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1.发明授权Method and system for baseband predistortion linearization in multi-channel wideband communication systems 有权多通道宽带通信系统中基带预失真线性化的方法和系统公开(公告)号：US09246731B2
公开(公告)日：2016-01-26
申请号：US14480285
申请日：2014-09-08
Applicant: Dali Systems Co. Ltd.
Inventor： Wan-Jong Kim , Kyoung Joon Cho , Jong Heon Kim , Shawn Patrick Stapleton
IPC: H03H7/30 , H04L27/26 , H03F1/32 , H03F3/24 , H04L25/03 , H04L27/36 , H04W24/02 , H04B1/04 , H04W24/04 , H04W40/00
CPC classification number: H04W40/02 , H03F1/3247 , H03F3/24 , H03F2200/336 , H03F2200/57 , H03F2201/3224 , H03F2201/3233 , H04B1/0475 , H04B7/022 , H04B2001/0425 , H04L25/03343 , H04L27/2618 , H04L27/362 , H04L2025/03414 , H04W24/02 , H04W24/04 , H04W40/00 , H04W72/04 , H04W72/0453
Abstract: An efficient baseband predistortion linearization method for reducing the spectral regrowth and compensating memory effects in wideband communication systems using effective multiplexing modulation technique such as wideband code division multiple access and orthogonal frequency division multiplexing is disclosed. The present invention is based on the method of piecewise pre-equalized lookup table based predistortion, which is a cascade of a lookup table predistortion and piecewise pre-equalizers.
Abstract translation: 公开了一种使用诸如宽带码分多址和正交频分复用之类的有效复用调制技术在宽带通信系统中减少频谱再生长和补偿存储器效应的有效的基带预失真线性化方法。 本发明基于基于分段预均衡查找表的预失真的方法，该预失真是查找表预失真和分段预均衡器的级联。
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公开(公告)号：US20180102747A1
公开(公告)日：2018-04-12
申请号：US15684580
申请日：2017-08-23
Applicant: Dali Systems Co. Ltd.
Inventor： Wan Jong Kim , Kyoung Joon Cho , Shawn Patrick Stapleton , Jong Heon Kim , Dali Yang
CPC classification number: H03F1/3247 , H03F1/3258 , H03F3/19 , H03F3/20 , H03F3/24 , H03F2200/129 , H03F2200/451 , H03F2201/3224 , H03F2201/3227 , H03F2201/3233
Abstract: A RF-digital hybrid mode power amplifier system for achieving high efficiency and high linearity in wideband communication systems is disclosed. The present invention is based on the method of adaptive digital predistortion to linearize a power amplifier in the RF domain. The power amplifier characteristics such as variation of linearity and asymmetric distortion of the amplifier output signal are monitored by the narrowband feedback path and controlled by the adaptation algorithm in a digital module. Therefore, the present invention could compensate the nonlinearities as well as memory effects of the power amplifier systems and also improve performances, in terms of power added efficiency, adjacent channel leakage ratio and peak-to-average power ratio. The present disclosure enables a power amplifier system to be field reconfigurable and support multi-modulation schemes (modulation agnostic), multi-carriers and multi-channels. As a result, the digital hybrid mode power amplifier system is particularly suitable for wireless transmission systems, such as base-stations, repeaters, and indoor signal coverage systems, where baseband I-Q signal information is not readily available.
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公开(公告)号：US20160269210A1
公开(公告)日：2016-09-15
申请号：US14991264
申请日：2016-01-08
Applicant: Dali Systems Co. Ltd.
Inventor： Wan-Jong Kim , Kyoung Joon Cho , Jong Heon Kim , Shawn Patrick Stapleton
CPC classification number: H04W40/02 , H03F1/3247 , H03F3/24 , H03F2200/336 , H03F2200/57 , H03F2201/3224 , H03F2201/3233 , H04B1/0475 , H04B7/022 , H04B2001/0425 , H04L25/03343 , H04L27/2618 , H04L27/362 , H04L2025/03414 , H04W24/02 , H04W24/04 , H04W40/00 , H04W72/04 , H04W72/0453
Abstract: An efficient baseband predistortion linearization method for reducing the spectral regrowth and compensating memory effects in wideband communication systems using effective multiplexing modulation technique such as wideband code division multiple access and orthogonal frequency division multiplexing is disclosed. The present invention is based on the method of piecewise pre-equalized lookup table based predistortion, which is a cascade of a lookup table predistortion and piecewise pre-equalizers.
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4.发明申请METHOD AND SYSTEM FOR BASEBAND PREDISTORTION LINEARIZATION IN MULTI-CHANNEL WIDEBAND COMMUNICATION SYSTEMS 有权多通道宽带通信系统中基带预测线性化的方法与系统公开(公告)号：US20150092830A1
公开(公告)日：2015-04-02
申请号：US14480285
申请日：2014-09-08
Applicant: Dali Systems Co. Ltd.
Inventor： Wan-Jong Kim , Kyoung Joon Cho , Jong Heon Kim , Shawn Patrick Stapleton
CPC classification number: H04W40/02 , H03F1/3247 , H03F3/24 , H03F2200/336 , H03F2200/57 , H03F2201/3224 , H03F2201/3233 , H04B1/0475 , H04B7/022 , H04B2001/0425 , H04L25/03343 , H04L27/2618 , H04L27/362 , H04L2025/03414 , H04W24/02 , H04W24/04 , H04W40/00 , H04W72/04 , H04W72/0453
Abstract: An efficient baseband predistortion linearization method for reducing the spectral regrowth and compensating memory effects in wideband communication systems using effective multiplexing modulation technique such as wideband code division multiple access and orthogonal frequency division multiplexing is disclosed. The present invention is based on the method of piecewise pre-equalized lookup table based predistortion, which is a cascade of a lookup table predistortion and piecewise pre-equalizers.
Abstract translation: 公开了一种使用诸如宽带码分多址和正交频分复用之类的有效复用调制技术在宽带通信系统中减少频谱再生长和补偿存储器效应的有效的基带预失真线性化方法。 本发明基于基于分段预均衡查找表的预失真的方法，该预失真是查找表预失真和分段预均衡器的级联。
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Patent Agency Ranking
公开(公告)号：US11418155B2
公开(公告)日：2022-08-16
申请号：US16592615
申请日：2019-10-03
Applicant: Dali Systems Co. Ltd.
Inventor： Wan Jong Kim , Kyoung Joon Cho , Shawn Patrick Stapleton , Jong Heon Kim , Dali Yang
Abstract: A RF-digital hybrid mode power amplifier system for achieving high efficiency and high linearity in wideband communication systems is disclosed. The present invention is based on the method of adaptive digital predistortion to linearize a power amplifier in the RF domain. The power amplifier characteristics such as variation of linearity and asymmetric distortion of the amplifier output signal are monitored by the narrowband feedback path and controlled by the adaptation algorithm in a digital module. Therefore, the present invention could compensate the nonlinearities as well as memory effects of the power amplifier systems and also improve performances, in terms of power added efficiency, adjacent channel leakage ratio and peak-to-average power ratio. The present disclosure enables a power amplifier system to be field reconfigurable and support multi-modulation schemes (modulation agnostic), multi-carriers and multi-channels. As a result, the digital hybrid mode power amplifier system is particularly suitable for wireless transmission systems, such as base-stations, repeaters, and indoor signal coverage systems, where baseband I-Q signal information is not readily available.
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公开(公告)号：US20140327481A1
公开(公告)日：2014-11-06
申请号：US14271881
申请日：2014-05-07
Applicant: DALI SYSTEMS CO., LTD.
Inventor： Wan Jong Kim , Kyoung Joon Cho , Shawn Patrick Stapleton , Jong Heon Kim , Dali Yang
CPC classification number: H03F1/3247 , H03F1/3258 , H03F3/19 , H03F3/20 , H03F3/24 , H03F2200/129 , H03F2200/451 , H03F2201/3224 , H03F2201/3227 , H03F2201/3233
Abstract: A RF-digital hybrid mode power amplifier system for achieving high efficiency and high linearity in wideband communication systems is disclosed. The present invention is based on the method of adaptive digital predistortion to linearize a power amplifier in the RF domain. The power amplifier characteristics such as variation of linearity and asymmetric distortion of the amplifier output signal are monitored by the narrowband feedback path and controlled by the adaptation algorithm in a digital module. Therefore, the present invention could compensate the nonlinearities as well as memory effects of the power amplifier systems and also improve performances, in terms of power added efficiency, adjacent channel leakage ratio and peak-to-average power ratio. The present disclosure enables a power amplifier system to be field reconfigurable and support multi-modulation schemes (modulation agnostic), multi-carriers and multi-channels. As a result, the digital hybrid mode power amplifier system is particularly suitable for wireless transmission systems, such as base-stations, repeaters, and indoor signal coverage systems, where baseband I-Q signal information is not readily available.
Abstract translation: 公开了一种用于在宽带通信系统中实现高效率和高线性度的RF数字混合模式功率放大器系统。 本发明基于对RF域中的功率放大器进行线性化的自适应数字预失真的方法。 诸如放大器输出信号的线性度和不对称失真的功率放大器特性由窄带反馈路径监测并由数字模块中的自适应算法控制。 因此，本发明可以补偿功率放大器系统的非线性和存储器效应，并且在功率附加效率，相邻信道泄漏比和峰均功率比方面也提高了性能。 本公开使得功率放大器系统能够是现场可重新配置的并且支持多调制方案（调制不可知），多载波和多信道。 结果，数字混合模式功率放大器系统特别适用于诸如基站，中继器和室内信号覆盖系统之类的无线传输系统，其中基带I-Q信号信息不容易获得。
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7.发明授权Method and system for baseband predistortion linearization in multi-channel wideband communications systems 有权多通道宽带通信系统中基带预失真线性化的方法和系统公开(公告)号：US08855234B2
公开(公告)日：2014-10-07
申请号：US13887133
申请日：2013-05-03
Applicant: Dali Systems Co. Ltd.
Inventor： Wan Jong Kim , Kyoung Joon Cho , Jong Heon Kim , Shawn Patrick Stapleton
CPC classification number: H04W40/02 , H03F1/3247 , H03F3/24 , H03F2200/336 , H03F2200/57 , H03F2201/3224 , H03F2201/3233 , H04B1/0475 , H04B7/022 , H04B2001/0425 , H04L25/03343 , H04L27/2618 , H04L27/362 , H04L2025/03414 , H04W24/02 , H04W24/04 , H04W40/00 , H04W72/04 , H04W72/0453
Abstract: An efficient baseband predistortion linearization method for reducing the spectral regrowth and compensating memory effects in wideband communication systems using effective multiplexing modulation technique such as wideband code division multiple access and orthogonal frequency division multiplexing is disclosed. The present invention is based on the method of piecewise pre-equalized lookup table based predistortion, which is a cascade of a lookup table predistortion and piecewise pre-equalizers.
Abstract translation: 公开了一种使用诸如宽带码分多址和正交频分复用之类的有效复用调制技术在宽带通信系统中减少频谱再生长和补偿存储器效应的有效的基带预失真线性化方法。 本发明基于基于分段预均衡查找表的预失真的方法，其是查找表预失真和分段预均衡器的级联。
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公开(公告)号：US09768739B2
公开(公告)日：2017-09-19
申请号：US14271881
申请日：2014-05-07
Applicant: DALI SYSTEMS CO. LTD.
Inventor： Wan Jong Kim , Kyoung Joon Cho , Shawn Patrick Stapleton , Jong Heon Kim , Dali Yang
CPC classification number: H03F1/3247 , H03F1/3258 , H03F3/19 , H03F3/20 , H03F3/24 , H03F2200/129 , H03F2200/451 , H03F2201/3224 , H03F2201/3227 , H03F2201/3233
Abstract: A RF-digital hybrid mode power amplifier system for achieving high efficiency and high linearity in wideband communication systems is disclosed. The present invention is based on the method of adaptive digital predistortion to linearize a power amplifier in the RF domain. The power amplifier characteristics such as variation of linearity and asymmetric distortion of the amplifier output signal are monitored by the narrowband feedback path and controlled by the adaptation algorithm in a digital module. Therefore, the present invention could compensate the nonlinearities as well as memory effects of the power amplifier systems and also improve performances, in terms of power added efficiency, adjacent channel leakage ratio and peak-to-average power ratio. The present disclosure enables a power amplifier system to be field reconfigurable and support multi-modulation schemes (modulation agnostic), multi-carriers and multi-channels. As a result, the digital hybrid mode power amplifier system is particularly suitable for wireless transmission systems, such as base-stations, repeaters, and indoor signal coverage systems, where baseband I-Q signal information is not readily available.
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9.发明申请METHOD AND SYSTEM FOR BASEBAND PREDISTORTION LINEARIZATION IN MULTI-CHANNEL WIDEBAND COMMUNICATION SYSTEMS 有权多通道宽带通信系统中基带预测线性化的方法与系统公开(公告)号：US20130315291A1
公开(公告)日：2013-11-28
申请号：US13887133
申请日：2013-05-03
Applicant: DALI SYSTEMS CO., LTD.
Inventor： Wan Jong Kim , Kyoung Joon Cho , Jong Heon Kim , Shawn Patrick Stapleton
IPC: H04B1/04
CPC classification number: H04W40/02 , H03F1/3247 , H03F3/24 , H03F2200/336 , H03F2200/57 , H03F2201/3224 , H03F2201/3233 , H04B1/0475 , H04B7/022 , H04B2001/0425 , H04L25/03343 , H04L27/2618 , H04L27/362 , H04L2025/03414 , H04W24/02 , H04W24/04 , H04W40/00 , H04W72/04 , H04W72/0453
Abstract: An efficient baseband predistortion linearization method for reducing the spectral regrowth and compensating memory effects in wideband communication systems using effective multiplexing modulation technique such as wideband code division multiple access and orthogonal frequency division multiplexing is disclosed. The present invention is based on the method of piecewise pre-equalized lookup table based predistortion, which is a cascade of a lookup table predistortion and piecewise pre-equalizers, to reduce the computational complexity and numerical instability for desired linearity performance with memory effects compensation for wideband transmitter systems. Therefore, the present invention could reduce the computational load, which saves hardware resources in an implementation and improve performance, in terms of adjacent channel power ratio.
Abstract translation: 公开了一种使用诸如宽带码分多址和正交频分复用之类的有效复用调制技术在宽带通信系统中减少频谱再生长和补偿存储器效应的有效的基带预失真线性化方法。 本发明基于基于分段预均衡查找表的预失真的方法，该预失真是查找表预失真和分段预均衡器的级联，以减少用于期望的线性性能的计算复杂度和数值不稳定性， 宽带发射机系统。 因此，本发明可以减少在相邻信道功率比方面在实现中节省硬件资源并提高性能的计算负荷。
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