专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

51. 发明授权

US09160581B2 Receiver with Doppler tolerant equalization 有权
标题翻译：具有多普勒容限均衡的接收机
公开(公告)号：US09160581B2
公开(公告)日：2015-10-13
申请号：US13997290
申请日：2012-05-15
申请人： Evgeny Bakin , Grigory Evseev , Evgeny Pustovalov , Andrey Turlikov
发明人： Evgeny Bakin , Grigory Evseev , Evgeny Pustovalov , Andrey Turlikov
IPC分类号： H04L27/06 , H04L25/03 , H04L25/02 , H04B1/707
CPC分类号： H04L25/03885 , H04B2001/70724 , H04L25/0212 , H04L25/023 , H04L25/0256 , H04L25/03133
摘要： A mobile communication device to equalize a Doppler shifted received signal according to one embodiment is configured to: extract one or more pilot signals from a segment of the received signal; perform Minimum Mean Square Error (MMSE) filtering on the extracted pilot signals, wherein the filter provides estimated pilot signal impulse responses; estimate the amplitudes of one or more path components of the estimated pilot signal impulse responses; estimate the phases of one or more path components of the estimated pilot signal impulse responses; and combine the estimated amplitudes and the estimated phases of the path components of the pilot signal impulse responses, wherein the combination provides an estimated channel impulse response.
摘要翻译：根据一个实施例的用于均衡多普勒频移接收信号的移动通信设备被配置为：从接收信号的段中提取一个或多个导频信号; 对所提取的导频信号执行最小均方误差（MMSE）滤波，其中所述滤波器提供估计的导频信号脉冲响应; 估计所估计的导频信号脉冲响应的一个或多个路径分量的振幅; 估计所估计的导频信号脉冲响应的一个或多个路径分量的相位; 并组合导频信号脉冲响应的路径分量的估计振幅和估计相位，其中该组合提供估计的信道脉冲响应。

52. 发明授权

US08848846B2 Receiver 有权
标题翻译：接收器
公开(公告)号：US08848846B2
公开(公告)日：2014-09-30
申请号：US12967120
申请日：2010-12-14
申请人： Herbert Dawid , Thorsten Clevorn , Christian Drewes , Edgar Bolinth
发明人： Herbert Dawid , Thorsten Clevorn , Christian Drewes , Edgar Bolinth
IPC分类号： H04B7/08 , H04L1/02 , H04B1/712 , H04B1/707
CPC分类号： H04B7/0845 , H04B1/712 , H04B2001/70724
摘要： A receiver includes a plurality of receive antennas configured to receive radio signals from a plurality of transmit antennas, and a plurality of sets of RAKE fingers configured to generate first signals, wherein each set of RAKE fingers is coupled to a respective one of the plurality of receive antennas. The receiver further includes a weighting factor generator configured to generate weighting factors for weighting the first signals, wherein at least one of the weighting factors is generated by using first signals that are generated by at least two of the plurality of sets of RAKE fingers and received from at least two of the plurality of transmit antennas.
摘要翻译：接收机包括被配置为从多个发射天线接收无线电信号的多个接收天线以及被配置为产生第一信号的多组RAKE指，其中每组RAKE指被耦合到多个发射天线中的相应一个接收天线。所述接收机还包括加权因子发生器，其被配置为产生用于对所述第一信号进行加权的加权因子，其中通过使用由所述多个RAKE手指中的至少两个产生并接收到的第一信号来生成所述加权因子中的至少一个从多个发射天线中的至少两个发射天线。

53. 发明授权

US08798116B2 Pre-phase error correction 有权
标题翻译：预相位误差校正
公开(公告)号：US08798116B2
公开(公告)日：2014-08-05
申请号：US13942015
申请日：2013-07-15
申请人： InterDigital Technology Corporation
发明人： John D. Kaewell
IPC分类号： H04B1/00
CPC分类号： H04L27/20 , H04B1/62 , H04B1/69 , H04B1/7097 , H04B1/711 , H04B2001/70724 , H04B2201/696 , H04B2201/709709 , H04L2027/0022
摘要： A CDMA communication system includes a signal processor which encodes voice and nonvoice signals into data at various rates, e.g. data rates of 8 kbps, 16 kbps, 32 kbps, or 64 kbps as I and Q signals. The signal processor selects a specific data rate depending upon the type of signal, or in response to a set data rate. When the signal is received and demodulated, the baseband signal is at the chip level. Both the I and Q components of the signal are despread using the conjugate of the pn sequence used during spreading, returning the signal to the symbol level. Carrier offset correction is performed at the symbol level. A lower overall processing speed is therefore required.
摘要翻译： CDMA通信系统包括信号处理器，其以不同的速率将语音和非发音信号编码成数据，例如，数据速率为8kbps，16kbps，32kbps或64kbps作为I和Q信号。信号处理器根据信号的类型或响应于设定的数据速率来选择特定的数据速率。当信号被接收和解调时，基带信号处于芯片级。信号的I和Q分量都使用扩展期间使用的pn序列的共轭进行解扩，将信号返回到符号级。载波偏移校正在符号级进行。因此，需要较低的总体处理速度。

54. 发明授权

US08509145B1 Method and system for using multiple pseudonoise (PN) increments 失效
标题翻译：使用多个伪噪声（PN）增量的方法和系统
公开(公告)号：US08509145B1
公开(公告)日：2013-08-13
申请号：US11961664
申请日：2007-12-20
申请人： Siddharth S. Oroskar , Manoj Shetty , Sachin R. Vargantwar , Anoop Goyal , Kamal Doshi
发明人： Siddharth S. Oroskar , Manoj Shetty , Sachin R. Vargantwar , Anoop Goyal , Kamal Doshi
IPC分类号： H04W4/00 , H04W36/00 , H04B7/216
CPC分类号： H04J13/0022 , H04B2001/70724 , H04W36/0083
摘要： A first serving system controls a first group of sectors that transmit pilot signals having pseudonoise (PN) offsets corresponding to a first PN increment, and a second serving system controls a second group of sectors that transmit pilot signals having PN offsets corresponding to a second PN increment. The first serving system serves a mobile station via a sector in the first group and determines that the mobile station is likely to be in a communication range of at least one sector in the second group. In response, the first serving system instructs the mobile station to use the second PN increment when scanning for pilot signals. Thereafter, the mobile station may use the first PN increment to scan for pilot signals to add to its remaining set and, if the remaining set is not large enough, may then use the second PN increment to scan for additional pilot signals.
摘要翻译：第一服务系统控制发送具有对应于第一PN增量的伪噪声（PN）偏移的导频信号的第一组扇区，并且第二服务系统控制发送具有对应于第二PN的PN偏移的导频信号的第二组扇区增量。第一服务系统经由第一组中的扇区服务于移动站，并且确定移动站可能处于第二组中的至少一个扇区的通信范围。作为响应，当扫描导频信号时，第一服务系统指示移动台使用第二PN增量。此后，移动站可以使用第一PN增量来扫描导频信号以添加到其剩余集合，并且如果剩余集合不够大，则可以使用第二PN增量来扫描附加导频信号。

55. 发明申请

US20130028296A1 CHIP X2 CORRELATION HYPOTHESES USING CHIP X1 SAMPLES 审中-公开
标题翻译：使用芯片X1样品的芯片X2相关假设
公开(公告)号：US20130028296A1
公开(公告)日：2013-01-31
申请号：US13192003
申请日：2011-07-27
申请人： Aamod D. Khandekar , Dario Fertonani , Srikanth Gummadi
发明人： Aamod D. Khandekar , Dario Fertonani , Srikanth Gummadi
IPC分类号： H04B1/707
CPC分类号： H04B1/7075 , H04B2001/70724 , H04B2201/70707 , H04B2201/70713 , H04B2201/70727
摘要： A UE may store received samples of a wireless signal at cx1 to reduce memory usage, but then may correlate those samples with cx2 timing hypotheses to improve performance. The received sequence is resampled at cx2 instead of cx1. The UE still performs the correlation of the cx2 timing hypotheses for the performance gain, but the reference waveform is resampled with cx2 time offset. A Fast Fourier Transform (FFT) may be taken of the received and reference waveforms. In the frequency domain, resampling may be performed by multiplying the FFT of the reference waveform by a phase ramp—a pointwise multiplication in the frequency domain with a constant magnitude sequence whose phase varies linearly.
摘要翻译： UE可以以cx1存储无线信号的接收样本以减少存储器使用，但是然后可以将这些采样与cx2定时假设相关联以提高性能。接收的序列在cx2而不是cx1重采样。 UE仍然执行cx2定时假设与性能增益的相关性，但参考波形用cx2时间偏移重采样。可以对接收和参考波形进行快速傅里叶变换（FFT）。在频域中，重采样可以通过将参考波形的FFT乘以频域中的相位斜坡 - 点相乘乘以其相位线性变化的恒定幅度序列来执行。

56. 发明申请

US20040136443A1 Pre-phase error correction transmitter 有权
标题翻译：前期误差校正发射机
公开(公告)号：US20040136443A1
公开(公告)日：2004-07-15
申请号：US10744821
申请日：2003-12-23
申请人： InterDigital Technology Corporation
发明人： John D. Kaewell
IPC分类号： H04B001/707
CPC分类号： H04L27/20 , H04B1/62 , H04B1/69 , H04B1/7097 , H04B1/711 , H04B2001/70724 , H04B2201/696 , H04B2201/709709 , H04L2027/0022
摘要： A wireless transmitter comprises an input configured to receive a data signal. A mixer mixes the data signal with a correction signal producing a corrected signal. The correction signal changes a phase in the data signal to compensate for a measured phase error at a desired receiver. A modulator modulates the corrected signal to radio frequency as a radio frequency signal. An antenna radiates the radio frequency signal.
摘要翻译：无线发射机包括被配置为接收数据信号的输入。混合器将数据信号与产生校正信号的校正信号混合。校正信号改变数据信号中的相位以补偿在期望的接收机处的测量的相位误差。调制器将校正的信号调制为射频，作为射频信号。天线辐射射频信号。

57. 发明授权

US06628701B2 Method and apparatus for reducing spread spectrum noise 有权
标题翻译：降低扩频噪声的方法和装置
公开(公告)号：US06628701B2
公开(公告)日：2003-09-30
申请号：US09443864
申请日：1999-11-19
申请人： Daniel Yellin
发明人： Daniel Yellin
IPC分类号： H04B1707
CPC分类号： H04J13/0048 , H04B1/7115 , H04B2001/70724
摘要： Apparatus and a method for receiving spread-spectrum signals is provided. The method includes the steps of detecting a noisy user signal from a spread-spectrum signal including at least a first user signal (including data therein) and at least one pilot signal, and removing an interference effect of the pilot signal on the first user signal from the noisy user signal thereby to create a noise reduced user signal.
摘要翻译：提供了用于接收扩频信号的装置和方法。该方法包括以下步骤：从包括至少第一用户信号（包括其中的数据）和至少一个导频信号的扩频信号中检测噪声用户信号，以及消除导频信号对第一用户信号的干扰效应从噪声用户信号中产生噪声降低的用户信号。

58. 发明授权

US06587499B2 Base station which uses pre-rotation before transmission 有权
公开(公告)号：US06587499B2
公开(公告)日：2003-07-01
申请号：US10077632
申请日：2002-02-15
申请人： John D. Kaewell
发明人： John D. Kaewell
IPC分类号： H04B169
CPC分类号： H04L27/20 , H04B1/62 , H04B1/69 , H04B1/7097 , H04B1/711 , H04B2001/70724 , H04B2201/696 , H04B2201/709709 , H04L2027/0022
摘要： The present invention is an apparatus for reducing transmission errors by a base station when transmitting a communication signal. An RF communication signal is received at the base station and analyzed for errors. A correction signal is then generated based upon the analysis. Prior to transmission of the communication signal from the base station, the communication signal is corrected using the correction signal.

59. 发明申请

US20020094020A1 METHOD AND APPARATUS FOR REDUCING SPREAD SPECTRUM NOISE 有权
标题翻译：减少传播频谱噪声的方法和装置
公开(公告)号：US20020094020A1
公开(公告)日：2002-07-18
申请号：US09443864
申请日：1999-11-19
发明人： DANIEL YELLIN
IPC分类号： H04K001/00
CPC分类号： H04J13/0048 , H04B1/7115 , H04B2001/70724
摘要： Apparatus and a method for receiving spread-spectrum signals is provided. The method includes the steps of detecting a noisy user signal from a spread-spectrum signal including at least a first user signal (including data therein) and at least one pilot signal, and removing an interference effect of the pilot signal on the first user signal from the noisy user signal thereby to create a noise reduced user signal.
摘要翻译：提供了用于接收扩频信号的装置和方法。该方法包括以下步骤：从包括至少第一用户信号（包括其中的数据）和至少一个导频信号的扩频信号中检测噪声用户信号，以及消除导频信号对第一用户信号的干扰效应从噪声用户信号中产生噪声降低的用户信号。

60. 发明申请

US20020075948A1 User equipment which uses pre-rotation before transmission 有权
标题翻译：传输前使用预旋转的用户设备
公开(公告)号：US20020075948A1
公开(公告)日：2002-06-20
申请号：US10077634
申请日：2002-02-15
申请人： InterDigital Technology Corporation
发明人： John D. Kaewell
IPC分类号： H04L005/16
CPC分类号： H04L27/20 , H04B1/62 , H04B1/69 , H04B1/7097 , H04B1/711 , H04B2001/70724 , H04B2201/696 , H04B2201/709709 , H04L2027/0022
摘要： The present invention is an apparatus for reducing transmission errors by a user equipment (UE) when transmitting a communication signal. An RF communication signal is received at the UE and analyzed for errors. A correction signal is then generated based upon the analysis. Prior to transmission of the communication signal from the UE, the communication signal is corrected using the correction signal.
摘要翻译：本发明是一种用于在发送通信信号时减少用户设备（UE）的传输错误的装置。在UE处接收RF通信信号并分析错误。然后基于分析产生校正信号。在从UE发送通信信号之前，使用校正信号校正通信信号。

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