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1. 发明授权

US09673855B2 Adaptive transmission methods for multiple user wireless networks 有权
公开(公告)号：US09673855B2
公开(公告)日：2017-06-06
申请号：US14590540
申请日：2015-01-06
申请人： The DIRECTV Group, Inc.
发明人： Dale A. Branlund , Phillip L. Kelly , Matthew C. Bromberg
IPC分类号： G01R31/08 , H04B1/7103 , H04B1/7105 , H04L25/03 , H04W72/04 , H04W88/08
CPC分类号： H04B1/7103 , H04B1/71052 , H04B2201/709709 , H04L25/03114 , H04L2025/03414 , H04W72/0453 , H04W88/085
摘要： An exemplary wireless communication network that includes a base that communicates with remote units located in a cell of the network. The base concatenates information symbols with a preamble corresponding to a destination remote unit. One or more remote units communicating with the base each concatenates information symbols with a preamble corresponding to that remote unit. An adaptive receiver system for a base unit rapidly adapts optimal despreading weights for reproducing information symbols transmitted from multiple remote units. A transmitter system for a base unit concatenates information symbols with a preamble associated with a remote unit in the cell. An adaptive receiver system for a remote unit in a communication network rapidly adapts optimal weights for reproducing a signal transmitted to it by a specific base unit in the network.

2. 发明申请

US20170126443A1 Combined Low and High Frequency Continuous-Time Linear Equalizers 审中-公开
公开(公告)号：US20170126443A1
公开(公告)日：2017-05-04
申请号：US14925720
申请日：2015-10-28
申请人： Futurewei Technologies, Inc.
发明人： Liang Gu , Yuming Cao , Yen Dang , Gong Lei , Hungyi Lee , Yifan Gu , Mamatha Deshpande , Shou-Po Shih , Yan Duan
IPC分类号： H04L25/03 , H03F3/45 , H03F3/193 , H04B10/69
CPC分类号： H04L25/03878 , H03F3/193 , H03F3/45179 , H03F3/45197 , H03F2200/451 , H03F2203/45488 , H04B10/6971 , H04L25/03114 , H04L25/03159
摘要： An apparatus comprising an input port configured to receive an input signal propagated through a transmission link, wherein the transmission link comprises a low-frequency channel loss and a high-frequency channel loss, a continuous-time linear equalization (CTLE) circuit coupled to the input port and configured to produce an output signal according to the input signal by applying a first gain to the input signal at a first frequency to compensate the low-frequency loss, and applying a second gain to the input signal at a second frequency to compensate the high-frequency channel loss, and an output port coupled to the CTLE circuit and configured to output the output signal.

3. 发明授权

US09628301B2 Interference estimation for LTE receiver 有权
公开(公告)号：US09628301B2
公开(公告)日：2017-04-18
申请号：US14339214
申请日：2014-07-23
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Li Guo
IPC分类号： H04J11/00 , H04L25/02 , H04L25/03
CPC分类号： H04L25/021 , H04L25/0212 , H04L25/022 , H04L25/03 , H04L25/03114 , H04L25/03968 , H04L2025/03426
摘要： A method of estimating interference in a received signal is disclosed. The method includes receiving a plurality of subcarriers from a remote transmitter. Each of the subcarriers is multiplied by a control signal. At least two of the subcarriers are compared to produce a differential signal. Interference is estimated in response to the differential signal.

4. 发明授权

US09484967B1 Method for duty cycle distortion detection through decision feedback equalizer taps 有权
标题翻译：通过判决反馈均衡器抽头进行占空比失真检测的方法
公开(公告)号：US09484967B1
公开(公告)日：2016-11-01
申请号：US14681796
申请日：2015-04-08
申请人： Oracle International Corporation
发明人： Jianghui Su , Yan Yan , Jieda Li
IPC分类号： H04L25/08 , H04B1/10 , H04B17/24 , H04B17/21
CPC分类号： H04L25/08 , H04B17/21 , H04B17/24 , H04L25/03114 , H04L25/06 , H04L25/14
摘要： An embodiment includes a receiver circuit, a feedback circuit and a control circuit. The receiver circuit is configured to receive each data bit of a plurality of data bits. The feedback circuit is configured to measure a first interference level generated by a first data bit of a first subset of the plurality of data bits on a second data bit of the plurality of data bits to generate one of a first plurality of feedback values. The feedback circuit is also configured to measure a second interference level generated by a third data bit of a second subset of the plurality of data bits on a fourth data bit of the plurality of data bits to generate one of a second plurality of feedback values. The control circuit is configured to determine a duty cycle dependent upon a comparison of the first plurality to the second plurality.
摘要翻译：实施例包括接收器电路，反馈电路和控制电路。接收器电路被配置为接收多个数据位的每个数据位。反馈电路被配置为测量由多个数据位的第二数据位上的多个数据位的第一子集的第一数据位产生的第一干扰电平，以产生第一多个反馈值之一。反馈电路还被配置为测量由多个数据位的第四数据位上的多个数据位的第二子集的第三数据位产生的第二干扰电平，以产生第二多个反馈值之一。控制电路被配置为确定取决于第一多个到第二个的比较的占空比。

5. 发明授权

US09385895B2 Radio receiver in a wireless communications system 有权
标题翻译：无线电接收机在无线通信系统中
公开(公告)号：US09385895B2
公开(公告)日：2016-07-05
申请号：US12016629
申请日：2008-01-18
申请人： Carlo Luschi , Simon Walker , Steve Allpress , Philip Jones
发明人： Carlo Luschi , Simon Walker , Steve Allpress , Philip Jones
IPC分类号： H04L25/03 , H04L25/02
CPC分类号： H04L25/03114 , H04L25/0212 , H04L25/0222 , H04L2025/03566 , H04L2025/03726
摘要： Techniques are described for optimizing the processing facilities of a receiver in a wireless communication environment, taking into account processing performance set against the computing resources and/or power consumption required to obtain that processing performance. A radio receiver for a wireless communications system can include channel equalization means arranged to receive samples of an incoming signal and to generate an equalized output, said channel equalization means including means for processing said digital samples in accordance with an equalizer algorithm. The receiver includes means for estimating parameters of a channel over which the incoming signal has been transmitted. The receiver can also include means for selecting from a plurality of equalizer algorithms an equalizer algorithm for execution by the processing means based on at least one said estimated channel parameter. Related methods and algorithms are described. Related computer program products are also described.
摘要翻译：描述了在无线通信环境中优化接收机的处理设施的技术，考虑到针对计算资源设置的处理性能和/或获得该处理性能所需的功耗。用于无线通信系统的无线电接收机可以包括被设置为接收输入信号的采样并产生均衡输出的信道均衡装置，所述信道均衡装置包括用于根据均衡器算法处理所述数字样本的装置。接收机包括用于估计传入信号已被发送的信道的参数的装置。接收机还可以包括用于从多个均衡器算法中选择用于由处理装置基于至少一个所述估计的信道参数执行的均衡器算法的装置。描述相关的方法和算法。还描述了相关的计算机程序产品。

6. 发明申请

US20160192210A1 Interference Rejection Based Maximum SINR Pre-Filtering For Multiuser Detection In An LTE Uplink 有权
标题翻译：在上行链路中进行多用户检测的基于干扰抑制的最大SINR预滤波
公开(公告)号：US20160192210A1
公开(公告)日：2016-06-30
申请号：US14583079
申请日：2014-12-24
申请人： Collision Communications, Inc.
发明人： Brandon Hombs , Sayak Bose
IPC分类号： H04W24/02 , H04L25/03
CPC分类号： H04L25/03006 , H04L25/021 , H04L25/03114
摘要： Methods and systems for applying a multi-path, maximum SINR, pre-processing interference rejection filter to an interference-limited signal received from a plurality of users in a wireless network operating according to the Long Term Evolution (“LTE”) standard includes receiving raw data, including training data from a plurality of users, selecting at least one modeled user, subtracting a contribution of the modeled user(s) from the training data to form a residual training signal, forming an interference rejection covariance matrix from the residual training signal, whitening the raw data using the interference rejection covariance matrix, and equalizing the whitened received data. In embodiments, an estimated contribution of a subset of the modeled users is subtracted from the raw data for filtering in a subsequent turbo loop. The subset can be selected based on an estimated post-combined SINR, an estimated outage capacity, or an estimated multiuser efficiency of the received data.
摘要翻译：用于将多路径最大SINR预处理干扰抑制滤波器应用于在根据长期演进（“LTE”）标准操作的无线网络中从多个用户接收的干扰受限信号的方法和系统包括接收原始数据，包括来自多个用户的训练数据，选择至少一个建模的用户，从训练数据中减去所建模的用户的贡献以形成残余训练信号，从剩余训练中形成干扰排除协方差矩阵信号，使用干扰抑制协方差矩阵对原始数据进行白化，并均衡白化的接收数据。在实施例中，从原始数据中减去建模用户的子集的估计贡献，以便在随后的turbo循环中进行过滤。可以基于估计的后组合SINR，估计中断容量或所接收数据的估计的多用户效率来选择该子集。

7. 发明申请

US20150215139A1 DYNAMIC TASK SCHEDULING FOR MULTI-RECEIVE-PATH EQUALIZER 有权
标题翻译：用于多收线路均衡器的动态任务调度
公开(公告)号：US20150215139A1
公开(公告)日：2015-07-30
申请号：US14344474
申请日：2013-02-20
申请人： SHANGHAI MOBILEPEAK SEMICONDUCTOR CO., LTD.
发明人： Feng Wan , Weiping Xu , Yuan Li , Qiuzhen Zou
IPC分类号： H04L25/03
CPC分类号： H04L25/03891 , H04L25/03 , H04L25/03114 , H04L2025/03426 , H04L2025/03681 , H04L2025/03745 , H04L2025/0377
摘要： Dynamically scheduling multi-receive-path signal equalizer tasks. An estimated maximum Doppler frequency and an estimated delay spread of a particular wireless communications channel may be determined at a particular time. A particular task queue format and a particular predictor model order update period may be identified based on the estimated maximum Doppler frequency and delay spread. A particular predictor model order update rate may be selected based on the identified particular equalizer task queue format. A plurality of task control signals may be generated based on the particular task queue format, the particular predictor model order-update period, and the particular predictor model order-search range, to control equalizer coefficient generation within a particular time period.
摘要翻译：动态调度多接收路径信号均衡器任务。可以在特定时间确定特定无线通信信道的估计的最大多普勒频率和估计的延迟扩展。可以基于估计的最大多普勒频率和延迟扩展来识别特定任务队列格式和特定预测器模型顺序更新周期。可以基于所识别的特定均衡器任务队列格式来选择特定预测器模型订单更新速率。可以基于特定任务队列格式，特定预测器模型顺序更新周期和特定预测器模型顺序搜索范围来生成多个任务控制信号，以在特定时间段内控制均衡器系数生成。

8. 发明授权

US09059874B2 Switched continuous time linear equalizer with integrated sampler 有权
标题翻译：带集成采样器的开关连续时间线性均衡器
公开(公告)号：US09059874B2
公开(公告)日：2015-06-16
申请号：US13962900
申请日：2013-08-08
申请人： Marvell World Trade Ltd.
发明人： Sasan Cyrusian
IPC分类号： H03H7/30 , H04L27/01 , H04L25/03 , H03F3/45
CPC分类号： H04L27/01 , H03F3/45201 , H03F2203/45494 , H04L25/03114 , H04L25/03248
摘要： An apparatus includes an input, an output, an equalizer configured to receive an input signal at the input and to output an output signal for the output, and a reset block coupled to the equalizer and the output. The reset block is configured to pull the output signal at the output toward a bias voltage level based on a reset signal.
摘要翻译：一种装置包括输入端，输出端，均衡器，被配置为在输入端接收输入信号并输出输出信号，以及耦合到均衡器和输出端的复位块。复位块被配置为基于复位信号将输出端处的输出信号拉向偏置电压电平。

9. 发明授权

US08941472B2 Methods for recovering RFID data based upon probability using an RFID receiver 有权
标题翻译：基于使用RFID接收机的概率来恢复RFID数据的方法
公开(公告)号：US08941472B2
公开(公告)日：2015-01-27
申请号：US13761113
申请日：2013-02-06
申请人： Mojix, Inc.
发明人： Ramin Sadr
IPC分类号： G06K7/01 , H04L25/03 , H04L27/02 , H04L1/00 , H03M13/29 , H03M13/00 , H04L1/08 , H04L27/10 , H04L25/06 , G06K7/00 , H04L25/02 , H03M13/39 , H03M13/09
CPC分类号： G06K7/10009 , G06K7/0008 , G06K7/01 , H03M13/098 , H03M13/2957 , H03M13/3905 , H03M13/6331 , H04L1/0041 , H04L1/005 , H04L1/006 , H04L1/0065 , H04L1/08 , H04L25/0242 , H04L25/03012 , H04L25/03114 , H04L25/03222 , H04L25/067 , H04L27/02 , H04L27/10
摘要： RFID data signals from RFID tags may be recovered by determining the probabilities of transitions between data states between a series of a pairs of signal samples using a set of predetermined probabilities related to data, timing, baud rate and/or phase variables affecting the received signal and processing those determined probabilities to determine the sequence of such transitions that has the highest probability of occurrence. A second set of predetermined probabilities related to transitions in the opposite direction may be used to sequence in a reverse direction. The determination of the sequence representing the RFID tag data may be iterated in both directions until further iterations do not change the determined probabilities.
摘要翻译：可以通过使用与影响接收信号的数据，定时，波特率和/或相位变量相关的一组预定概率来确定一系列信号样本之间的数据状态之间的转换概率来恢复来自RFID标签的RFID数据信号并且处理这些确定的概率以确定具有最高发生概率的这种转换的序列。可以使用与相反方向上的转变相关的第二组预定概率来反向排列。代表RFID标签数据的序列的确定可以在两个方向上迭代，直到进一步的迭代不改变所确定的概率。

10. 发明授权

US08724755B2 Receiving apparatus and receiving method 有权
标题翻译：接收装置和接收方法
公开(公告)号：US08724755B2
公开(公告)日：2014-05-13
申请号：US13237080
申请日：2011-09-20
申请人： Toshiyuki Nakanishi , Daisuke Takeda , Tatsuhisa Furukawa
发明人： Toshiyuki Nakanishi , Daisuke Takeda , Tatsuhisa Furukawa
IPC分类号： H03D1/06 , H03D11/04 , H03K5/01 , H03K6/04 , H04B1/10 , H04L1/00 , H04L25/08
CPC分类号： H04L25/03114 , H04L25/0202
摘要： A receiving apparatus receives a digital modulation signal. The receiving apparatus has a receiving part for down-converting the digital modulation signal to a baseband signal and to obtain channel estimates, a channel estimation part for estimating a multi-path channel, a first replica generation part for generating a first replica, based on the channel estimates obtained by the channel estimation part, a first replica removal part for removing the first replica from a target frame in the baseband signal, a nulling part for forcefully nulling he baseband signal for at least a portion of the time period where an inter-frame interference occurs due to a delay wave having a delay time longer than the known signal, and a cyclic-addition part for performing cyclic-addition between a front side portion and a rear side portion in the target frame, including the portion nulled by the nulling part.
摘要翻译：接收装置接收数字调制信号。接收装置具有接收部分，用于将数字调制信号下变频为基带信号并获得信道估计，用于估计多径信道的信道估计部分，用于生成第一副本的第一副本生成部分，基于由信道估计部分获得的信道估计，用于从基带信号中的目标帧中去除第一副本的第一副本去除部分，用于在时间段的至少一部分强制将其基带信号强制归零的归零部分，由于具有比已知信号更长的延迟时间的延迟波而发生帧干扰，以及用于在目标帧中的前侧部分和后侧部分之间执行循环加法的循环加法部分，包括被零归零部分。

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