Patent application number | Description | Published |
20080260066 | Dynamic digital pre-distortion system - A Dynamic Digital Pre-Distortion (DDPD) system is disclosed to rapidly correct power amplifier (PA) non-linearity and memory effects. To perform pre-distortion, a DDPD engine predistorts an input signal in order to cancel PA nonlinearities as the signal is amplified by the PA. The DDPD engine is implemented as a composite of one linear filter and N-1 high order term linear filters. The bank of linear filters have programmable complex coefficients. To compute the coefficients, samples from the transmit path and a feedback path are captured, and covariance matrices A and B are computed using optimized hardware. After the covariance matrices are computed, Gaussian elimination processing may be employed to compute the coefficients. Mathematical and hardware optimizations may be employed to simplify and reduce the number of multiplication operands and other operations, which can enable the DDPD system to fit within a single chip. | 10-23-2008 |
20110286509 | DYNAMIC DIGITAL PRE-DISTORTION SYSTEM - A Dynamic Digital Pre-Distortion (DDPD) system is disclosed to rapidly correct power amplifier (PA) non-linearity and memory effects. To perform pre-distortion, a DDPD engine predistorts an input signal in order to cancel PA nonlinearities as the signal is amplified by the PA. The DDPD engine is implemented as a composite of one linear filter and N−1 high order term linear filters. The bank of linear filters have programmable complex coefficients. To compute the coefficients, samples from the transmit path and a feedback path are captured, and covariance matrices A and B are computed using optimized hardware. After the covariance matrices are computed, Gaussian elimination processing may be employed to compute the coefficients. Mathematical and hardware optimizations may be employed to simplify and reduce the number of multiplication operands and other operations, which can enable the DDPD system to fit within a single chip. | 11-24-2011 |
20120300878 | DYNAMIC DIGITAL PRE-DISTORTION SYSTEM - A Dynamic Digital Pre-Distortion (DDPD) system is disclosed to rapidly correct power amplifier (PA) non-linearity and memory effects. To perform pre-distortion, a DDPD engine predistorts an input signal in order to cancel PA nonlinearities as the signal is amplified by the PA. The DDPD engine is implemented as a composite of one linear filter and N−1 high order term linear filters. The bank of linear filters have programmable complex coefficients. To compute the coefficients, samples from the transmit path and a feedback path are captured, and covariance matrices A and B are computed using optimized hardware. After the covariance matrices are computed, Gaussian elimination processing may be employed to compute the coefficients. Mathematical and hardware optimizations may be employed to simplify and reduce the number of multiplication operands and other operations, which can enable the DDPD system to fit within a single chip. | 11-29-2012 |
20140072075 | DYNAMIC DIGITAL PRE-DISTORTION SYSTEM - A Dynamic Digital Pre-Distortion (DDPD) system is disclosed to rapidly correct power amplifier (PA) non-linearity and memory effects. To perform pre-distortion, a DDPD engine predistorts an input signal in order to cancel PA nonlinearities as the signal is amplified by the PA. The DDPD engine is implemented as a composite of one linear filter and N−1 high order term linear filters. The bank of linear filters have programmable complex coefficients. To compute the coefficients, samples from the transmit path and a feedback path are captured, and covariance matrices A and B are computed using optimized hardware. After the covariance matrices are computed, Gaussian elimination processing may be employed to compute the coefficients. Mathematical and hardware optimizations may be employed to simplify and reduce the number of multiplication operands and other operations, which can enable the DDPD system to fit within a single chip. | 03-13-2014 |
Patent application number | Description | Published |
20110025496 | CONTEXTUAL BASED DETERMINATION OF ACCURACY OF POSITION FIXES - Techniques for contextual based determination of accuracy of position fixes, and modification of the position fixes in accordance with the accuracy are disclosed. In one aspect, a position fix for an asset is received. The first position fix corresponds to a location of an event during shipment of the asset. If it is determined that the position fix is inaccurate, the position fix is modified in accordance with a type of the event. | 02-03-2011 |
20110050397 | SYSTEM FOR GENERATING SUPPLY CHAIN MANAGEMENT STATISTICS FROM ASSET TRACKING DATA - Techniques for monitoring and tracking assets and providing notifications to users are disclosed. In one aspect, enterprise data describing a plurality of items, each item being shipped in one of a plurality of assets, is received. Tag data for a tag associated with each asset is received while the asset is in transit, the tag data including a current location of the respective asset. Supply chain management statistics are generated from enterprise data and the tag data. | 03-03-2011 |
20110050423 | ASSET MONITORING AND TRACKING SYSTEM - Techniques for monitoring and tracking assets and providing notifications to users are disclosed. In one aspect, a request to track an asset and enterprise data describing the asset are received, a tag is selected to associate with the asset, an event notification is received from the tag, and a user notification is generated from the event notification and the enterprise data. In another aspect, a request for a tag is received, a tag is selected in response to the request, a tag is routed to the origin location for the tag, a notification is received that the tag has arrived at a destination location, and the tag is routed from the destination location to a tag pool. | 03-03-2011 |
20110050424 | ASSET TRACKING USING ALTERNATIVE SOURCES OF POSITION FIX DATA - Techniques for tracking physical assets are disclosed. In one aspect, input indicating that an asset has been loaded on a conveyance is received. When a tag attached to the asset is unable to transmit position fix data describing a location of the asset to a server, alternative position fix data (e.g., from the conveyance or another tag coupled to another asset on the conveyance) is used to indicate the position of the asset and tag. In another aspect, a relay component is used to receive the tag position fix data from the tag and forward it to the server. | 03-03-2011 |
20110054979 | Physical Event Management During Asset Tracking - Techniques for physical event management while tracking physical assets are disclosed. In one aspect, data identifying locations of interest in a journey of an asset is received. A position fix for the asset is received and a determination is made that the asset is within a location of interest. In another aspect, data identifying one or more milestones in a journey of the asset is received. An event notification is received from a tag coupled to the asset, and it is determined that there is a problem in the shipment of the asset. In yet another aspect, data identifying one or more actions that should be taken after events of interest in a journey of the asset is received. An event notification is received from a tag coupled to the asset, and it is determined that a particular action should be taken. | 03-03-2011 |
20110133888 | CONTEXTUALLY AWARE MONITORING OF ASSETS - An apparatus, method and system for contextually aware monitoring of a supply chain are disclosed. In some implementations, contextually aware monitoring can include monitoring of the supply chain tradelane with tracking devices including sensors for determining location, velocity, heading, vibration, acceleration (e.g., 3D acceleration), or any other sensor that can monitor the environment of the shipping container to provide contextual awareness. The contextual awareness can be enabled by geofencing and recursive algorithms, which allow dynamic modification of the tracking device behavior. Dynamic modification can reduce performance to save power (e.g., save battery usage) and lower costs. Dynamic modification can increase performance where it matters in the supply chain for improved reporting accuracy or frequency or recognition of supply chain events. Dynamic modification can adapt performance such as wireless communications to the region or location of the tracking device. | 06-09-2011 |
20120303498 | ASSET MONITORING AND TRACKING SYSTEM - Techniques for monitoring and tracking assets and providing notifications to users are disclosed. In one aspect, a request to track an asset and enterprise data describing the asset are received, a tag is selected to associate with the asset, an event notification is received from the tag, and a user notification is generated from the event notification and the enterprise data. In another aspect, a request for a tag is received, a tag is selected in response to the request, a tag is routed to the origin location for the tag, a notification is received that the tag has arrived at a destination location, and the tag is routed from the destination location to a tag pool. | 11-29-2012 |
20120310854 | Physical Event Management During Asset Tracking - Techniques for physical event management while tracking physical assets are disclosed. In one aspect, data identifying locations of interest in a journey of an asset is received. A position fix for the asset is received and a determination is made that the asset is within a location of interest. In another aspect, data identifying one or more milestones in a journey of the asset is received. An event notification is received from a tag coupled to the asset, and it is determined that there is a problem in the shipment of the asset. In yet another aspect, data identifying one or more actions that should be taken after events of interest in a journey of the asset is received. An event notification is received from a tag coupled to the asset, and it is determined that a particular action should be taken. | 12-06-2012 |
20140091781 | SECURITY SYSTEM - Systems, apparatus, and methods disclosed herein feature a housing defining an interior cavity, a flexible cable including an electrically conductive body extending from a first end to a second end, at least a portion of the first and second ends of the cable configured to be held within the interior cavity, a locking assembly disposed in the interior cavity and configured to secure the cable to the housing, an electrical circuit disposed in the interior cavity, and a monitoring sub-system disposed within the interior cavity and configured to monitor an electrical state of the cable. The electrical circuit and the cable are arranged such that: a continuous electrical path is formed when the cable is secured to the housing by the locking assembly and at least a portion of each of the first and second ends of the cable are held within the interior cavity, and the electrical path is altered when the cable is detached from the housing, the cable is tampered with, or either of the first and second ends of the cable are entirely removed from the interior cavity. | 04-03-2014 |
20140091931 | Container Monitoring Device with Cable Lock and Remote Sensor Pods - In some implementations, a container monitoring device can include an electrically conductive cable for securing the doors of a shipping container. The container monitoring device can transmit a signal through the cable and detect when the cable has been cut or tampered with based on the transmitted signal. In some implementations, the conductive cable can be reused to secure the doors of the shipping container after the cable has been cut. In some implementations, the container monitoring device can wirelessly communicate with one or more sensor pods located inside the shipping container. The sensor pods can include various environmental sensors configured to take measurements of environmental conditions within the shipping container. The sensor pods can transmit the sensor measurements to the container monitoring device and the container monitoring device can report the sensor measurements to a server for review by a user. | 04-03-2014 |
20140111334 | SENSOR POD - A sensor pod includes a housing defining an interior cavity; a fixture configured to attach the housing to a surface; an infrared sensor in the cavity configured to monitor infrared light through a first port in the housing; and a monitoring system disposed in the interior cavity and configured to receive a signal from the infrared sensor and determine whether the housing has been detached from the surface based on the signal, and to generate an alert signal when the housing is determined to have been detached from the surface. | 04-24-2014 |