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公开(公告)号：US11736242B2
公开(公告)日：2023-08-22
申请号：US17215405
申请日：2021-03-29
Applicant: Sony Corporation
Inventor： Martin Warwick Beale , Samuel Asangbeng Atungsiri , Shin Horng Wong
IPC: H04L1/20 , H04L1/00 , H04L1/1829 , H04L25/02 , H04W72/23
CPC classification number: H04L1/206 , H04L1/0045 , H04L1/1858 , H04L1/1864 , H04L25/0224 , H04W72/23
Abstract: A communications device includes receiver circuitry, transmitter circuitry, and controller circuitry controlling the transmitter circuitry and the receiver circuitry to receive data in accordance with an automatic repeat request (ARQ) type protocol in which the data is received as a plurality of encoded data packets encoded with an error correction code and the transmitter circuitry transmits a feedback signal depending on whether each of the data encoded packets is estimated as having been decoded successfully by the receiver circuitry. The controller circuitry is configured to evaluate a quality measure of each encoded data packet and in response to the evaluated quality measure to transmit an early indication of the feedback signal to the wireless communications network, before the encoded data packet has been decoded by the error correction decoder.
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公开(公告)号：US20230261811A1
公开(公告)日：2023-08-17
申请号：US18305307
申请日：2023-04-21
Applicant: David E. Newman , R. Kemp Massengill
Inventor： David E. Newman , R. Kemp Massengill
IPC: H04L1/20
Abstract: Message faults are an increasing problem for 5G and expected 6G networks, due to growth, crowding, and signal fading problems. Disclosed are procedures for determining which particular message element of a corrupted message is faulted, and optionally the most likely correction. A receiver can identify the faulted message element by measuring the fluctuations, in phase and amplitude, of the waveform of each message element, as well as the modulation quality, frequency offset, and other signal measurements. Faulted message elements are likely to have higher fluctuations, higher modulation deviations, and higher signal irregularities, than the unfaulted ones. Mitigation can then be applied to the faulted message elements, thereby recovering the correct message and avoiding a costly retransmission delay. AI models may enhance the fault detection sensitivity by exploiting correlations between the various waveform measurement parameters, and then may predict the corrected value of the faulted message elements.
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公开(公告)号：US20180219651A1
公开(公告)日：2018-08-02
申请号：US15460672
申请日：2017-03-16
Applicant: INNERTRON, INC.
Inventor： Jae Hyun JU , Jun Ho KANG , Hak Rae CHO , Moon Bong KO
IPC: H04L1/20
Abstract: A modular PIM analyzer includes: a first signal amplification module provided with a first signal generator for generating a first frequency signal under control of a first MCU, and a first power amplifier for generating a first amplified frequency signal through the amplification of the first frequency signal under control of a first ALC circuit; a second signal amplification module provided with a second signal generator for generating a second frequency signal under control of a second MCU, and a second power amplifier for generating a second amplified frequency signal through the amplification of the second frequency signal under control of a second ALC circuit; and a triplexer module for extracting a test frequency signal using the first amplified frequency signal and the second amplified frequency signal, transmitting the test frequency signal to a device under test, and receiving a PIM signal being reflected from the device under test
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公开(公告)号：US09992089B2
公开(公告)日：2018-06-05
申请号：US15355203
申请日：2016-11-18
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jie Lv , Xiaolong Zhang
IPC: H04B3/00 , H04B3/46 , H04B17/391 , H04L12/26 , H04B10/079 , H04L1/00 , H04L1/20 , H04Q11/00
CPC classification number: H04L43/0847 , H04B3/00 , H04B3/46 , H04B10/0793 , H04B17/391 , H04L1/0036 , H04L1/203 , H04L1/206 , H04Q11/0066 , H04Q2011/0083
Abstract: The present invention discloses a parameter obtaining method and apparatus. In this method, multiple signals are received over a communications link on a network, where each of the received signals is corresponding to a point on a complex plane; decision is performed on each of the received signals; for each of the received signals, an error signal between the received signal and a corresponding decision signal is determined; and a complex-plane distribution feature parameter used to indicate a distribution feature, on the complex plane, of the signals received over the communications link is determined according to all the determined error signals. In this method, an inaccurate maintenance result in manual analysis of a constellation diagram is avoided.
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公开(公告)号：US20180109403A1
公开(公告)日：2018-04-19
申请号：US15294680
申请日：2016-10-15
Applicant: Pranatharthi Subbaratnam Haran
Inventor： Pranatharthi Subbaratnam Haran
Abstract: A method and a Highway Addressable Remote Transducer (HART) soft modem device (SMD) for transmitting a C8PSK signal and receiving and demodulating an Analog signal in either FSK or C8PSK comprising a HART message is provided. A transmitter of HART-SMD improves efficiency by reducing the computation complexity with a novel table lookup technique. A demodulator of the HART-SMD receives the Analog signal, samples and converts the Analog signal into digital data at a predetermined digital sample rate. The demodulator implements a two-step phase estimation technique followed by a single step timing estimate to achieve an optimal operating region for the receiver so that the receiver can be ready to receive state in a very short time as required in C8PSK specifications. A simple method of doing automatic modulation classification by negating the presence of an FSK modulation by the positive assertion of the presence of C8PSK modulation, or by the absence of C8PSK Signal and the presence of Energy detect to assert the presence of FSK signal is also stated.
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Patent Agency Ranking
公开(公告)号：US09917714B2
公开(公告)日：2018-03-13
申请号：US15121893
申请日：2015-02-25
Applicant: PHASOR SOLUTIONS LIMITED
Inventor： Richard Hammond Mayo
CPC classification number: H04L27/2273 , H01Q3/26 , H04B7/08 , H04B7/0885 , H04B17/27 , H04L1/206
Abstract: Apparatus (100) is described comprising: an antenna array (1021 . . . 102N); a plurality of units (1041 . . . 104N), each unit configured to mix a radio frequency signal from one or more of the antennas (102) with oscillating signals having phases defined by a global signal and to provide in-phase and quadrature-phase signals; a constellation rotation system configured to, for each unit, rotate a constellation point associated with the in-phase and quadrature-phase signals by a rotation angle to provide adjusted in-phase and quadrature-phase signals; signal buses (106, 107) for global in-phase and quadrature-phase signals configured to receive the adjusted in-phase and quadrature-phase signals, respectively, from a plurality of the units; a feedback system configured to, for each unit, compare one or more of the adjusted in-phase and quadrature-phase signals with one or more of the global in-phase and quadrature-phase signals to determine an error in the rotation angle.
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公开(公告)号：US09893924B2
公开(公告)日：2018-02-13
申请号：US15062141
申请日：2016-03-06
Applicant: NXP B.V.
Inventor： Zahir Smail , Olivier Jamin , Carol Herve
CPC classification number: H04L27/265 , H03D3/008 , H03D3/009 , H03D2200/005 , H03D2200/006 , H04B1/0017 , H04L1/206 , H04L27/3863 , H04L27/3872 , H04L27/3881
Abstract: The disclosure relates to a module for a radio receiver. The module comprises an input terminal; an output terminal; a main signal path for communicating in-phase and quadrature signals between the input terminal and the output terminal; and a second signal path. The second signal path is connected in parallel with the main signal path and is configured to: extract in-phase and quadrature signals from the main signal path; filter the extracted in-phase and quadrature signals; detect an error in the filtered, extracted in-phase and quadrature signals; and apply a correction to in-phase and quadrature signals on the main signal path based on the error.
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公开(公告)号：US09860103B2
公开(公告)日：2018-01-02
申请号：US14663737
申请日：2015-03-20
Applicant: Samsung Electronics Co., Ltd.
Inventor： Cheolkyu Shin , Hyojin Lee , Yongjun Kwak , Younsun Kim , Youngbum Kim , Juho Lee , Hyoungju Ji
CPC classification number: H04L27/366 , H04L1/206 , H04L5/0073 , H04L27/0012 , H04L27/38
Abstract: A method for transmitting interference related control information in order to improve a reception performance of a terminal that receives a downlink in a cellular mobile communication system based on the LTE-A system includes receiving a higher layer control message including probability information of a modulation scheme for an interference signal, from a base station, and performing error-correcting coding using a probability value of a modulation scheme for an interference signal, which is included in the higher layer control message. A base station in a mobile communication system, the base station includes a controller configured to generate probability information of a modulation scheme for an interference signal, and transmit, to the terminal, a higher layer control message comprising the probability information of the modulation scheme for the interference signal.
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公开(公告)号：US09838159B2
公开(公告)日：2017-12-05
申请号：US14953931
申请日：2015-11-30
Applicant: Verizon Patent and Licensing Inc.
Inventor： Donna L. Polehn
CPC classification number: H04L1/08 , H04L1/0026 , H04L1/1835 , H04L1/206 , H04L27/06 , H04L27/22
Abstract: A method, a device, and a non-transitory storage medium having instructions to receive data and first channel information pertaining to a transmission of the data; store first constellation data and demodulate the data; determine whether any error exists pertaining to the data; receive retransmitted data and second channel information when an error exists; demodulate the retransmitted data; calculate error vector magnitude data; generate corrective constellation data based on the error vector magnitude data, the first channel information, and the second channel information, wherein the corrective constellation data includes at least one reference constellation point that is repositioned on a constellation plane relative to at least one corresponding reference constellation point of a default constellation data; and use the corrective constellation data when demodulating additional data that is subsequently received.
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公开(公告)号：US09813198B2
公开(公告)日：2017-11-07
申请号：US14506452
申请日：2014-10-03
Applicant: Aviat U.S., Inc.
Inventor： Emerick Vann , Yen-Fang Chao , Youming Qin , Roland Matian
IPC: H04L1/20 , H04L1/00 , H04B1/00 , H04B1/16 , H03C3/40 , H03D3/00 , H03D7/16 , H04B1/30 , H04L27/38 , H04B1/28 , H04B1/10
CPC classification number: H04L1/206 , H03C3/406 , H03D3/009 , H03D7/168 , H04B1/0014 , H04B1/10 , H04B1/16 , H04B1/28 , H04B1/30 , H04L1/0036 , H04L1/203 , H04L1/208 , H04L27/38 , H04L27/3854
Abstract: Various embodiments provide for systems and methods for signal conversion of one modulated signal to another modulated signal using demodulation and then re-modulation. According to some embodiments, a signal receiving system may comprise an I/Q demodulator that demodulates a first modulated signal to an in-phase (“I”) signal and a quadrature (“Q”) signal, an I/Q signal adjustor that adaptively adjusts the Q signal to increase the signal-to-noise ratio (SNR) of a transitory signal that is based on a second modulated signal, and an I/Q modulator that modulates the I signal and the adjusted Q signal to the second modulated signal. To increase the SNR, the Q signal may be adjusted based on a calculated error determined for the transitory signal during demodulation by a demodulator downstream from the I/Q modulator.
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