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1. 发明授权

US07079592B2 Complementary code keying demodulation system 失效
标题翻译：互补码密钥解调系统
公开(公告)号：US07079592B2
公开(公告)日：2006-07-18
申请号：US10170451
申请日：2002-06-14
申请人： Cheng-Yuan Chang , Jie-Hau Huang , Hong-Chin Lin , Guu-Chang Yang , Yung-Hsien Chang , Hsuan-Ching Chao
发明人： Cheng-Yuan Chang , Jie-Hau Huang , Hong-Chin Lin , Guu-Chang Yang , Yung-Hsien Chang , Hsuan-Ching Chao
IPC分类号： H04L27/22 , H04L27/06 , H04J11/00
CPC分类号： H04L23/02
摘要： The present invention relates to both of a bi-stage correlation calculation demodulation system, and a fast walsh block demodulation device at a receiver, wherein the bi-stage correlation calculation demodulation system has a characteristic of bi-stage correlation calculation in which the subsequent second-stage correlation calculations are dependent on the first-stage correlation calculation results by utilizing an incomplete orthogonal property within CCK codewords to arrange the CCK codewords operated in the first-stage correlation calculations and second-stage correlation calculations properly and respectively. The fast walsh block demodulation device comprises: a plurality of adders (operators) constructed to be a first-level correlation calculation circuit and a second-level correlation calculation circuit, and a plurality of process modules constructed to be a third-level correlation calculation circuit, the process modules having the functions of picking one maximum value from four values and performing third-level correlation calculation of conventional basic fast walsh block demodulation device.
摘要翻译：本发明涉及一种在接收机处的双级相关计算解调系统和快速沃尔什块解调装置，其中双级相关计算解调系统具有双级相关计算的特征，其中随后的第二阶段相关计算依赖于第一阶段相关计算结果，通过利用CCK码字中的不完全正交特性来分别排列在第一阶段相关计算中运行的CCK码字和二阶相关计算。快速沃尔什块解调装置包括：构成为第一级相关计算电路和第二级相关计算电路的多个加法器（运算符），以及构成为第三级相关计算电路的多个处理模块该处理模块具有从四个值中选出一个最大值并执行常规基本快速沃尔什块解调装置的第三级相关计算的功能。

2. 发明授权

US07894792B2 Multicarrier and multirate CDMA system 有权
标题翻译：多载波和多速率CDMA系统
公开(公告)号：US07894792B2
公开(公告)日：2011-02-22
申请号：US12068775
申请日：2008-02-12
申请人： Guu-Chang Yang
发明人： Guu-Chang Yang
IPC分类号： H04B1/16
CPC分类号： H04L5/0021 , H04J13/10
摘要： In a multi-carrier and multi-rate CDMA system, a base station transmits an index tag to a number of mobile stations. The index tag has a length indicating a transmission rate and all index tags are nodes in a code tree. In the code tree, mother nodes and their child nodes block each other and are not assigned to the mobile stations at the same time. At the same time, index tags of nodes in the same level of the code tree map are orthogonal to each other. The mobile station constructs an index tag matrix according to the index tag. Then, the index tag matrix is multiplied with a generating matrix that is stored in every mobile station to generate a spreading factor matrix whose rows respectively correspond to different carriers.
摘要翻译：在多载波和多速率CDMA系统中，基站向多个移动台发送索引标签。索引标签具有指示传输速率的长度，并且所有索引标签是代码树中的节点。在代码树中，母节点及其子节点相互阻塞，并不同时分配给移动台。同时，代码树图中相同级别的节点的索引标签彼此正交。移动台根据索引标签构建索引标签矩阵。然后，将索引标签矩阵乘以存储在每个移动站中的生成矩阵，以生成其行分别对应于不同载波的扩频因子矩阵。

3. 发明申请

US20080198812A1 Multicarrier and multirate CDMA system 有权
标题翻译：多载波和多速率CDMA系统
公开(公告)号：US20080198812A1
公开(公告)日：2008-08-21
申请号：US12068775
申请日：2008-02-12
申请人： Guu-Chang Yang
发明人： Guu-Chang Yang
IPC分类号： H04B7/216
CPC分类号： H04L5/0021 , H04J13/10
摘要： In a multi-carrier and multi-rate CDMA system, a base station transmits an index tag to a number of mobile stations. The index tag has a length indicating a transmission rate and all index tags are nodes in a code tree. In the code tree, mother nodes and their child nodes block each other and are not assigned to the mobile stations at the same time. At the same time, index tags of nodes in the same level of the code tree map are orthogonal to each other. The mobile station constructs an index tag matrix according to the index tag. Then, the index tag matrix is multiplied with a generating matrix that is stored in every mobile station to generate a spreading factor matrix whose rows respectively correspond to different carriers.
摘要翻译：在多载波和多速率CDMA系统中，基站向多个移动台发送索引标签。索引标签具有指示传输速率的长度，并且所有索引标签是代码树中的节点。在代码树中，母节点及其子节点相互阻塞，并不同时分配给移动台。同时，代码树图中相同级别的节点的索引标签彼此正交。移动台根据索引标签构建索引标签矩阵。然后，索引标签矩阵与存储在每个移动站中的生成矩阵相乘以产生其行分别对应于不同载波的扩频因子矩阵。

4. 发明授权

US07197007B2 Method for generating 2D OVSF codes in multicarrier DS-CDMA systems 有权
标题翻译：用于在多载波DS-CDMA系统中生成2D OVSF码的方法
公开(公告)号：US07197007B2
公开(公告)日：2007-03-27
申请号：US10063771
申请日：2002-05-11
申请人： Guu-Chang Yang , Chia-Ming Yang , Pei-Hsuan Lin
发明人： Guu-Chang Yang , Chia-Ming Yang , Pei-Hsuan Lin
IPC分类号： H04J11/00
CPC分类号： H04J13/0044 , H04J13/12 , H04L5/026
摘要： A code tree of two-dimensional orthogonal variable spreading factor (2D-OVSF) code matrices for a multicarrier direct-sequence code-division multiple-access (MC-DS/CDMA) communications system is generated by providing two sets of 2×2 orthogonal matrices {A(1)(2×2), A(2)(2×2)} and {B(1)(2×2), B(2)(2×2)}. The first set of 2×2 matrices is used to generate a pair of sibling nodes in the code tree that respectively represent matrices A(1)(2×2α) and A(2)(2×2α) by iterating the relationship: A(1)(2×21+β)=[A(1)(2×2β)A(2)(2×2β)], The matrices A(1)(2×2α) and A(2)(2×2α) are A(2)(2×21+β)=[A(1)(2×2β)−A(2)(2×2β)]. used to generate a child node of one of the sibling nodes. The child node contains an M×N matrix, which is found by iterating the relationship: A(i−1)(O×P)=[B(1)(2×2){circle around (×)}A(i/2)(0/2×P/2)] where {circle around (×)} indicates a Kronecker product. A(i)(O×P)=[B(2)(2×2){circle around (×)}A(i/2)(0/2×P/2)],
摘要翻译：通过提供两组2x2正交矩阵来生成用于多载波直接序列码分多址（MC-DS / CDMA）通信系统的二维正交可变扩频因子（2D-OVSF）码矩阵的码树（2）/（2×2），（2×2），和（B）（1）（2x2），（2）（2x2）}。第一组2x2矩阵用于在代码树中产生一对分别表示矩阵A 1（2）和（2）的兄弟节点＆lt; / SUP2＆gt;＆lt; / SUB＆gt;＆lt; / SUP＆gt;＆lt; / SUP＆gt;（2） SUB> _）

5. 发明申请

US20050157686A1 Multicarrier and multirate CDMA system 失效
标题翻译：多载波和多速率CDMA系统
公开(公告)号：US20050157686A1
公开(公告)日：2005-07-21
申请号：US10859136
申请日：2004-06-03
申请人： Guu-Chang Yang
发明人： Guu-Chang Yang
IPC分类号： H04B7/216 , H04J11/00
CPC分类号： H04L5/0021 , H04J13/10
摘要： In a multi-carrier and multi-rate CDMA system, a base station transmits an index tag to a number of mobile stations. The index tag has a length indicating a transmission rate and all index tags are nodes in a code tree. In the code tree, mother nodes and their child nodes block each other and are not assigned to the mobile stations at the same time. At the same time, index tags of nodes in the same level of the code tree map are orthogonal to each other. The mobile station constructs an index tag matrix according to the index tag. Then, the index tag matrix is multiplied with a generating matrix that is stored in every mobile station to generate a spreading factor matrix whose rows respectively correspond to different carriers.
摘要翻译：在多载波和多速率CDMA系统中，基站向多个移动台发送索引标签。索引标签具有指示传输速率的长度，并且所有索引标签是代码树中的节点。在代码树中，母节点及其子节点相互阻塞，并不同时分配给移动台。同时，代码树图中相同级别的节点的索引标签彼此正交。移动台根据索引标签构建索引标签矩阵。然后，索引标签矩阵与存储在每个移动站中的生成矩阵相乘以产生其行分别对应于不同载波的扩频因子矩阵。

6. 发明授权

US07450491B2 Multicarrier and multirate CDMA system 失效
公开(公告)号：US07450491B2
公开(公告)日：2008-11-11
申请号：US10859136
申请日：2004-06-03
申请人： Guu-Chang Yang
发明人： Guu-Chang Yang
IPC分类号： H04J11/00
CPC分类号： H04L5/0021 , H04J13/10
摘要： In a multi-carrier and multi-rate CDMA system, a base station transmits an index tag to a number of mobile stations. The index tag has a length indicating a transmission rate and all index tags are nodes in a code tree. In the code tree, mother nodes and their child nodes block each other and are not assigned to the mobile stations at the same time. At the same time, index tags of nodes in the same level of the code tree map are orthogonal to each other. The mobile station constructs an index tag matrix according to the index tag. Then, the index tag matrix is multiplied with a generating matrix that is stored in every mobile station to generate a spreading factor matrix whose rows respectively correspond to different carriers.

7. 发明授权

US07346038B2 Method for generating 2D OVSF codes in multicarrier DS-CDMA systems 失效
公开(公告)号：US07346038B2
公开(公告)日：2008-03-18
申请号：US10406359
申请日：2003-04-04
申请人： Guu-Chang Yang , Chia-Ming Yang , Pei-Hsuan Lin
发明人： Guu-Chang Yang , Chia-Ming Yang , Pei-Hsuan Lin
IPC分类号： H04B7/216
CPC分类号： H04L5/026 , H04J13/0044 , H04J13/12
摘要： A multicarrier direct-sequence code-division multiple-access (MC-DS/CDMA) communications system is provided. A code tree of two-dimensional orthogonal variable spreading factor (2D-OVSF) codes is then generated for the system. To generate the code tree, a set of existing M1×N1 2D-OVSF matrices, in the form of A(i)(M1×N1) for i={1, 2, . . . , K1} is selected as seed matrices. M1 represents the number of available frequency carriers in the MC-DS/CDMA system, and N1 represents a spreading factor code length. Another set of existing M2×N2 2D-OVSF matrices, in the form of B2(i)(M2×N2) for i={1, 2, . . . , K2} is then selected as mapping matrices. The mapping matrices are used to generate corresponding children matrices. These second layer child matrices are M1M2×N1N2 matrices with cardinality K1K2, which are defined by reiterating the relationship: C ( M 1 ⁢ M 2 × N 1 ⁢ N 2 ) ( ( i - 1 ) ⁢ K 2 + 1 ) = B 2 ⁢ ( M 2 × N 2 ) ( 1 ) ⊕ A ( M 1 × N 1 ) ( i ) C ( M 1 ⁢ M 2 × N 1 ⁢ N 2 ) ( ( i - 1 ) ⁢ K 2 + 2 ) = B 2 ⁢ ( M 2 × N 2 ) ( 2 ) ⊕ A ( M 1 × N 1 ) ( i ) ⁢ ⋯ C ( M 1 ⁢ M 2 × N 1 ⁢ N 2 ) ( ( i - 1 ) ⁢ K 2 + K 2 ) = B 2 ⁢ ( M 2 × N 2 ) ( K 2 ) ⊕ A ( M 1 × N 1 ) ( i ) where ⊕ indicates a Kronecker product, and i=1, 2, 3, 4, . . . , K1.

8. 发明授权

US06907060B2 Method for generating OVSF codes in CDMA multi-rate system 失效
标题翻译：在CDMA多速率系统中生成OVSF码的方法
公开(公告)号：US06907060B2
公开(公告)日：2005-06-14
申请号：US09824032
申请日：2001-04-03
申请人： Guu-Chang Yang
发明人： Guu-Chang Yang
IPC分类号： H04J11/00 , H04B1/69
CPC分类号： H04J13/12 , H04J13/0044
摘要： In this invention, a new tree-structured generation method for obtaining orthogonal variable spreading factor (OVSF) codes that preserve orthogonality between different rates and spreading factors (SF) based on Gray code labels in a CDMA system is presented. Each OVSF code is uniquely associated with a Gray code label. An efficient method for deciding if the code is a mother code or children code of the other code without searching an entire code tree is proposed. Furthermore, by taking advantage of the Gray code labeling, each OVSF code can be generated directly from a generating matrix instead of being generated recursively using a tree structure. An OVSF code reassignment method with Gray code labeling is also given.
摘要翻译：在本发明中，提出了一种用于基于CDMA系统中的格雷码标签获得保持不同速率和扩频因子（SF）之间的正交性的正交可变扩展因子（OVSF）码的新的树结构生成方法。每个OVSF代码与格雷码标签唯一相关联。提出了一种有效的方法，用于在不搜索整个代码树的情况下决定代码是否是母码或其他代码的子代码。此外，通过利用格雷码标记，可以直接从生成矩阵生成每个OVSF码，而不是使用树结构递归生成。还给出了带有格雷码标签的OVSF码重新分配方法。

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