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81. 发明授权

US11483183B1 Blind method of equalizing signals in filter bank multi-carrier communications 有权
公开(公告)号：US11483183B1
公开(公告)日：2022-10-25
申请号：US17497184
申请日：2021-10-08
申请人： King Abdulaziz University
发明人： Muhammad Moinuddin , Ubaid M. Al-Saggaf , Jawwad Ahmad , Asmaa Ubaid Al-Saggaf , Mohammad S. Alhazmi
IPC分类号： H04L25/03 , H04L27/26 , H04L25/02
摘要： A device, method, and non-transitory computer readable medium to perform a method of blind equalization implemented by a filter bank multi-carrier with offset quadrature amplitude modulation (FBMC-OQAM) transmission system. A first matrix W is obtained by dividing a second matrix V by a receiver waveform matrix G. The second matrix V is obtained by calculating a total objective function J until the total objective function J is either constant or below a threshold error margin. The calculation of the total objective function J includes iterating calculations with a plurality of combination of a frequency bin p and a time slot q. Weights of the obtained first matrix W are applied to an equalizer. A received signal in the equalizer is processed using the applied weights. The weights of the obtained first matrix W are configured to minimize a total outage probability Pout, TOTAL.

82. 发明授权

US11483180B2 Configuration of sounding reference signal resource for multi-panel uplink transmission 有权
公开(公告)号：US11483180B2
公开(公告)日：2022-10-25
申请号：US17259207
申请日：2019-07-23
申请人： Qualcomm Incorporated , Qiaoyu Li , Yu Zhang , Chao Wei , Chenxi Hao , Liangming Wu , Hao Xu
发明人： Qiaoyu Li , Yu Zhang , Chao Wei , Chenxi Hao , Liangming Wu , Hao Xu
IPC分类号： H04L25/02 , H04B7/0404 , H04B7/0456 , H04L5/00 , H04W8/24 , H04W72/04
摘要： A base station may determine co-phase information and uplink precoding information (e.g., user equipment (UE) precoder information) based on one or more received sounding reference signals (SRSs) from a UE. The UE may adjust precoders or co-phase for different SRS transmissions over the one or more configured SRS resources. As such, the base station may indicate either co-phase information or uplink precoding information via an SRS resource indicator (SRI), and may transmit an explicit indication of the remaining co-phase information or uplink precoding information in addition to the SRI. In other examples (e.g., when only a single SRS resource is configured), the base station may transmit an index corresponding to uplink precoding information, as well as a separate indication of co-phase information. In some cases, a port selection pattern may be included with an explicit indication, indicating a selection of antenna port indices the precoder or co-phase index applies to.

83. 发明授权

US11483000B2 Interface circuit and interface device 有权
公开(公告)号：US11483000B2
公开(公告)日：2022-10-25
申请号：US17160888
申请日：2021-01-28
申请人： Samsung Electronics Co., Ltd.
发明人： Hwang Ho Choi , Yungeun Nam , Sodam Ju
IPC分类号： H03K3/00 , H03K5/00 , H03K5/12 , H03K5/1252 , H03K19/0185 , G11C7/10 , G11C11/4093 , H04L25/02
摘要： An interface circuit includes a first switch element connected to a first power supply node, supplying a first power supply voltage, and an output node, transmitting an output signal, and controlled by a first input signal, a second switch element connected to a second power supply node, supplying a second power supply voltage, lower than the first power supply voltage, and the output node and controlled by a second input signal, different from the first input signal, a first resistor connected between the first power supply node and the first switch element, a second resistor connected between the second power supply node and the second switch element, a first capacitor connected between the first resistor and the first switch element and charged and discharged by a first control signal, a second capacitor connected between the second resistor and the second switch element and charged and discharged by a second control signal, and a buffer circuit configured to output the first control signal and the second control signal and connected to a third power supply node, supplying a third power supply voltage, through a first variable resistor and connected to a fourth power supply node, supplying a fourth power supply voltage, lower than the third power supply node, through a second variable resistor.

84. 发明申请

US20220337458A1 MULTI-LEVEL SIGNAL TRANSMITTER AND METHOD THEREOF 有权
公开(公告)号：US20220337458A1
公开(公告)日：2022-10-20
申请号：US17233597
申请日：2021-04-19
申请人： Realtek Semiconductor Corp.
发明人： Ting-Hsu Chien , Chia-Liang (Leon) Lin
IPC分类号： H04L25/03 , H04L25/02 , H04L25/49
摘要： A multi-level signal transmitter includes an encoder figured to receive an input data and output a plurality of logical signal sets, each of said plurality of logical signal sets comprising a plurality of logical signals; and a plurality of tree-structured drivers configured to receive said plurality of logical signal sets, respectively, and jointly establish an output voltage at an output node, wherein each of said tree-structure drivers comprises a plurality of inverters configured to receive said plurality of logical signals of its respective logical signal set and jointly establish a joint voltage at a bifurcation node via coupling to the bifurcation node through a plurality of first-level weighting resistors, and a second-level weighting resistor configured to couple the bifurcation node to the output node.

85. 发明授权

US11477809B2 Techniques for channel estimation 有权
公开(公告)号：US11477809B2
公开(公告)日：2022-10-18
申请号：US16380734
申请日：2019-04-10
申请人： QUALCOMM Incorporated
发明人： Seyedkianoush Hosseini , Wanshi Chen , Peter Gaal
IPC分类号： H04L25/02 , H04W72/12
摘要： Techniques are described herein for performing channel estimation for both uplink and downlink channels. Additional reference signals may be allocated or assigned to various resource elements (REs) of a transmission time interval (TTI). The receiving device (e.g., a base station or a user equipment (UE)) may be configured to use the additional reference signals during channel estimation. The use of additional reference signals may improve the accuracy of the channel estimations. In downlink communications, a base station may allocate one or more channel state information reference signals (CSI-RSs) to a port of a UE. In uplink communications, a UE may transmit several sounding reference signals (SRSs) in a group.

86. 发明授权

US11477052B2 OFDM channel estimation 有权
公开(公告)号：US11477052B2
公开(公告)日：2022-10-18
申请号：US17255398
申请日：2019-06-26
申请人： Nordic Semiconductor ASA
发明人： Kjell Östman
IPC分类号： H04L25/02 , H04L5/00
摘要： A radio receiver of a radio communication system is configured to tune to a radio channel by generating a periodic signal, mixing the periodic signal with radio signals received from a radio transmission system and passing the mixed signal through a channel filter. The radio receiver receives, from the radio transmission system, an OFDM data signal modulated on a set of OFDM subcarriers within the tuned channel. The channel filter has a passband that is wider than the channel bandwidth of the tuned channel such that the filter passes i) said OFDM data signal, ii) an in-channel reference signal, and iii) an out-of-channel reference signal. The radio receiver comprises channel estimation logic configured to use both reference signals to calculate a channel estimate for an OFDM subcarrier within the tuned channel.

87. 发明授权

US11476893B2 Transmission device, transmission method, and communication system 有权
公开(公告)号：US11476893B2
公开(公告)日：2022-10-18
申请号：US17008159
申请日：2020-08-31
申请人： Sony Group Corporation
发明人： Hiroaki Hayashi
IPC分类号： H04B3/06 , H04B3/04 , H04L25/02 , H04L25/03 , H04L25/49
摘要： A transmission device of the present disclosure includes: a driver unit that transmits a data signal with use of a first voltage state, a second voltage state, and a third voltage state interposed between the first voltage state and the second voltage state, and is configured to make a voltage in the third voltage state changeable; and a controller that changes the voltage in the third voltage state to cause the driver unit to perform emphasis.

88. 发明授权

US11476189B2 Resonant inductive-capacitive isolated data channel 有权
公开(公告)号：US11476189B2
公开(公告)日：2022-10-18
申请号：US17120123
申请日：2020-12-12
申请人： Texas Instruments Incorporated
发明人： Klaas De Haan , Mikhail Valeryevich Ivanov , Tobias Bernhard Fritz , Swaminathan Sankaran , Thomas Dyer Bonifield
IPC分类号： H01L23/522 , H01L23/50 , H04L25/02 , H01L21/50
摘要： An electronic device has a substrate and first and second metallization levels with a resonant circuit. The first metallization level has a first dielectric layer on a side of the substrate, and a first metal layer on the first dielectric layer. The second metallization level has a second dielectric layer on the first dielectric layer and the first metal layer, and a second metal layer on the second dielectric layer. The electronic device includes a first plate in the first metal layer, and a second plate spaced apart from the first plate in the second metal layer to form a capacitor. The electronic device includes a winding in one of the first and second metal layers and coupled to one of the first and second plates in a resonant circuit.

89. 发明申请

US20220330302A1 MINIMUM SCHEDULING DELAY SIGNALING 有权
公开(公告)号：US20220330302A1
公开(公告)日：2022-10-13
申请号：US17846370
申请日：2022-06-22
申请人： QUALCOMM Incorporated
发明人： Peter Pui Lok ANG , Joseph Binamira SORIAGA , Huilin XU , Heechoon LEE , Hari SANKAR
IPC分类号： H04W72/12 , H04W72/04 , H04W80/02 , H04L5/00 , H04L25/02 , H04L1/00 , H04W76/27
摘要： Certain aspects of the present disclosure generally relate to methods and apparatus for minimum scheduling delay signaling.

90. 发明申请

US20220330166A1 BEAM INDICATION FOR UPLINK POWER CONTROL 有权
公开(公告)号：US20220330166A1
公开(公告)日：2022-10-13
申请号：US17724887
申请日：2022-04-20
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Ravikiran NORY , Stephen GRANT , Claes TIDESTAV , Niklas WERNERSSON
IPC分类号： H04W52/14 , H04B7/06 , H04L5/00 , H04L25/02 , H04W52/24 , H04W52/42 , H04W56/00 , H04W72/04
摘要： A user equipment (UE) being configured to receive a downlink (DL) information, determine a spatial association for an uplink (UL) transmission based on the DL information, and determine UL power control (PC) parameters based on the DL information.

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