Abstract: The present disclosure relates to a data driving device and a method of driving the data driving device and, more particularly, to a data driving device and a method of driving the same in which a tuning of a set value of an internal circuit is automatically performed.
Type:
Grant
Filed:
April 19, 2021
Date of Patent:
June 6, 2023
Assignee:
SILICON WORKS CO., LTD.
Inventors:
Do Seok Kim, Yong Hwan Mun, Myung Yu Kim, Hyun Pyo Cho
Abstract: Embodiments of the present disclosure utilizes the natural properties of RFI noise on a wireline link. Since differential RFI noise in the system has some correlation with the common mode noise on the cable, a replica of RFI noise can be regenerated by an adaptive filter based on information about the common mode noise. The replica RFI is subtracted from the equalizer output prior to the data decision circuitry or slicer. In this method, the system does not require expensive cable, nor does the equalizer suffer additional loss due to an RFI notch filter. Since RFI can be detected and mitigated, this information can also be coupled to safety systems to increase functional safety under high EMI conditions.
Type:
Grant
Filed:
January 19, 2021
Date of Patent:
June 6, 2023
Assignee:
Axonne Inc.
Inventors:
William Lo, Hiroshi Takatori, Kenneth Thet Zin Oo
Abstract: An apparatus and method for broadcast signal frame using a bootstrap and a preamble are disclosed. An apparatus for generating broadcast signal frame according to an embodiment of the present invention includes a time interleaver configured to generate a time-interleaved signal by performing interleaving on a BICM output signal; and a frame builder configured to generate a broadcast signal frame including a bootstrap and a preamble using the time-interleaved signal.
Type:
Grant
Filed:
December 2, 2021
Date of Patent:
May 23, 2023
Assignee:
Electronics and Telecommunications Research Institute
Inventors:
Sung-Ik Park, Jae-Young Lee, Sun-Hyoung Kwon, Heung-Mook Kim
Abstract: The present invention enables an apparatus or the like, which does not respond to a communication using a superposed signal, to be used in a system using the superposed signal.
Abstract: Disclosed herein are a gateway-signaling method for Multiple-Input Single-Output (MISO) operation and an apparatus for the same. An apparatus for transmitting a broadcast signal according to an embodiment of the present invention includes a predistortion unit for performing predistortion for decorrelating signals corresponding to transmitters using the number of transmitters used for MISO and a transmitter coefficient index that are identified using a timing and management packet transmitted through a Studio-to-Transmitter Link (STL), thereby generating a pre-distorted signal; and an RF signal generation unit for generating an RF transmission signal using the pre-distorted signal corresponding to the transmitter coefficient index.
Type:
Grant
Filed:
August 8, 2022
Date of Patent:
May 9, 2023
Assignee:
Electronics and Telecommunications Research Institute
Inventors:
Jae-Young Lee, Sung-Ik Park, Sun-Hyoung Kwon, Heung-Mook Kim, Nam-Ho Hur
Abstract: Provided are a memory device and a memory system including the same. The memory device may include a data bus inversion (DBI) mode selector configured to select a first multi-bit DBI signal from among a plurality of multi-bit DBI signals respectively corresponding to a plurality of DBI modes according to multi-bit data; a multi-mode DBI encoder configured to generate encoded multi-bit data by DBI encoding the multi-bit data according to the first multi-bit DBI signal; and a transceiver configured to transmit a data symbol corresponding to the encoded multi-bit data through a data channel and transmit a DBI symbol corresponding to the first multi-bit DBI signal through a DBI channel.
Type:
Grant
Filed:
December 28, 2021
Date of Patent:
April 11, 2023
Assignees:
Samsung Electronics Co., Ltd., IUCF-HYU (Industry-University Cooperation Foundation Hanyang University
Inventors:
Jaewoo Park, Youngdon Choi, Junghwan Choi, Changsik Yoo
Abstract: This disclosure provides systems, methods and apparatuses for protecting against transmit power violations in a radio unit (RU) of a disaggregated base station. For example, when a distributed unit (DU) provides frequency domain samples to the RU, the DU may set a reference input level that causes the RU scale a gain lineup to avoid saturation or sensitivity issues in a signal processing chain while ramping up to a required transmit power. Accordingly, to avoid signal saturation or clipping at the RU, the RU may monitor energy estimation measurements and take remedial action when a transmit power violation occurs. For example, the RU may provide one or more system alarms to the DU or prevent transmission over an air interface in cases where the energy estimation measurements fail to satisfy one or more thresholds.
Type:
Grant
Filed:
March 28, 2022
Date of Patent:
April 4, 2023
Assignee:
QUALCOMM Incorporated
Inventors:
Ori Auslender, Christian Oliver Thelen, Afshin Shiravi, Mark Wallace
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a base station, an indication that indicates a blockage event as a cause for a change in one or more of rank information or channel quality information, wherein the blockage event is associated with a differential signal power between a first polarization and a second polarization. The UE may receive, from the base station, a transmission based at least in part on the indication that indicates the blockage event as the cause for the change in one or more of the rank information or the channel quality information. Numerous other aspects are described.
Type:
Grant
Filed:
June 3, 2021
Date of Patent:
April 4, 2023
Assignee:
QUALCOMM Incorporated
Inventors:
Vasanthan Raghavan, Iyab Issam Sakhnini, Tao Luo, Junyi Li
Abstract: Apparatus, methods, and computer-readable media are disclosed herein for facilitating spatial misalignment tracking for OAM beams in millimeter wave and higher frequency bands. An example method for wireless communication at a first communication device includes receiving, from a second communication device, a first misalignment tracking RS and a second misalignment tracking RS for an OAM transmission. The example method also includes determining a misalignment based on the first misalignment tracking RS, the second misalignment tracking RS, and using a subset of antenna elements of an antenna array of the first communication device. Additionally, the example method includes adjusting reception of a subsequent OAM transmission from the second communication device at the antenna array of the first communication device.
Type:
Grant
Filed:
June 18, 2021
Date of Patent:
March 28, 2023
Assignee:
QUALCOMM Incorporated
Inventors:
Shay Landis, Ran Berliner, Yehonatan Dallal, Assaf Touboul, Idan Michael Horn, Amit Bar-Or Tillinger
Abstract: A machine learning (ML) agent operates at a transmitter to optimize signals transmitted across a communications channel. A physical signal modifier modifies a physical layer signal prior to transmission as a function of a set of signal modification parameters to produce a modified physical layer signal. The ML agent parses a feedback signal from a receiver across the communications channel, and determines a present tuning status as a function of the signal modification parameters and the feedback signal. The ML agent generates subsequent signal modification parameters based on the present tuning status and a set of stored tuning statuses, thereby updating the physical signal modifier to generate a subsequent modified physical layer signal to be transmitted across the communications channel.
Type:
Grant
Filed:
February 11, 2022
Date of Patent:
March 21, 2023
Assignee:
Northeastern University
Inventors:
Salvatore D'Oro, Tommaso Melodia, Francesco Restuccia
Abstract: Disclosed are techniques for wireless communication. In an aspect, a wireless device determines a symbol configuration for transmission of SC-FDE waveform with zero gaps arranged between a communication channel part, RS part, and CP part. The SC-FDE waveform is transmitted to another wireless device, which processes the SC-FDE waveform.
Abstract: A user equipment for wireless communications includes a memory configured to store a peak reduction tone (PRT) table and a processor configured to retrieve a plurality of PRT sequences from the PRT table. The plurality of PRT sequences includes a first PRT sequence based upon a first data rate and a second PRT sequence based upon a second data rate. The second data rate is larger than the first data rate, and the second PRT sequence is a subset of the first PRT sequence. The user equipment also includes a power amplifier operable to transmit data with the first PRT sequence according to the first data rate or with the second PRT sequence according to the second data rate.
Abstract: Facilitating sparsity adaptive feedback in the delay doppler domain in advanced networks (e.g., 4G, 5G, 6G, and beyond) is provided herein. Operations of a method can comprise determining, by a first device comprising a processor, a channel covariance matrix in a time-frequency domain based on a channel estimation associated with reference signals received from a second device. The method also can comprise decomposing, by the first device, the channel covariance matrix into a group of component matrices. Further, the method can comprise transforming, by the first device, respective matrices of the group of component matrices into respective covariance matrices in a delay doppler domain. The method also can comprise determining, by the first device, channel state information feedback in the delay doppler domain.
Abstract: A signal generation method is used in a transmission device that transmits a plurality of transmission signals from a plurality of antennas at the same frequency and at the same time, in the case where larger power change is performed on a first transmission signal than on a second transmission signal during generation process of the first transmission signal and the second transmission signal, the first transmission signal and the second transmission signal are mapped before the power change such that a minimum Euclidian distance between possible signal points for the first signal is longer than a minimum Euclidian distance between possible signal points for the second signal.
Abstract: Disclosed herein are a gateway-signaling method for frequency/timing offsets and an apparatus for the same. An apparatus for transmitting a broadcast signal according to an embodiment of the present invention includes a frequency/timing decision unit for determining a center frequency to which a frequency offset is applied using a carrier offset, which is identified using a timing and a management packet transmitted through a Studio-to-Transmitter Link (STL); and an RF signal generation unit for generating an RF signal to be transmitted, which corresponds to the center frequency.
Type:
Grant
Filed:
May 3, 2022
Date of Patent:
January 24, 2023
Assignee:
Electronics and Telecommunications Research Institute
Inventors:
Jae-Young Lee, Sung-Ik Park, Sun-Hyoung Kwon, Heung-Mook Kim, Nam-Ho Hur
Abstract: Generating, during a first and second signaling interval, an aggregated data signal by forming a linear combination of wire signals received in parallel from wires of a multi-wire bus, wherein at least some of the wire signals undergo a signal level transition during the first and second signaling interval; measuring a signal skew characteristic of the aggregated data signal; and, generating wire-specific skew offset metrics, each wire-specific skew offset metric based on the signal skew characteristic.
Type:
Grant
Filed:
February 15, 2022
Date of Patent:
January 24, 2023
Assignee:
KANDOU LABS, S.A.
Inventors:
Roger Ulrich, Armin Tajalli, Ali Hormati, Richard Simpson
Abstract: System and methods for shaped single carrier orthogonal frequency division multiplexing with low peak to average power ratio are provided. The system receives an input signal and modulates the input signal to form Dirichlet kernels in a time domain to generate an offset Dirichlet kernel output time array where each Dirichlet kernel has a main lobe and a plurality of side lobes. Modulating the input signal suppresses a peak to average power ratio of the offset Dirichlet kernel output time array by reducing the plurality of side lobes of each Dirichlet kernel and respective amplitudes of the side lobes.
Abstract: A data receiver circuit includes a summer circuit configured to receive an input signal that encodes multiple data symbols, and combine the input signal with a feedback signal to generate an equalized input signal, which is used to generate a clock signal. The data receiver circuit also includes multiple data slicer circuits that sample, using the clock signal and multiple voltage offsets, the equalized input signal to generate multiple samples of a particular data symbol. A precursor compensation circuit included in the data receiver circuit may generate an output value for the particular data symbol using the multiple samples. The data receiver circuit also includes a post cursor compensation circuit that generates the feedback signal using at least one of the multiple samples and a value of a previously received sample.
Abstract: In one embodiment, an apparatus includes: a baseband processor having a preamble generation circuit to generate a preamble for an orthogonal frequency division multiplexing (OFDM) transmission, the preamble generation circuit to generate the preamble having a first portion comprising a first plurality of symbols, each of the first plurality of symbols having a plurality of carriers, where a subset of the plurality of carriers have non-zero values, the preamble generation circuit to generate the non-zero values using a sequence of complex values selected to optimize a peak-to-average power ratio (PAPR); a digital-to-analog converter (DAC) coupled to the baseband processor to convert the first plurality of symbols to analog signals; a mixer coupled to the DAC to upconvert the analog signals to radio frequency (RF) signals; and a power amplifier coupled to the mixer to amplify the RF signals.
Abstract: Provided are a multi-carrier signal generation method, apparatus, and system. The method comprises: according to property information of a subframe, determining filter configuration information corresponding to said subframe (101); according to the filter configuration information, obtaining a multi-carrier signal of the filter bank corresponding to each of the filter configuration information (102).