专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

81. 发明授权

US07526687B2 Turbo code interleaver with near optimal performance 有权
公开(公告)号：US07526687B2
公开(公告)日：2009-04-28
申请号：US11051585
申请日：2005-03-30
申请人： Mustafa Eroz , A. Roger Hammons, Jr. , Feng-Wen Sun
发明人： Mustafa Eroz , A. Roger Hammons, Jr. , Feng-Wen Sun
IPC分类号： H03M13/27 , H03M13/29
CPC分类号： H03M13/271 , H03M13/2735 , H03M13/2746 , H03M13/276 , H03M13/2767 , H03M13/2771 , H03M13/2789 , H03M13/2957
摘要： A method of interleaving blocks of indexed data of varying length is disclosed. The method includes the steps of: providing a set of basic Interleavers comprising a family of one or more permutations of the indexed data and having a variable length; selecting one of the basic Interleavers based upon a desired Interleaver length L; and adapting the selected basic Interleaver to produce an Interleaver having the desired Interleaver length L.

82. 发明申请

US20080065948A1 Turbo code interleaver with optimal performance 有权
标题翻译：具有最佳性能的Turbo码交织器
公开(公告)号：US20080065948A1
公开(公告)日：2008-03-13
申请号：US11980917
申请日：2007-10-31
申请人： Mustafa Eroz , A. Hammons , Feng-Wen Sun
发明人： Mustafa Eroz , A. Hammons , Feng-Wen Sun
IPC分类号： G06F11/10 , H03M13/05
CPC分类号： H03M13/271 , H03M13/2735 , H03M13/2746 , H03M13/276 , H03M13/2767 , H03M13/2771 , H03M13/2789 , H03M13/2957
摘要： A method of interleaving blocks of indexed data of varying length is disclosed. The method includes the steps of: providing a set of basic Interleavers comprising a family of one or more permutations of the indexed data and having a variable length; selecting one of the basic Interleavers based upon a desired Interleaver length L; and adapting the selected basic Interleaver to produce an Interleaver having the desired Interleaver length L.
摘要翻译：公开了一种交织具有不同长度的索引数据块的方法。该方法包括以下步骤：提供一组基本交错器，其包括索引数据的一个或多个排列的族，并具有可变长度; 基于所需的交织器长度L选择基本交织器之一; 并且使所选择的基本交织器适配以产生具有期望的交织器长度L的交织器。

83. 发明授权

US08527833B2 Method and apparatus for a parameterized interleaver design process 有权
标题翻译：用于参数化交织器设计过程的方法和装置
公开(公告)号：US08527833B2
公开(公告)日：2013-09-03
申请号：US13231474
申请日：2011-09-13
申请人： Rohit Seshadri , Mustafa Eroz , Lin-Nan Lee
发明人： Rohit Seshadri , Mustafa Eroz , Lin-Nan Lee
IPC分类号： H03M13/00
CPC分类号： H03M13/2767 , H03M13/275 , H03M13/276 , H03M13/2789
摘要： A parameterized interleaver design process is provided, which optimizes the design for interleavers of any size, and can be completely specified using only a few design parameters. According to the parameterized interleaver design process an interleaver π(i) of a length N is generated. A number of subpermutation masks are defined, and a first intermediate interleaver permutation is partitioned into a number of subgroups, wherein the number of subgroups corresponds with the number of subpermutation masks. Each of the subgroups of the first intermediate interleaver permutation is partitioned into a number of further subgroups, and each of the subpermutation masks is applied to each of the further subgroups of a corresponding subgroup of the first intermediate interleaver permutation, resulting in a corresponding portion of a second intermediate interleaver permutation. The resulting interleaver π(i) is generated based at least in part on the first and second intermediate interleaver permutations.
摘要翻译：提供了一种参数化的交织器设计过程，其优化了任何尺寸的交织器的设计，并且可以仅使用少量设计参数来完全指定。根据参数化交织器设计处理，生成长度为N的交织器pi（i）。定义了多个子鉴别掩码，并且将第一中间交织器置换分割成多个子组，其中子组的数量对应于子鉴别掩码的数量。第一中间交织器排列的每个子组被划分成多个其他子组，并且每个子质量掩模被应用于第一中间交织器排列的相应子组的其他子组中的每一个，导致相应部分第二中间交织器排列。至少部分地基于第一和第二中间交织器排列来生成所产生的交织器pi（i）。

84. 发明授权

US08140946B2 Method and apparatus for generating low rate turbo codes 有权
标题翻译：用于产生低速率turbo码的方法和装置
公开(公告)号：US08140946B2
公开(公告)日：2012-03-20
申请号：US12017219
申请日：2008-01-21
申请人： Mustafa Eroz , Lin-Nan Lee
发明人： Mustafa Eroz , Lin-Nan Lee
IPC分类号： H03M13/03
CPC分类号： H03M13/2957 , H03M13/2903
摘要： An approach is provided for encoding information bits to output a coded signal using turbo code encoding with a low code rate.
摘要翻译：提供了一种用于对信息比特进行编码以使用低码率的turbo码编码输出编码信号的方法。

85. 发明申请

US20080082895A1 METHOD AND SYSTEM FOR GENERATING LOW DENSITY PARITY CHECK CODES 有权
标题翻译：用于产生低密度奇偶校验码的方法和系统
公开(公告)号：US20080082895A1
公开(公告)日：2008-04-03
申请号：US11938016
申请日：2007-11-09
申请人： Mustafa Eroz , Freng-Wei Sun , Lin-Nan Lee
发明人： Mustafa Eroz , Freng-Wei Sun , Lin-Nan Lee
IPC分类号： H03M13/00
CPC分类号： H04L27/186 , H03M13/1111 , H03M13/112 , H03M13/1137 , H03M13/1165 , H03M13/152 , H03M13/255 , H03M13/2906 , H03M13/356 , H03M13/6583 , H04H40/90 , H04L1/00 , H04L1/005 , H04L1/0057 , H04L1/006 , H04L1/0061 , H04L1/0065 , H04L1/007 , H04L1/0071 , H04L27/2053
摘要： An approach for generating a structured Low Density Parity Check (LDPC) codes is provided. Structure of the LDPC codes is provided by restricting a certain part of the parity check matrix to be lower triangular, hence enabling a very simple encoding method that does not require the generator matrix of the code. The approach can also exploit the unequal error protecting capability of LDPC codes on transmitted bits to provide extra error protection to more vulnerable bits of high order modulation constellations (such as 8-PSK (Phase Shift Keying)). Additionally, an efficient decoding scheme is described where both bit nodes and check nodes are partitioned into groups. The edge values associated with each of the group can be placed together in memory simultaneously for bit nodes groups and check nodes groups. This architecture allows the multiple edges to be fetched from memory at a single clock cycle. A method of designing the parity check matrix that ensures the fetching of all the adjacent edges for a group of bit nodes or check nodes in a few clock cycles is described. The above approach is particularly applicable to bandwidth constrained communication systems requiring high data rates.
摘要翻译：提供了一种用于生成结构化低密度奇偶校验（LDPC）码的方法。通过将奇偶校验矩阵的某一部分限制为三角形来提供LDPC码的结构，因此能够实现不需要代码的生成矩阵的非常简单的编码方法。该方法还可以利用LDPC码在传输比特上的不相等的差错保护能力，为高阶调制星座（如8-PSK（相移键控））的更脆弱的比特提供额外的错误保护。另外，描述了一种有效的解码方案，其中比特节点和校验节点都被划分成组。与组中的每个相关联的边缘值可以同时放置在存储器中用于位节点组和校验节点组。该架构允许在单个时钟周期内从存储器中获取多个边。描述了一种设计奇偶校验矩阵的方法，该矩阵确保在几个时钟周期内取出一组位节点或校验节点的所有相邻边缘。上述方法特别适用于需要高数据速率的带宽受限通信系统。

86. 发明授权

US08903012B2 Continuous phase modulation for satellite communications 有权
标题翻译：卫星通信连续相位调制
公开(公告)号：US08903012B2
公开(公告)日：2014-12-02
申请号：US12894358
申请日：2010-09-30
申请人： Rohit Seshadri , Mustafa Eroz , Lin-Nan Lee
发明人： Rohit Seshadri , Mustafa Eroz , Lin-Nan Lee
IPC分类号： H04L27/00 , H04L25/03 , H04L1/00 , H04L27/20
CPC分类号： H04L27/2003 , H04L1/0059 , H04L25/03834 , H04L25/0384
摘要： A new coded continuous phase modulation (CPM) scheme is proposed to enhance physical layer performance of the current DVB-RCS standard for a satellite communication system. The proposed CPM scheme uses a phase pulse design and combination of modulation parameters to shape the power spectrum of CPM signal in order to improve resilience to adjacent channel interference (ACI). Additionally, it uses a low complexity binary convolutional codes and S-random bit interleaving. Phase response using the proposed CPM scheme is a weighted average of the conventional rectangular and raised-cosine responses and provides optimum response to minimize frame error rate for a given data rate.
摘要翻译：提出了一种新的编码连续相位调制（CPM）方案来增强卫星通信系统当前DVB-RCS标准的物理层性能。所提出的CPM方案使用相位脉冲设计和调制参数的组合来形成CPM信号的功率谱，以便提高对相邻信道干扰（ACI）的抵御能力。另外，它使用低复杂度二进制卷积码和S随机比特交织。使用所提出的CPM方案的相位响应是常规矩形和上升余弦响应的加权平均值，并且为给定数据速率最小化帧错误率提供最佳响应。

87. 发明授权

US08674758B2 Method and apparatus for improved high order modulation 有权
标题翻译：用于改进高阶调制的方法和装置
公开(公告)号：US08674758B2
公开(公告)日：2014-03-18
申请号：US13327316
申请日：2011-12-15
申请人： Mustafa Eroz , Lin-Nan Lee
发明人： Mustafa Eroz , Lin-Nan Lee
IPC分类号： H04L27/36 , H03C1/00 , H03C3/00 , H03D1/00 , H03D3/00
CPC分类号： H04L27/34 , H04L1/004 , H04L1/0071 , H04L25/03312
摘要： Methods, systems and software are provided for high order signal modulation based on improved signal constellation and bit labeling designs for enhanced performance characteristics, including decreased power consumption. According to the improved signal constellation and bit labeling designs for enhanced performance characteristics, designs for 8-ary, 16-ary, 32-ary and 64-ary signal constellations are provided. According to an 8-ary constellation, improved bit labeling and bit coordinates are provided for a 1+7APSK signal constellation. According to a 16-ary constellation, improved bit labeling and bit coordinates are provided for a 6+10APSK signal constellation. According to three 32-ary constellations, improved bit labeling and bit coordinates are provided for a 16+16APSK signal constellation and two 4+12+16APSK signal constellations. According to two 64-ary constellations, improved bit labeling and bit coordinates are provided for an 8+16+20+20APSK signal constellation and a 12+16+16+20APSK signal constellation.
摘要翻译：提供了基于改进的信号星座图和位标签设计的用于高阶信号调制的方法，系统和软件，用于增强的性能特征，包括功耗降低。根据改进的信号星座和位标签设计，增强了性能特征，提供了8路，16路，32路和64路信号星座的设计。根据8位星座，为1 + 7APSK信号星座提供改进的比特标识和比特坐标。根据16位星座，为6 + 10APSK信号星座提供了改进的比特标识和比特坐标。根据三个32位星座，为16 + 16APSK信号星座和两个4 + 12 + 16APSK信号星座提供改进的比特标识和比特坐标。根据两个64进制星座，为8 + 16 + 20 + 20APSK信号星座和12 + 16 + 16 + 20A + +信号星座提供改进的比特标识和比特坐标。

88. 发明申请

US20140068375A1 SYSTEM AND METHOD FOR COMMUNICATING WITH LOW DENSITY PARITY CHECK CODES 有权
标题翻译：用于低密度奇偶校验码通信的系统和方法
公开(公告)号：US20140068375A1
公开(公告)日：2014-03-06
申请号：US13596846
申请日：2012-08-28
申请人： Mustafa Eroz , Lin-Nan Lee
发明人： Mustafa Eroz , Lin-Nan Lee
IPC分类号： H03M13/05 , G06F11/10
CPC分类号： H03M13/6393 , H03M13/005 , H03M13/1102 , H03M13/1105 , H03M13/1137 , H03M13/116 , H03M13/1165 , H03M13/255 , H03M13/618 , H03M13/6356 , H03M13/6362 , H03M13/6516 , H04L1/0057 , H04L1/0068
摘要： The present invention provides a low density parity check (LDPC) code system and method of using such a system. A transmitted LDPC code block size may be chosen such that the minimum transmitted block size is minimized. Further, the system provides for intermediate LDPC code block size support. Finally, a common decoder architecture may be used to decode different LDPC code rates and block sizes.
摘要翻译：本发明提供一种使用这种系统的低密度奇偶校验（LDPC）码系统和方法。可以选择传输的LDPC码块大小，使得最小传输块大小被最小化。此外，该系统提供中间LDPC码块大小支持。最后，可以使用公共解码器架构来解码不同的LDPC码率和块大小。

89. 发明申请

US20130154755A1 METHOD AND APPARATUS FOR IMPROVED HIGH ORDER MODULATION 有权
标题翻译：改进高阶调制的方法和装置
公开(公告)号：US20130154755A1
公开(公告)日：2013-06-20
申请号：US13327316
申请日：2011-12-15
申请人： Mustafa Eroz , Lin-Nan Lee
发明人： Mustafa Eroz , Lin-Nan Lee
IPC分类号： H03C3/00 , H03D3/00
CPC分类号： H04L27/34 , H04L1/004 , H04L1/0071 , H04L25/03312
摘要： Methods, systems and software are provided for high order signal modulation based on improved signal constellation and bit labeling designs for enhanced performance characteristics, including decreased power consumption. According to the improved signal constellation and bit labeling designs for enhanced performance characteristics, designs for 8-ary, 16-ary, 32-ary and 64-ary signal constellations are provided. According to an 8-ary constellation, improved bit labeling and bit coordinates are provided for a 1+7APSK signal constellation. According to a 16-ary constellation, improved bit labeling and bit coordinates are provided for a 6+10APSK signal constellation. According to three 32-ary constellations, improved bit labeling and bit coordinates are provided for a 16+16APSK signal constellation and two 4+12+16APSK signal constellations. According to two 64-ary constellations, improved bit labeling and bit coordinates are provided for an 8+16+20+20APSK signal constellation and a 12+16+16+20APSK signal constellation.
摘要翻译：提供了基于改进的信号星座图和位标签设计的用于高阶信号调制的方法，系统和软件，用于增强的性能特征，包括功耗降低。根据改进的信号星座和位标签设计，增强了性能特征，提供了8路，16路，32路和64路信号星座的设计。根据8位星座，为1 + 7APSK信号星座提供改进的比特标识和比特坐标。根据16位星座，为6 + 10APSK信号星座提供了改进的比特标识和比特坐标。根据三个32位星座，为16 + 16APSK信号星座和两个4 + 12 + 16APSK信号星座提供改进的比特标识和比特坐标。根据两个64进制星座，为8 + 16 + 20 + 20APSK信号星座和12 + 16 + 16 + 20A + +信号星座提供了改进的比特标识和比特坐标。

90. 发明授权

US08170502B2 Phase pulse system and method for bandwidth and energy efficient continuous phase modulation 有权
标题翻译：相脉冲系统及带宽与能量效率连续相位调制方法
公开(公告)号：US08170502B2
公开(公告)日：2012-05-01
申请号：US12894380
申请日：2010-09-30
申请人： Rohit Seshadri , Bassel F. Beidas , Mustafa Eroz , Lin-Nan Lee
发明人： Rohit Seshadri , Bassel F. Beidas , Mustafa Eroz , Lin-Nan Lee
IPC分类号： H04B1/02
CPC分类号： H04L25/0384 , H04L1/0059 , H04L25/03834 , H04L27/2003
摘要： A new pulse shape for CPM is introduced which is obtained by a linear combination of well-known RC and REC pulse shapes. The new pulse shape addresses the tradeoff between the width of the PSD main lobe and the rate of decay of the side lobe to improve the coded performance of multi-carrier systems affected by ACI. Also, a methodology is proposed to design and evaluate the performance of the new pulse shape for multi-carrier, coded systems based on the modulation constrained capacity. Furthermore, a binary convolutional code and the CPM modulator are concatenated using an S-random bit interleaver to lower the error floor. Finally, Laurent representation of the new pulse shape is suggested such that by retaining only the principal pulses at the receiver, complexity of the receiver can be reduced.
摘要翻译：引入了用于CPM的新的脉冲形状，其通过公知的RC和REC脉冲形状的线性组合获得。新的脉冲形状解决了PSD主波瓣的宽度与旁瓣衰减速率之间的折衷，以提高受ACI影响的多载波系统的编码性能。此外，提出了一种基于调制约束能力的方法来设计和评估用于多载波编码系统的新脉冲形状的性能。此外，使用S随机比特交织器将二进制卷积码和CPM调制器级联以降低错误楼层。最后，提出了新的脉冲形状的Laurent表示，使得通过仅保留接收器处的主脉冲，可以减少接收机的复杂性。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式