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公开(公告)号：US20210242894A1
公开(公告)日：2021-08-05
申请号：US17138850
申请日：2020-12-30
Applicant: Silicon Laboratories Inc.
Inventor： Hendricus de Ruijter
Abstract: An apparatus includes a radio-frequency (RF) receiver for receiving RF signals. The RF receiver includes a plurality of modulation signal detectors (MSDs) to generate a plurality of detection signals when a plurality of RF signals modulated using a plurality of modulation schemes are detected. The RF receiver further includes a controller to cause reception of the plurality of RF signals in response to the plurality of detection signals.
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公开(公告)号：US20190268190A1
公开(公告)日：2019-08-29
申请号：US16411256
申请日：2019-05-14
Applicant: Silicon Laboratories, Inc.
Inventor： Hendricus de Ruijter
Abstract: A system for automatically detecting the PHY mode based on the incoming preamble is disclosed. The system includes a multimode demodulator, which includes a preamble detector and a demodulator. The preamble detector is used to determine when the preamble has been received and the PHY mode being used by the sending node. An indication of the PHY mode is supplied to the demodulator, which then decides the incoming bit stream in accordance with the detected PHY mode. In some embodiments, one demodulator, capable of decoding the bit stream in accordance with a plurality of PHY modes is employed. In other embodiments, the system includes a plurality of demodulators, where each is dedicated to one PHY mode.
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公开(公告)号：US20190268031A1
公开(公告)日：2019-08-29
申请号：US16410055
申请日：2019-05-13
Applicant: Silicon Laboratories Inc.
Inventor： Hendricus de Ruijter , Ping Xiong
Abstract: A method for operating a communications system includes transmitting a preamble sequence including a plurality of tones. Each tone of the plurality of tones has a first characteristic and a second characteristic. The first characteristic of each of the tones of the plurality of tones has a predetermined relative relationship to the first characteristic of each of the other tones of the plurality of tones and the second characteristic of each of the tones of the plurality of tones has a predetermined relative relationship to the second characteristic of each of the other tones of the plurality of tones. The first and second characteristics may include relative power and relative phase.
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公开(公告)号：US10333750B2
公开(公告)日：2019-06-25
申请号：US15237137
申请日：2016-08-15
Applicant: Silicon Laboratories, Inc.
Inventor： Hendricus de Ruijter
Abstract: A system for automatically detecting the PHY mode based on the incoming preamble is disclosed. The system includes a multimode demodulator, which includes a preamble detector and a demodulator. The preamble detector is used to determine when the preamble has been received and the PHY mode being used by the sending node. An indication of the PHY mode is supplied to the demodulator, which then decides the incoming bit stream in accordance with the detected PHY mode. In some embodiments, one demodulator, capable of decoding the bit stream in accordance with a plurality of PHY modes is employed. In other embodiments, the system includes a plurality of demodulators, where each is dedicated to one PHY mode.
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25.发明申请公开(公告)号：US20180159679A1
公开(公告)日：2018-06-07
申请号：US15868855
申请日：2018-01-11
Applicant: Silicon Laboratories Inc.
Inventor： Hendricus de Ruijter , Wentao Li , Lauri Mikael Hintsala
CPC classification number: H04L7/042 , H04J3/0658 , H04L69/22 , H04W4/80 , H04W52/0229 , Y02D70/00 , Y02D70/10 , Y02D70/14 , Y02D70/142 , Y02D70/144 , Y02D70/22
Abstract: An apparatus includes a radio frequency (RF) receiver to receive packets. The RF receiver includes first and second synchronization field detectors (SFDs). The first and second SFDs detect synchronization headers generated using first and second physical layer (PHY) modes, respectively.
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Patent Agency Ranking
26.发明申请Apparatus for Receiver With Multi-Bit Observation Interval and Associated Methods 审中-公开具有多位观测间隔和相关方法的接收机装置公开(公告)号：US20160353398A1
公开(公告)日：2016-12-01
申请号：US15164363
申请日：2016-05-25
Applicant: Silicon Laboratories Inc.
Inventor： Hendricus de Ruijter , Ping Xiong , Wentao Li
CPC classification number: H04W56/001 , H04J3/1605 , H04L27/22 , H04L43/028 , H04W4/70 , H04W74/0833
Abstract: An apparatus includes a radio frequency (RF) receiver having a multi-bit observation interval. The RF receiver includes a Coordinate Rotation Digital Computer (Cordic) circuit to receive a complex signal derived from RF signals and to generate a phase signal. The RF receiver further includes a timing correlator and frequency offset estimator coupled to receive data derived from a frequency signal derived from the phase signal. The RF receiver in addition includes a Viterbi decoder coupled to provide decoded data derived from the frequency signal.
Abstract translation: 一种装置包括具有多位观察间隔的射频（RF）接收机。 RF接收机包括坐标旋转数字计算机（Cordic）电路，用于接收从RF信号得到的复数信号并产生相位信号。 RF接收机还包括定时相关器和频率偏移估计器，其被耦合以接收从从相位信号导出的频率信号导出的数据。 RF接收机另外包括维特比解码器，其被连接以提供从频率信号导出的解码数据。
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公开(公告)号：US20150131683A1
公开(公告)日：2015-05-14
申请号：US14080405
申请日：2013-11-14
Applicant: Silicon Laboratories Inc.
Inventor： Hendricus de Ruijter , Wentao Li
CPC classification number: G06F13/4295 , H04J3/1605 , H04L27/22 , H04W56/00
Abstract: A receiver includes first, second, and third signal processors and a controller. The first signal processor provides a first signal in response to detecting a first attribute of a received signal. The second signal processor provides a second signal in response to detecting a second attribute of the received signal. The third signal processor provides a third signal in response to detecting a third attribute of the received signal and provides packet data. The controller enables the first signal processor in response to a receive enable signal, controls the third signal processor to provide the packet data in response to receiving the first signal and the third signal, and initializes the first signal processor and the third signal processor in response to receiving the first signal and the second signal.
Abstract translation: 接收机包括第一，第二和第三信号处理器和控制器。 第一信号处理器响应于检测到接收信号的第一属性而提供第一信号。 第二信号处理器响应于检测到接收信号的第二属性而提供第二信号。 第三信号处理器响应于检测到接收信号的第三属性而提供第三信号并提供分组数据。 控制器响应于接收使能信号使第一信号处理器响应于第一信号和第三信号而控制第三信号处理器提供分组数据，并响应于初始化第一信号处理器和第三信号处理器 以接收第一信号和第二信号。
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28.发明申请公开(公告)号：US20150092586A1
公开(公告)日：2015-04-02
申请号：US14500382
申请日：2014-09-29
Applicant: Silicon Laboratories Inc.
Inventor： Hendricus de Ruijter , Wentao Li
CPC classification number: H04W24/08 , H04L27/106 , H04L27/12 , H04L27/148
Abstract: A receiver includes an analog receiver and a digital processor. The analog receiver has an input for receiving a radio frequency (RF) signal, and an output for providing a digital intermediate frequency signal. The digital processor has an input for receiving the digital intermediate frequency signal, and an output for providing digital symbols. The digital processor measures peak-to-peak frequency deviation of the digital intermediate frequency signal, and performs a digital signal processing function on the digital intermediate frequency signal to provide the digital symbols based on the peak-to-peak frequency deviation so measured.
Abstract translation: 接收机包括模拟接收机和数字处理器。 模拟接收机具有用于接收射频（RF）信号的输入端和用于提供数字中频信号的输出端。 数字处理器具有用于接收数字中频信号的输入端和用于提供数字符号的输出端。 数字处理器测量数字中频信号的峰 - 峰频偏，并对数字中频信号执行数字信号处理功能，以便根据如此测量的峰 - 峰频偏提供数字符号。
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公开(公告)号：US12200761B2
公开(公告)日：2025-01-14
申请号：US17532343
申请日：2021-11-22
Applicant: Silicon Laboratories Inc.
Inventor： Hendricus de Ruijter
IPC: H04W74/0808
Abstract: A wireless network device configured to monitor multiple channels for clear channel assessment (CCA) is disclosed. The receiver circuit of the network device comprises at least one CCA block, which is used to indicated whether a particular channel is clear. In certain embodiments, the network device checks each channel sequentially, and if both channels are free, transmits at least one packet. The at least one packet may include a MODE SWITCH packet and a second packet sent using the new PHY mode. The network device may also have multiple CCA blocks. In this scenario, the channels may be checked concurrently, and if both channels are free, the network device transmits at least one packet. Alternatively, the network device monitors multiple channels concurrently and selected one of the channels on which to transmit a preferred PHY mode, thereby avoiding the need for a MODE SWITCH packet.
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公开(公告)号：US20240039557A1
公开(公告)日：2024-02-01
申请号：US17873844
申请日：2022-07-26
Applicant: Silicon Laboratories Inc.
Inventor： Hendricus de Ruijter
IPC: H03M13/11
CPC classification number: H03M13/116
Abstract: A system and method for detecting the preamble of a wireless packet is disclosed. The system utilizes one or more received fragments as inputs to a correlator, forming correlator content inside the correlator memory. After every sample from the received fragment is provided to the correlator, the correlator then compares the correlator content to a known pattern pre-programmed as a set of correlation coefficients. The correlation coefficients may not align with the correlator content because the symbol boundaries are not known a-priori. By cyclic rotation of the correlation coefficients relative to the correlator content, or cyclic rotation of the correlator content relative to the known correlation coefficients, a match with one or more preamble symbols may be found. This technique may be used to reduce power during the preamble detection process. Alternatively, this technique can also be used for antenna diversity, multi PHY and multichannel applications.
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