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1. 发明授权

EP2698958B1 DIGITAL ANALOG PREDISTORTION PROCESSING APPARATUS, SIGNAL TRANSMISSION SYSTEM AND SIGNAL TRANSMISSION METHOD 有权
公开(公告)号：EP2698958B1
公开(公告)日：2018-12-05
申请号：EP11746864.5
申请日：2011-04-18
申请人： Huawei Technologies Co., Ltd.
发明人： YE, Siqing , WANG, Wei , ZHU, Erni , XU, Shaofeng
IPC分类号： H04L27/00 , H04L27/36 , H04L25/03 , H03F1/32 , H04B1/04 , H03F1/34 , H03F3/24
CPC分类号： H04L27/0002 , H03F1/3241 , H03F1/34 , H03F3/24 , H04B1/0475 , H04B2001/0425 , H04B2001/0433 , H04L27/367
摘要： A digital analog predistortion processing apparatus, a signal transmission system, and a signal transmission method are disclosed. A signal transmission system includes: a digital-to-analog converter, configured to perform digital-to-analog conversion on a digital signal to be transmitted; a reconstruction filter, configured to filter out a digital mirror in a signal output by the digital-to-analog converter after the digital-to-analog conversion, and output a low-frequency or intermediate-frequency analog signal; an up-converter, configured to up-convert the low-frequency or intermediate-frequency analog signal output by the reconstruction filter, and output a radio frequency signal; a digital analog predistortion apparatus, configured to perform, according to a predistortion coefficient, analog predistortion processing on the radio frequency signal output by the up-converter, and output a predistortion radio frequency signal; an amplifier, configured to amplify the predistortion radio frequency signal, and output a distortionless radio frequency signal; and a radio frequency filter, configured to perform radio frequency filtering on the distortionless radio frequency signal and transfer the distortionless radio frequency signal after the radio frequency filtering to an antenna for transmission. Solutions of embodiments of the present invention can reduce the high performance requirement of signal predistortion processing on components of the transmission system, thereby reducing the device cost.

2. 发明公开

EP3340477A1 A WIRELESS TRANSMITTER, A CIRCUIT, AND METHOD FOR DRIVER HARMONIC REDUCTION 有权转让
公开(公告)号：EP3340477A1
公开(公告)日：2018-06-27
申请号：EP16206693.0
申请日：2016-12-23
申请人： NXP B.V.
发明人： Arnold, Siegfried Hermann
IPC分类号： H04B1/04 , H03F1/32
CPC分类号： H04B1/0475 , B60R25/24 , H03F1/3247 , H03F3/24 , H03F2200/451 , H04B2001/0433
摘要： A wireless transmitter (200) includes: a digital signal generator (214) arranged to generate a digital signal for transmission (222); a digital-to-analog converter (262) arranged to convert the digital signal for transmission into analog form; and a non-ideal amplifier (264) arranged to amplify the analog signal for transmission. At least one harmonic reduction signal generator (218) is arranged to generate at least one digital harmonic reduction signal; and a summing junction (230) is arranged to add the digital signal for transmission (222) with the at least one harmonic reduction signal (220, 221) to form a combined signal, wherein the non-ideal amplifier amplifies the combined signal to form an analog output signal. An analog to digital converter (266) is arranged to convert the analog output signal (270) into a digital representation of the analog output signal (268). A controller (250) is coupled to the digital signal generator (214) and the at least one harmonic reduction signal generator (218) and arranged to: analyse the digital representation of the analog output signal to determine a harmonic content of the analog output signal; and cause the harmonic reduction signal generator (211, 213) to generate the at least one digital harmonic reduction signal (220, 221) such that it reduces at least one harmonic of the amplified analog signal for transmission output from the non-ideal amplifier (264).

3. 发明授权

EP3035625B1 CALIBRATING RF PATH DELAY AND IQ PHASE IMBALANCE FOR A POLAR TRANSMIT SYSTEM 有权转让
标题翻译：校准极化发射系统的RF路径延迟和IQ相位不平衡
公开(公告)号：EP3035625B1
公开(公告)日：2018-01-03
申请号：EP15194792.6
申请日：2015-11-16
申请人： Intel IP Corporation
发明人： BELITZER, Alexander , SOGL, Bernhard
IPC分类号： H04L27/36
CPC分类号： H04B17/104 , H04B1/0475 , H04B2001/0425 , H04B2001/0433 , H04H20/12 , H04L1/248 , H04L7/033 , H04L27/361 , H04L27/364 , H04W72/0473
摘要： A method of calibrating parameters for a polar transmitter (Polar TX) system includes receiving phase information derived from transmission information in a Polar TX for producing a radio frequency (RF) broadcast signal. An Inphase local oscillator (LO_I) signal and a quadrature phase local oscillator (LO_Q) signal are derived from a combination of a first signal and the phase information using a digital phase lock loop. A feedback receiver (FBR) receives the RF broadcast signal provided by the Polar TX. The LO_I signal and the LO_Q signal are mixed with the RF broadcast signal to obtain mixer output signals. RF path delay and IQ phase imbalance are concurrently determined as a function of the first signal and of the mixer output signals.

4. 发明公开

EP3249821A1 TRANSMITTER AND METHOD FOR A MULTICARRIER SYSTEM 有权
标题翻译：发射机和多载波系统的方法
公开(公告)号：EP3249821A1
公开(公告)日：2017-11-29
申请号：EP16001203.5
申请日：2016-05-27
申请人： Damm Cellular Systems A/S
发明人： DAMM, Hans
IPC分类号： H04B1/04
CPC分类号： H04B1/0475 , H04B2001/0425 , H04B2001/0433 , H04B2001/0441
摘要： A multicarrier-radio transmitter (1) has a digital signal processor (100) to produce a multicarrier signal at IF, and a transmit amplifier circuit (10) to amplify and transmit the multicarrier signal at RF. A feedback loop (11) of the transmit amplifier circuit (10) has a subtractor (5), an I/Q demodulator (20) in the forward path (12), a loop-filter system (30) in the forward path (12) at baseband, an I/Q modulator (40) in the forward path (12), a power amplifier (50) in the forward path (12), a pick-off node (60) to pick off the multicarrier RF signal, and a down converter (70) in the reverse path (13) to down-convert the picked-off multicarrier RF signal to IF.
摘要翻译：多载波无线电发射机（1）具有用于在IF处产生多载波信号的数字信号处理器（100）以及用于在RF处放大和发送多载波信号的发射放大器电路（10）。发射放大器电路（10）的反馈环路（11）具有减法器（5），正向路径（12）中的I / Q解调器（20），正向路径中的环路滤波器系统（30） 12），前向路径（12）中的I / Q调制器（40），前向路径（12）中的功率放大器（50），拾取节点（60），用于拾取多载波RF信号以及反向路径（13）中的下变频器（70），以将拾取的多载波RF信号下变频为IF。

5. 发明公开

EP3145140A4 NONLINEAR SYSTEM DISTORTION CORRECTION DEVICE AND METHOD 审中-公开
标题翻译： VORRICHTUNG UND VERFAHREN ZUR VERZERRUNGSKORREKTUR EINES NICHTLINEAREN SYSTEMS
公开(公告)号：EP3145140A4
公开(公告)日：2017-06-21
申请号：EP14894708
申请日：2014-11-05
申请人： ZTE CORP
发明人： WANG LEI , DAI ZHENGJIAN , PAN WEIMING , ZHANG ZHE , HUANG MEI
IPC分类号： H04L25/03 , H04B1/04
CPC分类号： H04B1/0475 , H03F3/24 , H04B2001/0408 , H04B2001/0433 , H04B2001/0491 , H04L25/03057
摘要： The present invention discloses an apparatus and method for nonlinear system distortion correction. The apparatus includes: apparatus for nonlinear system distortion correction including: a robustness signal source generator, arranged to generate a robustness signal provided to an adaptive device; the adaptive device, arranged to collect a main link signal output by a signal generator and a feedback signal returned by the main link signal via a feedback link, and generate a correction parameter according to the main link signal, the feedback signal and the robustness signal; and a pre-corrector, arranged to according to the correction parameter perform pre-correction processing on the main link signal output by the signal generator. The present invention ensures, by providing the robustness signal, that, a system will not bring the problem of unknowable abrupt change in power or abnormal output frequency spectrum, which is caused by the fact that the difference between a signal characteristic in a former configuration and a signal characteristic in a latter configuration is too large under various dynamic configurations after an actual link signal passes through a pre-distortion module, thereby improving the robustness of the system in the case of dynamic operation, and being able to satisfy various frequency band configuration requirements of operators and dynamic change requirements of telephone traffic in different regions.
摘要翻译：本发明公开了一种用于非线性系统失真校正的设备和方法。该设备包括：用于非线性系统失真校正的设备，包括：鲁棒性信号源生成器，被配置为生成提供给自适应设备的鲁棒性信号; 自适应装置，用于采集信号发生器输出的主链路信号和主链路信号经反馈链路返回的反馈信号，并根据主链路信号，反馈信号和鲁棒性信号生成校正参数 ; 以及预校正器，根据校正参数设置，对信号发生器输出的主链路信号进行预校正处理。本发明通过提供鲁棒性信号确保了系统不会带来功率不可预知的突变或输出频谱异常的问题，这是由于前一种配置中的信号特征与在实际的链路信号通过预失真模块之后，后一种配置中的信号特征在各种动态配置下过大，从而提高了系统在动态操作情况下的鲁棒性，并且能够满足各种频带配置运营商的要求和不同地区话务量的动态变化要求。

6. 发明公开

EP3158643A1 POWER AMPLIFIER PRE-DISTORTION SIGNAL GENERATOR USING AN ANALOG BASEBAND ENVELOPE FEEDBACK LOOP 审中-公开
标题翻译：使用模拟基带包络反馈环路的功率放大器预失真信号发生器
公开(公告)号：EP3158643A1
公开(公告)日：2017-04-26
申请号：EP15730453.6
申请日：2015-06-15
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： AXHOLT, Andreas
IPC分类号： H03F1/02 , H03F1/32 , H03F3/195 , H03F3/24
CPC分类号： H04B1/0475 , H03F1/0266 , H03F1/3223 , H03F1/3241 , H03F3/195 , H03F3/24 , H03F2200/102 , H03F2200/18 , H03F2200/336 , H03F2200/78 , H03F2201/3236 , H04B2001/0425 , H04B2001/0433
摘要： Presented are methods and apparatuses for maintaining a substantially constant gain and reducing gain compression (AM-AM distortion) of a power amplifier based on a pre-distortion signal generated from an analog, baseband envelope feedback loop.
摘要翻译：提出了用于基于从模拟，基带包络反馈回路生成的预失真信号来保持基本上恒定的增益并且降低功率放大器的增益压缩（AM-AM失真）的方法和装置。

7. 发明公开

EP2923444A2 LOW COMPLEXITY DIGITAL PREDISTORTION FOR CONCURRENT MULTI-BAND TRANSMITTERS 失效
标题翻译：数字预失真低复杂度用于同时多波段SENDER
公开(公告)号：EP2923444A2
公开(公告)日：2015-09-30
申请号：EP14734548.2
申请日：2014-05-02
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： LAPORTE, Pierre-Andre , CAO, Haiying
IPC分类号： H04B1/00 , H03F1/32 , H04B1/04 , H04B1/62
CPC分类号： H03F1/3241 , H03F1/3247 , H03F1/34 , H03F3/24 , H03F2200/111 , H04B1/0067 , H04B1/0475 , H04B1/0483 , H04B2001/0425 , H04B2001/0433
摘要： Systems and methods are disclosed for digital predistortion for a concurrent multi-band transmitter using a single adaptor and a same set of predistortion coefficients for separate digital predistorters for each band. In one embodiment, the single adaptor is configured to adaptively configure a set of predistortion coefficients based on a memory polynomial digital baseband model of the digital predistorters having a same set of predistortion coefficients for each of the digital predistorters. By using the same set of predistortion coefficients for the separate digital predistorters for each band, a complexity of the digital predistortion is substantially reduced.

8. 发明授权

EP2432130B1 SAW filter-less transmitter architecture 有权转让
标题翻译：发射机体系结构，而不的SAW滤波器
公开(公告)号：EP2432130B1
公开(公告)日：2015-07-08
申请号：EP11151393.3
申请日：2011-01-19
申请人： IMEC , Renesas Electronics Corporation
发明人： Giannini, Vito , Sano, Tomohiro , Ingels, Mark , Craninckx, Jan
IPC分类号： H04B1/04 , H04B1/00
CPC分类号： H04B1/0475 , H03F1/34 , H03F3/24 , H04B2001/0433

9. 发明公开

EP2308177A4 METHOD AND APPARATUS FOR REDUCING PEAK CURRENT VARIATION IN A RADIO 审中-公开
标题翻译：方法和装置用于在无线降低OFDM峰功率变化
公开(公告)号：EP2308177A4
公开(公告)日：2015-04-15
申请号：EP09800759
申请日：2009-06-24
申请人： MOTOROLA SOLUTIONS INC
发明人： NG CHIN WUN , YEOH CHEN KOK
IPC分类号： H04B1/04 , H03L7/08
CPC分类号： H04B1/0466 , H03F1/34 , H03F3/24 , H04B2001/0433

10. 发明公开

EP2816771A1 Receiver, transmitter, feedback device, transceiver and signal processing method 有权
标题翻译： SENDER UND SENDVERFAHREN
公开(公告)号：EP2816771A1
公开(公告)日：2014-12-24
申请号：EP14176872.1
申请日：2011-01-20
申请人： Huawei Technologies Co., Ltd.
发明人： Huang, Baoping
IPC分类号： H04L27/36 , H04B1/04 , H04L27/00
CPC分类号： H04L27/12 , H03F1/34 , H03F3/24 , H04B1/0475 , H04B2001/0433 , H04L27/14 , H04L27/26 , H04L27/364 , H04L27/368 , H04L2027/0016 , H04L2027/002
摘要： The present invention provides a receiver, a transmitter, a transmitter feedback device, a transceiver, a method for transmitting a multi-frequency band signal, a method for receiving a multi-frequency band signal, and a method for processing a transmitter feedback signal. The feedback device includes: a multi-channel frequency selection band-pass circuit, configured to receive a multi-frequency band feedback signal, and output a feedback signal of each frequency band in a multi-frequency band feedback signal in a time-division manner; a feedback local oscillator, configured to provide feedback local oscillation corresponding to each frequency band in a time-division manner; a mixer, configured to mix the feedback signal of each frequency band from the multi-channel frequency selection band-pass circuit and the feedback local oscillation corresponding to each frequency band from the feedback local oscillator, and output an intermediate frequency signal of each frequency band in a time-division manner. In the present invention, for a solution in which only one set of signal processing channels is used to process the signals of multiple frequency bands in the uplink, the downlink or both the uplink and downlink, the volume, power consumption, and cost do not increase significantly, and compared with the current multi-channel processing solution, the cost is reduced.
摘要翻译：本发明提供了一种接收机，发射机，发射机反馈装置，收发机，用于发送多频带信号的方法，接收多频带信号的方法以及用于处理发射机反馈信号的方法。反馈装置包括：多通道频率选择带通电路，被配置为接收多频带反馈信号，并且以时分方式在多频带反馈信号中输出每个频带的反馈信号 ; 反馈本地振荡器，被配置为以时分方式提供对应于每个频带的反馈本地振荡; 混频器，被配置为将来自所述多声道频率选择带通电路的每个频带的反馈信号和对应于来自所述反馈本地振荡器的每个频带的所述反馈本地振荡混频，并输出每个频带的中频信号以分时的方式。在本发明中，对于仅使用一组信号处理信道来处理上行链路中的多个频带的信号，下行链路或上行链路和下行链路两者的解决方案，音量，功耗和成本不显着增加，与目前的多渠道处理解决方案相比，成本降低。

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