Abstract: Disclosed embodiments provide systems, methods, and techniques for lineage detection of calculations (e.g., processes, metrics, important data elements, data elements, or the like). According to disclosed embodiments, a lineage detector acquires one or more parameters, which at least include a first parameter indicative of source code and a second parameter indicative of a calculation. The lineage detector also parses the source code. After parsing the source code, the lineage detector determines the data lineage of the calculation based on the parsed source code. In some embodiments, the lineage detector generates and displays output of the data lineage.

Abstract: Disclosed embodiments provide systems, methods, and techniques for lineage detection of calculations (e.g., processes, metrics, important data elements, data elements, or the like). According to disclosed embodiments, a lineage detector acquires one or more parameters, which at least include a first parameter indicative of source code and a second parameter indicative of a calculation. The lineage detector also parses the source code. After parsing the source code, the lineage detector determines the data lineage of the calculation based on the parsed source code. In some embodiments, the lineage detector generates and displays output of the data lineage.

Abstract: Disclosed embodiments provide systems, methods, and techniques for code parsing and lineage detection. According to disclosed embodiments, a code parser acquires one or more parameters, which at least include a first parameter that identifies source code. The code parser also acquires the source code from the first parameter. After acquiring the source code, the code parser parses the source code and generates an output of the parsed source code. The code parser may then generate and display an output of the parsed source code.

Abstract: A method of determining a time of arrival (ToA) of a wireless transmission includes: sampling a signal received in a wireless transmission to generate first data in a time domain, performing a FFT on the first data to generate second data in a frequency domain, dividing the second data by a reference signal to obtain a channel frequency response, performing and IDFT on the channel frequency response to obtain a channel impulse response, determining a peak in the channel impulse response; and determining the ToA based on the peak.

Abstract: A receiver configured to receive a frequency-modulated transmission having a preamble and a corresponding method are provided, the receiver having a buffer coupled to an input terminal for receiving the transmission, a time-to-frequency transformer coupled to the buffer, an energy aggregator coupled to the transformer, a preamble detector coupled to the aggregator, and a symbol synchronizer coupled to the detector; the method including receiving a sequence of time-domain frequency-modulated samples, transforming the sequence of time-domain samples into a spectrum of frequency-domain data, and matching an actual energy distribution over a plurality of discrete frequencies in the frequency-domain data with an expected energy distribution of the preamble to determine frequency error.

Abstract: A receiver configured to receive a frequency-modulated transmission having a preamble and a corresponding method are provided, the receiver having a buffer coupled to an input terminal for receiving the transmission, a time-to-frequency transformer coupled to the buffer, an energy aggregator coupled to the transformer, a preamble detector coupled to the aggregator, and a symbol synchronizer coupled to the detector; the method including receiving a sequence of time-domain frequency-modulated samples, transforming the sequence of time-domain samples into a spectrum of frequency-domain data, and matching an actual energy distribution over a plurality of discrete frequencies in the frequency-domain data with an expected energy distribution of the preamble to determine frequency error.

Abstract: A receiver configured to receive a frequency-modulated transmission having a preamble and a corresponding method are provided, the receiver having a buffer coupled to an input terminal for receiving the transmission, a time-to-frequency transformer coupled to the buffer, an energy aggregator coupled to the transformer, a preamble detector coupled to the aggregator, and a symbol synchronizer coupled to the detector; the method including receiving a sequence of time-domain frequency-modulated samples, transforming the sequence of time-domain samples into a spectrum of frequency-domain data, and matching an actual energy distribution over a plurality of discrete frequencies in the frequency-domain data with an expected energy distribution of the preamble to determine frequency error.

Abstract: The disclosure provides a roller conveying device, comprising: a base, a plurality of electric rollers, a left blanking plate and a right blanking plate. the two ends of the left blanking plate and the right blanking plate are provided with a block respectively; the left and right sides of the block are accommodated in the through grooves of the left blanking plate and the right blanking plate respectively; the left and right sides of the block are provided with a recessed cavity respectively; the two ends of the left blanking plate and the right blanking plate are provided with a baffle plate respectively, and the baffle plates of the left blanking plate and the right blanking plate are respectively accommodated in the recessed cavities on the left and right sides of the block to limit the movement of the block, thereby limiting the movement of the base.

Abstract: A unified device for adjacent and non-adjacent channels/carriers for processing Physical layer Protocol Data Units (PPDUs) includes a dual-use configuration capable of processing either 80+80 Megahertz (MHz) PPDUs with a single spatial stream (160/80+80 MHz 1×1) or 80 MHz PPDUs with two spatial streams (80 MHz 2×2).

Abstract: The disclosure provides a roller conveying device, comprising: a base, a plurality of electric rollers, a left blanking plate and a right blanking plate. the two ends of the left blanking plate and the right blanking plate are provided with a block respectively; the left and right sides of the block are accommodated in the through grooves of the left blanking plate and the right blanking plate respectively; the left and right sides of the block are provided with a recessed cavity respectively; the two ends of the left blanking plate and the right blanking plate are provided with a baffle plate respectively, and the baffle plates of the left blanking plate and the right blanking plate are respectively accommodated in the recessed cavities on the left and right sides of the block to limit the movement of the block, thereby limiting the movement of the base.

Abstract: The disclosure relates to a novel automatic roller shaft transmission device, which comprises a roller shaft seat and a plurality of roller shafts; the roller shaft seat comprises a roller shaft mounting base, front and rear tips and left and right side covers, a roller shaft mounting cavity is formed in an upper surface of the roller shaft mounting base, and the roller shafts are mounted in the roller shaft mounting cavity in a rotating manner; the front and rear tips are arranged at front and rear ends of the roller shaft mounting base respectively, at least one tip forms a split structure with the roller shaft mounting base, a stamping mounting groove is formed in its bottom surface, and the side covers are provided with stamping connecting parts.

Abstract: Methods, systems, and apparatuses (including, but not limited to portable devices and modem chips) for generating an error-check on the header of a medium access control (MAC) protocol data unit (PDU) (MPDU). This error-check is then inserted, at least in part, in the MAC header and/or the PHY layer PDU (PPDU) which will contain the MPDU. A separate indicator can be used to indicate whether any particular MAC frame has an error-check for its MAC header. Upon reception, the header of the MAC frame is processed and checked against the error-check inserted on the transmission side in order to determine whether the MAC header has an error.

Abstract: Managing access to a time-slotted communications medium by masking interrogatory codes that are contained in signals demarcating time slots of the medium and comparing the masked interrogatory codes against masked response codes. Access to the medium is dependent on the outcome of these comparisons.

Abstract: An apparatus and method for an interleaver and a tone mapper are provided. The apparatus for the interleaver includes a register, including an input, a first output, a second output, a third output, and a fourth output; a first interleaver block, including an input and an output; a second interleaver block, including an input and an output; a third interleaver block, including an input and an output; a fourth interleaver block, including an input and an output; a matrix, including a first input connected to the output of the first interleaver block, a second input connected to the output of the second interleaver block, a third input connected to the output of the third interleaver block, a fourth input connected to the output of the fourth interleaver block, and an output; and a permuter, including an input connected to the output of the matrix, and an output.

Abstract: This invention is related to a low-complexity MIMO detector in a wireless communication system with near optimal performance. An initial symbol estimation is performed for a received symbol vector. The soft information of the received symbol vector can be more accurately calculated using every candidate symbol vector of a combined set of candidate symbol vectors, wherein the combined set is generated based on the initial estimation. By combining aspects of both the linear detection and the ML detection, the complexity of the proposed detector becomes orders of magnitude lower than that of a ML detector, but the performance is very close to that of an ML detector.

Abstract: This invention is related to a low-complexity MIMO detector in a wireless communication system with near optimal performance. An initial symbol estimation is performed for a received symbol vector. The soft information of the received symbol vector can be more accurately calculated using every candidate symbol vector of a combined set of candidate symbol vectors, wherein the combined set is generated based on the initial estimation. By combining aspects of both the linear detection and the ML detection, the complexity of the proposed detector becomes orders of magnitude lower than that of a ML detector, but the performance is very close to that of an ML detector.

Abstract: Methods and apparatus are provided for receiving packets on a channel of an Orthogonal Frequency Division Multiplexing (OFDM) system. A time shift value for a packet is estimated using a channel estimation and an FFT size. A synchronization position of the packet on a channel is adjusted using the estimated time shift value, and a filter is applied to the adjusted channel to generate a smoothed channel estimate. Alternatively, a channel with a corrected packet synchronization position is estimated, and a smoothed channel is estimated by applying a filter to the estimated channel. Packets are received on the channel, at a receiver of the OFDM receiving apparatus, in accordance with the estimated smoothed channel.

Abstract: A method for wirelessly communicating Physical Protocol Data Units (PPDUs) in a network is provided. The method includes assigning a group IDentifier (ID) in at least one first subfield of an existing field of a Multiple User-Multiple-In-Multiple-Out (MU-MIMO) PPDU supporting multiplexing over a spatial domain, the group ID indicating a group of Stations (STAs) of which each STA includes a set of PDUs in the MU-MIMO PPDU; differentiating the MU-MIMO PPDU as one of a Frequency Multiplexed (FM)-MU PPDU and a Spatial Multiplexed (SM)-MU PPDU; and defining at least one second subfield of the existing field of the MU-MIMO PPDU as user Bandwidth (BW) subfield indicating a number of sub-channels allocated for each STA in the group of STAs. The number of sub-channels allocated to each STA indicates a position in a multiplexing order for each STA in the group of STAs.

Abstract: Managing access to a time-slotted communications medium by masking interrogatory codes that are contained in signals demarcating time slots of the medium and comparing the masked interrogatory codes against masked response codes. Access to the medium is dependent on the outcome of these comparisons.

Abstract: This invention is related to a low-complexity MIMO detector in a wireless communication system with near optimal performance. Initial symbol estimation is performed for a transmitted symbol vector. The soft information of the transmitted symbol vector can be more accurately calculated by deemphasizing the LLRs associated with symbols belonging to weak channels that may suffer from poor initial estimation. By combining aspects of both the linear detection and the ML detection, the complexity of the proposed detector becomes orders of magnitude lower than that of a ML detector, but the performance is very close to that of an ML detector.