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公开(公告)号：US09641361B2
公开(公告)日：2017-05-02
申请号：US14542846
申请日：2014-11-17
Inventor： Seok Seo , Jinup Kim , Seung-Hwan Lee
CPC classification number: H04L25/08 , H04B1/0021 , H04L25/05
Abstract: Provided is a wireless signal receiver including: an analog-digital converter (ADC) converting an analog RF signal into a digital baseband signal; and a sub-sampling block dividing and processing the digital baseband signal into a first path signal and a second path signal, and extracting a complex baseband signal by using a relative sample delay difference between the first and second path signals, wherein the first path signal is a signal obtained by adjusting a sample delay and sampling rate of the digital baseband signal, and the second path signal is a signal obtained by filtering without adjusting the sampling rate of the digital baseband signal.
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公开(公告)号：US20170026972A1
公开(公告)日：2017-01-26
申请号：US15283948
申请日：2016-10-03
Applicant: CommScope Technologies LLC
Inventor： Thomas Kummetz , Fred William Phillips , Christopher Goodman Ranson , Van E. Hanson
CPC classification number: H04W72/0453 , H04B1/001 , H04L1/00 , H04L25/05 , H04L27/0002 , H04W72/02 , H04W72/0413 , H04W72/042 , H04W72/1263 , H04W88/085
Abstract: A telecommunications system is provided that includes a unit for communicating channelized digital baseband signals with remotely located units. The channelized digital baseband signals include call information for wireless communication. The unit includes a channelizer section and a transport section. The channelizer section can extract, per channel, the channelized digital baseband signals using channel filters and digital down-converters. The transport section can format the channelized digital baseband signals for transport together using a transport schedule unit for packetizing and packet scheduling the channelized digital baseband signals. A signal processing subsystem can control a gain of uplink digital baseband signals, independently, that are received from the remotely located units prior to summing the uplink digital baseband signals.
Abstract translation: 提供一种电信系统，其包括用于将具有远程定位单元的信道化数字基带信号进行通信的单元。 信道化数字基带信号包括用于无线通信的呼叫信息。 该单元包括通道化器部分和运输部分。 通道化器部分可以使用通道滤波器和数字下变频器，每通道提取通道化数字基带信号。 传输部分可以使用传输调度单元格式化信道化数字基带信号以一起传输，用于对信道化数字基带信号进行分组和分组调度。 信号处理子系统可以在对上行数字基带信号求和之前独立地控制从远程位置单元接收的上行链路数字基带信号的增益。
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公开(公告)号：US20170012767A1
公开(公告)日：2017-01-12
申请号：US14873410
申请日：2015-10-02
Applicant: Tempo Semiconductor, Inc.
Inventor： Darrell Eugene Tinker
CPC classification number: H04L25/05 , H03H17/0642
Abstract: A sample rate converter for an oversampled data stream develops interpolated samples at a first oversample rate, from samples at a second oversample rate; wherein the first oversample rate is a non-integer multiple of the second oversample rate. When the samples at the second oversample rate are changing state, at least two interpolated samples are generated or the interpolation is at least second order. When the sample at the second oversample rate is not changing state, the sample at the second oversample rate is passed substantially unchanged. In one embodiment of the invention, asynchronous sample rate conversion is performed, and the first oversample rate is a varying non-integer multiple of the second oversample rate.
Abstract translation: 用于过采样数据流的采样率转换器以第二过采样速率的样本以第一过采样速率开发内插采样; 其中所述第一过采样率是所述第二过采样率的非整数倍。 当第二过采样率的样本正在改变状态时，产生至少两个内插样本或者内插至少是二次。 当第二过采样率的样本不改变状态时，第二过采样率的样本基本上不变。 在本发明的一个实施例中，执行异步采样率转换，并且第一过采样率是第二过采样速率的变化的非整数倍。
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公开(公告)号：US20160363625A1
公开(公告)日：2016-12-15
申请号：US14985286
申请日：2015-12-30
Applicant: International Business Machines Corporation
Inventor： Simeon Furrer , Robert A. Hutchins , Jens Jelitto , Mark A. Lantz
IPC: G01R31/319 , H04L25/05
CPC classification number: G11B20/10259 , G01R31/31922 , G11B5/00813 , G11B5/00826 , G11B5/02 , G11B5/29 , G11B5/584 , G11B20/10037 , G11B20/10046 , H04L25/05
Abstract: A computer program product is provided for performing symbol timing recovery in a parallel recording channel system. The computer program product comprises a computer readable storage medium having program instructions embodied therewith. The program instructions are executable by a processor to cause the processor to receive a plurality of timing-error estimates for a plurality of read channels. Each of the timing-error estimates corresponds to one of the read channels. Also, the program instructions are executable by the processor to cause the processor to calculate a common phase based on the plurality of timing-error estimates. Moreover, the program instructions are executable by the processor to cause the processor to calculate a skew of a transducer array based on the plurality of timing-error estimates, and to calculate a different total phase estimate for each read channel based on the calculated common phase and the calculated skew of the transducer array.
Abstract translation: 提供了一种用于在并行记录通道系统中执行符号定时恢复的计算机程序产品。 计算机程序产品包括具有其中实施的程序指令的计算机可读存储介质。 程序指令可由处理器执行，以使处理器接收多个读取通道的多个定时误差估计。 每个定时误差估计对应于一个读通道。 此外，程序指令可由处理器执行，以使处理器基于多个定时误差估计来计算公共相位。 此外，程序指令可由处理器执行以使处理器基于多个定时误差估计来计算换能器阵列的偏斜，并且基于所计算的公共相位来计算每个读取通道的不同总相位估计 和计算出的换能器阵列的偏差。
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公开(公告)号：US09461869B2
公开(公告)日：2016-10-04
申请号：US14149215
申请日：2014-01-07
Applicant: FREESCALE SEMICONDUCTOR, INC.
Inventor： Roy Shor , Ori Goren , Avraham Horn
IPC: G06F13/28 , H04L29/08 , H04L27/34 , H04L25/02 , H04L27/32 , H04L25/05 , H04L27/12 , H04W88/08 , H04W24/02 , H04W28/06 , H04B1/00
CPC classification number: H04L29/08027 , G06F13/28 , H04L25/05 , H04L27/34
Abstract: A digital signal processor (300), compatible with the Common Public Radio Interface (CPRI), permits reading and writing of IQ data of antenna carriers which have two different sampling rates by using just two single sample rate DMA (Direct Memory Access) modules (306,313). The digital signal processor (300) is capable of processing data of different sampling rates on just one CPRI lane comprising one framer (302). This is achieved by incorporating a divider module (307) and a multiplexer module (314) between the framer (302) and system memory (309, 315). The processor (300) may also be configured so that single sampling rates can also be accommodated.
Abstract translation: 与普通公共无线电接口（CPRI）兼容的数字信号处理器（300）允许通过仅使用两个单采样率DMA（直接存储器访问）模块来读取和写入具有两个不同采样率的天线载波的IQ数据 306,313）。 数字信号处理器（300）能够在仅包括一个成帧器（302）的一个CPRI线路上处理不同采样率的数据。 这通过在成帧器（302）和系统存储器（309,315）之间并入分频器模块（307）和多路复用器模块（314）来实现。 处理器（300）也可以被配置为使得也可以容纳单个采样率。
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Patent Agency Ranking
6.发明授权公开(公告)号：US09432032B2
公开(公告)日：2016-08-30
申请号：US14522484
申请日：2014-10-23
Applicant: Marvell World Trade Ltd.
Inventor： Renaldi Winoto
IPC: H03L7/099
Abstract: A method comprises determining a reference ratio based on a first division ratio of a first phase-locked loop (PLL) and a second division ratio of a second PLL, and converting a first discrete sequence to a second discrete sequence based on a sequence of multiples of the reference ratio. The first and second PLLs operate under a locked condition and share a common reference oscillator. An apparatus includes comprises a clock generator including first and second phase-locked loops (PLLs) and configured to generate first and second clock signals, respectively, and a sample-rate converter configured to convert a first discrete sequence to a second discrete sequence based on a sequence of multiples of a reference ratio. The reference ratio is determined based on a first division ratio of the first PPL and a second division ratio of the second PLL.
Abstract translation: 一种方法包括基于第一锁相环（PLL）的第一分频比和第二PLL的第二分频比来确定参考比，并且基于多个序列将第一离散序列转换为第二离散序列 的参考比。 第一和第二PLL在锁定状态下工作并共享公共参考振荡器。 一种装置包括：时钟发生器，包括第一和第二锁相环（PLL），并且被配置为分别产生第一和第二时钟信号;以及采样率转换器，其被配置为将第一离散序列转换为基于 参考比的倍数序列。 参考比根据第一PPL的第一分频比和第二PLL的第二分频比来确定。
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公开(公告)号：US09379886B2
公开(公告)日：2016-06-28
申请号：US14793645
申请日：2015-07-07
Inventor： Sang-Kyun Kim , Mi-Jeong Park , Ik-Soo Eo
CPC classification number: H04L7/048 , H03H17/028 , H03H17/0628 , H04L25/05
Abstract: A sample rate converter and a method of converting a sample rate are disclosed herein. The sample rate converter includes a data delay unit, a clock rate conversion unit, a Lagrange polynomial filter unit, a resample position calculation unit, and a resample position compensation unit. The data delay unit delays signals in response to an input clock signal. The clock rate conversion unit converts the sample rate of the signals. The Lagrange polynomial filter unit performs a filtering function on the signals whose rate has been converted. The resample position calculation unit outputs the value (Dint, dfrac) of the resample position of the signals based on a set resample ratio value. The resample position compensation unit corrects the error value of the signals by applying the value (Dint, dfrac) to the signals, and outputs a final signal.
Abstract translation: 本文公开了采样率转换器和转换采样率的方法。 采样率转换器包括数据延迟单元，时钟速率转换单元，拉格朗日多项式滤波器单元，重采样位置计算单元和重采样位置补偿单元。 数据延迟单元响应输入时钟信号延迟信号。 时钟速率转换单元转换信号的采样率。 拉格朗日多项式滤波器单元对其速率已被转换的信号执行滤波功能。 重采样位置计算单元基于设置的重采样比值输出信号的采样位置的值（Dint，dfrac）。 重采样位置补偿单元通过对信号施加值（Dint，dfrac）来校正信号的误差值，并输出最终信号。
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公开(公告)号：US20150341089A1
公开(公告)日：2015-11-26
申请号：US14816231
申请日：2015-08-03
Applicant: COMMSCOPE TECHNOLOGIES LLC
Inventor： Thomas Kummetz , Van Hanson , Christopher G. Ranson
CPC classification number: H04L27/0002 , H04B7/04 , H04L25/05 , H04L27/28 , H04W88/085
Abstract: A telecommunications system is provided that can re-sample a digitized signal at a resample rate that is based on one or more factors to better utilize bandwidth. The factors can include the bandwidth of the signal that the digitized signal represents, the amount of bandwidth owned or used by the carrier, the full bandwidth of the designated RF band, the bandwidth of the serial link, the frame length of the serial link, the segmentation of the frames on the serial link, and the capability of the equipment at the receiving end of a serial link. The re-sampled signal can be transmitted to another unit that is remote to the unit transmitting the signal. The other unit can include a re-sampling device that restores the re-sampled signal to a digital signal that can be converted to an analog signal for wireless transmission.
Abstract translation: 提供一种电信系统，其可以以基于一个或多个因素的重采样速率重新采样数字化信号以更好地利用带宽。 这些因素可以包括数字信号表示的信号的带宽，载波拥有或使用的带宽量，指定RF频带的全带宽，串行链路的带宽，串行链路的帧长度， 串行链路上的帧的分段，以及串行链路的接收端的设备的能力。 重新采样的信号可以传输到远离发送信号的单元的另一个单元。 另一单元可以包括再采样装置，其将重新采样的信号恢复到数字信号，该数字信号可被转换成用于无线传输的模拟信号。
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公开(公告)号：US09130890B2
公开(公告)日：2015-09-08
申请号：US14047766
申请日：2013-10-07
Applicant: QUALCOMM Incorporated
Inventor： Stephen Jay Shellhammer , Patrick Stupar , Andrea Garavaglia
IPC: H04B10/50 , H04L12/911 , H04L5/00 , H04L25/05 , H04Q11/00
CPC classification number: H04L47/828 , H04L1/0041 , H04L5/0007 , H04L5/0046 , H04L12/413 , H04L12/46 , H04L25/05 , H04L2001/0096 , H04Q11/0067
Abstract: In a method of scheduling frames, a first channel of a plurality of channels is selected for a first frame. The first frame is sent across a media-independent interface to a physical-layer device for transmission on the first channel. A data rate of the media-independent interface is greater than a data rate of the physical-layer device for the first channel. After the first frame is sent across the media-independent interface, subsequent sending of frames for the first channel across the media-independent interface is disabled for a period of time that is based at least in part on rate adaption from the data rate of the media-independent interface to the data rate of the physical-layer device for the first channel.
Abstract translation: 在调度帧的方法中，为第一帧选择多个信道的第一信道。 第一帧通过媒体独立接口发送到物理层设备，以在第一信道上传输。 媒体无关接口的数据速率大于第一通道的物理层设备的数据速率。 在通过媒体独立接口发送第一帧之后，在与媒体无关的接口上的第一信道的帧的后续发送被禁用一段时间，该时间段至少部分地基于从数据速率 与媒体无关的接口，用于第一通道物理层设备的数据速率。
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公开(公告)号：US09130609B2
公开(公告)日：2015-09-08
申请号：US13814459
申请日：2011-10-19
Applicant: Thomas Kummetz , Van Hanson , Christopher G. Ranson
Inventor： Thomas Kummetz , Van Hanson , Christopher G. Ranson
CPC classification number: H04L27/0002 , H04B7/04 , H04L25/05 , H04L27/28 , H04W88/085
Abstract: A telecommunications system is provided that can re-sample a digitized signal at a resample rate that is based on one or more factors to better utilize bandwidth. The factors can include the bandwidth of the signal that the digitized signal represents, the amount of bandwidth owned or used by the carrier, the full bandwidth of the designated RF band, the bandwidth of the serial link, the frame length of the serial link, the segmentation of the frames on the serial link, and the capability of the equipment at the receiving end of a serial link. The re-sampled signal can be transmitted to another unit that is remote to the unit transmitting the signal. The other unit can include a re-sampling device that restores the re-sampled signal to a digital signal that can be converted to an analog signal for wireless transmission.
Abstract translation: 提供一种电信系统，其可以以基于一个或多个因素的重采样速率重新采样数字化信号以更好地利用带宽。 这些因素可以包括数字信号表示的信号的带宽，载波拥有或使用的带宽量，指定RF频带的全带宽，串行链路的带宽，串行链路的帧长度， 串行链路上的帧的分段，以及串行链路的接收端的设备的能力。 重新采样的信号可以传输到远离发送信号的单元的另一个单元。 另一单元可以包括再采样装置，其将重新采样的信号恢复到数字信号，该数字信号可被转换成用于无线传输的模拟信号。
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