公开(公告)号：US20070162814A1

公开(公告)日：2007-07-12

申请号：US11417316

申请日：2006-05-03

申请人： Ba-Zhong Shen ,  Tak Lee ,  Kelly Cameron

发明人： Ba-Zhong Shen ,  Tak Lee ,  Kelly Cameron

IPC分类号： H03M13/00

CPC分类号： H03M13/116 ,  H03M13/1185 ,  H03M13/1188 ,  H03M13/618 ,  H03M13/6362

摘要： LDPC (Low Density Parity Check) code size adjustment by shortening and puncturing. A variety of LDPC coded signals may be generated from an initial LDPC code using selected shortening and puncturing. Using LDPC code size adjustment approach, a single communication device whose hardware design is capable of processing the original LDPC code is also capable to process the various other LDPC codes constructed from the original LDPC code after undergoing appropriate shortening and puncturing. This provides significant design simplification and reduction in complexity because the same hardware can be implemented to accommodate the various LDPC codes generated from the original LDPC code. Therefore, a multi-LDPC code capable communication device can be implemented that is capable to process several of the generated LDPC codes. This approach allows for great flexibility in the LDPC code design, in that, the original code rate can be maintained after performing the shortening and puncturing.

摘要翻译： LDPC（低密度奇偶校验）码字大小调整通过缩短和删截。 可以使用选择的缩短和删截从初始LDPC码生成各种LDPC编码信号。 使用LDPC码大小调整方法，硬件设计能够处理原始LDPC码的单个通信设备也能够在进行适当的缩短和删截之后处理由原始LDPC码构成的各种其他LDPC码。 这提供了重要的设计简化和复杂性的降低，因为可以实现相同的硬件以适应从原始LDPC码产生的各种LDPC码。 因此，可以实现能够处理几个所生成的LDPC码的具有多LDPC码的通信装置。 这种方法允许在LDPC码设计中具有极大的灵活性，因为可以在执行缩短和删截之后维持原始码率。

公开(公告)号：US20070127387A1

公开(公告)日：2007-06-07

申请号：US11323901

申请日：2005-12-30

申请人： Tak Lee ,  Hau Tran ,  Ba-Zhong Shen ,  Kelly Cameron

发明人： Tak Lee ,  Hau Tran ,  Ba-Zhong Shen ,  Kelly Cameron

IPC分类号： H04J1/16

CPC分类号： H04L1/0052 ,  H03M13/1111 ,  H03M13/1137 ,  H03M13/114 ,  H03M13/255 ,  H03M13/27 ,  H04L1/0057

摘要： Partial-parallel implementation of LDPC (Low Density Parity Check) decoder. A novel approach is presented by which a selected number of cycles is performed during each of bit node processing and check node processing when performing error correction decoding of an LDPC coded signal. The number of cycles of each of bit node processing and check node processing need not be the same. At least one functional block, component, portion of hardware, or calculation can be used during both of the bit node processing and check node processing thereby conserving space with an efficient use of processing resources. At a minimum, a semi-parallel approach can be performed where 2 cycles are performed during each of bit node processing and check node processing. Alternatively, more than 2 cycles can be performed for each of bit node processing and check node processing.

摘要翻译： LDPC（低密度奇偶校验）解码器的部分并行实现。 提出了一种新颖的方法，通过该方法在对LDPC编码信号执行纠错解码时，在每个位节点处理和校验节点处理期间执行所选择的周期数。 每个位节点处理和校验节点处理的周期数不必相同。 可以在比特节点处理和校验节点处理两者期间使用至少一个功能块，组件，硬件部分或计算，从而通过有效利用处理资源来节省空间。 至少可以执行在每个位节点处理和校验节点处理期间执行2个周期的半并行方法。 或者，可以对比特节点处理和校验节点处理中的每一个执行多于2个周期。

公开(公告)号：US20070033497A1

公开(公告)日：2007-02-08

申请号：US11472256

申请日：2006-06-21

申请人： Ba-Zhong Shen ,  Tak Lee ,  Kelly Cameron ,  Hau Tran

发明人： Ba-Zhong Shen ,  Tak Lee ,  Kelly Cameron ,  Hau Tran

IPC分类号： H03M13/00

CPC分类号： H03M13/116 ,  H03M13/1151 ,  H03M13/1177 ,  H03M13/1515

摘要： Efficient construction of LDPC (Low Density Parity Check) codes with corresponding parity check matrix having CSI (Cyclic Shifted Identity) sub-matrices. These constructed LDPC codes can be implemented in multiple-input-multiple-output (MIMO) communication systems. One LDPC code construction approach uses CSI sub-matrix shift values whose shift values are checked instead of non-zero element positions within the parity check matrix (or its corresponding sub-matrices). When designing an LDPC code, this approach is efficient to find and avoid cycles (or loops) in the LDPC code's corresponding bipartite graph. Another approach involves GRS (Generalized Reed-Solomon) code based LDPC code construction. These LDPC codes can be implemented in a wide variety of communication devices, including those implemented in wireless communication systems that comply with the recommendation practices and standards being developed by the IEEE 802.11n Task Group (i.e., the Task Group that is working to develop a standard for 802.11 TGn (High Throughput)).

公开(公告)号：US20070033480A1

公开(公告)日：2007-02-08

申请号：US11472226

申请日：2006-06-21

申请人： Tak Lee ,  Ba-Zhong Shen ,  Kelly Cameron ,  Hau Tran

发明人： Tak Lee ,  Ba-Zhong Shen ,  Kelly Cameron ,  Hau Tran

IPC分类号： H03M13/00

CPC分类号： H03M13/11

摘要： Efficient construction of LDPC (Low Density Parity Check) codes with corresponding parity check matrix having CSI (Cyclic Shifted Identity) sub-matrices. These constructed LDPC codes can be implemented in multiple-input-multiple-output (MIMO) communication systems. One LDPC code construction approach uses CSI sub-matrix shift values whose shift values are checked instead of non-zero element positions within the parity check matrix (or its corresponding sub-matrices). When designing an LDPC code, this approach is efficient to find and avoid cycles (or loops) in the LDPC code's corresponding bipartite graph. Another approach involves GRS (Generalized Reed-Solomon) code based LDPC code construction. These LDPC codes can be implemented in a wide variety of communication devices, including those implemented in wireless communication systems that comply with the recommendation practices and standards being developed by the IEEE 802.11n Task Group (i.e., the Task Group that is working to develop a standard for 802.11 TGn (High Throughput)).

摘要翻译： 具有具有CSI（循环移位身份）子矩阵的相应奇偶校验矩阵的LDPC（低密度奇偶校验）码的高效构造。 这些构造的LDPC码可以在多输入多输出（MIMO）通信系统中实现。 一种LDPC码构造方法使用CSI子矩阵移位值，其移位值被检查，而不是奇偶校验矩阵（或其对应的子矩阵）内的非零元素位置。 当设计LDPC码时，该方法在LDPC码的相应二分图中找到并避免周期（或循环）是有效的。 另一种方法涉及基于GRS（Generalized Reed-Solomon）代码的LDPC码构造。 这些LDPC码可以在各种各样的通信设备中实现，包括在符合由IEEE 802.11n任务组（即正在努力开发的任务组）的建议实践和标准的无线通信系统中实现的通信设备 802.11 TGn（高吞吐量）标准）。

公开(公告)号：US20060156168A1

公开(公告)日：2006-07-13

申请号：US11264997

申请日：2005-11-02

申请人： Ba-Zhong Shen ,  Kelly Cameron ,  Tak Lee ,  Hau Tran

发明人： Ba-Zhong Shen ,  Kelly Cameron ,  Tak Lee ,  Hau Tran

IPC分类号： H03M13/00

CPC分类号： H03M13/116 ,  H03M13/1148 ,  H03M13/255 ,  H03M13/6362

摘要： Construction of Irregular LDPC (Low Density Parity Check) codes using RS (Reed-Solomon) codes or GRS (Generalized Reed-Solomon) codes. A novel approach is presented by which a wide variety of irregular LDPC codes may be generated using GRS or RS codes. These irregular LDPC codes can provide better overall performance than regular LDPC codes in terms of providing for lower BER (Bit Error Rate) as a function of SNR (Signal to Noise Ratio). Such an irregular LDPC code may be appropriately designed using these principles thereby generating a code that is suitable for use in wireless communication systems including those that comply with the recommendation practices and standards being developed by the IEEE (Institute of Electrical & Electronics Engineers) 802.11n Task Group (i.e., the Task Group that is working to develop a standard for 802.11 TGn (High Throughput)).

摘要翻译： 使用RS（里德 - 所罗门）代码或GRS（广义里德 - 所罗门）代码构建不规则LDPC（低密度奇偶校验）码。 提出了一种新颖的方法，通过该方法可以使用GRS或RS代码生成各种不规则LDPC码。 在提供作为SNR（信噪比）的函数的较低BER（误码率）方面，这些不规则LDPC码可以提供比常规LDPC码更好的总体性能。 可以使用这些原理来适当地设计这样的不规则LDPC码，从而生成适合于无线通信系统中使用的代码，包括符合IEEE（Institute of Electrical＆Electronics Engineers）802.11n的建议实践和标准的代码 任务组（即正在努力制定802.11 TGn（高吞吐量）标准的任务组）。

公开(公告)号：US20070157062A1

公开(公告)日：2007-07-05

申请号：US11360268

申请日：2006-02-23

申请人： Tak Lee ,  Hau Tran ,  Ba-Zhong Shen ,  Kelly Cameron

发明人： Tak Lee ,  Hau Tran ,  Ba-Zhong Shen ,  Kelly Cameron

IPC分类号： H03M13/00

CPC分类号： H03M13/116 ,  H03M13/1137 ,  H03M13/255 ,  H03M13/27 ,  H03M13/6362 ,  H03M13/6566

摘要： Implementation of LDPC (Low Density Parity Check) decoder by sweeping through sub-matrices. A novel approach is presented by which an LDPC coded signal is decoded processing the columns and rows of the individual sub-matrices of the low density parity check matrix corresponding to the LDPC code. The low density parity check matrix can partitioned into rows and columns according to each of the sub-matrices of it, and each of those sub-matrices also includes corresponding rows and columns. For example, when performing bit node processing, the same columns of at 1 or more sub-matrices can be processed together (e.g., all 1st columns in 1 or more sub-matrices, all 2nd columns in 1 or more sub-matrices, etc.). Analogously, when performing check node processing, the same rows of 1 or more sub-matrices can be processed together (e.g., all 1st rows in 1 or more sub-matrices, all 2nd rows in 1 or more sub-matrices, etc.).

摘要翻译： 通过扫描子矩阵实现LDPC（低密度奇偶校验）解码器。 提出了一种解码处理与LDPC码对应的低密度奇偶校验矩阵的各个子矩阵的列和行的LDPC编码信号的新方法。 低密度奇偶校验矩阵可以根据它的每个子矩阵划分成行和列，并且这些子矩阵中的每一个也包括相应的行和列。 例如，当执行位节点处理时，可以一起处理1个或更多个子矩阵的相同列（例如，1个或更多个子矩阵中的所有1个SUP列，全部2个SUP 1个或更多个子矩阵中的 / nd>列等）。 类似地，当执行校验节点处理时，可以一起处理1个或更多个子矩阵的相同行（例如，1个或更多个子矩阵中的所有1 ^{行，全部2个 1个或多个子矩阵中的行等）。}

公开(公告)号：US20070157061A1

公开(公告)日：2007-07-05

申请号：US11360267

申请日：2006-02-23

申请人： Tak Lee ,  Hau Tran ,  Ba-Zhong Shen ,  Kelly Cameron

发明人： Tak Lee ,  Hau Tran ,  Ba-Zhong Shen ,  Kelly Cameron

IPC分类号： H03M13/00

CPC分类号： H03M13/116 ,  H03M13/1137 ,  H03M13/255 ,  H03M13/27 ,  H03M13/6362 ,  H03M13/6566

摘要： Sub-matrix-based implementation of LDPC (Low Density Parity Check) decoder. A novel approach is presented by which an LDPC coded signal is decoded by processing 1 sub-matrix at a time. A low density parity check matrix corresponding to the LDPC code includes rows and columns of sub-matrices. For example, when performing bit node processing, 1 or more sub-matrices in a column are processed; when performing check node processing, 1 or more sub-matrices in a row are processed. If desired, when performing bit node processing, the sub-matrices in each column are successively processed together (e.g., all column 1 sub-matrices, all column 2 sub-matrices, etc.). Analogously, when performing check node processing, the sub-matrices in each row can be successively processed together (e.g., all row 1 sub-matrices, all row 2 sub-matrices in row 2, etc.).

摘要翻译： LDPC（低密度奇偶校验）解码器的基于子矩阵的实现。 提出了一种新颖的方法，通过该方法通过一次处理1个子矩阵对LDPC编码信号进行解码。 对应于LDPC码的低密度奇偶校验矩阵包括子矩阵的行和列。 例如，当执行位节点处理时，处理列中的一个或多个子矩阵; 当执行校验节点处理时，处理一行中的一个或多个子矩阵。 如果需要，当执行位节点处理时，每列中的子矩阵被连续处理（例如，所有列1个子矩阵，全部2个子矩阵等）。 类似地，当执行校验节点处理时，可以一起连续地处理每行中的子矩阵（例如，所有行1子矩阵，行2中的所有行2子矩阵等）。

公开(公告)号：US20060156169A1

公开(公告)日：2006-07-13

申请号：US11264998

申请日：2005-11-02

申请人： Ba-Zhong Shen ,  Christopher Hansen ,  Joseph Lauer ,  Kelly Cameron ,  Tak Lee ,  Hau Tran

发明人： Ba-Zhong Shen ,  Christopher Hansen ,  Joseph Lauer ,  Kelly Cameron ,  Tak Lee ,  Hau Tran

IPC分类号： H03M13/00

CPC分类号： H04L27/2626 ,  H03M13/1148 ,  H03M13/116 ,  H03M13/255 ,  H03M13/6362 ,  H04B7/0617 ,  H04L1/0057 ,  H04L1/0071 ,  H04L5/0023 ,  H04L27/2647 ,  H04L27/34

摘要： LDPC (Low Density Parity Check) coding and interleaving implemented in multiple-input-multiple-output (MIMO) communication systems. Initially, a novel approach is presented by which a wide variety of irregular LDPC codes may be generated using GRS or RS codes. These irregular LDPC codes can provide better overall performance than regular LDPC codes in terms of providing for lower BER (Bit Error Rate) as a function of SNR (Signal to Noise Ratio). A variety of communication device types are also presented that may employ the error correcting coding using a GRS-based irregular LDPC code, along with appropriately selected interleaving, to provide for even better performance. These communication devices may be implemented to in wireless communication systems including those that comply with the recommendation practices and standards being developed by the IEEE 802.11n Task Group (i.e., the Task Group that is working to develop a standard for 802.11 TGn (High Throughput)).

摘要翻译： 在多输入多输出（MIMO）通信系统中实现的LDPC（低密度奇偶校验）编码和交织。 最初，提出了一种新颖的方法，通过该方法可以使用GRS或RS代码生成各种不规则的LDPC码。 在提供作为SNR（信噪比）的函数的较低BER（误码率）方面，这些不规则LDPC码可以提供比常规LDPC码更好的总体性能。 还提出了各种通信设备类型，其可以采用基于GRS的不规则LDPC码的纠错编码以及适当选择的交织，以提供更好的性能。 这些通信设备可以被实现在无线通信系统中，包括符合由IEEE 802.11n任务组（即，正在努力制定802.11Gn（高吞吐量）的标准的任务组）开发的推荐做法和标准的通信系统， ）。

公开(公告)号：US08058982B2

公开(公告)日：2011-11-15

申请号：US12202162

申请日：2008-08-29

申请人： Paul S. Crowe ,  Myra Ma ,  Shawn Brewer ,  John W. Espinosa ,  Tak Lee ,  Derek S. Sancer

发明人： Paul S. Crowe ,  Myra Ma ,  Shawn Brewer ,  John W. Espinosa ,  Tak Lee ,  Derek S. Sancer

IPC分类号： B60Q1/00 ,  G09F9/00 ,  G05D3/00 ,  G06F7/00 ,  G06G7/70

CPC分类号： B60W20/00 ,  B60K6/48 ,  B60K35/00 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/441 ,  B60L2240/486 ,  B60L2250/16 ,  B60W10/06 ,  B60W10/08 ,  B60W2050/048 ,  B60W2510/0604 ,  B60W2510/0638 ,  B60W2510/081 ,  B60W2510/1015 ,  B60W2510/104 ,  B60W2510/244 ,  B60W2540/06 ,  B60W2540/10 ,  B60W2540/12 ,  B60W2710/0666 ,  B60W2710/083 ,  B60Y2200/90 ,  Y02T10/6221 ,  Y02T10/6286 ,  Y02T10/642 ,  Y02T10/84

摘要： Information display systems capable of iconically representing the components of a hybrid powertrain and method thereof. In operation, the information display systems indicate the specific powertrain components in the hybrid system that are active in various hybrid operational modes (e.g., electric launch, blended torque, etc.). In particular, active components are highlighted (i.e., increased intensity) by the display and non-active components are faded (i.e., decreased intensity). In one embodiment, the vehicle wheels are depicted with a static intensity in-between that of the active components and the non-active components. This allows the vehicle operator to clearly see which components are active during each hybrid system mode, and to gain a simplified picture of hybrid system behavior during normal operation at a glance.

摘要翻译： 能够以图形方式表示混合动力总成的部件的信息显示系统及其方法。 在操作中，信息显示系统指示混合系统中在各种混合操作模式（例如，电动发射，混合扭矩等）中有效的特定动力系分量。 特别地，有源组件被显示器突出显示（即，增强的强度），而非有源组件被褪色（即强度降低）。 在一个实施例中，车轮被描绘成具有在活动部件和非活动部件之间的静态强度。 这允许车辆操作者在每个混合系统模式期间清楚地看到哪些部件是活动的，并且在正常操作期间一目了然地获得混合系统行为的简化图。

公开(公告)号：USD647832S1

公开(公告)日：2011-11-01

申请号：US29388490

申请日：2011-03-29

申请人： Dimitri T. Medina ,  Tak Lee ,  Scott M. Conway ,  Derek Sancer ,  Chris I. Ito ,  Aaron M. Elliott ,  Bryan W. Delashaw

设计人： Dimitri T. Medina ,  Tak Lee ,  Scott M. Conway ,  Derek Sancer ,  Chris I. Ito ,  Aaron M. Elliott ,  Bryan W. Delashaw