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Methods for recovering rfid data based upon probability using an rfid receiver
RFID data signals from RFID tags may be recovered by determining the probabilities of transitions between data states between a series of a pairs of signal samples using a set of predetermined probabilities related to data, timing, baud rate and/or phase variables affecting the received signal and processing those determined... Mojix Inc
Collision detection using a multiple symbol noncoherent soft output detector
Systems and methods for detecting collisions in radio frequency tags in accordance with embodiments of the invention are disclosed. In one embodiment, a receiver system includes a receiver configured to receive and sample a phase modulated input signal, and a multiple symbol noncoherent soft output detector configured to receive the... Mojix Inc
Systems and methods for detecting patterns in spatio-temporal data collected using an rfid system
Systems and methods are described that collect spatio-temporal data using an RFID system that is capable of locating the spatial position of a sensor, which is typically unaware of its location. Such systems and methods can be contrasted with conventional RFID systems in that they are able to determine the... Mojix Inc
Systems and methods for secure supply chain management and inventory control
Systems for encoding and reading RFID tags on a collection of items are shown. One embodiment of the invention includes a plurality of items, where each item possesses an item identifier string, and a plurality of RFID tags, where an RFID tag is affixed to each of the items and... Mojix Inc
Multiple symbol noncoherent soft output detector
Multiple symbol noncoherent soft output detectors in accordance with embodiments of the invention are disclosed. In a number of embodiments, the multiple symbol noncoherent soft output detector uses soft metrics based on the Log Likelihood Ratio (LLR) of each symbol to provide information concerning the reliability of each detected symbol.... Mojix Inc
Joint entity and object tracking using an rfid and detection network
Several embodiments of the invention provide for a system and processes for joint entity and object tracking using RFID and a detection network. The use of RFID and a detection network allows for the efficient detection, tracking, and recording of an entity path. Various embodiments of the invention allow the... Mojix Inc
Rfid systems using distributed exciter network
RFID systems are disclosed that include at least one RFID receiver system and a distributed exciter architecture. Exciters can be connected via wired and/or wireless connections to the RFID receiver system, which can control activation of the exciters to detect the presence of RFID tags within interrogation spaces defined by... Mojix Inc
Location estimation and tracking for passive rfid and wireless sensor networks using mimo systems
Systems and methods for location estimation and tracking for passive RFID and wireless sensor networks in accordance with embodiments of the invention are disclosed. In one embodiment, a process for obtaining location information using an RFID reader system includes transmitting a combined interrogation and ranging signal from a plurality of... Mojix Inc
A multi-protocol, multi-band array antenna system may be used in Radio Frequency Identification (RFID) system reader and sensory networks. The antenna array may include array elements with an integrated low noise amplifier. The system may employ digital beam forming techniques for transmission and steering of a beam to a specific... Mojix Inc