公开(公告)号：WO2017172439A1

公开(公告)日：2017-10-05

申请号：PCT/US2017/023554

申请日：2017-03-22

Applicant: QUALCOMM INCORPORATED

Inventor： AKHAVAN, Koorosh ,  KANG, Eunmo ,  SENARATNE, Rajapaksa

IPC: H04L27/12 ,  H04L27/20 ,  H04B1/04 ,  H04B1/14 ,  H04B1/00 ,  H04L25/03

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.

Abstract translation: 系统和方法涉及无线信号发射机中极坐标的相位调制，以实现高发射功率电平，同时满足频谱掩模和EVM要求。 输入信号被映射到调制频率序列（例如，O-QPSK到MSK）以产生映射信号。 数字频率整形滤波器被应用于映射信号以生成整形信号。 将自适应舍入算法应用于整形信号以生成缩小的位宽信号。 数字频率合成器应用于缩小的位宽信号以生成用于传输的模拟波形。

公开(公告)号：WO2021194867A1

公开(公告)日：2021-09-30

申请号：PCT/US2021/023111

申请日：2021-03-19

Applicant: QUALCOMM INCORPORATED

Inventor： HOSSEINI, Seyed Mohammad Ehsan ,  LUONG, Le Nguyen ,  KANG, Eunmo ,  KIM, Dongsik

IPC: H04W52/02 ,  H04W28/06 ,  H04W4/80 ,  H04W48/16 ,  H04W52/0216 ,  H04W52/0229 ,  H04W52/0235 ,  H04W8/005 ,  H04W84/18

Abstract: This disclosure provides systems, devices, apparatus, and methods, including computer programs encoded on storage media, related to low power techniques for a BLE device during a scanning state. The BLE device is configured to scan for a preamble of a packet while in a first power mode and detect when a bit of the preamble is received. Upon detecting that the bit of the preamble is received, the BLE device switches from the first power mode to a second power having a higher operating power for the BLE device than the first power mode. The switch in power modes occurs while the preamble is being received or immediately after the preamble is received and before an access address of the packet is received. The BLE device, while in the second power mode, then scans for the access address of the packet.

公开(公告)号：WO2016130474A1

公开(公告)日：2016-08-18

申请号：PCT/US2016/016995

申请日：2016-02-08

Applicant: QUALCOMM INCORPORATED

Inventor： KANG, Eunmo ,  MOFIDI, Mahbod ,  DENBOER, Paul ,  DENG, Xiao ,  BANTHIA, Ashish Subhash ,  SO, Vincent ,  MEKA, Vikram

IPC: H04L7/00 ,  H04L27/00 ,  G06K7/00 ,  H04B5/00

CPC classification number: H04L7/0087 ,  H04B5/00 ,  H04L7/00 ,  H04L7/0037 ,  H04L7/10

Abstract: A method for communications is described. The method includes determining a symbol timing drift elimination amount for a received signal. The method further includes eliminating part of the symbol timing drift by adjusting a reference clock for the modem. Determining the symbol timing drift elimination amount may be based on at least one of a symbol timing drift estimate, a symbol timing error, a packet acquisition indicator, a packet validity indicator, demodulated bits or a carrier presence indicator.

Abstract translation: 描述用于通信的方法。 该方法包括确定接收信号的符号定时漂移消除量。 该方法还包括通过调整调制解调器的参考时钟来消除部分符号定时漂移。 确定符号定时漂移消除量可以基于符号定时漂移估计，符号定时误差，分组获取指示符，分组有效性指示符，解调比特或载波存在指示符中的至少一个。

公开(公告)号：WO2014150035A2

公开(公告)日：2014-09-25

申请号：PCT/US2014/021939

申请日：2014-03-07

Applicant: QUALCOMM INCORPORATED

Inventor： YANG, Eugene ,  KANG, Eunmo ,  SABOURI, Faramarz

IPC: H03D3/00

CPC classification number: H04B15/00 ,  H03D3/009 ,  H03D7/165 ,  H04B5/00 ,  H04L7/033 ,  H04L25/4902 ,  H04L27/206 ,  H04L27/2092 ,  H04L2027/0018 ,  H04L2027/0057 ,  H04L2027/0067

Abstract: A method for communication between near field communication (NFC) devices includes generating a transmission signal, an in-phase local oscillator signal, and a quadrature local oscillator signal from edges of an input clock signal. The method further includes mixing a load modulated signal with the in-phase local oscillator signal to generate an in-phase baseband signal. The method further includes mixing the load modulated signal with the quadrature local oscillator signal to generate a quadrature baseband signal. The method further includes adjusting a phase delay of at least one of the in-phase local oscillator signal or the quadrature local oscillator signal in response to a first signal strength of the in-phase baseband signal and a second signal strength of the quadrature baseband signal.

Abstract translation: 用于近场通信（NFC）设备之间的通信的方法包括从输入时钟信号的边缘生成传输信号，同相本地振荡器信号和正交本地振荡器信号。 该方法还包括将负载调制信号与同相本地振荡器信号混合以生成同相基带信号。 该方法还包括将负载调制信号与正交本地振荡器信号混合以生成正交基带信号。 该方法还包括响应于同相基带信号的第一信号强度和正交基带信号的第二信号强度来调整同相本地振荡器信号或正交本地振荡器信号中的至少一个的相位延迟

公开(公告)号：WO2015164007A1

公开(公告)日：2015-10-29

申请号：PCT/US2015/021684

申请日：2015-03-20

Applicant: QUALCOMM INCORPORATED

Inventor： SENARATNE, Rajapaksa ,  AKHAVAN, Koorosh ,  LUONG, Le Nguyen ,  KANG, Eunmo

IPC: H03G3/30

CPC classification number: H03K5/003 ,  H03G3/3078

Abstract: A method for setting an initial gain and an initial offset for an automatic gain and offset controller (AGOC) is described. The method includes determining a gain level at which a signal does not under-saturate or over-saturate an input to an analog-to-digital converter (ADC) by performing a binary search over a fixed set of gain levels while an offset is fixed. The method also includes determining an offset correction to bring an unmodulated carrier level at an output of the ADC to a target level. The method may also include updating the gain and the offset in response to changes in a signal level.

Abstract translation: 描述了一种用于设置自动增益和偏移控制器（AGOC）的初始增益和初始偏移量的方法。 该方法包括通过在固定的增益电平集合上执行二进制搜索来确定信号未饱和或过饱和模拟数字转换器（ADC）的增益电平，同时偏移量固定 。 该方法还包括确定偏移校正以使ADC的输出处的未调制载波电平达到目标电平。 该方法还可以包括响应于信号电平的变化而更新增益和偏移。

公开(公告)号：WO2015077065A1

公开(公告)日：2015-05-28

申请号：PCT/US2014/064759

申请日：2014-11-10

Applicant: QUALCOMM INCORPORATED

Inventor： KANG, Eunmo ,  LUONG, Le, Nguyen ,  TSFATY, Yossef

IPC: H04B1/16

CPC classification number: H03D3/006 ,  H03D3/00 ,  H03D3/001 ,  H03D2200/0045 ,  H03D2200/0054 ,  H04B1/1646 ,  H04L27/14 ,  H04L27/148 ,  H04L27/152

Abstract: Methods, systems, and devices are described for an adaptive demodulator that supports multiple modes. An FM signal may be received at a demodulator and parameters corresponding to the FM signal may be identified. Connections between multiple modules within the demodulator may be configured, based at least in part on the parameters, to select one of multiple demodulation modes supported by the demodulator to demodulate the FM signal. The modes may include a phase differencing mode, a phase-locked loop (PLL) mode, a frequency-compressive feedback (FCF) mode, and/or a quadrature detector mode. The parameters may include one or both of a signal strength of the FM signal and a maximum frequency deviation of the FM signal. Based on the parameters, one or more signals may be generated to configure the connections within the demodulator. A switch from one mode to another may occur when one of the parameters breaches a threshold value.

Abstract translation: 为支持多种模式的自适应解调器描述了方法，系统和设备。 可以在解调器处接收FM信号，并且可以识别与FM信号对应的参数。 至少部分地基于参数，解调器内的多个模块之间的连接可以被配置为选择由解调器支持的多个解调模式之一以解调FM信号。 这些模式可以包括相位差分模式，锁相环（PLL）模式，频率 - 压缩反馈（FCF）模式和/或正交检测器模式。 参数可以包括FM信号的信号强度和FM信号的最大频率偏差中的一个或两个。 基于这些参数，可以生成一个或多个信号来配置解调器内的连接。 当其中一个参数违反阈值时，可能会发生从一种模式切换到另一种模式的切换。

公开(公告)号：WO2014052287A1

公开(公告)日：2014-04-03

申请号：PCT/US2013/061342

申请日：2013-09-24

Applicant: QUALCOMM INCORPORATED

Inventor： KANG, Eunmo

IPC: H04L25/06 ,  H04B5/00 ,  H04L25/49 ,  H04L27/08

CPC classification number: H04B5/0025 ,  H04B1/06 ,  H04B5/0031 ,  H04B5/0062 ,  H04B10/60 ,  H04L25/06 ,  H04L25/4904 ,  H04L27/08

Abstract: A receiver apparatus is disclosed. In one aspect, the apparatus includes a receiver interface configured to receive a signal from a transmitter and output an input sequence of M-bit samples. The apparatus also includes a quantizer circuit configured to convert the input sequence of M-bit samples into an output sequence of N-bit samples, wherein M and N are positive integer numbers, and wherein M is greater than N. The apparatus further includes a decoder circuit configured to decode the output sequence of N-bit samples.

Abstract translation: 公开了一种接收装置。 一方面，该装置包括：接收器接口，被配置为从发射机接收信号并输出​​M位采样的输入序列。 该装置还包括量化器电路，其被配置为将M位采样的输入序列转换成N位采样的输出序列，其中M和N是正整数，并且其中M大于N.该装置还包括： 解码器电路，被配置为对N位采样的输出序列进行解码。