公开(公告)号：US08730786B2

公开(公告)日：2014-05-20

申请号：US12928933

申请日：2010-12-21

Applicant: Chengxun Wang ,  Shawn Patrick Stapleton

Inventor： Chengxun Wang ,  Shawn Patrick Stapleton

IPC: H04J1/12

CPC classification number: H03F1/304 ,  H03F1/3241 ,  H03F1/3247 ,  H03F1/3258 ,  H03F3/087 ,  H03F3/19 ,  H03F3/24 ,  H03F2200/18 ,  H03F2200/204 ,  H03F2200/207 ,  H03F2200/447 ,  H03F2200/451 ,  H03F2201/3206 ,  H03F2201/3209 ,  H03F2201/3212 ,  H03F2201/3215 ,  H03F2201/3224 ,  H03F2201/3227 ,  H04L25/067 ,  H04L25/08 ,  H04L27/0008 ,  H04L27/368 ,  H04W24/02

Abstract: A remote radio head unit (RRU) system for multiple operating frequency bands, multi-channels, driven by a single or more wide band power amplifiers. More specifically, the present invention enables multiple-bands RRU to use fewer power amplifiers in order to reduce size and cost of the multi-band RRU. The present invention is based on the method of using duplexers and/or interference cancellation system technique to increase the isolation between the transmitter signal and receiver signal of the RRU.

Abstract translation: 用于多个工作频带的远程无线电头单元（RRU）系统，由多个单个或多个宽带功率放大器驱动的多通道。 更具体地，本发明使得多频带RRU能够使用更少的功率放大器，以便减小多频带RRU的尺寸和成本。 本发明是基于使用双工器和/或干扰消除系统技术来增加RRU的发射机信号和接收机信号之间的隔离的方法。

公开(公告)号：US20110158081A1

公开(公告)日：2011-06-30

申请号：US12928933

申请日：2010-12-21

Applicant: Chengxun Wang ,  Shawn Patrick Stapleton

Inventor： Chengxun Wang ,  Shawn Patrick Stapleton

IPC: H04J3/10

CPC classification number: H03F1/304 ,  H03F1/3241 ,  H03F1/3247 ,  H03F1/3258 ,  H03F3/087 ,  H03F3/19 ,  H03F3/24 ,  H03F2200/18 ,  H03F2200/204 ,  H03F2200/207 ,  H03F2200/447 ,  H03F2200/451 ,  H03F2201/3206 ,  H03F2201/3209 ,  H03F2201/3212 ,  H03F2201/3215 ,  H03F2201/3224 ,  H03F2201/3227 ,  H04L25/067 ,  H04L25/08 ,  H04L27/0008 ,  H04L27/368 ,  H04W24/02

Abstract: A remote radio head unit (RRU) system for multiple operating frequency bands, multi-channels, driven by a single or more wide band power amplifiers. More specifically, the present invention enables multiple-bands RRU to use fewer power amplifers in order to reduce size and cost of the multi-band RRU. The present invention is based on the method of using duplexers and/or interference cancellation system technique to increase the isolation between the transmitter signal and receiver signal of the RRU.

Abstract translation: 用于多个工作频带的远程无线电头单元（RRU）系统，由多个单个或多个宽带功率放大器驱动的多通道。 更具体地，本发明使得多频带RRU能够使用更少的功率放大器，以便减少多频带RRU的尺寸和成本。 本发明基于使用双工器和/或干扰消除系统技术来增加RRU的发射机信号和接收机信号之间的隔离的方法。

公开(公告)号：US20140072064A1

公开(公告)日：2014-03-13

申请号：US13602818

申请日：2012-09-04

Applicant: Paul Lemson ,  Shawn Patrick Stapleton ,  Sasa Trajkovic

Inventor： Paul Lemson ,  Shawn Patrick Stapleton ,  Sasa Trajkovic

IPC: H04B7/04

CPC classification number: H04B7/04 ,  H04B7/022 ,  H04B10/25753 ,  H04W88/085

Abstract: A distributed antenna system includes a master unit including a downlink RF input operable to receive an RF input signal from a downlink port of a base station, a first optical port, and a second optical port. The distributed antenna system also includes a first remote unit coupled to the first optical port. The first remote unit comprises a downlink antenna port and a first uplink antenna port and a second remote unit coupled to the second optical port of the master unit. The second remote unit comprises a downlink antenna port and a second uplink antenna port. The master unit is operable to transmit a first RF signal associated with the first RF uplink signal to a first uplink port of the base station and transmit a second RF signal associated with the second RF uplink signal to a second uplink port of the base station.

Abstract translation: 分布式天线系统包括主单元，其包括可操作以从基站的下行链路端口，第一光端口和第二光端口接收RF输入信号的下行链路RF输入。 分布式天线系统还包括耦合到第一光端口的第一远程单元。 第一远程单元包括下行链路天线端口和第一上行链路天线端口以及耦合到主单元的第二光端口的第二远程单元。 第二远程单元包括下行链路天线端口和第二上行链路天线端口。 主单元可操作地将与第一RF上行链路信号相关联的第一RF信号发送到基站的第一上行链路端口，并将与第二RF上行链路信号相关联的第二RF信号发送到基站的第二上行链路端口。

公开(公告)号：US08274332B2

公开(公告)日：2012-09-25

申请号：US12603419

申请日：2009-10-21

Applicant: Kyoung Joon Cho ,  Wan Jong Kim ,  Shawn Patrick Stapleton

Inventor： Kyoung Joon Cho ,  Wan Jong Kim ,  Shawn Patrick Stapleton

IPC: H03F3/68

CPC classification number: H03F1/0288 ,  H03F1/0261 ,  H03F1/56 ,  H03F3/193 ,  H03F3/211 ,  H03F3/607 ,  H03F2200/451 ,  H03F2203/21106

Abstract: A power amplifier using N-way Doherty structure with adaptive bias supply power tracking for extending the efficiency region over the high peak-to-average power ratio of the multiplexing modulated signals such as wideband code division multiple access and orthogonal frequency division multiplexing is disclosed. In an embodiment, the present invention uses a dual-feed distributed structure to an N-way Doherty amplifier to improve the isolation between at least one main amplifier and at least one peaking amplifier and, and also to improve both gain and efficiency performance at high output back-off power. Hybrid couplers can be used at either or both of the input and output. In at least some implementations, circuit space is also conserved due to the integration of amplification, power splitting and combining.

Abstract translation: 公开了一种使用N路Doherty结构的功率放大器，其具有自适应偏置电源功率跟踪，用于在诸如宽带码分多址和正交频分复用的复用调制信号的高峰值与平均功率比之间扩展效率区域。 在一个实施例中，本发明使用双向馈电分布式结构到N路Doherty放大器，以改善至少一个主放大器与至少一个峰化放大器之间的隔离，并且还提高高电平的增益和效率性能 输出回退电源。 混合耦合器可以在输入和输出中的任一个或两者上使用。 在至少一些实现中，由于放大，功率分配和组合的集成，电路空间也是保守的。

公开(公告)号：US20080265996A1

公开(公告)日：2008-10-30

申请号：US12108502

申请日：2008-04-23

Applicant: Wan Jong Kim ,  Kyoung Joon Cho ,  Shawn Patrick Stapleton ,  Jong Heon Kim ,  Dali Yang

Inventor： Wan Jong Kim ,  Kyoung Joon Cho ,  Shawn Patrick Stapleton ,  Jong Heon Kim ,  Dali Yang

IPC: H03F1/32

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。

公开(公告)号：US20080152037A1

公开(公告)日：2008-06-26

申请号：US11961969

申请日：2007-12-20

Applicant: Wan Jong Kim ,  Kyoung Joon Cho ,  Jong Heon Kim ,  Shawn Patrick Stapleton

Inventor： Wan Jong Kim ,  Kyoung Joon Cho ,  Jong Heon Kim ,  Shawn Patrick Stapleton

IPC: H04L25/49

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。

公开(公告)号：US08848766B2

公开(公告)日：2014-09-30

申请号：US13211236

申请日：2011-08-16

Applicant: Paul Lemson ,  Shawn Patrick Stapleton ,  Sasa Trajko Trajkovic

Inventor： Paul Lemson ,  Shawn Patrick Stapleton ,  Sasa Trajko Trajkovic

IPC: H04B1/38 ,  H04B1/18 ,  H04B1/40

CPC classification number: H04W72/04 ,  H04B1/18 ,  H04B1/40

Abstract: A remote radio head unit (RRU) system for achieving high data rate communications in a Distributed Antenna System is disclosed. The Distributed Antenna System is configured as a Neutral Host enabling multiple operators to exist on one DAS system. The present disclosure enables a remote radio head unit to be field reconfigurable and support multi-modulation schemes (modulation-independent), multi-carriers, multi-frequency bands and multi-channels. As a result, the remote radio head system is particularly suitable for wireless transmission systems, such as base-stations, repeaters, and indoor signal coverage systems.

Abstract translation: 公开了一种用于在分布式天线系统中实现高数据速率通信的远程无线电头单元（RRU）系统。 分布式天线系统配置为中性主机，使多个操作员能够存在于一个DAS系统上。 本公开使得远程无线电头单元能够是现场可重新配置的并且支持多调制方案（与调制无关），多载波，多频带和多信道。 因此，远程无线电头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。

公开(公告)号：US08811917B2

公开(公告)日：2014-08-19

申请号：US12108502

申请日：2008-04-23

Applicant: Wan Jong Kim ,  Kyoung Joon Cho ,  Shawn Patrick Stapleton ,  Jong Heon Kim ,  Dali Yang

Inventor： Wan Jong Kim ,  Kyoung Joon Cho ,  Shawn Patrick Stapleton ,  Jong Heon Kim ,  Dali Yang

IPC: H04B1/04

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。

公开(公告)号：US08804870B2

公开(公告)日：2014-08-12

申请号：US12928931

申请日：2010-12-21

Applicant: Wan Jong Kim ,  Kyoung Joon Cho ,  Shawn Patrick Stapleton ,  Ying Xiao

Inventor： Wan Jong Kim ,  Kyoung Joon Cho ,  Shawn Patrick Stapleton ,  Ying Xiao

IPC: H03F1/34 ,  H03F1/32

CPC classification number: H03F1/304 ,  H03F1/3241 ,  H03F1/3247 ,  H03F1/3258 ,  H03F3/087 ,  H03F3/19 ,  H03F3/24 ,  H03F2200/18 ,  H03F2200/204 ,  H03F2200/207 ,  H03F2200/447 ,  H03F2200/451 ,  H03F2201/3206 ,  H03F2201/3209 ,  H03F2201/3212 ,  H03F2201/3215 ,  H03F2201/3224 ,  H03F2201/3227 ,  H04L25/067 ,  H04L25/08 ,  H04L27/0008 ,  H04L27/368 ,  H04W24/02

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 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。 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。

公开(公告)号：US08682338B2

公开(公告)日：2014-03-25

申请号：US13211243

申请日：2011-08-16

Applicant: Paul Lemson ,  Shawn Patrick Stapleton ,  Sasa Trajkovic ,  Albert S. Lee

Inventor： Paul Lemson ,  Shawn Patrick Stapleton ,  Sasa Trajkovic ,  Albert S. Lee

IPC: H04W72/00

CPC classification number: H04W72/0453 ,  H03F1/3247 ,  H03F3/24 ,  H03F2200/204 ,  H03F2201/3224 ,  H03F2201/3233 ,  H04B10/2575 ,  H04B10/25753 ,  H04L5/0032 ,  H04L5/0048 ,  H04L25/02 ,  H04L45/56 ,  H04L47/125 ,  H04Q11/0067 ,  H04Q2011/0081 ,  H04Q2213/1301 ,  H04W24/02 ,  H04W40/02 ,  H04W72/0486 ,  H04W88/085

Abstract: The present disclosure is a novel utility of a software defined radio (SDR) based Distributed Antenna System (DAS) that is field reconfigurable and support multi-modulation schemes (modulation-independent), multi-carriers, multi-frequency bands and multi-channels. The present disclosure enables a high degree of flexibility to manage, control, enhance, facilitate the usage and performance of a distributed wireless network such as flexible simulcast, automatic traffic load-balancing, network and radio resource optimization, network calibration, autonomous/assisted commissioning, carrier pooling, automatic frequency selection, frequency carrier placement, traffic monitoring, traffic tagging, pilot beacon, etc. As a result, the SDR DAS can increase the efficiency and traffic capacity of the operators' wireless network.

Abstract translation: 本公开是基于软件定义无线电（SDR）的分布式天线系统（DAS）的新颖实用性，其是现场可重配置的并且支持多调制方案（与调制无关），多载波，多频带和多信道 。 本公开使得能够高度灵活地管理，控制，增强，促进分布式无线网络的使用和性能，例如灵活的联播，自动流量负载平衡，网络和无线电资源优化，网络校准，自主/辅助调试 载波池，自动频率选择，载波放置，流量监控，流量标签，导频信标等。因此，SDR DAS可以提高运营商无线网络的效率和流量。