公开(公告)号：US20100100795A1

公开(公告)日：2010-04-22

申请号：US12581063

申请日：2009-10-16

申请人： Shaw YUAN ,  Arndt MUELLER

发明人： Shaw YUAN ,  Arndt MUELLER

IPC分类号： H03M13/05 ,  G06F11/10

CPC分类号： H04L1/0041 ,  H04L1/0057

摘要： According to some embodiments of the disclosed method and apparatus, systems and methods are provided that utilize extra payload capacity present in a symbol pad of a PHY payload to decrease the coding rate of an FEC coding scheme without increasing the symbol rate or decreasing the PHY rate of a corresponding data transmission. If a symbol pad length that would result from encoding a MAC frame using a default coding scheme would be at least as great as a parity length of the default coding scheme, and a new coding scheme maintaining the same parity length but having a reduced information bit length may be determined and used to encode the MAC frame. Owing the reduced information bit length, the new coding scheme has a reduced coding rate, but maintains the same number of OFDM symbols as the default coding scheme.

摘要翻译： 根据所公开的方法和装置的一些实施例，提供了利用存在于PHY有效负载的符号焊盘中的额外有效载荷能力来降低FEC编码方案的编码率而不增加符号率或降低PHY速率的系统和方法 的相应数据传输。 如果使用默认编码方案对MAC帧进行编码而产生的符号衬垫长度将至少与默认编码方案的奇偶校验长度一样大，并且保持相同奇偶校验长度但具有减小的信息位的新编码方案 可以确定长度并用于对MAC帧进行编码。 由于减少的信息比特长度，新的编码方案具有降低的编码率，但是与默认编码方案保持相同数量的OFDM符号。

公开(公告)号：US20080123782A1

公开(公告)日：2008-05-29

申请号：US11521854

申请日：2006-09-15

申请人： Warm Shaw Yuan

发明人： Warm Shaw Yuan

IPC分类号： H04L1/00 ,  H04B1/10 ,  H03M13/03

CPC分类号： H04L1/0052 ,  H04L1/0047 ,  H04L25/061 ,  H04L25/067

摘要： A system and method are provided for maximum likelihood estimation in a channel receiving data with inter-symbol interference (ISI). The method receives a serial stream of digital information bits. Decisions are made concerning the received information bit values, which the method accepts as processed information, with soft decisions (SDs) and corresponding initial hard decisions (HDs). The method then identifies a sequence of processed information in a correction matrix, and uses the correction matrix to cross-reference the sequence to a HD look-up value. In response to accessing the HD look-up value, a modified HD is created. The modified HD is decoded, for example, by using forward error correction (FEC), creating a decoded HD. The method compares the decoded HD to the initial HD, and updates the correction matrix HD look-up value in response to the comparison.

摘要翻译： 提供了一种系统和方法，用于在具有符号间干扰（ISI）的数据接收的信道中进行最大似然估计。 该方法接收数字信息比特的串行流。 对于接收到的信息比特值，该方法是以软判决（SD）和相应的初始硬判决（HD）作为处理信息接受的决定。 然后，该方法在校正矩阵中识别处理的信息的序列，并且使用校正矩阵将该序列交叉参考到HD查找值。 响应于访问HD查找值，创建修改的HD。 修改的HD被解码，例如通过使用前向纠错（FEC），创建解码的HD。 该方法将解码的HD与初始HD进行比较，并响应于比较而更新校正矩阵HD查找值。

公开(公告)号：US07289530B1

公开(公告)日：2007-10-30

申请号：US10413167

申请日：2003-04-14

申请人： Warm Shaw Yuan ,  Daniel M. Castagnozzi ,  Alan Michael Sorgi ,  John Thomas Carr

发明人： Warm Shaw Yuan ,  Daniel M. Castagnozzi ,  Alan Michael Sorgi ,  John Thomas Carr

IPC分类号： H04J3/02 ,  H04J3/22 ,  H03M13/00

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。

公开(公告)号：US06747566B2

公开(公告)日：2004-06-08

申请号：US09802939

申请日：2001-03-12

申请人： Shaw-Yuan Hou

发明人： Shaw-Yuan Hou

IPC分类号： G08C1900

CPC分类号： G08C23/04 ,  G08C2201/31 ,  G08C2201/40 ,  G08C2201/92

摘要： A voice-activated remote control unit which is adapted for use with one or more electrical apparatuses, such as a TV set, a DVD player, a stereo system, an air conditioner, for the purpose of allowing the user to remotely turn on/off and control the operations of these electrical apparatuses through voice-activation. The voice-activated remote control unit comprises voice input means which can pick up the user/s natural voice command and converting it into an digital voice signal. A command code database is used for storing a predefined set of remote-control command codes and corresponding voice commands; and a voice recognition unit is used to perform a voice recognition algorithm on the digital voice signal to thereby recognize the user's voice command, and which is further capable of retrieving the corresponding remote-control command code from the command code database. Finally, a wireless signal emitter, such as infrared (IR) signal emitter is used to modulate the retrieved remote-control command code into an IR signal and emitting the IR signal to the electrical apparatuses to cause one or more of the electrical apparatuses to operate accordingly.

摘要翻译： 一种语音激活的遥控单元，其适于与诸如电视机，DVD播放器，立体声系统，空调机的一个或多个电气设备一起使用，以允许用户远程打开/关闭 并且通过语音激活来控制这些电气设备的操作。 语音激活的遥控单元包括语音输入装置，其可以拾取用户自然语音命令并将其转换为数字语音信号。 命令代码数据库用于存储预定义的一组遥控命令代码和相应的语音命令; 并且使用语音识别单元对数字语音信号执行语音识别算法，从而识别用户的语音命令，并且还能够从命令代码数据库中检索相应的遥控命令代码。 最后，使用诸如红外（IR）信号发射器的无线信号发射器将所检索的遥控命令码调制成IR信号并将IR信号发送到电气设备以使一个或多个电气设备操作 相应地。

公开(公告)号：US07649965B2

公开(公告)日：2010-01-19

申请号：US11521854

申请日：2006-09-15

申请人： Warm Shaw Yuan

发明人： Warm Shaw Yuan

IPC分类号： H04L27/06 ,  H03M13/00 ,  H03M13/03

CPC分类号： H04L1/0052 ,  H04L1/0047 ,  H04L25/061 ,  H04L25/067

摘要： A system and method are provided for maximum likelihood estimation in a channel receiving data with inter-symbol interference (ISI). The method receives a serial stream of digital information bits. Decisions are made concerning the received information bit values, which the method accepts as processed information, with soft decisions (SDs) and corresponding initial hard decisions (HDs). The method then identifies a sequence of processed information in a correction matrix, and uses the correction matrix to cross-reference the sequence to a HD look-up value. In response to accessing the HD look-up value, a modified HD is created. The modified HD is decoded, for example, by using forward error correction (FEC), creating a decoded HD. The method compares the decoded HD to the initial HD, and updates the correction matrix HD look-up value in response to the comparison.

摘要翻译： 提供了一种系统和方法，用于在具有符号间干扰（ISI）的数据接收的信道中进行最大似然估计。 该方法接收数字信息比特的串行流。 对于接收到的信息比特值，该方法是以软判决（SD）和相应的初始硬判决（HD）作为处理信息接受的决定。 然后，该方法在校正矩阵中识别处理的信息的序列，并且使用校正矩阵将该序列交叉参考到HD查找值。 响应于访问HD查找值，创建修改的HD。 修改的HD被解码，例如通过使用前向纠错（FEC），创建解码的HD。 该方法将解码的HD与初始HD进行比较，并响应于比较而更新校正矩阵HD查找值。

公开(公告)号：US07463695B2

公开(公告)日：2008-12-09

申请号：US11487732

申请日：2006-07-17

申请人： Warm Shaw Yuan ,  Daniel M. Castagnozzi ,  Keith Michael Conroy

发明人： Warm Shaw Yuan ,  Daniel M. Castagnozzi ,  Keith Michael Conroy

IPC分类号： H04L25/34 ,  H03M13/00

CPC分类号： H04L25/061 ,  H04L1/0047 ,  H04L25/4906 ,  H04L2025/03356

摘要： A system and method are provided for five-level non-causal channel equalization in a communications system. The method comprises: receiving a non-return to zero (NRZ) data stream input; establishing a five-level threshold; comparing the first bit estimate 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; and, in response to the comparisons, determining the value of the first bit. Establishing a five-level threshold includes: establishing thresholds to distinguish a first bit value when the second and third bit values are a “1” value, when the second bit value is a “1” and the third bit value is a “0”, when the second bit value is a “0” and the third bit value is a “1”, when the second and third bit values are a “0” value, and an approximate midway threshold.

摘要翻译： 在通信系统中提供用于五级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; 建立五级门槛; 将所述第一比特估计与所述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; 并且响应于比较，确定第一位的值。 建立五级阈值包括：当第二位值为“1”且第三位值为“0”时，建立阈值以区分第二位值和第三位值为“1”值时的第一位值， 当第二位值为“0”且第三位值为“1”时，当第二位值和第三位值为“0”值时，大致中途阈值。

公开(公告)号：US07065685B2

公开(公告)日：2006-06-20

申请号：US11116612

申请日：2005-04-29

申请人： Daniel M. Castagnozzi ,  Alan Michael Sorgi ,  Warm Shaw Yuan ,  Keith Michael Conroy

发明人： Daniel M. Castagnozzi ,  Alan Michael Sorgi ,  Warm Shaw Yuan ,  Keith Michael Conroy

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。

公开(公告)号：US06886127B2

公开(公告)日：2005-04-26

申请号：US09905568

申请日：2001-07-12

申请人： Warm Shaw Yuan

发明人： Warm Shaw Yuan

IPC分类号： H03M13/03 ,  H03M13/29 ,  H03M13/45 ,  H03M13/00

CPC分类号： H03M13/658 ,  H03M13/2975 ,  H03M13/2981 ,  H03M13/2984 ,  H03M13/3911 ,  H03M13/6577 ,  H03M13/6586

摘要： A method for computing the function log(ex1+ex2) or ln(ex1+ex2) for a first argument value x1 and a second argument value x2 includes generating a table having a first data field and a second data field. The first data field includes N entries of table index values selected from a range of |x1−x2| argument values and scaled by a scaling factor. The second data field includes N entries of computed table values computed based on the equation log(1+e−|x1−x2|) or ln (1+e−x1−x2|) for each of the |x1−x2| argument values selected for the table index values. The computed table values are also scaled by the same scaling factor.

摘要翻译： 一种用于计算功能对数的方法（e / SUB2> ）或ln（e） > > 2 ），第一参数值x 1和第二参数值x 2包括生成具有第一数据字段和 第二个数据字段。 第一数据字段包括从| x 1-x 2-x | 2的范围中选择的表索引值的N个条目。 参数值并按比例缩放。 第二数据字段包括基于等式log（1 + e - | x 或者ln（1 + e）-x 对于| x _{^{2 | > 1 -x 2 为表索引值选择的参数值。 计算的表值也按相同的缩放因子缩放。}}

公开(公告)号：US06868518B2

公开(公告)日：2005-03-15

申请号：US09905661

申请日：2001-07-12

申请人： Warm Shaw Yuan ,  Mingming Zhang ,  Handi Santosa

发明人： Warm Shaw Yuan ,  Mingming Zhang ,  Handi Santosa

IPC分类号： H03M13/29 ,  H03M13/45 ,  H03M13/00

CPC分类号： H03M13/3905 ,  H03M13/2975 ,  H03M13/2981 ,  H03M13/2984 ,  H03M13/3911 ,  H03M13/6577 ,  H03M13/658 ,  H03M13/6586

摘要： A method for performing a table look-up operation on a first table having N entries includes generating a second table having kN entries based on the first table. The method includes generating a first data field for the second table including table index values having a second interval derived from a first interval of the table index values of the first table and represented by an n-bit binary number; and generating a second data field including computed table values derived from the computed table values of the first table or computed based on the function defining the second data field. The method further includes computing an index value z, extracting address bits from the index value z, where the address bits are data bits more significant than the (n-1)th bit of the index value z, and addressing the second table using the address bits.

摘要翻译： 在具有N个条目的第一表上执行表查找操作的方法包括：基于第一表生成具有kN个条目的第二表。 该方法包括生成第二表的第一数据字段，其中包括具有从第一表的表索引值的第一间隔导出并由n位二进制数表示的第二间隔的表索引值; 以及生成第二数据字段，所述第二数据字段包括从所计算的所述第一表的表值导出的计算表值或基于定义所述第二数据字段的函数计算的表值。 该方法还包括计算索引值z，从索引值z提取地址比特，其中地址比特是比索引值z的第（n-1）比特更有意义的数据比特，并且使用 地址位。

公开(公告)号：US08443270B2

公开(公告)日：2013-05-14

申请号：US12331292

申请日：2008-12-09

申请人： Shaw Yuan ,  Arndt Mueller ,  Brian Eidson

发明人： Shaw Yuan ,  Arndt Mueller ,  Brian Eidson

IPC分类号： G06F11/00

CPC分类号： H04L1/0052 ,  H03M13/1105 ,  H03M13/116 ,  H03M13/3761 ,  H03M13/6561 ,  H04L1/005 ,  H04L1/0057 ,  H04L27/2647

摘要： A network controller receives data substantially simultaneously from multiple client nodes. The network controller assigns to each client node one or more sub-carriers of an orthogonal frequency-division multiplexing access frequency spectrum. The client nodes transmit substantially simultaneously M LDPC codewords that are encoded in a parity check matrix so that the number of rows m′ depend on the code rate and are mapped on its assigned sub-carriers. The network controller computes a bit log-likelihood ratio for each received bit of the codewords and arranges the bit LLR by codeword to align with an equivalent parity check matrix. The network controller decodes the codewords with the equivalent parity check matrix.

摘要翻译： 网络控制器从多个客户端节点基本上同时接收数据。 网络控制器向每个客户端节点分配正交频分复用接入频谱的一个或多个子载波。 客户端节点基本同时发送以奇偶校验矩阵编码的M个LDPC码字，使得行数m'取决于码率，并映射到其分配的子载波上。 网络控制器为码字的每个接收比特计算比特对数似然比，并通过码字排列比特LLR以与等效奇偶校验矩阵对准。 网络控制器用等效奇偶校验矩阵来解码码字。