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1. 发明授权

US5463657A Detection of a multi-sequence spread spectrum signal 失效
标题翻译：检测多序列扩频信号
公开(公告)号：US5463657A
公开(公告)日：1995-10-31
申请号：US196577
申请日：1994-02-15
申请人： Bart F. Rice
发明人： Bart F. Rice
IPC分类号： H04J11/00 , H04J13/00 , H04J13/12 , H04B1/69
CPC分类号： H04J13/0048 , H04J13/12
摘要： A detector of a multiple-sequence spread spectrum signal uses a Hadamard transform (106) to simultaneously correlate a received signal comprising two sequences (64) with a plurality of candidate sequences. The received signal is stripped of the first sequence (65, 66), and the signal is permuted (via a table lookup) (104). A Hadamard transform is performed on the permuted data and the candidate sequences (106). After transformation, the data is permuted again (112 ) to determine the symbol (sequence) transmitted. Alternatively, Fast Fourier Transforms (FFTs) (FIG. 3), Winograd Fourier Transform Algorithms (WFTA), or other cyclic correlation algorithms (FIG. 5) may be used to compute the transformation. In a preferred embodiment, a "pilot" signal is transmitted in quadrature (90 degrees phase offset) with an information-bearing signal. And, a block error correcting code (150) (e.g., a modified Reed-Solomon code) is transmitted with the information-bearing signal a(t). The block length of the block error correcting code (150) is equal to an integral multiple of the period of the pilot signal. The period of the pilot signal is an integral multiple of the information bearing signal. Thus, carrier recovery, sequence synchronization, and block code synchronization are all achieved simultaneously by correlating (synchronizing) the received signal with a baseband version of the pilot signal.
摘要翻译：多序列扩频信号的检测器使用Hadamard变换（106）来将包含两个序列（64）的接收信号与多个候选序列同时相关。接收到的信号被剥离第一序列（65,66），并且该信号被置换（通过表查找）（104）。对置换的数据和候选序列（106）执行Hadamard变换。转换后，数据再次置换（112）以确定发送的符号（序列）。或者，可以使用快速傅里叶变换（FFT）（图3），Winograd傅里叶变换算法（WFTA）或其他循环相关算法（图5）来计算变换。在优选实施例中，使用信息承载信号以正交（90度相位偏移）传输“导频”信号。并且，利用信息承载信号a（t）发送块纠错码（150）（例如，修改的里德 - 所罗门码）。块纠错码（150）的块长度等于导频信号周期的整数倍。导频信号的周期是信息承载信号的整数倍。因此，通过将接收的信号与导频信号的基带版本相关（同步）来同时实现载波恢复，序列同步和块码同步。

2. 发明授权

US5452328A Technique for generating sets of binary spreading-code sequences for a high data-rate spread-spectrum network 失效
标题翻译：用于生成用于高数据速率扩频网络的二进制扩展码序列的技术
公开(公告)号：US5452328A
公开(公告)日：1995-09-19
申请号：US100334
申请日：1993-07-30
申请人： Bart F. Rice
发明人： Bart F. Rice
IPC分类号： H04B1/707 , H04B1/7075 , H04J13/00 , H04J13/10 , H04J13/16 , H04B1/69
CPC分类号： H04J13/0074 , H04B1/707 , H04B1/7075 , H04J13/00 , H04J13/10 , H04J13/102 , H04J13/0077 , H04J13/16
摘要： A method and apparatus for electrically generating sets of binary spreading-code sequences for use in a multi-node communication network are disclosed. A method for assigning disjoint sets of binary spreading-code sequences to different nodes of such a network is also disclosed. Each set of binary spreading-code sequences consists of multiple sequences, which are generated using two binary shift registers. The sequences can be generated simultaneously, or sequence segments can be generated sequentially. To generate sequences simultaneously, the contents of multiple pairs of stages of two linear-feedback binary shift registers are combined by modulo-2 addition, where each pair of stages consists of one stage from each of the two binary shift registers. To generate sequence segments sequentially, the contents of a single stage of a first binary shift register are combined by modulo-2 addition with the contents of a single stage of a second binary shift register, where new fills are switched into each of the registers at the beginning of each period. To assign disjoint sets of binary spreading-code sequences to different nodes of the network, the initial fill of the first binary shift register is fixed and different initial fills are specified for the second binary shift register.
摘要翻译：公开了一种用于电生成用于多节点通信网络的二进制扩展码序列集合的方法和装置。还公开了用于将不相交的二进制扩展码序列集合分配给这种网络的不同节点的方法。每组二进制扩展码序列由使用两个二进制移位寄存器生成的多个序列组成。可以同时生成序列，也可以顺序生成序列片段。为了同时产生序列，通过模2加法来组合两个线性反馈二进制移位寄存器的多对级的内容，其中每对级由两个二进制移位寄存器中的每一个组成。为了顺序地产生序列片段，第一二进制移位寄存器的单级的内容通过模2加上与第二二进制移位寄存器的单级的内容组合，其中新的填充被切换到每个寄存器每个时期的开始为了将不相交的二进制扩展码序列集合分配给网络的不同节点，第一个二进制移位寄存器的初始填充是固定的，并且为第二个二进制移位寄存器指定了不同的初始填充。

3. 发明授权

US5519735A Reconstructing a primary signal from many secondary signals 失效
标题翻译：从许多辅助信号重构主信号
公开(公告)号：US5519735A
公开(公告)日：1996-05-21
申请号：US234231
申请日：1994-04-28
申请人： Bart F. Rice , Michael E. Wilhoyte
发明人： Bart F. Rice , Michael E. Wilhoyte
IPC分类号： H04B7/005 , H04B7/12 , H04L1/02
CPC分类号： H04B7/005
摘要： An original signal, different portions of which are captured by two or more different receivers, is reconstructed from the outputs of the various receivers. In a first embodiment, signal reconstruction is achieved by first converting the analog receiver outputs into digital signals and then shifting the frequency of at least one of the digital signals such that a frequency difference is introduced between at least two of the digital signals. Thereafter, each digital signal is processed through a corresponding filter (38, 40) to derive filtered signals. These filtered signals are combined to derive a primary output signal which is a representation of the original signal. After the primary output signal is derived, it is passed on to an error determiner (44) where an error component is computed. This error component is used to adjust the parameters of the filters (38, 40) in such a manner as to reduce the error component. In an alternative method, the original signal is reconstructed by first processing all but one of the digital signals through a corresponding (114) filter to derive one or more filtered signals. The filtered signal or signals are combined with the digital signal which was not filtered to derive an intermediate output signal. The intermediate output signal is processed through another filter (120) to derive a primary output signal representative of the original signal. As with the first method, the primary output signal is sent to an error determiner (126) where an error component is computed. This error component is used to adjust the parameters of all of the filters (114, 120) to reduce the error component. The present invention provides a robust solution for reconstructing multichannel signals which is capable of tolerating variable frequency overlaps, relative time delays between signals on the multiple channels, and some degree of frequency offset.
摘要翻译：从各种接收机的输出重建原始信号，其不同部分由两个或多个不同的接收机捕获。在第一实施例中，通过首先将模拟接收器输出转换为数字信号，然后移位至少一个数字信号的频率，使得在至少两个数字信号之间引入频率差来实现信号重建。此后，每个数字信号通过对应的滤波器（38,40）进行处理以得到滤波信号。这些滤波信号被组合以导出作为原始信号的表示的主输出信号。在导出主输出信号之后，它被传递到错误确定器（44），其中计算出错误分量。该误差分量用于调整滤波器（38,40）的参数，以减少误差分量。在替代方法中，通过首先通过相应的（114）滤波器处理除数字信号之外的所有数字信号以导出一个或多个滤波信号来重建原始信号。经滤波的信号或信号与未被滤波的数字信号组合以导出中间输出信号。通过另一个滤波器（120）对中间输出信号进行处理，以得到表示原始信号的主要输出信号。与第一种方法一样，主输出信号被发送到错误确定器（126），其中计算出错误分量。该错误组件用于调整所有过滤器（114,120）的参数以减少误差分量。本发明提供了一种用于重构能够容忍可变频率重叠，多个信道上的信号之间的相对时间延迟以及某种程度的频率偏移的多信道信号的鲁棒解决方案。

4. 发明授权

US07924906B2 Spread-spectrum receiver 失效
标题翻译：扩频接收机
公开(公告)号：US07924906B2
公开(公告)日：2011-04-12
申请号：US11470967
申请日：2006-09-07
申请人： Bart F. Rice
发明人： Bart F. Rice
IPC分类号： H04B1/00
CPC分类号： H04J13/0074 , H04B1/707 , H04B1/7075 , H04J13/00 , H04J13/0077 , H04J13/10 , H04J13/102 , H04J13/16
摘要： An assembly of simultaneously transmitted electrically generated signals, which contains a subset of binary spreading-code sequences that are members of a large set of binary spreading-code sequences available to a particular node of a multi-node communication network. All sequences in the set of spreading-code sequences available to the particular node of the network can be generated by the same configurations of two linear feedback binary shift registers, where feedback taps of the two linear-feedback binary shift registers correspond to primitive polynomials of the same degree over GF(2), the field of two elements.
摘要翻译：包含同时发送的电产生信号的组合，其包含作为多节点通信网络的特定节点可用的较大二进制扩展码序列的成员的二进制扩展码序列的子集。可以通过两个线性反馈二进制移位寄存器的相同配置来产生可用于网络的特定节点的扩展码序列集合中的所有序列，其中两个线性反馈二进制移位寄存器的反馈抽头对应于原始多项式与GF（2）相同的程度，两个要素的领域。

5. 发明授权

US07760792B2 Spread spectrum electromagnetic signals 失效
标题翻译：扩频电磁信号
公开(公告)号：US07760792B2
公开(公告)日：2010-07-20
申请号：US09759425
申请日：2001-01-12
申请人： Bart F. Rice
发明人： Bart F. Rice
IPC分类号： H04J11/00
CPC分类号： H04J13/0074 , H04B1/707 , H04B1/7075 , H04J13/00 , H04J13/0077 , H04J13/10 , H04J13/102 , H04J13/16
摘要： An assembly of simultaneously transmitted electrically generated signals, which contains a subset of binary spreading-code sequences that are members of a larger set of binary spreading-code sequences available to a particular node of a multi-node communication network. All sequences in the set of spreading-code sequences available to the particular node of the network can be generated by the same configuration of two linear-feedback binary shift registers, where feedback taps of the two linear-feedback binary shift registers correspond to primative polynomials of the same degree over GF(2), the field of two elements.
摘要翻译：包含同时发送的电产生信号的组合，其包含作为多节点通信网络的特定节点可用的较大二进制扩展码序列的成员的二进制扩展码序列的子集。可以通过两个线性反馈二进制移位寄存器的相同配置来生成可用于网络的特定节点的扩展码序列集合中的所有序列，其中两个线性反馈二进制移位寄存器的反馈抽头对应于主要多项式与GF（2）相同的程度，两个要素的领域。

6. 发明授权

US06621854B1 Spread-spectrum electromagnetic signals 失效
标题翻译：扩频电磁信号
公开(公告)号：US06621854B1
公开(公告)日：2003-09-16
申请号：US08003996
申请日：1993-01-15
申请人： Bart F. Rice
发明人： Bart F. Rice
IPC分类号： H04B169
CPC分类号： H04J13/0074 , H04B1/707 , H04B1/7075 , H04J13/00 , H04J13/0077 , H04J13/10 , H04J13/102 , H04J13/16
摘要： An assembly of simultaneously transmitted electrically generated signals is disclosed, which contains a subset of binary spreading-code sequences that are members of a larger set of binary spreading-code sequences available to a particular node of a multi-node communication network. All sequences in the set of spreading-code sequences available to the particular node of the network can be generated by the same configuration of two linear-feedback binary shift registers, where feedback taps of the two linear-feedback binary shift registers correspond to primative polynomials of the same degree over GF(2), the field of two elements.
摘要翻译：公开了一种同时传输的电气产生信号的组合，其包含作为多节点通信网络的特定节点可用的较大二进制扩展码序列的成员的二进制扩展码序列的子集。可以通过两个线性反馈二进制移位寄存器的相同配置来生成可用于网络的特定节点的扩展码序列集合中的所有序列，其中两个线性反馈二进制移位寄存器的反馈抽头对应于主要多项式与GF（2）相同的程度，两个要素的领域。

7. 发明授权

US07457348B2 Spread-spectrum transceiver 失效
标题翻译：扩频收发器
公开(公告)号：US07457348B2
公开(公告)日：2008-11-25
申请号：US11468923
申请日：2006-08-31
申请人： Bart F. Rice
发明人： Bart F. Rice
IPC分类号： H05B1/00
CPC分类号： H04J13/0074 , H04B1/707 , H04B1/7075 , H04J13/00 , H04J13/0077 , H04J13/10 , H04J13/102 , H04J13/16
摘要： An assembly of simultaneously transmitted electrically generated signals, which contains a subset of binary spreading-code sequences that are members of a larger set of binary spreading-code sequences available to a particular node of a multi-node communication network. All sequences in the set of spreading-code sequences available to the particular node of the network can be generated by the same configuration of two linear-feedback binary shift registers, where feedback taps of the two linear-feedback binary shift registers correspond to primitive polynomials of the same degree over GF(2), the field of two elements.
摘要翻译：包含同时发送的电产生信号的组合，其包含作为多节点通信网络的特定节点可用的较大二进制扩展码序列的成员的二进制扩展码序列的子集。可以通过两个线性反馈二进制移位寄存器的相同配置来产生可用于网络的特定节点的扩展码序列集合中的所有序列，其中两个线性反馈二进制移位寄存器的反馈抽头对应于原始多项式与GF（2）相同的程度，两个要素的领域。

8. 发明授权

US5815526A Signal comprising binary spreading-code sequences 失效
公开(公告)号：US5815526A
公开(公告)日：1998-09-29
申请号：US456077
申请日：1995-05-31
申请人： Bart F. Rice
发明人： Bart F. Rice
IPC分类号： H04B1/707 , H04B1/7075 , H04J13/00 , H04J13/10 , H04J13/16
CPC分类号： H04J13/0074 , H04B1/707 , H04B1/7075 , H04J13/00 , H04J13/10 , H04J13/102 , H04J13/0077 , H04J13/16
摘要： A method and apparatus for electrically generating sets of binary spreading-code sequences for use in a multi-node communication network. Also, a method for assigning disjoint sets of binary spreading-code sequences to different nodes of such a network. Each set of binary spreading-code sequences consists of multiple sequences, which are generated using two binary shift registers. The sequences can be generated simultaneously, or sequence segments can be generated sequentially. To generate sequences simultaneously, the contents of multiple pairs of stages of two linear-feedback binary shift registers are combined by modulo-2 addition, where each pair of stages consists of one stage from each of the two binary shift registers. To generate sequence segments sequentially, the contents of a single stage of a first binary shift register are combined by modulo-2 addition with the contents of a single stage of a second binary shift register, where new fills are switched into each of the registers at the beginning of each period. To assign disjoint sets of binary spreading-code sequences to different nodes of the network, the initial fill of the first binary shift register is fixed and different initial fills are specified for the second binary shift register.

9. 发明授权

US5210770A Multiple-signal spread-spectrum transceiver 失效
标题翻译：多信号扩频收发器
公开(公告)号：US5210770A
公开(公告)日：1993-05-11
申请号：US766372
申请日：1991-09-27
申请人： Bart F. Rice
发明人： Bart F. Rice
IPC分类号： H04B1/707 , H04B1/7075 , H04J13/00 , H04J13/10 , H04J13/16
CPC分类号： H04J13/0074 , H04B1/707 , H04B1/7075 , H04J13/00 , H04J13/10 , H04J13/102 , H04J13/0077 , H04J13/16
摘要： A method and apparatus for communication in a spread spectrum network are disclosed. Blocks of bits embodying information are assigned to corresponding subsets of binary spreading code sequences and at least one of the subsets of binary spreading code sequences contains more than one binary spreading code sequence. Selected subsets of the binary spreading code sequences are then simultaneously transmitted from a transmitting node to a receiving node.
摘要翻译：公开了一种在扩频网络中通信的方法和装置。将体现信息的位块分配给二进制扩展码序列的相应子集，并且二进制扩展码序列的子集中的至少一个包含多于一个的二进制扩展码序列。二进制扩展码序列的选定子集然后从发送节点同时发送到接收节点。

10. 发明申请

US20100215078A1 SPREAD SPECTRUM TRANSCEIVER 审中-公开
标题翻译：传播光谱收发器
公开(公告)号：US20100215078A1
公开(公告)日：2010-08-26
申请号：US12755012
申请日：2010-04-06
申请人： Bart F. Rice
发明人： Bart F. Rice
IPC分类号： H04B1/707
CPC分类号： H04J13/0074 , H04B1/707 , H04B1/7075 , H04J13/00 , H04J13/0077 , H04J13/10 , H04J13/102 , H04J13/16
摘要： An assembly of simultaneously transmitted electrically generated signals, which contains a subset of binary spreading-code sequences that are members of a larger set of binary spreading-code sequences available to a particular node of a multi-node communication network. All sequences in the set of spreading-code sequences available to the particular node of the network can be generated by the same configuration of two linear-feedback binary shift registers, where feedback taps of the two linear-feedback binary shift registers correspond to primative polynomials of the same degree over GF(2), the field of two elements.
摘要翻译：包含同时发送的电产生信号的组合，其包含作为多节点通信网络的特定节点可用的较大二进制扩展码序列的成员的二进制扩展码序列的子集。可以通过两个线性反馈二进制移位寄存器的相同配置来生成可用于网络的特定节点的扩展码序列集合中的所有序列，其中两个线性反馈二进制移位寄存器的反馈抽头对应于主要多项式与GF（2）相同的程度，两个要素的领域。

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