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1. 发明授权

US11902068B2 Method and apparatus for transmitting PLCP frame in wireless local area network system 有权
公开(公告)号：US11902068B2
公开(公告)日：2024-02-13
申请号：US17517795
申请日：2021-11-03
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Dae Won Lee , Dong Wook Roh , Byeong Woo Kang , Yong Ho Seok , Yu Jin Noh , Bong Hoe Kim
IPC分类号： H04W84/12 , H04B7/0413 , H04L27/14 , H03M5/12 , H04L27/00 , H04L25/49 , H04W28/06 , H04L27/26 , H04L1/00 , H04L27/22 , H04L27/227 , H04L27/156 , H04Q1/46 , H04L27/233 , H04L27/148 , H04L27/144 , H04N21/426
CPC分类号： H04L27/261 , H04B7/0413 , H04L1/0041 , H04L1/0061 , H04L27/22 , H04L27/2613 , H04W84/12 , H03M5/12 , H04L25/4904 , H04L27/14 , H04L27/144 , H04L27/148 , H04L27/1563 , H04L27/2273 , H04L27/2331 , H04L27/2332 , H04L27/2647 , H04L2027/0028 , H04N21/426 , H04Q1/46 , H04W28/06
摘要： A method of transmitting a Physical Layer Convergence Procedure (PLCP) frame in a Very High Throughput (VHT) Wireless Local Area Network (WLAN) system includes generating a MAC Protocol Data Unit (MPDU) to be transmitted to a destination station (STA), generating a PLCP Protocol Data Unit (PPDU) by adding a PLCP header, including an L-SIG field containing control information for a legacy STA and a VHT-SIG field containing control information for a VHT STA, to the MPDU, and transmitting the PPDU to the destination STA. A constellation applied to some of Orthogonal Frequency Division Multiplex (OFDM) symbols of the VHT-SIG field is obtained by rotating a constellation applied to an OFDM symbol of the L-SIG field.

2. 发明授权

US11804882B1 Single carrier frequency division multiple access baseband signal generation 有权
公开(公告)号：US11804882B1
公开(公告)日：2023-10-31
申请号：US17386508
申请日：2021-07-27
申请人： Genghiscomm Holdings, LLC
发明人： Steve Shattil
IPC分类号： H04B7/0452 , H04B1/00 , H04B7/026 , H04J13/00 , H04L27/26 , H04L45/24 , H04L47/10 , H04L5/00 , H04B7/0456 , H04B7/024 , H04B7/06 , H04L27/01 , H04L27/148 , H04J13/12 , H04W72/044 , H04W84/18
CPC分类号： H04B7/0452 , H04B1/0003 , H04B7/024 , H04B7/026 , H04B7/0456 , H04B7/0697 , H04J13/0003 , H04J13/004 , H04L5/0007 , H04L5/0023 , H04L5/0035 , H04L5/0037 , H04L5/0073 , H04L27/01 , H04L27/148 , H04L27/2602 , H04L27/265 , H04L27/2636 , H04L27/2646 , H04L27/2647 , H04L45/24 , H04L47/10 , H04J13/12 , H04L5/0021 , H04L27/2601 , H04L27/2614 , H04W72/046 , H04W84/18
摘要： Applications of CI processing to ad-hoc and peer-to-peer networking significantly improve throughput, network capacity, range, power efficiency, and spectral efficiency. CI-based subscriber units perform network-control functions to optimize network performance relative to channel conditions, network loads, and subscriber services. CI codes are used to identify and address network transmissions. Channel characteristics of communication links are employed to encode, address, and authenticate network transmissions. CI transceivers used as relays and routers employ unique characteristics of transmission paths to code and decode network transmissions. A central processor is adapted to perform array processing with signals received from, and transmitted by, a plurality of subscriber units in a wireless network.

3. 发明授权

US11228471B2 Matched-filter radio receiver 有权
公开(公告)号：US11228471B2
公开(公告)日：2022-01-18
申请号：US16957946
申请日：2019-01-03
申请人： Nordic Semiconductor ASA
发明人： Wei Li , Daniel Ryan
IPC分类号： H04L27/00 , H04L27/233 , H04B1/12 , H04L27/148
摘要： A digital radio receiver has a matched filter bank of filter modules for receiving phase- or frequency-modulated radio signals. Each module cross-correlates a sampled signal with a respective multi-symbol filter sequence, using a plurality of samples in each symbol period. The matched filter bank calculates first values (zn(1)), for respective symbol periods, of a cross-correlation of the sampled signal with a first complex exponential function defined at sample points over one symbol period, and calculates second values (zn(−1)), for the respective symbol periods, of a cross-correlation of the sampled signal with a second, different, complex exponential function. A set of the filter modules cross-correlates the sampled signal with their respective filter sequences using an algorithm that takes, as input, the first values (zn(1)) for symbol periods at which the respective filter sequence has a first value, and the second values (zn(−1)) for symbol periods at which the filter sequence has a second, different, value.

4. 发明授权

US11201644B2 Cooperative wireless networks 有权
公开(公告)号：US11201644B2
公开(公告)日：2021-12-14
申请号：US14727769
申请日：2015-06-01
申请人： Genghiscomm Holdings, LLC
发明人： Steve Shattil
IPC分类号： H04B7/0452 , H04B1/00 , H04B7/026 , H04J13/00 , H04L27/26 , H04L12/707 , H04L12/801 , H04L5/00 , H04B7/0456 , H04B7/024 , H04B7/06 , H04L27/01 , H04L27/148 , H04J13/12 , H04W72/04 , H04W84/18
摘要： A cooperative multi-user multiple input, multiple output (MIMO) antenna array comprises a MIMO subspace processing system communicatively coupled by a fronthaul network to a set of antennas residing on multiple ones of a plurality of geographically distributed wireless terminals in a Radio Access Network. The MIMO subspace processing system can comprise a distributed computing system. The MIMO antenna array is adapted by updating the set of antennas to produce a second set of antennas; reconfiguring the fronthaul network; selecting an updated set of distributed computing resources to perform MIMO subspace processing; and reconfiguring the MIMO subspace processing to employ channel state information of the second set to enable multiple non-interfering subspace channels occupying a common frequency.

5. 发明申请

US20210336824A1 SYNCHRONOUSLY-SWITCHED MULTI-INPUT DEMODULATING COMPARATOR 有权
公开(公告)号：US20210336824A1
公开(公告)日：2021-10-28
申请号：US17367392
申请日：2021-07-04
申请人： Kandou Labs SA
发明人： Armin Tajalli
IPC分类号： H04L27/20 , H04L25/02 , H04L25/49 , H04L27/148 , H04L27/26
摘要： Methods and systems are described for obtaining a set of carrier-modulated symbols of a carrier-modulated codeword, each carrier-modulated symbol received via a respective wire of a plurality of wires of a multi-wire bus, applying each carrier-modulated symbol of the set of carrier-modulated symbols to a corresponding transistor of a set of transistors, the set of transistors further connected to a pair of output nodes according to a sub-channel vector of a plurality of mutually orthogonal sub-channel vectors, recovering a demodulation signal from the carrier-modulated symbols, and generating a demodulated sub-channel data output as a differential voltage on the pair of output nodes based on a linear combination of the set of carrier-modulated symbols by controlling conductivity of the set of transistors according to the demodulation signal.

6. 发明授权

US11133915B2 Cable modem and digital compensation for switchable analog filter to assist echo cancellation in full duplex cable modem 有权
公开(公告)号：US11133915B2
公开(公告)日：2021-09-28
申请号：US16601611
申请日：2019-10-15
申请人： MaxLinear, Inc.
发明人： Boaz Kol , Noam Tal , Shaul Shulman , Thushara Hewavithana
IPC分类号： H04L5/14 , H04B3/21 , H04L27/00 , H04L27/148
摘要： A cable modem supporting full duplex (FDX) operations. The cable modem includes a transmit circuitry configured to process a transmit signal and a receive circuitry configured to process a receive signal. The receive circuitry includes a switchable analog filter configured to filter the receive signal. The switchable analog filter is configurable for different passband frequencies. The receive circuitry also includes a digital compensation filter configured to compensate a difference in frequency response in a specific frequency band due to switching of the switchable analog filter for a different passband frequency. The cable modem also includes an adjacent channel interference (ACI) cancellation filter and an adjacent leakage interference (ALI) cancellation filter. A digital compensation filter is also used in processing the ACI cancellation signal and the ALI cancellation signal to impose or compensate the difference in frequency response due to the switchable analog filter switching.

7. 发明授权

US10904054B2 Signal processing method and communications chip structure 有权
公开(公告)号：US10904054B2
公开(公告)日：2021-01-26
申请号：US16750200
申请日：2020-01-23
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： Mingjun Fan , Jianhua Zheng , Daiping Tang
IPC分类号： H04L27/148 , H04B1/10 , H04L25/03
摘要： This application discloses a communications chip structure, including: a channel selection module, configured to receive an input signal, where the input signal is a signal of a preset narrow bandwidth span or a signal of a preset wide bandwidth span; and a digital baseband module, configured to control the channel selection module to select a first sampling and quantification channel when the input signal is a signal of the preset narrow bandwidth span, or control the channel selection module to select a second sampling and quantification channel when the input signal is a signal of the preset wide bandwidth span. The channel selection module is further configured to send the input signal to the first sampling and quantification channel or the second sampling and quantification channel for sampling and quantification.

8. 发明申请

US20200351132A1 MATCHED-FILTER RADIO RECEIVER 审中-公开
公开(公告)号：US20200351132A1
公开(公告)日：2020-11-05
申请号：US16957946
申请日：2019-01-03
申请人： Nordic Semiconductor ASA
发明人： Wei LI , Daniel RYAN
IPC分类号： H04L27/233 , H04B1/12 , H04L27/00 , H04L27/148
摘要： A digital radio receiver has a matched filter bank of filter modules for receiving phase- or frequency-modulated radio signals. Each module cross-correlates a sampled signal with a respective multi-symbol filter sequence, using a plurality of samples in each symbol period. The matched filter bank calculates first values (zn(1)), for respective symbol periods, of a cross-correlation of the sampled signal with a first complex exponential function defined at sample points over one symbol period, and calculates second values (zn(−1)), for the respective symbol periods, of a cross-correlation of the sampled signal with a second, different, complex exponential function. A set of the filter modules cross-correlates the sampled signal with their respective filter sequences using an algorithm that takes, as input, the first values (zn(1)) for symbol periods at which the respective filter sequence has a first value, and the second values (zn(−1)) for symbol periods at which the filter sequence has a second, different, value.

9. 发明申请

US20200322194A1 SYNCHRONOUSLY-SWITCHED MULTI-INPUT DEMODULATING COMPARATOR 审中-公开
公开(公告)号：US20200322194A1
公开(公告)日：2020-10-08
申请号：US16909529
申请日：2020-06-23
申请人： Kandou Labs SA
发明人： Armin Tajalli
IPC分类号： H04L27/20 , H04L25/02 , H04L25/49 , H04L27/148 , H04L27/26
摘要： Methods and systems are described for obtaining a set of carrier-modulated symbols of a carrier-modulated codeword, each carrier-modulated symbol received via a respective wire of a plurality of wires of a multi-wire bus, applying each carrier-modulated symbol of the set of carrier-modulated symbols to a corresponding transistor of a set of transistors, the set of transistors further connected to a pair of output nodes according to a sub-channel vector of a plurality of mutually orthogonal sub-channel vectors, recovering a demodulation signal from the carrier-modulated symbols, and generating a demodulated sub-channel data output as a differential voltage on the pair of output nodes based on a linear combination of the set of carrier-modulated symbols by controlling conductivity of the set of transistors according to the demodulation signal.

10. 发明授权

US10700903B2 Circuit structure for efficiently demodulating FSK signal in wireless charging device 有权
公开(公告)号：US10700903B2
公开(公告)日：2020-06-30
申请号：US16337526
申请日：2017-07-29
申请人： WUXI CHINA RESOURCES SEMICO CO., LTD
发明人： Wenli Shu , Congyin Wang , Qiyi Zhao
IPC分类号： H04L27/144 , H04L27/156 , H04J3/04 , H02J7/02 , H04B5/00 , H04L27/148
摘要： A circuit structure for efficiently demodulating an FSK signal in a wireless charging device, comprising a data sampling module, a period point counting module, a data distribution module, and a period point processing module. An input terminal of the period point counting module is connected to an output terminal of the data sampling module; an input terminal of the data distribution module is connected to an output terminal of the period point counting module; and an input terminal of the period point processing module is connected to an output terminal of the data distribution module.

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