公开(公告)号：US20120198502A1

公开(公告)日：2012-08-02

申请号：US13438570

申请日：2012-04-03

申请人： Liming Qin ,  Marwan Adas ,  Prachi Raikar ,  David Roos ,  Yezdi Antia ,  Neal Becker

发明人： Liming Qin ,  Marwan Adas ,  Prachi Raikar ,  David Roos ,  Yezdi Antia ,  Neal Becker

IPC分类号： H04N21/60

CPC分类号： H04N21/6143 ,  H03M13/1165 ,  H04N7/20 ,  H04N21/236 ,  H04N21/238 ,  H04N21/2381 ,  H04N21/2389

摘要： A receiver is used with third code blocks based on first code blocks, second code blocks, and a planning code block. The first code blocks are associated with a first sequence number and modulated with a first modulation scheme. The second code blocks are associated with a second sequence number and modulated with a second modulation scheme. The planning code block associates the third code blocks with the first code blocks and the second code blocks. The receiver includes a de-multiplexing portion, which includes a code block selector and a look up table, that outputs a de-multiplexed signal based on the third code blocks. The code block selector selects a code block from the third code blocks to output as the de-multiplexed signal based on entries in the look up table. The receiver also includes a recovery portion that outputs received code blocks based on the de-multiplexed signal.

摘要翻译： 基于第一代码块，第二代码块和规划代码块的第三代码块使用接收器。 第一码块与第一序列号相关联，并用第一调制方案进行调制。 第二码块与第二序列号相关联，并用第二调制方案进行调制。 规划代码块将第三代码块与第一代码块和第二代码块相关联。 接收机包括解复用部分，其包括代码块选择器和查找表，其基于第三代码块输出解复用信号。 代码块选择器从第三代码块中选择代码块，作为基于查找表中的条目的解复用信号输出。 接收机还包括基于解复用信号输出接收码块的恢复部分。

公开(公告)号：US09236936B2

公开(公告)日：2016-01-12

申请号：US13601643

申请日：2012-08-31

申请人： Liming Qin ,  Alexei Duhovich ,  Chetan Tekur

发明人： Liming Qin ,  Alexei Duhovich ,  Chetan Tekur

IPC分类号： H04L12/56 ,  H04B7/185

CPC分类号： H04B7/18582 ,  H04L2212/00

摘要： Systems and methods for performing preprocessing of received data packets, to reduce processing burdens and improve efficiency of communications terminal receivers, are provided. A first stage filter receives a data frame comprising data packets representing respective encapsulated fragments of a PDU. The first stage filter parses a header of one of the packets to locate a start field, and determines whether the start field indicates that the packet comprises a start fragment of the PDU. When the start field indicates that the packet comprises the start fragment, the first stage filter determines, based on packet label information of the packet header, whether to forward the packet to a second stage filter or to discard the packet, and forwards or discards the packet accordingly. When the start field indicates that the packet does not comprise the start fragment, the first stage filter forwards the packet to the second stage filter.

摘要翻译： 提供了用于执行接收的数据分组的预处理以减少处理负担并提高通信终端接收机的效率的系统和方法。 第一级过滤器接收包括代表PDU的相应封装片段的数据分组的数据帧。 第一级过滤器解析其中一个分组的报头以定位起始字段，并且确定开始字段是否指示该分组包括PDU的起始片段。 当起始字段指示分组包括起始片段时，第一阶段过滤器基于分组报头的分组标签信息确定是将分组转发到第二阶段过滤器还是丢弃该分组，并且转发或丢弃该分组 分组。 当起始字段指示分组不包括起始分段时，第一阶段过滤器将分组转发到第二阶段过滤器。

公开(公告)号：US06765971B1

公开(公告)日：2004-07-20

申请号：US09634092

申请日：2000-08-08

申请人： Liming Qin

发明人： Liming Qin

IPC分类号： H04L700

CPC分类号： H04B3/23 ,  H04L25/03038 ,  H04M9/082

摘要： A digital signal detection system, method and computer program product, including (a) partitioning a digital signal into a plurality of frames; (b) calculating a number of zero crossings of the digital signal within each frame; (c) determining whether or not an absolute value of a difference of the number of zero crossings in between frames is less than a first predetermined value; (d) determining whether or not a sum of the zero crossings of the frames is greater than or equal to a second predetermined value and less than or equal to a third predetermined value; (e) calculating a maximum amplitude of the digital signal for each of the frames; (f) calculating an average amplitude of the digital signal for all of the frames; (g) determining whether or not an absolute value of a difference between the maximum amplitude of a frame and the average amplitude is less than a fourth predetermined value times the average amplitude for each of the frames; and (h) determining that a frame contains a narrowband digital signal if the determining steps (c), (d), and (g) are met. The system, method and computer program product are applicable to signal detection circuits, echo cancellation circuits and telecommunications systems.

摘要翻译： 一种数字信号检测系统，方法和计算机程序产品，包括（a）将数字信号划分成多个帧; （b）计算每帧内数字信号的零交叉数; （c）确定帧之间的过零数量的差的绝对值是否小于第一预定值; （d）确定帧的零交叉的和是否大于或等于第二预定值并小于或等于第三预定值; （e）计算每个帧的数字信号的最大幅度; （f）计算所有帧的数字信号的平均振幅; （g）确定帧的最大幅度和平均幅度之间的差的绝对值是否小于每个帧的平均幅度的第四预定值乘以; 以及（h）如果满足确定步骤（c），（d）和（g），则确定帧包含窄带数字信号。 系统，方法和计算机程序产品适用于信号检测电路，回波消除电路和电信系统。

公开(公告)号：US08793745B2

公开(公告)日：2014-07-29

申请号：US13438570

申请日：2012-04-03

申请人： Liming Qin ,  Marwan Adas ,  Prachi Raikar ,  David Roos ,  Yezdi Antia ,  Neal Becker

发明人： Liming Qin ,  Marwan Adas ,  Prachi Raikar ,  David Roos ,  Yezdi Antia ,  Neal Becker

IPC分类号： H04N7/20 ,  H04N21/236 ,  H04N21/238

CPC分类号： H04N21/6143 ,  H03M13/1165 ,  H04N7/20 ,  H04N21/236 ,  H04N21/238 ,  H04N21/2381 ,  H04N21/2389

摘要： A receiver is used with third code blocks based on first code blocks, second code blocks, and a planning code block. The first code blocks are associated with a first sequence number and modulated with a first modulation scheme. The second code blocks are associated with a second sequence number and modulated with a second modulation scheme. The planning code block associates the third code blocks with the first code blocks and the second code blocks. The receiver includes a de-multiplexing portion, which includes a code block selector and a look up table, that outputs a de-multiplexed signal based on the third code blocks. The code block selector selects a code block from the third code blocks to output as the de-multiplexed signal based on entries in the look up table. The receiver also includes a recovery portion that outputs received code blocks based on the de-multiplexed signal.

摘要翻译： 基于第一代码块，第二代码块和规划代码块的第三代码块使用接收器。 第一码块与第一序列号相关联，并用第一调制方案进行调制。 第二码块与第二序列号相关联，并用第二调制方案进行调制。 规划代码块将第三代码块与第一代码块和第二代码块相关联。 接收机包括解复用部分，其包括代码块选择器和查找表，其基于第三代码块输出解复用信号。 代码块选择器从第三代码块中选择代码块，作为基于查找表中的条目的解复用信号输出。 接收机还包括基于解复用信号输出接收码块的恢复部分。

公开(公告)号：US20140064280A1

公开(公告)日：2014-03-06

申请号：US13601643

申请日：2012-08-31

申请人： Liming Qin ,  Alexei Duhovich ,  Chetan Tekur

发明人： Liming Qin ,  Alexei Duhovich ,  Chetan Tekur

IPC分类号： H04L12/56

CPC分类号： H04B7/18582 ,  H04L2212/00

摘要： Systems and methods for performing preprocessing of received data packets, to reduce processing burdens and improve efficiency of communications terminal receivers, are provided. A first stage filter receives a data frame comprising data packets representing respective encapsulated fragments of a PDU. The first stage filter parses a header of one of the packets to locate a start field, and determines whether the start field indicates that the packet comprises a start fragment of the PDU. When the start field indicates that the packet comprises the start fragment, the first stage filter determines, based on packet label information of the packet header, whether to forward the packet to a second stage filter or to discard the packet, and forwards or discards the packet accordingly. When the start field indicates that the packet does not comprise the start fragment, the first stage filter forwards the packet to the second stage filter.

摘要翻译： 提供了用于执行接收的数据分组的预处理以减少处理负担并提高通信终端接收机的效率的系统和方法。 第一级过滤器接收包括代表PDU的相应封装片段的数据分组的数据帧。 第一级过滤器解析其中一个分组的报头以定位起始字段，并且确定开始字段是否指示该分组包括PDU的起始片段。 当起始字段指示分组包括起始片段时，第一阶段过滤器基于分组报头的分组标签信息确定是将分组转发到第二阶段过滤器还是丢弃该分组，并且转发或丢弃该分组 分组。 当起始字段指示分组不包括起始分段时，第一阶段过滤器将分组转发到第二阶段过滤器。