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Dali Systems Co Ltd
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Dali Systems Co Ltd patents


Recent patent applications related to Dali Systems Co Ltd. Dali Systems Co Ltd is listed as an Agent/Assignee. Note: Dali Systems Co Ltd may have other listings under different names/spellings. We're not affiliated with Dali Systems Co Ltd, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "D" | Dali Systems Co Ltd-related inventors


Digital hybrid mode power amplifier system

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... Dali Systems Co Ltd

Self-optimizing distributed antenna system using soft frequency reuse

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... Dali Systems Co Ltd

Software configurable distributed antenna bandwidth compression and transport of signals in noncontiguous frequency blocks

A method for transporting communications signals includes receiving an analog IF signal at a first unit. The analog IF signal includes a first carrier having a first frequency and a first bandwidth and a second carrier having a second frequency different from the first frequency and a second bandwidth. The... Dali Systems Co Ltd

Frequency translation in a virtualized distributed antenna system

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... Dali Systems Co Ltd

Indoor localization using digital off-air access units

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... Dali Systems Co Ltd

Redundancy in a public safety distributed antenna system

A redundancy system for data transport in a Distributed Antenna System (DAS) includes a plurality of Digital Access Units (DAUs). Each of the plurality of DAUs is fed by a plurality of data streams and is operable to transport digital signals between others of the plurality of DAUs. The redundancy... Dali Systems Co Ltd

Wide bandwidth digital predistortion system with reduced sampling rate

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.... Dali Systems Co Ltd

Data transport in a virtualized distributed antenna system

A system for routing signals in a Distributed Antenna System (DAS) includes one or more local Digital Access Units (DAUs) located at a local location and one or more remote DAUs located at one or more remote locations. Each of the one or more local DAUs includes an optical port... Dali Systems Co Ltd

Virtual radio access network using software-defined network of remotes and digital multiplexing switches

A system for routing signals in a Distributed Antenna System (DAS) includes one or more Base Band Units (BBUs). Each of the one or more BBUs has one or more digital outputs. The system also includes a plurality of Digital Multiplexer Units (DMUs) coupled to each other and operable to... Dali Systems Co Ltd

Power amplifier protection using a cyclic redundancy check on the digital transport of data

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... Dali Systems Co Ltd

Method and system for soft frequency reuse in a distributed antenna system

A method for routing and switching operator RF signals includes providing one or more Digital Remote Units (DRUs) and providing at least one Digital Access Unit (DAU) configured to communicate with at least one of the one or more DRUs. A first DRU is operable to communicate using a first... Dali Systems Co Ltd

Feedback based indoor localization using digital off-air access units

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... Dali Systems Co Ltd

Time synchronized routing in a distributed antenna system

A system for routing signals in a Distributed Antenna System includes a plurality of Digital Access Units (DAUs) and a plurality of Digital Remote Units (DRUs). The plurality of DAUs are coupled and operable to route signals between the plurality of DAUs. The plurality of DRUs are coupled to the... Dali Systems Co Ltd

Hybrid data transport for a virtualized distributed antenna system

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... Dali Systems Co Ltd

Remotely reconfigureable distributed antenna system and methods

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... Dali Systems Co Ltd

Virtualized wireless network with pilot beacons

A virtualized DAS network includes one or more digital access units (DAUs) and one or more digital remote units (DRUs) coupled to the one or more DAUs. The virtualized DS network also includes a routing table associated with the one or more DAUs. A signal provided by the one or... Dali Systems Co Ltd

Distributed antenna system

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 invention enables a high degree of flexibility to manage, control, enhance, facilitate the usage and performance... Dali Systems Co Ltd

Virtualized wireless network with pilot beacons

A virtualized DAS network includes one or more digital access units (DAUs) and one or more digital remote units (DRUs) coupled to the one or more DAUs. The virtualized DS network also includes a routing table associated with the one or more DAUs. A signal provided by the one or... Dali Systems Co Ltd

Multi-band wide band power amplifier digital predistortion system

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... Dali Systems Co Ltd

System and digital memorized predistortion for wireless communication

A power amplifier system includes an input operable to receive an original value that reflects information to be communicated and an address data former operable to generate a digital lookup table key. The power amplifier system also includes a predistortion lookup table coupled to the address data former and a... Dali Systems Co Ltd

Self-optimizing distributed antenna system using soft frequency reuse

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... Dali Systems Co Ltd

Distributed antenna system network analytics

The present disclosure generally relates to wireless communication systems employing Distributed Antenna Systems (DAS) as part of a distributed wireless network. More specifically, the present disclosure relates to a DAS network that utilizes traffic monitoring of mobile devices of a distributed wireless network. Traffic monitoring may be used to monitor... Dali Systems Co Ltd








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