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1. 发明申请

US20190207794A1 SYSTEM AND METHOD FOR CONTROLLING COMBINED RADIO SIGNALS 审中-公开
公开(公告)号：US20190207794A1
公开(公告)日：2019-07-04
申请号：US16297566
申请日：2019-03-08
申请人： PlusN, LLC
发明人： John David Terry
IPC分类号： H04L27/26 , H04L5/00 , H04L25/02 , H04L12/707 , H04L27/36
CPC分类号： H04L27/2614 , H04J11/00 , H04L5/0007 , H04L5/001 , H04L5/0048 , H04L5/0053 , H04L25/0204 , H04L25/022 , H04L25/0224 , H04L25/0242 , H04L27/2607 , H04L27/2618 , H04L27/2621 , H04L27/2624 , H04L27/2626 , H04L27/2649 , H04L27/2655 , H04L27/2657 , H04L27/367 , H04L45/24 , H04W84/12
摘要： A method for controlling a combined waveform, representing a combination of at least two signals having orthogonal frequency multiplexed signal components, comprising: receiving information defining the at least two signals; transforming the information defining each signal to a representation having orthogonal frequency multiplexed signal components, such that at least one signal has at least two alternate representations of the same information, and combining the transformed information using the at least two alternate representations, in at least two different ways, to define respectively different combinations; analyzing the respectively different combinations with respect to at least one criterion; and outputting a respective combined waveform or information defining the waveform, representing a selected combination of the transformed information from each of the at least two signals selected based on the analysis.

2. 发明申请

US20180227157A1 PEAK-TO-AVERAGE POWER REDUCTION USING GUARD TONE FILTERING 审中-公开
公开(公告)号：US20180227157A1
公开(公告)日：2018-08-09
申请号：US15942614
申请日：2018-04-02
申请人： Texas Instruments Incorporated
发明人： Jaiganesh Balakrishnan , Sarma Sundareswara Gunturi , Pankaj Gupta , Indu Prathapan
IPC分类号： H04L27/26
CPC分类号： H04L27/2624
摘要： The disclosure provides a circuit. The circuit includes an IFFT (inverse fast fourier transform) block. The IFFT block generates a modulated signal in response to a data signal. A clip logic block is coupled to the IFFT block, and generates a clipped signal in response to the modulated signal. A first subtractor is coupled to the clip logic block and the IFFT block, and subtracts the modulated signal from the clipped signal to generate an error signal. A cyclic filter is coupled to the first subtractor, and filters the error signal to generate a filtered error signal. A second subtractor is coupled to the cyclic filter and the IFFT block. The second subtractor subtracts the filtered error signal from the modulated signal to generate a processed signal.

3. 发明申请

US20180198493A1 DISTRIBUTED ANTENNA SYSTEM INCLUDING CREST FACTOR REDUCTION MODULE DISPOSED AT OPTIMUM POSITION 审中-公开
公开(公告)号：US20180198493A1
公开(公告)日：2018-07-12
申请号：US15911736
申请日：2018-03-05
申请人： SOLiD, INC.
发明人： Hyoungho KIM , Doyoon KIM , Kwangnam SEO
IPC分类号： H04B7/022 , H04L27/26
CPC分类号： H04B7/022 , H04L27/2614 , H04L27/2624
摘要： A distributed antenna system includes a plurality of head-end units for each receiving mobile communication signals from at least one corresponding base station, a hub unit communicatively coupled to the plurality of head-end units, and a plurality of remote units communicatively coupled to the hub unit, wherein the hub unit configured to distribute the mobile communication signals received from each of the plurality of head-end units to the plurality of remote units, wherein each of the plurality of remote units is remotely disposed to transmit the distributed mobile communication signals to a terminal in service coverage, and wherein the hub unit includes a mixing processing stage configured to perform digital mixing processing on the mobile communication signals respectively received from the plurality of head-end units, and a crest factor reduction (CFR) module disposed posterior to the mixing processing stage, with respect to a signal transmission direction.

4. 发明授权

US09912387B2 Distributed antenna system including crest factor reduction module disposed at optimum position 有权
公开(公告)号：US09912387B2
公开(公告)日：2018-03-06
申请号：US15084749
申请日：2016-03-30
申请人： SOLiD, INC.
发明人： Hyoungho Kim , Doyoon Kim , Kwangnam Seo
IPC分类号： H04L27/26 , H04B7/022
CPC分类号： H04B7/022 , H04L27/2614 , H04L27/2624
摘要： A distributed antenna system includes a plurality of head-end units for each receiving mobile communication signals from at least one corresponding base station, a hub unit communicatively coupled to the plurality of head-end units, and a plurality of remote units communicatively coupled to the hub unit, wherein the hub unit configured to distribute the mobile communication signals received from each of the plurality of head-end units to the plurality of remote units, wherein each of the plurality of remote units is remotely disposed to transmit the distributed mobile communication signals to a terminal in service coverage, and wherein the hub unit includes a mixing processing stage configured to perform digital mixing processing on the mobile communication signals respectively received from the plurality of head-end units, and a crest factor reduction (CFR) module disposed posterior to the mixing processing stage, with respect to a signal transmission direction.

5. 发明授权

US09596114B2 Peak suppressing device and peak suppressing method 有权
标题翻译：峰值抑制装置和峰值抑制方法
公开(公告)号：US09596114B2
公开(公告)日：2017-03-14
申请号：US14761766
申请日：2013-12-04
申请人： NEC Corporation
发明人： Yoshiaki Doi
IPC分类号： H04L27/26 , H04B1/04 , H03H17/02
CPC分类号： H04L27/2614 , H03F3/24 , H03H17/0294 , H04B1/04 , H04B2001/0408 , H04B2201/70706 , H04L27/2624
摘要： A peak suppressing device (10) includes: a subtracting unit (11) that subtracts a predetermined threshold from an amplitude value of an input signal and generates a first peak signal; a multiplying unit (12) that multiplies the first peak signal by a weight coefficient and generates a second peak signal; a band limiting filter (13) that limits a band of the second peak signal, and generates a third peak signal; a subtracting unit (14) that subtracts the third peak signal from the input signal; and a weight coefficient generating unit (15) that generates the weight coefficient based on a value, the value being an amplitude value of the first peak signal divided by an amplitude value of a fourth peak signal generated when a convolution arithmetic operation is performed on by using at least a tap coefficient used in a center tap of the band limiting filter (13).
摘要翻译：峰值抑制装置（10）包括：减法单元，其从输入信号的振幅值中减去预定阈值，并产生第一峰值信号; 乘法单元（12），其将所述第一峰值信号乘以权重系数并产生第二峰值信号; 带限制滤波器（13），其限制所述第二峰值信号的频带，并产生第三峰值信号; 减法单元，从所述输入信号中减去所述第三峰值信号; 以及权重系数生成单元（15），其基于值来生成所述权重系数，所述值是所述第一峰值信号的振幅值除以当执行卷积算术运算时产生的第四峰值信号的振幅值，所述振幅值由使用在带限滤波器（13）的中心抽头中使用的抽头系数的至少一个。

6. 发明授权

US09497059B2 Method for performing peak clipping to multiple carrier waves and device thereof 有权
标题翻译：用于对多个载波进行峰值削波的方法及其装置
公开(公告)号：US09497059B2
公开(公告)日：2016-11-15
申请号：US14916204
申请日：2014-08-28
申请人： DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD
发明人： Jun Xiong , Yanhui He , Huarong Sun , Tao Duan , Jieli Wang , Ce Wang
IPC分类号： H04L27/26 , H04B1/04 , H04L5/00
CPC分类号： H04L27/2623 , H03F1/02 , H03F3/24 , H04B1/0475 , H04B2001/045 , H04L5/001 , H04L5/0092 , H04L27/2614 , H04L27/2624 , H04L27/2626
摘要： The disclosure discloses a method and device for performing peak clipping to multiple carrier waves, the method includes: according to carrier wave number of configured multiple carrier waves, signal bandwidth and occupied bandwidth of each carrier wave, obtaining total signal bandwidth and total occupied bandwidth of the corresponding carrier waves; according to the total signal bandwidth and the total occupied bandwidth of the multiple carrier waves, generating a digital filter with set order, and obtaining filter coefficient of the digital filter; taking the filter coefficient as a peak clipping coefficient and using the peak clipping coefficient to perform peak clipping to the peak-to-average ratio signals of the carrier waves. By the disclosure, the complexity of the generation of the peak clipping coefficient is simplified, the deterioration degree of EVM is reduced, and the distortion degree of signals is also reduced.
摘要翻译：本发明公开了一种对多载波进行峰值削波的方法和装置，该方法包括：根据配置的多载波的载波数，信号带宽和每个载波的占用带宽，获得总信号带宽和总占用带宽相应的载波; 根据总信号带宽和多载波总占用带宽，产生具有设置顺序的数字滤波器，并获得数字滤波器的滤波器系数; 将滤波器系数作为峰值削波系数，并使用峰值削波系数对载波的峰值平均比率信号执行峰值削波。通过该公开，简化了峰值削波系数的产生的复杂度，降低了EVM的劣化程度，并且信号的失真度也降低。

7. 发明授权

US09363123B2 Methods and apparatus for signal conditioning in OFDMA systems 有权
标题翻译： OFDMA系统中信号调理的方法和装置
公开(公告)号：US09363123B2
公开(公告)日：2016-06-07
申请号：US13413894
申请日：2012-03-07
申请人： Titus Lo , Xiaodong Li
发明人： Titus Lo , Xiaodong Li
IPC分类号： H04J11/00 , H04L27/26
CPC分类号： H04L27/2624
摘要： Methods and systems for conditioning an orthogonal frequency division multiplex (OFDM) signal are disclosed. The OFDM signal may be conditioned prior to transmission by a transmitter in an orthogonal frequency division multiple access (OFDMA) system operating on a channel with a plurality of subcarriers grouped into subchannels. The OFDM signal may be clipped based on a desired peak-to-average-power ratio (PAPR) to produce a clipped-off portion of the OFDM signal. The clipped-off portion of the OFDM signal may be transformed into the frequency domain to produce a frequency-domain signal. An in-band spectral shaping mask may be applied to subcarriers or subchannels of the frequency-domain signal within the channel to control the levels of distortion on the individual subcarriers or subchannels. The shaped frequency-domain signal is transformed into the time domain to produce a time-domain signal. A conditioned signal is produced for transmission by subtracting the time-domain signal from the OFDM signal.
摘要翻译：公开了用于调理正交频分复用（OFDM）信号的方法和系统。 OFDM信号可以在由具有分组为子信道的多个子载波的信道上操作的正交频分多址（OFDMA）系统中的发射机发送之前进行调节。可以基于期望的峰值 - 平均功率比（PAPR）来修剪OFDM信号，以产生OFDM信号的剪切部分。 OFDM信号的剪切部分可以被变换到频域以产生频域信号。带内频谱整形掩模可以应用于信道内的频域信号的子载波或子信道，以控制各个子载波或子信道上的失真电平。将成形的频域信号变换成时域以产生时域信号。通过从OFDM信号中减去时域信号，产生用于发送的条件信号。

8. 发明授权

US09313078B1 Pulse cancellation crest factor reduction with a low sampling rate 有权
标题翻译：脉冲消除波峰因数降低采样率低
公开(公告)号：US09313078B1
公开(公告)日：2016-04-12
申请号：US14682737
申请日：2015-04-09
申请人： Xilinx, Inc.
发明人： Kaushik Barman , Gregory C. Copeland
IPC分类号： H04K1/02 , H04L27/36 , H04L27/04 , H04L27/12
CPC分类号： H04L27/2624
摘要： A method relates generally to data transmission. In such a method, a peak detector detects a signal peak of an input signal exceeding a threshold amplitude. This detecting includes sampling the input signal at a sampling frequency to provide a sampled signal. The sampling frequency is in a range greater than a bandwidth frequency of a carrier signal used for providing the input signal and less than twice the bandwidth frequency. Samples of the sampled signal proximate to the signal peak are interpolated to provide a reconstructed peak. A cancellation pulse is applied by a cancellation pulse generator to the samples to reduce the signal peak. A version of the input signal is output after application of the cancellation pulse.
摘要翻译：一种方法一般涉及数据传输。在这种方法中，峰值检测器检测超过阈值振幅的输入信号的信号峰值。该检测包括以采样频率采样输入信号以提供采样信号。采样频率在大于用于提供输入信号的载波信号的带宽频率的范围内，并且小于带宽频率的两倍。插值到信号峰值附近的采样信号的样本被内插以提供重建的峰值。取消脉冲由消除脉冲发生器施加到样本以减小信号峰值。在应用取消脉冲之后输出输入信号的一个版本。

9. 发明申请

US20160080189A1 System and Method for Controlling Combined Radio Signals 审中-公开
标题翻译：用于控制组合无线电信号的系统和方法
公开(公告)号：US20160080189A1
公开(公告)日：2016-03-17
申请号：US14954326
申请日：2015-11-30
申请人： PlusN, LLC
发明人： John David Terry
IPC分类号： H04L27/26 , H04L5/00
CPC分类号： H04L27/2614 , H04J11/00 , H04L5/0007 , H04L5/001 , H04L5/0048 , H04L5/0053 , H04L25/0204 , H04L25/022 , H04L25/0224 , H04L25/0242 , H04L27/2607 , H04L27/2618 , H04L27/2621 , H04L27/2624 , H04L27/2626 , H04L27/2649 , H04L27/2655 , H04L27/2657 , H04L27/367 , H04L45/24 , H04W84/12
摘要： A method for controlling a combined waveform, representing a combination of at least two signals having orthogonal frequency multiplexed signal components, comprising: receiving information defining the at least two signals; transforming the information defining each signal to a representation having orthogonal frequency multiplexed signal components, such that at least one signal has at least two alternate representations of the same information, and combining the transformed information using the at least two alternate representations, in at least two different ways, to define respectively different combinations; analyzing the respectively different combinations with respect to at least one criterion; and outputting a respective combined waveform or information defining the waveform, representing a selected combination of the transformed information from each of the at least two signals selected based on the analysis.
摘要翻译：一种用于控制表示具有正交频分复用信号分量的至少两个信号的组合的组合波形的方法，包括：接收定义所述至少两个信号的信息; 将定义每个信号的信息变换为具有正交频分多路复用信号分量的表示，使得至少一个信号具有相同信息的至少两个交替表示，并且使用至少两个替代表示在至少两个不同的方式，分别定义不同的组合; 根据至少一个标准分析不同的组合; 以及输出定义波形的相应组合波形或信息，其表示基于所述分析选择的所述至少两个信号中的每一个的经变换信息的选定组合。

10. 发明申请

US20150372850A1 PEAK SUPPRESSION APPARATUS 有权
标题翻译：峰值抑制装置
公开(公告)号：US20150372850A1
公开(公告)日：2015-12-24
申请号：US14697897
申请日：2015-04-28
申请人： FUJITSU LIMITED
发明人： Tomoya Ota , HIROYOSHI ISHIKAWA , Kazuo Nagatani
IPC分类号： H04L27/26 , H04B15/00 , H04B1/04
CPC分类号： H04L27/2624
摘要： A peak suppression apparatus includes an acquiring unit that acquires a first signal represented by an amplitude waveform of a multicarrier signal, a generator that generates a second signal represented by a waveform sequentially connecting a plurality of peak points adjacent to one another in the first signal as a peak detection signal for the multicarrier signal, a detector that detects a peak value and a peak timing of the multicarrier signal by using the peak detection signal, and a suppressing unit that suppresses a peak of the multicarrier signal based on the peak value and the peak timing.
摘要翻译：峰值抑制装置包括获取单元，其获取由多载波信号的振幅波形表示的第一信号，生成器，其生成由在第一信号中将彼此相邻的多个峰值顺序连接的波形表示的第二信号，用于多载波信号的峰值检测信号，通过使用峰值检测信号来检测多载波信号的峰值和峰值定时的检测器，以及基于峰值抑制多载波信号的峰值的抑制单元，峰值时间

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