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公开(公告)号：US10764762B2
公开(公告)日：2020-09-01
申请号：US15724889
申请日：2017-10-04
IPC分类号： H04B3/52 , H04B3/56 , H01P3/16 , H04W88/08 , H01Q1/12 , H01P3/10 , H04W16/26 , H04B1/719 , H04B1/717 , H04B3/32 , H04B3/46 , H01Q23/00 , H01Q13/02 , H01P5/08 , H01Q21/20 , H04J3/10
摘要： Aspects of the subject disclosure may include, an access point that facilitates receiving from a system a modulated signal in a first spectral segment, wherein the system is configured to receive a plurality of ultra-wideband electromagnetic waves via a transmission medium and extract the modulated signal in the first spectral segment from a plurality of modulated signals conveyed by the plurality of ultra-wideband electromagnetic waves, and wherein the plurality of ultra-wideband electromagnetic waves operates in a second spectral segment that differs from the first spectral segment, and transmitting the modulated signal in the first spectral segment to a communication device. Other embodiments are disclosed.
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公开(公告)号：US10750441B2
公开(公告)日：2020-08-18
申请号：US16715638
申请日：2019-12-16
发明人： Frederic Nabki , Dominic Deslandes , Alexandre Desmarais , Anh-Kiet Vuong , Anis Bounif , Wang Hao , William Pham
IPC分类号： H04W52/02 , H04N9/31 , H04B1/713 , G06F3/03 , G06F1/16 , H04B1/7163 , G06F3/0482 , G06F3/042 , H04B1/717 , G03B21/26 , G03B21/00 , G06F3/0484 , H04B5/02 , G06F3/041 , G06F3/0488 , G06F3/048 , G06F3/0346 , G06F3/01 , H04B5/00
摘要： Within many applications impulse radio based ultra-wideband (IR-UWB) transmission offers significant benefits for very short range high data rate communications when compared with existing standards and protocols. In many of these applications the main design goals are very low power consumption and very low complexity design for easy integration and cost reduction. Digitally programmable IR-UWB transmitters using an on-off keying modulation scheme on a 0.13 microns CMOS process operating on 1.2V supply and yielding power consumption as low as 0.9 mW at a 10 Mbps data rate with dynamic power control are enabled. The IR-UWB transmitters support new frequency hopping techniques providing more efficient spectrum usage and dynamic allocation of the spectrum when transmitting in highly congested frequency bands. Biphasic scrambling is also introduced for spectral line reduction. Additionally, an energy detection receiver for IR-UWB is presented to similarly meet these design goals whilst being adaptable to address IR-UWB transmitter specificity.
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公开(公告)号：US20200067496A1
公开(公告)日：2020-02-27
申请号：US16521657
申请日：2019-07-25
申请人： FUJITSU LIMITED
发明人： Ikuo Soga
摘要： A pulse position modulation circuit includes a delay locked loop circuit configured to include a plurality of delay circuits coupled in a cascade, each of the plurality of delay circuits being configured to delay an input signal by a time width corresponding to a control signal so as to generate an output signal, a plurality of pulse generation circuits, each of which is configured to generate a pulse with a pulse width corresponding to a phase difference between a first signal and a second signal which have different phases from each other at different timings corresponding to states of the first signal and the second signal, each of the first signal and the second signal being the input signal or the output signal of the plurality of delay circuits, and a selection circuit configured to select pulses generated by the plurality of pulse generation circuits.
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公开(公告)号：US10455494B2
公开(公告)日：2019-10-22
申请号：US16254809
申请日：2019-01-23
发明人： Frederic Nabki , Dominic Deslandes , Alexandre Desmarais , Anh-Kiet Vuong , Anis Bounif , Wang Yu Hao , William Pham
IPC分类号： G06F3/048 , H04W52/02 , H04B5/02 , H04B1/7163 , H04B1/713 , H04B1/717 , G03B21/00 , G03B21/26 , G06F1/16 , G06F3/01 , G06F3/03 , G06F3/0346 , G06F3/041 , G06F3/042 , G06F3/0482 , G06F3/0484 , G06F3/0488 , H04N9/31 , H04B5/00
摘要： Within many applications impulse radio based ultra-wideband (IR-UWB) transmission offers significant benefits for very short range high data rate communications when compared with existing standards and protocols. In many of these applications the main design goals are very low power consumption and very low complexity design for easy integration and cost reduction. Digitally programmable IR-UWB transmitters using an on-off keying modulation scheme on a 0.13 microns CMOS process operating on 1.2V supply and yielding power consumption as low as 0.9 mW at a 10 Mbps data rate with dynamic power control are enabled. The IR-UWB transmitters support new frequency hopping techniques providing more efficient spectrum usage and dynamic allocation of the spectrum when transmitting in highly congested frequency bands. Biphasic scrambling is also introduced for spectral line reduction. Additionally, an energy detection receiver for IR-UWB is presented to similarly meet these design goals while being adaptable to address IR-UWB transmitter specificity.
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公开(公告)号：US20190297507A1
公开(公告)日：2019-09-26
申请号：US16441768
申请日：2019-06-14
IPC分类号： H04W16/26 , H04B3/46 , H01Q1/46 , H04B3/32 , H04B3/52 , H04J3/10 , H04B3/56 , H04B1/7163 , H04B1/719 , H04B1/717 , H01Q21/20 , H01Q23/00 , H01Q13/02 , H01P5/08 , H01P3/16
摘要： Aspects of the subject disclosure may include, a system that facilitates receiving a first group of electromagnetic waves, wherein the first group of electromagnetic waves propagate along a first span of a transmission medium without requiring an electrical return path and without traversing a first supporting device or a second supporting device. The first span of the transmission medium is supported by the first supporting device and the second supporting device, and the first group of electromagnetic waves convey a first communication signal. The first communication signal is extracted from the first group of electromagnetic waves, and the first communication signal is transmitted to a communication device. Other embodiments are disclosed.
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公开(公告)号：US20190199398A1
公开(公告)日：2019-06-27
申请号：US16229746
申请日：2018-12-21
申请人： Apple Inc.
摘要： Embodiments enable communicating Ultra Wideband (UWB) devices to collaborate by exchanging pulse shape information. The UWB devices use the pulse shape information to improve ranging accuracy. The improved ranging accuracy can be used in complex multipath environments where advanced estimation schemes are used to extract an arriving path for time-of-flight estimation. To determine the pulse shape information to be shared, some embodiments include determining location information of a UWB device and selecting the pulse shape information that satisfies regional aspects. The pulse shape information includes a time-zero index specific to a ranging signal that is used by UWB receivers to establish timestamps time-of-flight calculations. Some embodiments include measuring performance characteristics and selecting different pulse shape information based on the performance characteristics for improved accuracy.
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公开(公告)号：US20190165828A1
公开(公告)日：2019-05-30
申请号：US16261797
申请日：2019-01-30
IPC分类号： H04B1/717 , H04B1/3827 , H04B1/16 , H04L25/03 , H04L7/00 , H04B1/7183 , H04L25/00 , H04L7/033
摘要： Ultra-Wideband (UWB) technology exploits modulated coded impulses over a wide frequency spectrum with very low power over a short distance for digital data transmission. Today's leading edge modulated sinusoidal wave wireless communication standards and systems achieve power efficiencies of 50 nJ/bit employing narrowband signaling schemes and traditional RF transceiver architectures. However, such designs severely limit the achievable energy efficiency, especially at lower data rates such as below 1 Mbps. Further, it is important that peak power consumption is supportable by common battery or energy harvesting technologies and long term power consumption neither leads to limited battery lifetimes or an inability for alternate energy sources to sustain them. Accordingly, it would be beneficial for next generation applications to exploit inventive transceiver structures and communication schemes in order to achieve the sub nJ per bit energy efficiencies required by next generation applications.
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公开(公告)号：US10171129B1
公开(公告)日：2019-01-01
申请号：US15681968
申请日：2017-08-21
申请人： Apple Inc.
摘要： Embodiments enable communicating Ultra Wideband (UWB) devices to collaborate by exchanging pulse shape information. The UWB devices use the pulse shape information to improve ranging accuracy. The improved ranging accuracy can be used in complex multipath environments where advanced estimation schemes are used to extract an arriving path for time-of-flight estimation. To determine the pulse shape information to be shared, some embodiments include determining location information of a UWB device and selecting the pulse shape information that satisfies regional aspects. The pulse shape information includes a time-zero index specific to a ranging signal that is used by UWB receivers to establish timestamps time-of-flight calculations. Some embodiments include measuring performance characteristics and selecting different pulse shape information based on the performance characteristics for improved accuracy.
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公开(公告)号：US10148473B2
公开(公告)日：2018-12-04
申请号：US15860016
申请日：2018-01-02
IPC分类号： H04B10/00 , H04L27/10 , H03M1/82 , H03M3/00 , H04B1/692 , H04L25/49 , H04L27/04 , H04B1/717 , H04B1/707 , H04B1/7163
摘要： Methods and systems are provided for spreading spectral density of digital-to-analog conversion output signals. A spreading circuit may spread a digital-to-analog converter (DAC) output signal over a particular frequency spectrum, with the spreading circuit receiving the DAC output signal; generating a plurality of internal control signals; and generating based on the DAC output signal and the one or more internal control signal a corresponding spread output signal. The Internal control signals may comprise at least a first control signal, generated based on sequences meeting at least one particular criterion, a second control signal, generated based on a feedback corresponding to an intermediate output generated within the spreading circuit. The spreading circuit may generate the first control signal based on zero-sum sequences. The spreading circuit may generate a stream of pulses based on the intermediate output, and may generate the feedback signal based on the stream of pulses.
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公开(公告)号：US20180304086A1
公开(公告)日：2018-10-25
申请号：US15707379
申请日：2017-09-18
CPC分类号： A61N1/37223 , A61B5/0031 , A61B5/6847 , A61B5/7221 , H04B1/7174 , H04B7/0608
摘要： Techniques provided herein are directed toward providing a robust downlink communication frame that enables medical implants with highly inaccurate LOs to reliably provide uplink communications to an interrogator device. The downlink communication frame can include, among other things, a plurality of uplink trigger subframes that enable timing of uplink communication of the various medical implants with which the interrogator device is communicating. These uplink trigger subframes may be modulated in a special manner as to distinguish them from other subframes.
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