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公开(公告)号：US20180092045A1
公开(公告)日：2018-03-29
申请号：US15676631
申请日：2017-08-14
Applicant: Dali Systems Co. Ltd.
Inventor： Seyed Amin Hejazi , Shawn Patrick Stapleton
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.
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公开(公告)号：US20180054823A1
公开(公告)日：2018-02-22
申请号：US15638800
申请日：2017-06-30
Applicant: Dali Systems Co. Ltd.
Inventor： Shawn Patrick Stapleton , Daryl Meerkerk
CPC classification number: H04W72/0453 , H04B7/022 , H04B7/15514 , H04B7/15542 , H04W36/06 , H04W88/085
Abstract: A method for communicating with wireless user devices includes receiving a signal at a DAU, the signal residing within a first frequency band and processing the signal at the DAU. The method also includes transmitting the processed signal from the DAU and receiving the transmitted signal at a DRU. The method further includes converting the signal to a second frequency band different than the first frequency band.
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公开(公告)号：US09866414B2
公开(公告)日：2018-01-09
申请号：US14337004
申请日：2014-07-21
Applicant: DALI SYSTEMS CO. LTD.
Inventor： Wan Jong Kim , Kyoung Joon Cho , Shawn Patrick Stapleton , Ying Xiao
IPC: H04L27/36 , H04L27/00 , H03F1/32 , H03F1/30 , H03F3/08 , H03F3/19 , H03F3/24 , H04W24/02 , H04L25/06 , H04L25/08
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.
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公开(公告)号：US09769766B2
公开(公告)日：2017-09-19
申请号：US15154073
申请日：2016-05-13
Applicant: Dali Systems Co. Ltd.
Inventor： Seyed Amin Hejazi , Shawn Patrick Stapleton
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.
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15.发明申请公开(公告)号：US20170230085A1
公开(公告)日：2017-08-10
申请号：US15380686
申请日：2016-12-15
Applicant: Dali Systems Co. Ltd.
Inventor： Qianqi Zhuang , Shawn Patrick Stapleton
CPC classification number: H04B7/022 , H04L1/0011 , H04L1/0045 , H04L1/0061
Abstract: A method of conditioning payload data includes providing a processor and receiving a packet comprising payload data, a first error code, and a second error code. The method also includes computing, using the processor, a first recalculated error code and determining a difference between the first error code and the first recalculated error code. The method further includes modifying the payload data in response to determining the difference.
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Patent Agency Ranking
公开(公告)号：US09621971B2
公开(公告)日：2017-04-11
申请号：US14678779
申请日：2015-04-03
Applicant: Dali Systems Co. Ltd.
Inventor： Shawn Patrick Stapleton , Sasa Trajkovic
CPC classification number: H04Q11/0067 , H04B10/25753 , H04B10/27 , H04J14/0286 , H04Q11/0005 , H04Q2011/0016 , H04W40/02 , H04W88/085 , Y02D70/00 , Y02D70/1242 , Y02D70/1262 , Y02D70/142 , Y02D70/30
Abstract: A system for routing signals in a Distributed Antenna System includes a plurality of local Digital Access Units (DAUs) located at a Local location. Each of the plurality of local DAUs is coupled to each other and operable to route signals between the plurality of local DAUs. Each of the plurality of local DAUs includes one or more Base Transceiver Station (BTS) RF connections. Each of the plurality of BTS RF connections is operable to be coupled to one of one or more sectors of a BTS. The system also includes a plurality of remote DAUs located at a Remote location. The plurality of remote DAUs are coupled to each other and operable to transport signals between the plurality of remote DAUs.
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公开(公告)号：US09537572B2
公开(公告)日：2017-01-03
申请号：US13777185
申请日：2013-02-26
Applicant: DALI SYSTEMS CO. LTD.
Inventor： Shawn Patrick Stapleton , Sasa Trajkovic
CPC classification number: H04B10/25754 , H04B10/27 , H04W16/24 , H04W16/26 , H04W88/085
Abstract: A system for data transport in a Distributed Antenna System (DAS) includes a plurality of remote Digital Access Units (DAUs) located at a Remote location. The plurality of remote DAUs are coupled to each other and operable to transport digital signals between the plurality of remote DAUs. The system also includes a plurality of central hubs. Each of the plurality of central hubs is in communication with one of the remote DAUs using an electrical communications path. The system further includes a plurality of transmit/receive cells. Each of the plurality of transmit/receive cells includes a plurality of remote hubs. Each of the remote hubs in one of the plurality of transmit/receive cells is in communication with one of the plurality of central hubs using an optical communications path.
Abstract translation: 分布式天线系统（DAS）中的数据传输系统包括位于远程位置的多个远程数字接入单元（DAU）。 多个远程DAU彼此耦合并且可操作以在多个远程DAU之间传送数字信号。 该系统还包括多个中心集线器。 多个中央集线器中的每一个使用电通信路径与远程DAU之一进行通信。 该系统还包括多个发送/接收小区。 多个发送/接收小区中的每一个包括多个远程集线器。 多个发送/接收小区之一中的每个远程集线器使用光通信路径与多个中央集线器之一进行通信。
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18.发明授权公开(公告)号：US09476984B2
公开(公告)日：2016-10-25
申请号：US14171600
申请日：2014-02-03
Applicant: DALI SYSTEMS CO. LTD.
Inventor： Shawn Patrick Stapleton
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 local 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 and a GPS receiver at the remote location used in a feedback loop with the DRU to control the delays.
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可操作以从多个本地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的每一个处提供室内定位的算法，以及用于与DRU进行反馈回路的远程位置处的GPS接收机来控制延迟。
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19.发明申请公开(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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公开(公告)号：US20160261294A1
公开(公告)日：2016-09-08
申请号：US14987093
申请日：2016-01-04
Applicant: DALI SYSTEMS CO. LTD.
Inventor： Wan-Jong Kim , Shawn Patrick Stapleton
IPC: H04B1/04
CPC classification number: H04B1/0475 , H03F1/02 , H03F1/3241 , H03F3/24 , H04B1/0017 , H04B2001/0425 , H04B2001/0433 , H04B2001/045
Abstract: A digital predistortion linearization method is provided for increasing the instantaneous or operational bandwidth for RF power amplifiers employed in wideband communication systems. Embodiments of the present invention provide a method of increasing DPD linearization bandwidth using a feedback filter integrated into existing digital platforms for multi-channel wideband wireless transmitters. An embodiment of the present invention utilizes a DPD feedback signal in conjunction with a low power band-pass filter in the DPD feedback path.
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