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公开(公告)号：US11967983B2
公开(公告)日：2024-04-23
申请号：US17934513
申请日：2022-09-22
Applicant: QUALCOMM Incorporated
Inventor： Yi Zeng , Cheng-Han Wang , Emanuele Lopelli , Chan Hong Park , Liang Zhao , Le Nguyen Luong , Koorosh Akhavan
CPC classification number: H04B1/7174 , H03F3/245 , H03F2200/09 , H03F2200/451
Abstract: Aspects described herein include devices and methods for smart ultra wideband transmissions. In one aspect, an apparatus includes pulse generation circuitry configured to output a plurality of transmission (TX) pulse samples at a selected signal sample rate, where each pulse sample of the plurality of TX pulse samples comprises a value associated with a pulse amplitude at a corresponding sample time The apparatus includes a plurality of power amplifier (PA) cells, with each PA cell of the plurality of PA cells comprising a corresponding current source and associated gates, and where the associated gates of a PA cell are selectable to configure an on state and an off state. Logic circuitry of the apparatus is configured to set the on state or the off state for each PA cell.
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公开(公告)号：US20170288932A1
公开(公告)日：2017-10-05
申请号：US15266906
申请日：2016-09-15
Applicant: QUALCOMM Incorporated
Inventor： Eunmo Kang , Koorosh Akhavan , Le Nguyen Luong
CPC classification number: H04L1/0018 , H04L27/0014 , H04L27/2082 , H04L27/2657 , H04L27/2671 , H04L27/2675 , H04L27/2698 , H04L2027/003 , H04L2027/0057 , H04L2027/0067 , H04W4/70 , Y02D70/1262 , Y02D70/142 , Y02D70/164
Abstract: Systems and methods are directed to low cost and low power carrier frequency offset (CFO) estimation in a receiver. In-phase (I) and quadrature (Q) samples of a wireless signal are received by the receiver and a first phase and a second phase are extracted from the outputs of a first autocorrelator with a first time-lag and a second autocorrelator with a second time-lag. The extracted first and second phases are combined to generate an estimated CFO of high accuracy and wide estimation range.
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公开(公告)号：US20170288923A1
公开(公告)日：2017-10-05
申请号：US15255783
申请日：2016-09-02
Applicant: QUALCOMM Incorporated
Inventor： Rajapaksa Senaratne , Eunmo Kang , Koorosh Akhavan
CPC classification number: H04L27/22 , H04B17/309 , H04L1/00 , H04L27/2082
Abstract: Methods and systems for hardware-efficient carrier sensing are disclosed. The method may include receiving a received signal during a detection window, generating a phase-discriminated waveform based on the received signal, determining a plurality of absolute values respectively based on a plurality of correlations of the phase-discriminated waveform, and generating a detection metric based on a peak value of the plurality of absolute values.
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4.发明授权公开(公告)号：US09106268B2
公开(公告)日：2015-08-11
申请号：US13736174
申请日：2013-01-08
Applicant: QUALCOMM Incorporated
Inventor： Le Nguyen Luong , RaviKiran Gopalan , Koorosh Akhavan
Abstract: Aspects disclosed herein relate to improving acquisition for NFC load modulation. In one example, a communications device is equipped to monitor at least a complex component of load modulation of a carrier signal, detect, using a NFC technology type specific peak detection scheme, a peak associated with at least the complex component, and determine a presence of a packet beginning pattern based on the detected peak. In an aspect, the packet beginning pattern may be associated with a reception of a packet from a target NFC device.
Abstract translation: 本文公开的方面涉及改进对NFC负载调制的采集。 在一个示例中，通信设备被配备为监视载波信号的负载调制的至少一个复杂分量，使用NFC技术类型特定的峰值检测方案检测与至少复杂分量相关联的峰值，并且确定存在 基于检测到的峰值的分组开始模式。 在一方面，分组开始模式可以与来自目标NFC设备的分组的接收相关联。
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公开(公告)号：US08902965B2
公开(公告)日：2014-12-02
申请号：US13800065
申请日：2013-03-13
Applicant: QUALCOMM Incorporated
Inventor： Koorosh Akhavan , Rainer Gaethke , Faramarz Sabouri
CPC classification number: H04L1/0033 , H03F3/217 , H04B5/00 , H04B5/0031 , H04L25/03828 , H04L25/03853
Abstract: The present systems and methods may shape signals to meet emission mask requirements, current consumption requirements, and overshoot/undershoot requirements relating to the interaction that, for example, occurs when a near field communications (NFC) target comes within range of an NFC initiator, and the initiator generates and transmits an NFC waveform. In some implementations, a pair of bit patterns are defined whose differential output from an amplifier is a shaped pulse width modulated waveform. Varying individual bits of the bit patterns can vary the shaped pulse waveform with predictability. The pulse width modulated waveform may be filtered using a matching network that reduces higher order harmonics, thereby reducing out-of-band emissions.
Abstract translation: 本系统和方法可以形成信号以满足发射掩模要求，电流消耗要求以及与例如当近场通信（NFC）目标在NFC发起者的范围内发生时的相互作用相关的过冲/下冲要求， 并且发起者生成并发送NFC波形。 在一些实现中，定义了一对位模式，其中来自放大器的差分输出是成形的脉冲宽度调制波形。 位模式的各个位的变化可以改变具有可预测性的形状脉冲波形。 可以使用减少更高阶谐波的匹配网络对脉宽调制波形进行滤波，从而减少带外发射。
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Patent Agency Ranking
公开(公告)号：US12081261B2
公开(公告)日：2024-09-03
申请号：US17960056
申请日：2022-10-04
Applicant: QUALCOMM Incorporated
Inventor： Pooria Pakrooh , Bin Tian , Stephen Jay Shellhammer , Le Nguyen Luong , Koorosh Akhavan
IPC: H04B1/71 , H04B1/7183
CPC classification number: H04B1/7183
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first wireless communication device may transmit, to a second wireless communication device, a time and/or frequency synchronization message using a first radio frequency (RF) technology, wherein the time and/or frequency synchronization message is used to obtain synchronization information for a second RF technology. The first wireless communication device may transmit, to the second wireless communication device, a first set of ranging measurement signals associated with the second RF technology. The first wireless communication device may receive, from the second wireless communication device, a second set of ranging measurement signals associated with the second RF technology. Numerous other aspects are described.
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公开(公告)号：US20190273573A1
公开(公告)日：2019-09-05
申请号：US16271316
申请日：2019-02-08
Applicant: QUALCOMM Incorporated
Inventor： Seyed Mohammad Ehsan Hosseini , Koorosh Akhavan
IPC: H04L1/00
Abstract: A device (e.g., a wireless device) may obtain a set of encoded bits, and select a set of symbol locations for puncturing. The device may then obtain and transmit modulated symbols based on the puncturing. For example, the device may encode information bits according to a convolutional code rate. In some cases, the encoded bits may be punctured (e.g., via a puncturing matrix with each column including either all 1's or all 0's) and the set of punctured bits may be mapped to symbols. In other cases, the encoded bits may be mapped to symbols, and the symbols may be punctured (e.g., via a puncturing matrix). The puncturing matrix may be identified based on a desired punctured code rate, the convolutional code rate used to encode the information bits, and whether or not the puncturing is to be applied before or after symbol mapping.
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8.发明申请公开(公告)号：US20170288921A1
公开(公告)日：2017-10-05
申请号：US15255659
申请日：2016-09-02
Applicant: QUALCOMM Incorporated
Inventor： Koorosh Akhavan , Eunmo Kang , Rajapaksa Senaratne
CPC classification number: H04L27/20 , H04B1/0017 , H04B1/0475 , H04B2001/0491 , H04L25/03828 , H04L25/03834 , H04L25/03853 , H04L25/03859 , H04L27/122
Abstract: Systems and methods are directed to phase modulation of polar coordinates in a transmitter of wireless signals, to achieve high transmit power levels while meeting spectral mask and EVM requirements. An input signal is mapped to a sequence of modulation frequency (e.g., O-QPSK to MSK) to generate a mapped signal. A digital frequency shaping filter is applied to the mapped signal to generate a shaped signal. An adaptive rounding algorithm is applied to the shaped signal to generate a reduced bit-width signal. A digital frequency synthesizer is applied to the reduced bit-width signal to generate an analog waveform for transmission.
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9.发明申请公开(公告)号：US20150312707A1
公开(公告)日：2015-10-29
申请号：US14795782
申请日：2015-07-09
Applicant: QUALCOMM Incorporated
Inventor： Le Nguyen Luong , RaviKiran Gopalan , Koorosh Akhavan
CPC classification number: H04B5/00 , H04B5/0031 , H04L7/042 , H04L7/10 , H04W4/80
Abstract: Aspects disclosed herein relate to improving acquisition for NFC load modulation. In one example, a communications device is equipped to monitor at least a complex component of load modulation of a carrier signal, detect, using a NFC technology type specific peak detection scheme, a peak associated with at least the complex component, and determine a presence of a packet beginning pattern based on the detected peak. In an aspect, the packet beginning pattern may be associated with a reception of a packet from a target NFC device.
Abstract translation: 本文公开的方面涉及改进对NFC负载调制的采集。 在一个示例中，通信设备被配备为监视载波信号的负载调制的至少一个复杂分量，使用NFC技术类型特定的峰值检测方案检测与至少复杂分量相关联的峰值，并且确定存在 基于检测到的峰值的分组开始模式。 在一方面，分组开始模式可以与来自目标NFC设备的分组的接收相关联。
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10.发明授权Systems and methods for detecting data collisions for a near field communication system 有权用于检测近场通信系统的数据冲突的系统和方法公开(公告)号：US08942278B2
公开(公告)日：2015-01-27
申请号：US13791737
申请日：2013-03-08
Applicant: QUALCOMM Incorporated
Inventor： Koorosh Akhavan , RaviKiran Gopalan , Eunmo Kang , Le Nguyen Luong
CPC classification number: H04B5/00
Abstract: In a wireless near field communication (NFC) system, a target, such as a smart card, can communicate with an initiator, such as a card reader, by load modulating a radio frequency (RF) signal generated by the initiator. When two or more targets load modulate the RF signal generated, “collisions” can occur with the load modulation. Apparatus and methods detect the presence or absence of collisions in a lower layer or physical layer and report the presence of detected collisions to an upper layer for further handling.
Abstract translation: 在无线近场通信（NFC）系统中，诸如智能卡的目标可以通过负载调制由发起者产生的射频（RF）信号与诸如读卡器的发起者进行通信。 当两个或多个目标负载调制产生的RF信号时，负载调制可能会发生“碰撞”。 装置和方法检测下层或物理层中是否存在碰撞，并将检测到的碰撞的存在报告给上层进行进一步处理。
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