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公开(公告)号：US09136979B2
公开(公告)日：2015-09-15
申请号：US14396089
申请日：2013-04-23
申请人： NEC CORPORATION
发明人： Norifumi Kamiya , Eisaku Sasaki
CPC分类号： H04L1/0036 , H04L1/0045 , H04L27/0014 , H04L27/22 , H04L27/3818 , H04L27/3836 , H04L2027/0024 , H04L2027/0046 , H04L2027/0061 , H04L2027/0067 , H04L2027/0087
摘要： The present invention provides a carrier wave reproduction device in which bit-error characteristics are improved without decreasing transmission capacity. The carrier wave reproduction device is equipped with an interpolation filter that estimates a phase error for a received symbol on the basis of a pilot symbol included in the received symbol, a first phase rotation machine that rotates a phase of the received symbol in response to the phase error estimated by the interpolation filter and then outputs the rotated symbol as a first output symbol, a phase error compensating unit that compensates for the phase error remaining in the first output symbol and then outputs the result of the compensation as a second output symbol, a QAM symbol demapping unit that calculates both a first bit string corresponding to the first output symbol and a second bit string corresponding to the second output signal, and an error correction decoder which performs error correction on the bit error in the first bit string and outputs the result. The phase error compensating unit refers to the first bit string after error correction has been performed thereon and then compensates for the phase error remaining in the first output symbol.
摘要翻译： 本发明提供一种在不降低传输容量的情况下提高误码特性的载波再现装置。 载波再现装置配备有内插滤波器，其基于包括在接收符号中的导频符号来估计接收符号的相位误差，第一相位旋转机器，响应于所接收的符号旋转接收符号的相位 相位误差，然后输出旋转符号作为第一输出符号;相位误差补偿单元，补偿第一输出符号中剩余的相位误差，然后输出补偿结果作为第二输出符号， QAM符号解映射单元，其计算与第一输出符号对应的第一比特串和对应于第二输出信号的第二比特串;以及纠错解码器，对第一比特串中的比特错误进行纠错，并输出 结果。 相位误差补偿单元是在其上执行纠错之后的第一位串，然后补偿第一输出符号中剩余的相位误差。
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公开(公告)号：US09048964B2
公开(公告)日：2015-06-02
申请号：US13718867
申请日：2012-12-18
申请人： Deere & Company
IPC分类号： H04B1/7085 , H04J3/00 , G01S19/30
CPC分类号： H04J3/00 , G01S19/30 , H04B1/7085 , H04L27/00 , H04L27/0014 , H04L2027/0026 , H04L2027/0057 , H04L2027/0087
摘要： A first signal generator is arranged to generate a first signal. A compensating null code circuit is configured to provide a null code. A multiplexer is capable of multiplexing the first signal and the null code consistent with a predetermined time sequence for expression of the null code in a produced precursor signal. A ranging code generator is arranged for generating a ranging code. A mixer is capable of accepting the ranging code and the precursor signal and outputting a locally generated reference signal. After down-conversion and digitization of the received composite signal, the code correlator can correlate the digital received composite signal to the locally generated reference signal to decode at least a first portion of the received composite signal, while leaving a second portion of the received composite signal undecoded.
摘要翻译： 第一信号发生器被布置成产生第一信号。 补偿空代码电路被配置为提供空代码。 多路复用器能够对与产生的前驱信号中的空码进行表示的预定时间序列一致地复用第一信号和空码。 测距码发生器被安排用于产生测距码。 混频器能够接受测距码和前驱信号并输出本地产生的参考信号。 在对所接收的复合信号进行下转换和数字化之后，码相关器可以将数字接收复合信号与本地生成的参考信号相关，以对接收的复合信号的至少第一部分进行解码，同时留下接收的复合信号的第二部分 信号未解码。
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公开(公告)号：US20150092870A1
公开(公告)日：2015-04-02
申请号：US14040690
申请日：2013-09-29
申请人： Harmonic, Inc.
发明人： Ariel Zaltsman
CPC分类号： H04L27/16 , H04L27/26 , H04L27/263 , H04L27/2631 , H04L27/2633 , H04L2027/0018 , H04L2027/0087
摘要： A method that includes providing to multiple inverse fast Fourier transform (IFFT) and polyphase circuits multiple baseband channels so that different IFFT and polyphase circuits receive different sets of baseband channels; applying IFFT operations and the polyphase filtering operations by the multiple IFFT and polyphase circuits to provide multiple converted channels; wherein different IFFT and polyphase circuits output different sets of converted channels that at least partially populate different IFFT grids that comprise different frequency bins; wherein frequency bins of a same IFFT grid of the different IFFT grids are spaced apart from each other by a first spacing; frequency shifting one or more sets of the converted channels to provide an output set of sub-channels; wherein the output set of sub-channels at least partially populates an output frequency grid in which output sub-channels originating from different sets of converted channels are of interleaving frequencies and in which the spacing between adjacent output frequency bins is smaller than the spacing between frequency bins of each IFFT grid; and combining the sub-channels of the output set of sub-channels to provide an interleaved output channel.
摘要翻译： 一种方法，其包括向多个快速傅立叶逆变换（IFFT）和多相电路提供多个基带信道，使得不同的IFFT和多相电路接收不同的基带信道集合; 通过多个IFFT和多相电路应用IFFT操作和多相滤波操作以提供多个转换的信道; 其中不同的IFFT和多相电路输出不同的转换通道组，其至少部分地填充包括不同频率仓的不同IFFT网格; 其中所述不同IFFT格栅的相同IFFT网格的频率仓彼此间隔开第一间隔; 对一个或多个转换的信道进行频移以提供子信道的输出集合; 其中所述输出子信道组至少部分地填充输出频率网格，其中源自不同转换信道组的输出子信道具有交织频率，并且其中相邻输出频率仓之间的间隔小于频率之间的间隔 每个IFFT网格的仓; 并且组合子信道的输出集合的子信道以提供交织的输出信道。
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公开(公告)号：US20150085960A1
公开(公告)日：2015-03-26
申请号：US14396089
申请日：2013-04-23
申请人： NEC CORPORATION
发明人： Norifumi Kamiya , Eisaku Sasaki
CPC分类号： H04L1/0036 , H04L1/0045 , H04L27/0014 , H04L27/22 , H04L27/3818 , H04L27/3836 , H04L2027/0024 , H04L2027/0046 , H04L2027/0061 , H04L2027/0067 , H04L2027/0087
摘要： The present invention provides a carrier wave reproduction device in which bit-error characteristics are improved without decreasing transmission capacity. The carrier wave reproduction device is equipped with an interpolation filter that estimates a phase error for a received symbol on the basis of a pilot symbol included in the received symbol, a first phase rotation machine that rotates a phase of the received symbol in response to the phase error estimated by the interpolation filter and then outputs the rotated symbol as a first output symbol, a phase error compensating unit that compensates for the phase error remaining in the first output symbol and then outputs the result of the compensation as a second output symbol, a QAM symbol demapping unit that calculates both a first bit string corresponding to the first output symbol and a second bit string corresponding to the second output signal, and an error correction decoder which performs error correction on the bit error in the first bit string and outputs the result. The phase error compensating unit refers to the first bit string after error correction has been performed thereon and then compensates for the phase error remaining in the first output symbol.
摘要翻译： 本发明提供一种在不降低传输容量的情况下提高误码特性的载波再现装置。 载波再现装置配备有内插滤波器，其基于包括在接收符号中的导频符号来估计接收符号的相位误差，第一相位旋转机器，响应于所接收的符号旋转接收符号的相位 相位误差，然后输出旋转符号作为第一输出符号;相位误差补偿单元，补偿第一输出符号中剩余的相位误差，然后输出补偿结果作为第二输出符号， QAM符号解映射单元，其计算与第一输出符号对应的第一比特串和对应于第二输出信号的第二比特串;以及纠错解码器，对第一比特串中的比特错误进行纠错，并输出 结果。 相位误差补偿单元是在其上执行纠错之后的第一位串，然后补偿第一输出符号中剩余的相位误差。
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5.发明申请公开(公告)号：US20150078503A1
公开(公告)日：2015-03-19
申请号：US14551518
申请日：2014-11-24
发明人： Ryo Endo , Keisuke Ueda , Toshiya Uozumi
CPC分类号： H04L7/033 , H03K23/662 , H03L7/0992 , H04L27/0014 , H04L2027/0016 , H04L2027/0022 , H04L2027/0036 , H04L2027/0055 , H04L2027/0067 , H04L2027/0069 , H04L2027/0087
摘要： To reduce the influence of a spurious in a high-frequency signal processing device and a wireless communication system each provided with a digital type PLL circuit. In a digital type PLL circuit including a digital phase comparator unit, a digital low-pass filter, a digital control oscillator unit, and a multi-module driver unit (frequency divider unit), the clock frequency of a clock signal in the digital phase comparator unit is configured selectably among a plurality of options. The clock frequency is selected among frequencies which are integer multiples of a reference frequency, in accordance with which frequency band of a standard is to be set for an oscillation output signal of the digital control oscillator unit.
摘要翻译： 为了减少高频信号处理装置和各自配置有数字型PLL电路的无线通信系统中的杂散的影响。 在包括数字相位比较器单元，数字低通滤波器，数字控制振荡器单元和多模块驱动器单元（分频器单元）的数字型PLL电路中，数字相位中的时钟信号的时钟频率 比较器单元可选地配置在多个选项中。 根据为数字控制振荡器单元的振荡输出信号设定标准的哪个频带，选择作为参考频率的整数倍的频率的时钟频率。
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公开(公告)号：US20140241480A1
公开(公告)日：2014-08-28
申请号：US14342924
申请日：2012-09-10
申请人： ZTE (USA) INC.
发明人： Ying Shen , Andrey Kochetkov
CPC分类号： H04L25/03821 , H04B1/0483 , H04B1/74 , H04L7/0016 , H04L7/02 , H04L27/0014 , H04L2027/0022 , H04L2027/0067 , H04L2027/0087
摘要： A method is provided for synchronizing a first radio unit with a second radio unit associated with an all outdoor radios system, the method including: receiving, at the first radio unit and the second radio unit, respectively, a communication signal from a common communication source; receiving, at the first radio unit and the second radio unit, respectively, a reference signal from a common reference source; synchronizing the communication signal at each of the first radio unit and the second radio unit with the reference signal such that the each of the first radio unit and the second radio unit generates an output signal having substantially the same frequency and substantially the same phase; and transmitting the output signal from each of the first radio unit and the second radio unit to a remote receiver through an antenna.
摘要翻译： 提供了一种用于使第一无线电单元与与所有户外无线电系统相关联的第二无线电单元同步的方法，所述方法包括：在第一无线电单元和第二无线电单元处分别从公共通信源接收通信信号 ; 在第一无线电单元和第二无线电单元分别接收来自公共参考源的参考信号; 使用第一无线电单元和第二无线电单元中的每一个的通信信号与参考信号同步，使得第一无线电单元和第二无线电单元中的每一个产生具有基本上相同频率和基本相同相位的输出信号; 并且通过天线将来自第一无线电单元和第二无线电单元中的每一个的输出信号发送到远程接收器。
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公开(公告)号：US20140169434A1
公开(公告)日：2014-06-19
申请号：US13714530
申请日：2012-12-14
IPC分类号： H04L27/01
CPC分类号： H04L27/01 , H04L27/2647 , H04L27/3836 , H04L2027/0038 , H04L2027/0087
摘要： An approach is provided to mitigate phase noise by correcting common phase error and inter-carrier-interference in a received signal. The approach involves determining a received signal includes phase noise comprising at least a common phase error component and an inter-carrier-interference component. The approach also involves causing the common phase error to be corrected based on one or more pilot carriers. The approach further involves causing an estimate of a main signal component to be subtracted from the one or more pilot carriers. The approach additionally involves determining a sequence of estimated coefficients of a multiplicative phase noise sequence. The approach also involves causing the inter-carrier-inference to be corrected by processing the multiplicative phase noise sequence using the sequence of estimated coefficients. The approach further involves causing an equalized data signal to be output based on the corrected common phase error and the corrected inter-carrier-interference.
摘要翻译： 提供了一种通过校正接收信号中的公共相位误差和载波间干扰来减轻相位噪声的方法。 该方法包括确定接收信号包括至少包括公共相位误差分量和载波间干扰分量的相位噪声。 该方法还涉及基于一个或多个导频载波来校正公共相位误差。 该方法还包括导致从一个或多个导频载波减去主信号分量的估计。 该方法还涉及确定乘法相位噪声序列的估计系数序列。 该方法还涉及通过使用估计系数的序列处理乘法相位噪声序列来使得载波间推理被校正。 该方法进一步包括使得基于校正的公共相位误差和校正的载波间干扰来输出均衡的数据信号。
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8.发明授权Mechanism for reducing time away from packet switched operation in a single radio solution 有权在单个无线电解决方案中减少远离分组交换操作的时间的机制公开(公告)号：US08744518B2
公开(公告)日：2014-06-03
申请号：US13617135
申请日：2012-09-14
申请人： Jianxiong Shi , Robert W. Mayor , Li Su , Zhu Ji , Thanigaivelu Elangovan
发明人： Jianxiong Shi , Robert W. Mayor , Li Su , Zhu Ji , Thanigaivelu Elangovan
IPC分类号： H04M1/00
CPC分类号： H04L27/0014 , G01S19/03 , H04L2027/0016 , H04L2027/0024 , H04L2027/0065 , H04L2027/0087 , H04W48/18
摘要： A single radio wireless communications device is contemplated in which the user equipment (UE) operates according to more than one radio access technology. The UE may operate preferentially according to a first radio access technology, and may switch to a different radio access technology at predetermined intervals to check for incoming calls. An error unit within the UE may provide frequency error estimates to a GPS unit during operation according to the first radio access technology based upon signals received in the first radio access technology, unless any time spent in the different radio access technology is longer that a predetermined duration. In response to the predetermined duration being met, the error unit may provide the frequency error estimation to the GPS unit based upon signals received in the different radio access technology.
摘要翻译： 设想单个无线电无线通信设备，其中用户设备（UE）根据多于一种的无线电接入技术进行操作。 UE可以根据第一无线电接入技术优先操作，并且可以以预定间隔切换到不同的无线电接入技术，以检查呼入。 除非在不同无线电接入技术中花费的时间长于预定的时间，否则UE内的错误单元可以根据第一无线电接入技术在基于第一无线接入技术接收的信号的基础上向GPS单元提供频率误差估计 持续时间 响应于满足预定的持续时间，错误单元可以基于在不同无线电接入技术中接收的信号向GPS单元提供频率误差估计。
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公开(公告)号：US20140119361A1
公开(公告)日：2014-05-01
申请号：US13718867
申请日：2012-12-18
申请人： DEERE & COMPANY
IPC分类号： H04J3/00
CPC分类号： H04J3/00 , G01S19/30 , H04B1/7085 , H04L27/00 , H04L27/0014 , H04L2027/0026 , H04L2027/0057 , H04L2027/0087
摘要： A first signal generator is arranged to generate a first signal. A compensating null code circuit is configured to provide a null code. A multiplexer is capable of multiplexing the first signal and the null code consistent with a predetermined time sequence for expression of the null code in a produced precursor signal. A ranging code generator is arranged for generating a ranging code. A mixer is capable of accepting the ranging code and the precursor signal and outputting a locally generated reference signal. After down-conversion and digitization of the received composite signal, the code correlator can correlate the digital received composite signal to the locally generated reference signal to decode at least a first portion of the received composite signal, while leaving a second portion of the received composite signal undecoded.
摘要翻译： 第一信号发生器被布置成产生第一信号。 补偿空代码电路被配置为提供空代码。 多路复用器能够对与产生的前驱信号中的空码进行表示的预定时间序列一致地复用第一信号和空码。 测距码发生器被安排用于产生测距码。 混频器能够接受测距码和前驱信号并输出本地产生的参考信号。 在对所接收的复合信号进行下转换和数字化之后，码相关器可以将数字接收复合信号与本地生成的参考信号相关，以对接收的复合信号的至少第一部分进行解码，同时留下接收的复合信号的第二部分 信号未解码。
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10.发明授权Demodulation and decoding for frequency modulation (FM) receivers with radio data system (RDS) or radio broadcast data system (RBDS) 有权具有无线电数据系统（RDS）或无线电广播数据系统（RBDS）的调频（FM）接收机的解调和解码公开(公告)号：US08498349B2
公开(公告)日：2013-07-30
申请号：US12720688
申请日：2010-03-10
CPC分类号： H04L27/2272 , H04L1/0045 , H04L1/0057 , H04L27/233 , H04L2027/0067 , H04L2027/0085 , H04L2027/0087
摘要： Demodulation and decoding for frequency modulation (FM) receivers with radio data system (RDS) or radio broadcast data system (RBDS). An example of a method for processing a signal in a receiver includes quantizing a demodulated signal to generate bits in response to receipt of the demodulated signal. The method also includes grouping the bits into one or more blocks. The method further includes computing a syndrome for a block from the one or more blocks. Moreover, the method includes identifying error, corresponding to the syndrome, in the block based on type of demodulation. The type of demodulation includes a coherent demodulation and a differential demodulation. Furthermore, the method includes correcting the error in the block.
摘要翻译： 具有无线电数据系统（RDS）或无线电广播数据系统（RBDS）的频率调制（FM）接收机的解调和解码。 用于处理接收机中的信号的方法的示例包括量化解调信号以响应于接收到解调信号而产生位。 该方法还包括将比特分组成一个或多个块。 该方法还包括从一个或多个块计算块的综合征。 此外，该方法包括基于解调的类型来识别与块中相对应的错误。 解调的类型包括相干解调和差分解调。 此外，该方法包括校正块中的错误。
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