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51. 发明申请

US20100014563A1 Spectrum spreading signal demodulation method and apparatus 有权
公开(公告)号：US20100014563A1
公开(公告)日：2010-01-21
申请号：US12586531
申请日：2009-09-23
申请人： Katsuyuki Tanaka
发明人： Katsuyuki Tanaka
IPC分类号： H04B1/69
CPC分类号： G06F17/156 , G01S7/4802 , G01S19/29 , G01S19/30 , H04B1/7075 , H04B1/70751 , H04B2201/70715
摘要： A spread spectrum signal demodulating method whereby spread-code synchronous acquisition and carrier synchronous acquisition are performed using FFT at high speed, wherein a received signal, of which the carrier wave is modulated with a signal obtained by spectrum-spreading data with a spread code, is subjected to the FFT and the result of the FFT is stored in a first memory. The FFT result of the received signal stored in the first memory and the result of FFT of the spread code stored in a second memory are read out and multiplied to detect the correlation between the received signal and the spread code. A readout address of either the FFT result of the received signal or the FFT result of the spread code is shifted by an amount corresponding to a carrier frequency of the received signal.

52. 发明申请

US20100014562A1 Spectrum spreading signal demodulation method and apparatus 有权
标题翻译：频谱扩展信号解调方法和装置
公开(公告)号：US20100014562A1
公开(公告)日：2010-01-21
申请号：US12586496
申请日：2009-09-23
申请人： Katsuyuki Tanaka
发明人： Katsuyuki Tanaka
IPC分类号： H04B1/69
CPC分类号： G06F17/156 , G01S7/4802 , G01S19/29 , G01S19/30 , H04B1/7075 , H04B1/70751 , H04B2201/70715
摘要： A spread spectrum signal demodulating method whereby spread-code synchronous acquisition and carrier synchronous acquisition are performed using FFT at high speed, wherein a received signal, of which the carrier wave is modulated with a signal obtained by spectrum-spreading data with a spread code, is subjected to the FFT and the result of the FFT is stored in a first memory. The FFT result of the received signal stored in the first memory and the result of FFT of the spread code stored in a second memory are read out and multiplied to detect the correlation between the received signal and the spread code. A readout address of either the FFT result of the received signal or the FFT result of the spread code is shifted by an amount corresponding to a carrier frequency of the received signal.
摘要翻译：一种扩展频谱信号解调方法，其特征在于，利用高速FFT进行扩频码同步采集和载波同步采集，其中，利用扩展码通过频谱扩展数据获得的信号调制载波的接收信号，进行FFT，FFT的结果存储在第一存储器中。存储在第一存储器中的接收信号的FFT结果和存储在第二存储器中的扩展码的FFT结果被读出并相乘以检测接收信号和扩展码之间的相关性。接收信号的FFT结果或扩展码的FFT结果的读出地址偏移与接收信号的载波频率对应的量。

53. 发明授权

US07602840B2 Acquisition of a gated pilot 有权
标题翻译：获得门控飞行员
公开(公告)号：US07602840B2
公开(公告)日：2009-10-13
申请号：US10873431
申请日：2004-06-21
申请人： Abhay A. Joshi , Arthur James Neufeld
发明人： Abhay A. Joshi , Arthur James Neufeld
IPC分类号： H04B1/69 , H04B1/707 , H04B1/713
CPC分类号： H04B1/70751 , H04B1/70735 , H04B1/7077 , H04B1/709 , H04B2201/70701 , H04B2201/70702
摘要： Systems and techniques to acquire a gated pilot signal by searching for a first gated pilot signal, deriving timing information from the search for the first gated pilot signal, and searching for a second gated pilot signal using the timing information. This can be implemented in a variety of fashions including a receiver with a searcher configured to generate a bit sequence, a correlator configured to correlate a received signal with the bit sequence, and a processor configured to detect a first gated pilot signal as a function of the correlation, derive timing information from the first gated pilot signal, and detect a second gated pilot signal by using the timing information to control the bit sequence generated by the searcher.
摘要翻译：通过搜索第一门控导频信号来获取门控导频信号的系统和技术，从搜索第一门控导频信号导出定时信息，以及使用定时信息搜索第二门控导频信号。这可以以各种方式实现，包括具有被配置为生成比特序列的搜索器的接收机，被配置为将接收到的信号与比特序列相关联的相关器，以及被配置为检测第一门控导频信号作为相关性，从第一门控导频信号导出定时信息，并通过使用定时信息来检测第二门控导频信号，以控制由搜索者产生的比特序列。

54. 发明授权

US07539239B2 Apparatus for rapid PN code acquisition 有权
标题翻译：快速PN码采集装置
公开(公告)号：US07539239B2
公开(公告)日：2009-05-26
申请号：US11533509
申请日：2006-09-20
申请人： Steven T. Barham , Samuel Kingston , Randal R. Sylvester , Ronald Leahy
发明人： Steven T. Barham , Samuel Kingston , Randal R. Sylvester , Ronald Leahy
IPC分类号： H04B1/69 , H04B1/707 , H04B1/713
CPC分类号： H04B1/70751 , H04B1/70735 , H04B1/7077
摘要： An apparatus and method of determining a signal code. The method comprising steps of acquiring and correlating a signal with a first code sequence. In response to the timing lock is achieved. Also in response to the signal correlation, an acknowledge from a receiver of the signal to a transmitter change to a second code sequence.
摘要翻译：一种确定信号码的装置和方法。该方法包括以下步骤：获取信号与第一代码序列相关联。响应时序锁定实现。同样响应于信号相关性，来自发射机的信号的接收机的确认变为第二码序列。

55. 发明授权

US07184463B2 Method and apparatus for demodulating signals processed in a transmit diversity mode 有权
标题翻译：用于解调以发射分集模式处理的信号的方法和装置
公开(公告)号：US07184463B2
公开(公告)日：2007-02-27
申请号：US10651446
申请日：2003-08-28
申请人： Douglas Neal Rowitch , Way-Shing Lee , Thunyachate Ekvetchavit
发明人： Douglas Neal Rowitch , Way-Shing Lee , Thunyachate Ekvetchavit
IPC分类号： H04B1/69 , H04B1/707 , H04B1/713
CPC分类号： H04B1/70751 , H04B1/70752 , H04B1/708 , H04B1/709 , H04B7/0613 , H04J13/004
摘要： Demodulator architectures for processing a received signal in a wireless communications system. The demodulator includes a number of correlators coupled to a combiner. Each correlator typically receives and despreads input samples (which are generated from the received signal) with a respective despreading sequence to provide despread samples. Each correlator then decovers the despread samples to provide decovered “half-symbols” and further demodulates the decovered half-symbols with pilot estimates to generate correlated symbols. The decovering is performed with a Walsh symbol having a length (T) that is half the length (2T) of a Walsh symbol used to cover the data symbols in the transmitted signal. The combiner selectively combines correlated symbols from the assigned correlators to provide demodulated symbols. One or more correlators can be assigned to process one or more instances of each transmitted signal. The pilot estimates used within each assigned correlator to demodulate the decovered half-symbols are generated based on the signal instance being processed by that correlator.
摘要翻译：用于在无线通信系统中处理接收信号的解调器架构。解调器包括耦合到组合器的多个相关器。每个相关器通常以相应的解扩序列接收和解扩输入采样（其从接收信号产生），以提供解扩样本。每个相关器然后解码解扩样本以提供去除的“半符号”，并且用导频估计进一步解调已解除的半符号以产生相关符号。使用具有用于覆盖发送信号中的数据符号的沃尔什符号的长度（2T）的一半的长度（T）的沃尔什符号执行解复用。组合器选择性地组合来自所分配的相关器的相关符号以提供解调符号。可以分配一个或多个相关器来处理每个发射信号的一个或多个实例。在每个分配的相关器内使用的导频估计是根据该相关器正在处理的信号实例产生的。

56. 发明申请

US20070014336A1 APPARATUS FOR RAPID PN CODE ACQUISITION 有权
标题翻译：快速PN代码获取的设备
公开(公告)号：US20070014336A1
公开(公告)日：2007-01-18
申请号：US11533509
申请日：2006-09-20
申请人： Steven Barham , Samuel Kingston , Randal Sylvester , Ronald Leahy
发明人： Steven Barham , Samuel Kingston , Randal Sylvester , Ronald Leahy
IPC分类号： H04B1/707
CPC分类号： H04B1/70751 , H04B1/70735 , H04B1/7077
摘要： An apparatus and method of determining a signal code. The method comprising steps of acquiring and correlating a signal with a first code sequence. In response to the timing lock is achieved. Also in response to the signal correlation, an acknowledge from a receiver of the signal to a transmitter change to a second code sequence.
摘要翻译：一种确定信号码的装置和方法。该方法包括以下步骤：获取信号与第一代码序列相关联。响应时序锁定实现。同样响应于信号相关性，来自发射机的信号的接收机的确认变为第二码序列。

57. 发明申请

US20060285580A1 Combined detection of transmission parameters and spreading factor in CDMA communication system 审中-公开
标题翻译： CDMA通信系统中传输参数和扩频因子的综合检测
公开(公告)号：US20060285580A1
公开(公告)日：2006-12-21
申请号：US11204124
申请日：2005-08-16
申请人： Pasi Kinnunen , Kari Horneman
发明人： Pasi Kinnunen , Kari Horneman
IPC分类号： H04B1/00
CPC分类号： H04B1/70751 , H04B1/70752 , H04B2201/70705
摘要： A solution for determining in a radio receiver a data sequence indicating transmission parameters and a spreading factor applied to a frame before receiving the whole frame in the radio receiver. According to the provided solution, the transmission parameters and the spreading factor are determined from received data of a partially received data sequence indicating the transmission parameters of the frame. The received portion of the data is despread with known possible spreading factors and the despread data is compared with corresponding data of known possible transmitted data sequences. Spreading factor-data sequence combination resulting in the best match with the received data is then determined to be the most probably transmitted data sequence. The results of comparison with respect to the spreading factor may be combined with another spreading factor determination procedure for more reliable detection of the correct spreading factor.
摘要翻译：一种用于在无线电接收机中在接收整个帧之前在无线电接收机中确定指示传输参数和应用于帧的扩展因子的数据序列的解决方案。根据所提供的解决方案，从表示帧的传输参数的部分接收的数据序列的接收数据确定传输参数和扩展因子。数据的接收部分用已知的可能扩频因子进行解扩，并将解扩数据与已知可能发送的数据序列的相应数据进行比较。然后将导致与接收数据最佳匹配的扩频因子数据序列组合确定为最可能传输的数据序列。可以将与扩展因子进行比较的结果与另一种扩展因子确定程序相结合，以更正确的扩展因子的检测。

58. 发明申请

US20060274816A1 Spread spectrum signal demodulating method and apparatus 有权
公开(公告)号：US20060274816A1
公开(公告)日：2006-12-07
申请号：US11496141
申请日：2006-07-31
申请人： Katsuyuki Tanaka
发明人： Katsuyuki Tanaka
IPC分类号： H04B1/00
CPC分类号： G06F17/156 , G01S7/4802 , G01S19/29 , G01S19/30 , H04B1/7075 , H04B1/70751 , H04B2201/70715
摘要： A spread spectrum signal demodulating method whereby spread-code synchronous acquisition and carrier synchronous acquisition are performed using FFT at high speed, wherein a received signal, of which the carrier wave is modulated with a signal obtained by spectrum-spreading data with a spread code, is subjected to the FFT and the result of the FFT is stored in a first memory. The FFT result of the received signal stored in the first memory and the result of FFT of the spread code stored in a second memory are read out and multiplied to detect the correlation between the received signal and the spread code. A readout address of either the FFT result of the received signal or the FFT result of the spread code is shifted by an amount corresponding to a carrier frequency of the received signal.

59. 发明授权

US06771688B1 Segmented architecture for multiple sequence detection and identification in fading channels 有权
标题翻译：衰落信道中多序列检测和识别的分段架构
公开(公告)号：US06771688B1
公开(公告)日：2004-08-03
申请号：US09664646
申请日：2000-09-19
申请人： Jung Ah Lee , Steven Andrew Wood , Gregory J Wroclawski , Woodson Dale Wynn
发明人： Jung Ah Lee , Steven Andrew Wood , Gregory J Wroclawski , Woodson Dale Wynn
IPC分类号： H04L2730
CPC分类号： H04B1/70752 , H04B1/70751 , H04B1/709
摘要： Known sequences are detected and identified in a fast fading environment using a segmented correlator and FHT (Fast Hadamard Transform) architecture. The incoming sequence of samples or data is segmented into blocks. Each block is individually detected using a correlator/FHT segment. Each sequence identifying output of each correlator/FHT segment is summed with the corresponding output of other correlator/FHT segments. Each sum is compared with a threshold to determine whether a particular sequence has been detected and identified.
摘要翻译：使用分段相关器和FHT（快速Hadamard变换）架构，在快速衰落环境中检测和识别已知序列。输入的样本或数据序列被分段成块。使用相关器/ FHT段单独检测每个块。识别每个相关器/ FHT段的输出的每个序列与其他相关器/ FHT段的相应输出相加。将每个和与阈值进行比较，以确定是否已经检测和识别了特定序列。

60. 发明授权

US06628702B1 Method and apparatus for demodulating signals processed in a transmit diversity mode 有权
公开(公告)号：US06628702B1
公开(公告)日：2003-09-30
申请号：US09594466
申请日：2000-06-14
申请人： Douglas Neal Rowitch , Way-Shing Lee , Thunyachate Ekvetchavit
发明人： Douglas Neal Rowitch , Way-Shing Lee , Thunyachate Ekvetchavit
IPC分类号： H04B1500
CPC分类号： H04B1/70751 , H04B1/70752 , H04B1/708 , H04B1/709 , H04B7/0613 , H04J13/004
摘要： Demodulator architectures for processing a received signal in a wireless communications system. The demodulator includes a number of correlators coupled to a combiner. Each correlator typically receives and despreads input samples (which are generated from the received signal) with a respective despreading sequence to provide despread samples. Each correlator then decovers the despread samples to provide decovered “half-symbols” and further demodulates the decovered half-symbols with pilot estimates to generate correlated symbols. The decovering is performed with a Walsh symbol having a length (T) that is half the length (2T) of a Walsh symbol used to cover the data symbols in the transmitted signal. The combiner selectively combines correlated symbols from the assigned correlators to provide demodulated symbols. One or more correlators can be assigned to process one or more instances of each transmitted signal. The pilot estimates used within each assigned correlator to demodulate the decovered half-symbols are generated based on the signal instance being processed by that correlator.

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