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公开(公告)号：US20240178891A1
公开(公告)日：2024-05-30
申请号：US18384036
申请日：2023-10-26
申请人： Sun Patent Trust
发明人： Yutaka MURAKAMI , Tomohiro KIMURA , Mikihiro OUCHI
IPC分类号： H04B7/0456 , H04B7/04 , H04B7/0413 , H04B7/06 , H04L23/00 , H04L25/03 , H04L27/12 , H04L27/14 , H04L27/26 , H04L27/36
CPC分类号： H04B7/0469 , H04B7/04 , H04B7/0413 , H04B7/0697 , H04L23/00 , H04L25/03 , H04L27/12 , H04L27/14 , H04L27/26 , H04L27/36 , H04L27/2601 , H04W72/30
摘要： 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.
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公开(公告)号：US11784782B2
公开(公告)日：2023-10-10
申请号：US18158403
申请日：2023-01-23
申请人： Kandou Labs, S.A.
发明人： Roger Ulrich , Armin Tajalli , Ali Hormati , Richard Simpson
CPC分类号： H04L7/0016 , H04L7/0054 , H04L7/0079 , H04L7/033 , H04L25/03 , H04L25/03057 , H04L25/14 , H04L25/49 , H04L25/4904 , H04L7/0025 , H04L25/03878 , H04L2025/03356
摘要： 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.
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3.发明公开公开(公告)号：US20230171697A1
公开(公告)日：2023-06-01
申请号：US18101005
申请日：2023-01-24
申请人： LG Electronics Inc.
发明人： Eunsung PARK , Jinsoo CHOI , Hangyu CHO
CPC分类号： H04W52/0229 , H04L27/2613 , H04L27/26025 , H04L25/03 , H04W84/12 , H04W28/065 , H04L5/00 , H04L27/34 , H04L5/0053 , H04L5/0051 , Y02D30/70 , H04B7/0413
摘要： Disclosed are a method and an apparatus for generating an STF signal usable in a wireless LAN system. The STF signal is included in a field used to improve AGC estimation of a MIMO transmission. A portion of the STF signal is used to transmit an uplink, and can be used for uplink MU PPDUs transmitted from a plurality of STAs. The STF signal that is disclosed, for example, is used for a 40 MHz band or an 80 MHz band, is desirably usable for the 40 MHz band, and can be generated based on a sequence in which a predetermined M sequence is repeated. The predetermined M sequence can be a binary sequence of which the length is 15 bits.
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公开(公告)号：US20190245617A1
公开(公告)日：2019-08-08
申请号：US16387209
申请日：2019-04-17
申请人： INPHI CORPORATION
IPC分类号： H04B10/079 , H04B10/2507 , H04L25/03 , H04B10/61 , H04L27/01 , H04B10/07 , H04L5/00
CPC分类号： H04B10/0795 , H04B10/07 , H04B10/25073 , H04B10/614 , H04B10/616 , H04L5/0053 , H04L7/0058 , H04L25/03 , H04L25/03019 , H04L25/03292 , H04L25/03878 , H04L27/01
摘要： A receiver applies a calibration method to compensate for skew between input channels. The receiver skew is estimated by observing the coefficients of an adaptive equalizer which adjusts the coefficients based on time-varying properties of the multi-channel input signal. The receiver skew is compensated by programming the phase of the sampling clocks for the different channels. Furthermore, during real-time operation of the receiver, channel diagnostics is performed to automatically estimate differential group delay and/or other channel characteristics based on the equalizer coefficients using a frequency averaging or polarization averaging approach. Framer information can furthermore be utilized to estimate differential group delay that is an integer multiple of the symbol rate. Additionally, a DSP reset may be performed when substantial signal degradation is detected based on the channel diagnostics information.
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5.发明申请公开(公告)号：US20180323871A1
公开(公告)日：2018-11-08
申请号：US16024105
申请日：2018-06-29
申请人： INPHI CORPORATION
IPC分类号： H04B10/079 , H04L25/03 , H04B10/40 , H04B10/50 , H04B10/61
CPC分类号： H04B10/07955 , H04B7/005 , H04B7/0413 , H04B10/40 , H04B10/5053 , H04B10/5161 , H04B10/532 , H04B10/61 , H04B10/616 , H04L25/03 , H04L25/14
摘要： Apparatus and method for transmitter alignment in an optical communication system are provided. In certain configurations, a method of correcting for transmitter skew is provided. The method includes generating an optical signal using a transmitter based on an in-phase (I) component and a quadrature-phase (Q) component of a transmit signal, the optical signal having a baud rate that is based on a timing tone. The method further includes receiving the optical signal as an input to a receiver, and generating a signal vector representing the optical signal using the receiver. The signal vector includes an I component and a Q component. The method further includes calculating a power of the timing tone based on processing the signal vector using a tone power calculator of the receiver, and correcting for a skew of the transmitter based on the calculated power.
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6.发明申请公开(公告)号：US20180269912A1
公开(公告)日：2018-09-20
申请号：US15977056
申请日：2018-05-11
申请人： MEDIATEK INC.
发明人： Tzyuan SHIU , Sheng-Che TSENG , Shih-Chieh YEN , Chi-Yao YU
IPC分类号： H04B1/12 , H04L27/152 , H04L25/03
CPC分类号： H04B1/123 , H04B15/06 , H04L25/03 , H04L27/152
摘要： A method for avoiding inter-modulation distortion in a communications apparatus capable of supporting carrier aggregation and communicating with a peer communications apparatus in a wireless network via at least a first CC and a second CC includes: determining a frequency adjustment value for adjusting a first oscillating frequency of a first local oscillation signal utilized for processing an RF signal of the first CC or a second oscillating frequency of a second LO signal utilized for processing an RF signal of the second CC when an RF signal or a baseband signal of the second CC is interfered with by an inter-modulation distortion signal contributed by any signal component related to the first CC; and adjusting the first oscillating frequency or the second oscillating frequency according to the frequency adjustment value.
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7.发明申请公开(公告)号：US20180234269A1
公开(公告)日：2018-08-16
申请号：US15948193
申请日：2018-04-09
申请人： LG ELECTRONICS INC.
发明人： Eunsung PARK , Jinsoo CHOI , Hangyu CHO
IPC分类号： H04L25/03 , H04B7/0413 , H04W52/52 , H04W84/12
CPC分类号： H04L25/03 , H04B7/0413 , H04L5/0048 , H04L25/0224 , H04L27/2613 , H04W52/52 , H04W84/12
摘要： Disclosed are a method and an apparatus for generating an STF signal usable in a wireless LAN system. The STF signal is included in a field used to improve AGC estimation of a MIMO transmission. The STF signal that is suggested, for example, can be used for an 80 MHz band and can be generated based on a sequence in which a predetermined M sequence is repeated. Also, the disclosed STF signal can be used for a 1×STF signal from the 1×STF signal and a 2×STF signal. The predetermined M sequence can be a binary sequence of which the length is 15 bits.
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公开(公告)号：US10038498B1
公开(公告)日：2018-07-31
申请号：US15256173
申请日：2016-09-02
申请人： INPHI CORPORATION
CPC分类号： H04B10/07955 , H04B7/005 , H04B7/0413 , H04B10/40 , H04B10/50 , H04B10/5053 , H04B10/5161 , H04B10/532 , H04B10/61 , H04B10/616 , H04L25/03 , H04L25/14
摘要： Apparatus and method for transmitter alignment in an optical communication system are provided. In certain configurations, a method of correcting for transmitter skew is provided. The method includes generating an optical signal using a transmitter based on an in-phase (I) component and a quadrature-phase (Q) component of a transmit signal, the optical signal having a baud rate that is based on a timing tone. The method further includes receiving the optical signal as an input to a receiver, and generating a signal vector representing the optical signal using the receiver. The signal vector includes an I component and a Q component. The method further includes calculating a power of the timing tone based on processing the signal vector using a tone power calculator of the receiver, and correcting for a skew of the transmitter based on the calculated power.
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公开(公告)号：US10038468B2
公开(公告)日：2018-07-31
申请号：US15671408
申请日：2017-08-08
发明人： Pier A. Francese , Mangal Prasad , Hung H. Tran , Xiaobin Yuan
摘要： Embodiments relate to peaking inductor array for a peaking control unit of a transceiver. An aspect includes the peaking inductor array comprising a plurality of cells connected in parallel, each cell comprising a respective active inductor. Another aspect includes each of the plurality of cells further comprising a decoupling capacitor.
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10.发明申请公开(公告)号：US20180205579A1
公开(公告)日：2018-07-19
申请号：US15743621
申请日：2015-11-12
申请人： LG ELECTRONICS INC.
发明人： Sangrim LEE , Dongkyu KIM , Hyunsoo KO , Kwangseok NOH , Hojae LEE
CPC分类号： H04L25/03 , H04B1/525 , H04J11/0036 , H04J11/0063 , H04L5/0032 , H04L5/14 , H04L5/1461 , H04L25/0202 , H04L25/03146
摘要： A method for estimating a nonlinear self-interference channel in a wireless channel system, according to the present invention, can further comprise the steps of: applying a first sequence to a first symbol; applying, to a second symbol, a sequence of which a phase is shifted from that of the first sequence by π/2; and transmitting the first symbol and the second symbol.
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