environment 有权非对称噪声环境下非随机信道均衡的系统和方法公开(公告)号：US06961390B1
公开(公告)日：2005-11-01
申请号：US10066966
申请日：2002-02-04
CPC分类号： H04L25/03012 , H04L25/061
摘要： A system and method are provided for non-causal channel equalization in a communications system. The method comprises: receiving a non-return to zero (NRZ) data stream input; establishing thresholds to distinguish a first bit estimate; comparing the first bit estimate in the NRZ data stream to a second bit value received prior to the first bit, and a third bit received subsequent to the first bit; in response to the comparisons, determining the value of the first bit; tracking the NRZ data stream inputs in response to sequential bit value combinations; maintaining long-term averages of the tracked NRZ data stream inputs; adjusting the thresholds in response to the long-term averages; and, offsetting the threshold adjustments to account for the asymmetric noise distribution. Two methods are used to offset the threshold adjustments to account for the asymmetric noise distribution: forward error correction (FEC) decoding and tracking the ratio of bit values.
摘要翻译： 在通信系统中提供用于非因果信道均衡的系统和方法。 该方法包括：接收不归零（NRZ）数据流输入; 建立阈值以区分第一位估计; 将NRZ数据流中的第一比特估计与在第一比特之前接收的第二比特值进行比较，以及在第一比特之后接收的第三比特; 响应于比较，确定第一位的值; 响应于顺序位值组合来跟踪NRZ数据流输入; 维持追踪NRZ数据流输入的长期平均值; 根据长期平均值调整阈值; 并且抵消阈值调整以解决不对称噪声分布。 两种方法用于抵消阈值调整以解决不对称噪声分布：前向纠错（FEC）解码和跟踪比特值的比率。
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公开(公告)号：US07289530B1
公开(公告)日：2007-10-30
申请号：US10413167
申请日：2003-04-14
CPC分类号： H04L1/0065 , H03M13/1515 , H03M13/152 , H03M13/2906 , H03M13/2948 , H03M13/618 , H04J3/1652 , H04L1/005 , H04L1/0057
摘要： A system and method are provided for coding a frame in a packet communications system using a G.709 Digital Wrapper Frame format. The method comprises: accepting digital information; outer encoding the digital information with a Reed Solomon (RS) encoding scheme; interleaving the outer encoded information; inner encoding the interleaved information using a BCH encoding scheme; and, forming a G.709 Digital Wrapper frame including payload and parity bytes. More specifically, a standard DW superframe is formed with 122,368 bits of payload and 8192 bits of parity. The outer encoding process uses an RS(1023,1007) parent code. In one aspect, 15 groups of RS(781,765) and 1 group of RS(778,762) codewords are formed per superframe. The inner encoding process uses a BCH(2047,1959) parent code. In one aspect, 64 groups of BCH(2040,1952) codewords are formed per superframe.
摘要翻译： 提供了一种系统和方法，用于使用G.709数字包装机帧格式对分组通信系统中的帧进行编码。 该方法包括：接收数字信息; 用里德所罗门（RS）编码方案外部编码数字信息; 交织外编码信息; 使用BCH编码方案对交错信息进行内部编码; 并且形成包括有效载荷和奇偶校验字节的G.709数字封装帧。 更具体地，标准DW超帧形成有122,368位有效负载和8192位奇偶校验。 外部编码过程使用RS（1023,1007）父代码。 在一个方面，每个超帧形成15组RS（781,765）和1组RS（778,762）码字。 内部编码过程使用BCH（2047,1959）父代码。 在一个方面，每个超帧形成64组BCH（2040,1952）码字。
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公开(公告)号：US07895481B1
公开(公告)日：2011-02-22
申请号：US12766890
申请日：2010-04-25
IPC分类号： H03M13/00
CPC分类号： H04L25/06 , H04L1/004 , H04L25/03006 , H04L25/4923
摘要： A system and method are provided for non-causal channel equalization in a communications system. The method comprises: establishing three thresholds; receiving a binary serial data stream; comparing the first bit estimate in the data stream to a second bit value received prior to the first bit; comparing the first bit estimate to a third bit value received subsequent to the first bit; data stream inputs below the first threshold and above the third threshold are a “0” if both the second and third bits are “1” values, and as a “1” if either of the second and third values is a “1”; data stream inputs above the second threshold and below the third threshold are a “1” if both the second and third bits are a “0” value, and as a “0” if either of the second and third values is a “0”.
摘要翻译： 在通信系统中提供用于非因果信道均衡的系统和方法。 该方法包括：建立三个阈值; 接收二进制串行数据流; 将数据流中的第一比特估计与在第一比特之前接收的第二比特值进行比较; 将所述第一比特估计与所述第一比特之后接收的第三比特值进行比较; 如果第二和第三位均为“1”，则低于第一阈值且高于第三阈值的数据流输入为“0”，如果第二和第三值中的任一个为“1”，则为“1” 如果第二和第三位均为“0”，则高于第二阈值且低于第三阈值的数据流输入为“1”，如果第二和第三位中的任一个为“0”，则为“0” 。
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公开(公告)号：US07734963B2
公开(公告)日：2010-06-08
申请号：US11589466
申请日：2006-10-30
IPC分类号： H03M13/00
CPC分类号： H04L25/03006 , H04L1/004 , H04L7/048 , H04L25/06 , H04L25/4923 , H04L2025/03477
摘要： A system and method are provided for non-causal channel equalization in a communications system. The method comprises: establishing three thresholds; receiving a binary serial data stream; comparing the first bit estimate in the data stream to a second bit value received prior to the first bit; comparing the first bit estimate to a third bit value received subsequent to the first bit; data stream inputs below the first threshold and above the third threshold are a “0” if both the second and third bits are “1” values, and as a “1” if either of the second and third values is a “1”; data stream inputs above the second threshold and below the third threshold are a “1” if both the second and third bits are a “0” value, and as a “0” if either of the second and third values is a “0”.
摘要翻译： 在通信系统中提供用于非因果信道均衡的系统和方法。 该方法包括：建立三个阈值; 接收二进制串行数据流; 将数据流中的第一比特估计与在第一比特之前接收的第二比特值进行比较; 将所述第一比特估计与所述第一比特之后接收的第三比特值进行比较; 如果第二和第三位均为“1”，则低于第一阈值且高于第三阈值的数据流输入为“0”，如果第二和第三值中的任一个为“1”，则为“1” 如果第二和第三位均为“0”，则高于第二阈值且低于第三阈值的数据流输入为“1”，如果第二和第三位中的任一个为“0”，则为“0” 。
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公开(公告)号：US07149938B1
公开(公告)日：2006-12-12
申请号：US10317439
申请日：2002-12-12
IPC分类号： H03M13/00
CPC分类号： H04L25/03006 , H04L1/004 , H04L7/048 , H04L25/06 , H04L25/4923 , H04L2025/03477
摘要： A system and method are provided for non-causal channel equalization in a communications system. The method comprises: establishing three thresholds; receiving a binary serial data stream; comparing the first bit estimate in the data stream to a second bit value received prior to the first bit; comparing the first bit estimate to a third bit value received subsequent to the first bit; data stream inputs below the first threshold and above the third threshold are a “0” if both the second and third bits are “1” values, and as a “1” if either of the second and third values is a “1”; data stream inputs above the second threshold and below the third threshold are a “1” if both the second and third bits are a “0” value, and as a “0” if either of the second and third values is a “0”.
摘要翻译： 在通信系统中提供用于非因果信道均衡的系统和方法。 该方法包括：建立三个阈值; 接收二进制串行数据流; 将数据流中的第一比特估计与在第一比特之前接收的第二比特值进行比较; 将所述第一比特估计与所述第一比特之后接收的第三比特值进行比较; 如果第二和第三位均为“1”，则低于第一阈值且高于第三阈值的数据流输入为“0”，如果第二和第三值中的任一个为“1”，则为“1” 如果第二和第三位均为“0”，则高于第二阈值且低于第三阈值的数据流输入为“1”，如果第二和第三位中的任一个为“0”，则为“0” 。
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8.发明授权公开(公告)号：US06715113B1
公开(公告)日：2004-03-30
申请号：US09745764
申请日：2000-12-22
IPC分类号： H03M1337
CPC分类号： H03M13/37 , H04L1/0045 , H04L1/20
摘要： A system and method are provided for using an analysis of forward error corrections (FEC) in a digital communications signal as feedback information to improve the performance of an analog receiver system. The FEC decoder supplies the number of “1” bit and “0” bit corrections made to a control unit. In response to the FEC corrections, the control unit changes receiver control parameters. The control signal modifies processing in the receiver front end to achieve the fewest number of FEC corrections.
摘要翻译： 提供了一种用于使用数字通信信号中的前向纠错（FEC）分析的系统和方法作为反馈信息，以改善模拟接收机系统的性能。 FEC解码器提供对控制单元的“1”位和“0”位校正的数量。 响应于FEC校正，控制单元改变接收器控制参数。 控制信号修改接收机前端的处理，以实现最少数量的纠错。
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9.发明授权System and method for translating overhead bytes in a multidimensional digital frame structure 有权用于在多维数字帧结构中翻译开销字节的系统和方法公开(公告)号：US07158535B1
公开(公告)日：2007-01-02
申请号：US09746159
申请日：2000-12-22
CPC分类号： H04J3/1617 , H04L69/08 , H04L69/12 , H04L69/18
摘要： A system and method have been provided for translating digitally wrapped communications between networks using different protocols. This invention makes use of an integrated circuit (IC) relay with programmable features to modify the locations and functions of overhead bytes between the receive and transmit sides of the device, permitting two dissimilar networks to be bridged. That is, the IC relay converts frame formatting from one frame structure to another, so that incompatible networks can communicate.
摘要翻译： 已经提供了一种用于在使用不同协议的网络之间翻译数字封装通信的系统和方法。 本发明利用具有可编程特征的集成电路（IC）继电器来修改设备的接收侧和发送侧之间的开销字节的位置和功能，从而允许桥接两个不同的网络。 也就是说，IC中继将帧格式从一帧结构转换到另一帧结构，使得不兼容的网络可以通信。
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公开(公告)号：US06873605B1
公开(公告)日：2005-03-29
申请号：US09753183
申请日：2001-01-02
摘要： A system and method is provided which describe a self-healing bidirectional lines switch ring (BLSR) communication node. Two interconnected relay elements, having default and duplex input and output ports, enable bidirectional communications through a node. In the event of a ring failure, the relays can be enabled to return communications to a source node so that the ring remains unbroken.
摘要翻译： 提供了一种描述自修复双向线路交换环（BLSR）通信节点的系统和方法。 两个互连的继电器元件，具有默认和双工输入和输出端口，实现了通过节点的双向通信。 在环路故障的情况下，可以使继电器返回到源节点的通信，使得环保持不间断。
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