Efficient Implementation of M-Algorithm Based on QR Decomposition for Higher-Order Constellations
    1.
    发明申请
    Efficient Implementation of M-Algorithm Based on QR Decomposition for Higher-Order Constellations 有权
    基于QR分解的高阶星座的M算法的有效实现

    公开(公告)号:US20120155579A1

    公开(公告)日:2012-06-21

    申请号:US12974039

    申请日:2010-12-21

    IPC分类号: H04L27/06

    摘要: A method of detecting received data in a communication system includes the steps of: performing a QR decomposition on a received input vector as a function of one or more characteristics of a communication channel over which the input vector was transmitted; generating a subset of best symbol candidates from a symbol constellation by comparing an input sample (corresponding to an element of the input vector) with one or more prescribed thresholds; identifying at least one symbol satisfying prescribed minimum Euclidian distance criteria among multiple ambiguity symbols in the subset of best symbol candidates; and generating a subset of best symbols including a prescribed number of symbols from the symbol constellation determined to be closest to the input sample. The subset of best symbols is used in a subsequent iteration of the steps of generating the subset of best symbol candidates and identifying at least one symbol satisfying the prescribed minimum Euclidian distance criteria.

    摘要翻译: 一种在通信系统中检测接收到的数据的方法包括以下步骤:根据所传送的输入向量的通信信道的一个或多个特征,对所接收的输入向量执行QR分解; 通过将输入样本(对应于输入向量的元素)与一个或多个规定阈值进行比较,从符号星座生成最佳符号候选的子集; 识别在最佳符号候选的子集中的多个模糊符号中满足规定的最小欧几里德距离标准的至少一个符号; 以及从确定为最接近所述输入样本的所述符号星座生成包括规定数量的符号的最佳符号的子集。 最佳符号的子集用于生成最佳符号候选的子集的步骤的后续迭代,并且识别满足规定的最小欧几里德距离标准的至少一个符号。

    TECHNIQUE FOR SEARCHING FOR A PREAMBLE SIGNAL IN A SPREAD SPECTRUM SIGNAL USING A FAST HADAMARD TRANSFORM
    2.
    发明申请
    TECHNIQUE FOR SEARCHING FOR A PREAMBLE SIGNAL IN A SPREAD SPECTRUM SIGNAL USING A FAST HADAMARD TRANSFORM 有权
    使用快速HADAMARD变换在扩展频谱信号中搜索可预测信号的技术

    公开(公告)号:US20100027592A1

    公开(公告)日:2010-02-04

    申请号:US12181624

    申请日:2008-07-29

    IPC分类号: H04B1/707

    CPC分类号: H04B1/7075 H04B2001/70935

    摘要: In one embodiment, a method for demodulating and searching for a preamble signal containing a complex phasor signal is disclosed. The complex phasor is demodulated using a phasor-rotated fast transformer. A received signal is correlated with a spreading code to produce a correlated signal. The correlated signal is coherently accumulated to produce a coherently accumulated signal. A first phasor-rotated signal transformation is performed on a real component of the coherently accumulated signal, and a second phasor-rotated signal transformation is performed on an imaginary component of the coherently accumulated signal. Finally, the signal power of the transformed real and imaginary components of the coherently accumulated signal is determined.

    摘要翻译: 在一个实施例中,公开了一种用于解调和搜索包含复相量信号的前同步信号的方法。 使用相量旋转的快速变压器对复相量进行解调。 接收到的信号与扩展码相关以产生相关信号。 相关信号被相干累积以产生相干累积信号。 对相干累加信号的实分量执行第一相量旋转信号变换,并对相干累加信号的虚分量执行第二相量旋转信号变换。 最后,确定相干累加信号的变换的实分量和虚分量的信号功率。

    Technique for searching for a preamble signal in a spread spectrum using a fast hadamard transform
    3.
    发明授权
    Technique for searching for a preamble signal in a spread spectrum using a fast hadamard transform 失效
    使用快速哈马达变换在扩展频谱中搜索前置信号的技术

    公开(公告)号:US08571090B2

    公开(公告)日:2013-10-29

    申请号:US13494076

    申请日:2012-06-12

    IPC分类号: H04B1/00

    CPC分类号: H04B1/7075 H04B2001/70935

    摘要: In one embodiment, a method for demodulating and searching for a preamble signal containing a complex phasor signal is disclosed. The complex phasor is demodulated using a phasor-rotated fast transformer. A received signal is correlated with a spreading code to produce a correlated signal. The correlated signal is coherently accumulated to produce a coherently accumulated signal. A first phasor-rotated signal transformation is performed on a real component of the coherently accumulated signal, and a second phasor-rotated signal transformation is performed on an imaginary component of the coherently accumulated signal. Finally, the signal power of the transformed real and imaginary components of the coherently accumulated signal is determined.

    摘要翻译: 在一个实施例中,公开了一种用于解调和搜索包含复相量信号的前同步信号的方法。 使用相量旋转的快速变压器对复相量进行解调。 接收到的信号与扩展码相关以产生相关信号。 相关信号被相干累积以产生相干累积信号。 对相干累加信号的实分量执行第一相量旋转信号变换,并对相干累加信号的虚分量执行第二相量旋转信号变换。 最后,确定相干累加信号的变换的实分量和虚分量的信号功率。

    Efficient implementation of M-algorithm based on QR decomposition for higher-order constellations
    4.
    发明授权
    Efficient implementation of M-algorithm based on QR decomposition for higher-order constellations 有权
    基于QR分解的高阶星座的M-algorithm的有效实现

    公开(公告)号:US08503584B2

    公开(公告)日:2013-08-06

    申请号:US12974039

    申请日:2010-12-21

    IPC分类号: H04L27/06

    摘要: A method of detecting received data in a communication system includes the steps of: performing a QR decomposition on a received input vector as a function of one or more characteristics of a communication channel over which the input vector was transmitted; generating a subset of best symbol candidates from a symbol constellation by comparing an input sample (corresponding to an element of the input vector) with one or more prescribed thresholds; identifying at least one symbol satisfying prescribed minimum Euclidian distance criteria among multiple ambiguity symbols in the subset of best symbol candidates; and generating a subset of best symbols including a prescribed number of symbols from the symbol constellation determined to be closest to the input sample. The subset of best symbols is used in a subsequent iteration of the steps of generating the subset of best symbol candidates and identifying at least one symbol satisfying the prescribed minimum Euclidian distance criteria.

    摘要翻译: 一种在通信系统中检测接收到的数据的方法包括以下步骤:根据所传送的输入向量的通信信道的一个或多个特征,对所接收的输入向量执行QR分解; 通过将输入样本(对应于输入向量的元素)与一个或多个规定阈值进行比较,从符号星座生成最佳符号候选的子集; 识别在最佳符号候选的子集中的多个模糊符号中满足规定的最小欧几里德距离标准的至少一个符号; 以及从确定为最接近所述输入样本的所述符号星座生成包括规定数量的符号的最佳符号的子集。 最佳符号的子集用于生成最佳符号候选的子集的步骤的后续迭代,并且识别满足规定的最小欧几里德距离标准的至少一个符号。

    Technique for Searching for a Preamble Signal in a Spread Spectrum Signal Using a Fast Hadamard Transform
    5.
    发明申请
    Technique for Searching for a Preamble Signal in a Spread Spectrum Signal Using a Fast Hadamard Transform 失效
    使用快速Hadamard变换搜索扩频信号中的前导信号的技术

    公开(公告)号:US20120250732A1

    公开(公告)日:2012-10-04

    申请号:US13494076

    申请日:2012-06-12

    IPC分类号: H04B1/707

    CPC分类号: H04B1/7075 H04B2001/70935

    摘要: In one embodiment, a method for demodulating and searching for a preamble signal containing a complex phasor signal is disclosed. The complex phasor is demodulated using a phasor-rotated fast transformer. A received signal is correlated with a spreading code to produce a correlated signal. The correlated signal is coherently accumulated to produce a coherently accumulated signal. A first phasor-rotated signal transformation is performed on a real component of the coherently accumulated signal, and a second phasor-rotated signal transformation is performed on an imaginary component of the coherently accumulated signal. Finally, the signal power of the transformed real and imaginary components of the coherently accumulated signal is determined.

    摘要翻译: 在一个实施例中,公开了一种用于解调和搜索包含复相量信号的前同步信号的方法。 使用相量旋转的快速变压器对复相量进行解调。 接收到的信号与扩展码相关以产生相关信号。 相关信号被相干累积以产生相干累积信号。 对相干累加信号的实分量执行第一相量旋转信号变换,并对相干累加信号的虚分量执行第二相量旋转信号变换。 最后,确定相干累加信号的变换的实分量和虚分量的信号功率。

    Technique for searching for a preamble signal in a spread spectrum signal using a fast Hadamard transform
    6.
    发明授权
    Technique for searching for a preamble signal in a spread spectrum signal using a fast Hadamard transform 有权
    使用快速Hadamard变换在扩展频谱信号中搜索前置信号的技术

    公开(公告)号:US08228971B2

    公开(公告)日:2012-07-24

    申请号:US12181624

    申请日:2008-07-29

    IPC分类号: H04B1/00

    CPC分类号: H04B1/7075 H04B2001/70935

    摘要: In one embodiment, a method for demodulating and searching for a preamble signal containing a complex phasor signal is disclosed. The complex phasor is demodulated using a phasor-rotated fast transformer. A received signal is correlated with a spreading code to produce a correlated signal. The correlated signal is coherently accumulated to produce a coherently accumulated signal. A first phasor-rotated signal transformation is performed on a real component of the coherently accumulated signal, and a second phasor-rotated signal transformation is performed on an imaginary component of the coherently accumulated signal. Finally, the signal power of the transformed real and imaginary components of the coherently accumulated signal is determined.

    摘要翻译: 在一个实施例中,公开了一种用于解调和搜索包含复相量信号的前同步信号的方法。 使用相量旋转的快速变压器对复相量进行解调。 接收到的信号与扩展码相关以产生相关信号。 相关信号被相干累积以产生相干累积信号。 对相干累加信号的实分量执行第一相量旋转信号变换,并对相干累加信号的虚分量执行第二相量旋转信号变换。 最后,确定相干累加信号的变换的实分量和虚分量的信号功率。