公开(公告)号：US20150207545A1

公开(公告)日：2015-07-23

申请号：US14574071

申请日：2014-12-17

Applicant: Dali Systems Co. Ltd.

Inventor： Qianqi Zhuang ,  Shawn Patrick Stapleton

IPC: H04B7/02 ,  H04W84/22

CPC classification number: H04B7/024

Abstract: A system for transporting data in a Distributed Antenna System (DAS) includes at least one Digital Access Unit (DAU) and a plurality of Digital Remote Units (DRUs) coupled to the at least one DAU. The plurality of DRUs are operable to transport signals between the plurality of DRUs and the at least one DAU. The at least one DAU includes: a data transport coder comprising: a framer, an encoder, a scrambler, and a serializer and a data transport decoder comprising: a deserializer, a decoder, a descrambler, a frame synchronizer, and a deframer.

Abstract translation: 用于在分布式天线系统（DAS）中传输数据的系统包括耦合到所述至少一个DAU的至少一个数字接入单元（DAU）和多个数字远程单元（DRU）。 多个DRU可操作以在多个DRU和至少一个DAU之间传送信号。 所述至少一个DAU包括：数据传输编码器，包括：成帧器，编码器，加扰器和串行器以及数据传输解码器，包括：解串器，解码器，解扰器，帧同步器和解帧器。

公开(公告)号：US20150171899A1

公开(公告)日：2015-06-18

申请号：US14553828

申请日：2014-11-25

Applicant: Dali Systems Co. Ltd.

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

IPC: H04B1/04 ,  H04L27/36

CPC classification number: H04B1/0475 ,  H03F1/3247 ,  H03F2200/111 ,  H03F2200/451 ,  H04B1/62 ,  H04L27/2626 ,  H04L27/368

Abstract: A high performance and cost effective method of RF-digital hybrid mode power amplifier systems with high linearity and high efficiency for multi-frequency band wideband communication system applications is disclosed. The present disclosure enables a power amplifier system to be field reconfigurable and support multiple operating frequency bands on the same PA system over a very wide bandwidth. In addition, the present invention supports multi-modulation schemes (modulation agnostic), multi-carriers and multi-channels.

Abstract translation: 公开了一种用于多频带宽带通信系统应用的具有高线性度和高效率的RF数字混合模式功率放大器系统的高性能和成本有效的方法。 本公开使得功率放大器系统能够在现场可重新配置并且在非常宽的带宽上支持相同PA系统上的多个工作频带。 此外，本发明支持多调制方案（调制不可知），多载波和多信道。

公开(公告)号：US09048797B2

公开(公告)日：2015-06-02

申请号：US14335647

申请日：2014-07-18

Applicant: DALI SYSTEMS CO. LTD.

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

IPC: H04L25/49 ,  H03F1/32 ,  H03F3/68 ,  H04B1/00 ,  H04W88/08

CPC classification number: H04B1/0475 ,  H03F1/3247 ,  H03F3/24 ,  H03F3/68 ,  H03F2201/3224 ,  H04B1/0064 ,  H04W24/02 ,  H04W84/047 ,  H04W88/08 ,  H04W88/085 ,  Y02D70/00 ,  Y02D70/122 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/40

Abstract: A remote radio head unit (RRU) system is disclosed. The present invention is based on the method of adaptive digital predistortion to linearize a power amplifier inside the RRU. The power amplifier characteristics such as variation of linearity and asymmetric distortion of the amplifier output signal are monitored by a wideband feedback path and controlled by the adaptation algorithm in a digital module. Therefore, embodiments of the present invention can compensate for the nonlinearities as well as memory effects of the power amplifier systems and also improve performance, 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, multi-frequency bands and multi-channels. Consequentially, the remote radio head system is particularly suitable for wireless transmission systems, such as base-stations, repeaters, and indoor signal coverage systems.

Abstract translation: 公开了一种远程无线电头单元（RRU）系统。 本发明基于对RRU内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非对称失真的功率放大器特性由宽带反馈路径监测并由数字模块中的自适应算法控制。 因此，本发明的实施例可以补偿功率放大器系统的非线性以及存储器效应，并且在功率附加效率，相邻信道泄漏比和峰值与平均功率比方面也提高性能。 本公开使得功率放大器系统能够是现场可重构的并且支持多调制方案（不可调制调制），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：US20140320340A1

公开(公告)日：2014-10-30

申请号：US14183297

申请日：2014-02-18

Applicant: DALI SYSTEMS CO. LTD.

Inventor： Shawn Patrick Stapleton

IPC: G01S19/11 ,  G01S5/14

CPC classification number: G01S19/11 ,  G01S5/14

Abstract: A system for indoor localization using GPS signals in a Distributed Antenna System includes a plurality of Off-Air Access Units (OAAUs). Each of the plurality of OAAUs is operable to receive a GPS signal from at least one of a plurality of GPS satellites and operable to route signals optically to one or more HUBs. The system also includes a plurality of remote units (RUs) located at a Remote location. The plurality of RUs are operable to receive signals from a plurality of local HUBs. The system further includes an algorithm to delay each individual GPS satellite signal to provide indoor localization at each of the plurality of RUs.

Abstract translation: 在分布式天线系统中使用GPS信号进行室内定位的系统包括多个空中接入单元（OAAU）。 多个OAAU中的每一个可操作以从多个GPS卫星中的至少一个接收GPS信号，并可操作以将信号光学地路由到一个或多个HUB。 系统还包括位于远程位置的多个远程单元（RU）。 多个RU可操作以从多个本地HUB接收信号。 该系统还包括延迟每个单独的GPS卫星信号以在多个RU中的每一个处提供室内定位的算法。

公开(公告)号：US20140313076A1

公开(公告)日：2014-10-23

申请号：US14199617

申请日：2014-03-06

Applicant: DALI SYSTEMS CO. LTD.

Inventor： Daryl Meerkerk ,  Shawn Patrick Stapleton

IPC: G01S19/13

CPC classification number: G01S19/13 ,  G01S19/11

Abstract: A system for indoor localization using satellite navigation signals in a Distributed Antenna System. The system includes a plurality of Off-Air Access Units (OAAUs), each operable to receive an individual satellite navigation signal from at least one of a plurality of satellite navigation systems (e.g., GPS, GLONASS, Galileo, QZSS, or BeiDou) and operable to route signals optically to one or more DAUs. The system further includes a plurality of remote DRUs located at a Remote location that are operable to receive signals from a plurality of local DAUs. Moreover, the system includes an algorithm to delay each individual satellite navigation signal for providing indoor localization at each of the plurality of DRUs.

Abstract translation: 在分布式天线系统中使用卫星导航信号进行室内定位的系统。 该系统包括多个空中接入单元（OAAU），每个无线接入单元可操作以从多个卫星导航系统（例如GPS，GLONASS，Galileo，QZSS或BeiDou）中的至少一个接收单独的卫星导航信号，以及 可操作以将信号光学地路由到一个或多个DAU。 该系统还包括位于远程位置的多个远程DRU，其可操作以从多个本地DAU接收信号。 此外，该系统包括延迟每个单独的卫星导航信号以在多个DRU中的每一个处提供室内定位的算法。

公开(公告)号：US20140313075A1

公开(公告)日：2014-10-23

申请号：US14168328

申请日：2014-01-30

Applicant: DALI SYSTEMS CO. LTD.

Inventor： Shawn Patrick Stapleton

IPC: G01S19/01

CPC classification number: G01S19/01 ,  G01S19/11

Abstract: A system for indoor localization using satellite navigation signals in a Distributed Antenna System includes a plurality of Off-Air Access Units (OAAUs). Each of the plurality of OAAUs is operable to receive an individual satellite navigation signal from at least one of a plurality of satellites and operable to route signals optically to one or more DAUs. The system also includes a plurality of remote DRUs located at a Remote location. The plurality of remote DRUs are operable to receive signals from a plurality of the one or more DAUs. The system further includes an algorithm to delay each individual satellite navigation signal for providing indoor localization at each of the plurality of DRUs.

Abstract translation: 在分布式天线系统中使用卫星导航信号的室内定位系统包括多个无线接入单元（OAAU）。 多个OAAU中的每一个可操作以从多个卫星中的至少一个接收单独的卫星导航信号，并可操作以将信号光学地路由到一个或多个DAU。 该系统还包括位于远程位置的多个远程DRU。 多个远程DRU可操作以从多个一个或多个DAU接收信号。 该系统还包括延迟每个单独的卫星导航信号以在多个DRU中的每一个处提供室内定位的算法。

公开(公告)号：US20140286247A1

公开(公告)日：2014-09-25

申请号：US14169719

申请日：2014-01-31

Applicant: DALI SYSTEMS CO. LTD

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

IPC: H04W24/02 ,  H04L25/02 ,  H04L5/00

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.

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。

公开(公告)号：US20140161057A1

公开(公告)日：2014-06-12

申请号：US13935157

申请日：2013-07-03

Applicant: Dali Systems Co. Ltd.

Inventor： Seyed Amin Hejazi ,  Shawn Patrick Stapleton

IPC: H04W52/24 ,  H04L5/00

CPC classification number: H04W52/243 ,  H04L5/0023 ,  H04L5/0032 ,  H04L5/0073 ,  H04W52/346 ,  H04W72/0473

Abstract: A method of determining a carrier power in a communications system including a processor includes a) setting a power differential between a reference carrier and one or more carriers, b) measuring a number of satisfied users at the power differential, and c) measuring a capacity for the satisfied users at the power differential. The method also includes d) increasing the power differential by a predetermined amount and e) determining, using the processor, that the number of satisfied users at the increased power differential is greater than or equal to the number of satisfied users at the power differential. The method further includes f) repeating a)-c) and g) setting the carrier power at an iterated power level.

Abstract translation: 一种在包括处理器的通信系统中确定载波功率的方法，包括：a）设置参考载波与一个或多个载波之间的功率差; b）测量所述功率差下的满足用户数量，以及c）测量容量 为满足用户的电力差。 该方法还包括：d）将功率差增加预定量，以及e）使用所述处理器确定所述增加的功率差异的满足用户的数量大于或等于所述功率差异满足的用户的数量。 该方法还包括f）重复a）-c）和g）以迭代功率级设置载波功率。

公开(公告)号：US08548403B2

公开(公告)日：2013-10-01

申请号：US13776163

申请日：2013-02-25

Applicant: Dali Systems Co. Ltd.

Inventor： Wan Jong Kim ,  Shawn Patrick Stapleton

IPC: H04B1/04

CPC classification number: H03F1/3258 ,  H03F1/3247 ,  H03F1/3294 ,  H03F2200/204 ,  H03F2200/336 ,  H03F2200/57 ,  H03F2201/3224 ,  H03F2201/3233 ,  H04B1/0475 ,  H04L25/03038 ,  H04L25/03343 ,  H04L2025/03356 ,  H04L2025/03477

Abstract: A baseband-derived RF predistortion system using a lookup table having coefficients extracted at baseband and then applied at RF by means of a vector modulator. The architecture combines the narrowband advantage of envelope predistortion with the accuracy of baseband predistortion, and including compensation for memory effects. A polynomial-based alternative is also described.

公开(公告)号：US20130128810A1

公开(公告)日：2013-05-23

申请号：US13670290

申请日：2012-11-06

Applicant: Dali Systems Co. Ltd.

Inventor： Albert S. Lee ,  Shawn Patrick Stapleton ,  Paul Lemson ,  Gary Spedaliere

IPC: H04W84/04

CPC classification number: H04W84/042 ,  H04W4/70 ,  H04W4/90 ,  H04W84/047 ,  H04W88/08 ,  H04W88/085

Abstract: According to an embodiment of the present invention, a network is provided. The network may include a first base transceiver station (BTS). The first BTS may be operable to provide a first signal including a plurality of first carriers. The network may also include a second BTS operable to provide a second signal including a plurality of second carriers. The network may also include a set of one or more digital access units (DAUs), each of the one or more DAUs being coupled to at least one of the first BTS or the second BTS. A set of one or more digital remote units (DRUs) may be included in the network, each of the DRUs being coupled to one of the one or more DAUs and operable to broadcast the first signal or the second signal.

Abstract translation: 根据本发明的实施例，提供一种网络。 网络可以包括第一基站收发台（BTS）。 第一BTS可以用于提供包括多个第一载波的第一信号。 网络还可以包括可操作以提供包括多个第二载波的第二信号的第二BTS。 网络还可以包括一组一个或多个数字接入单元（DAU），一个或多个DAU中的每一个耦合到第一BTS或第二BTS中的至少一个。 一组一个或多个数字远程单元（DRU）可以包括在网络中，每个DRU被耦合到一个或多个DAU中的一个，并且可操作以广播第一信号或第二信号。