公开(公告)号：US09154348B2

公开(公告)日：2015-10-06

申请号：US14292616

申请日：2014-05-30

Applicant: QUALCOMM Incorporated

Inventor： RaviKiran Gopalan ,  Le Nguyen Luong

IPC: H04B1/69 ,  H04B1/707 ,  H04B1/713 ,  H04L27/12 ,  H04L27/20 ,  H04L25/49

CPC classification number: H04L27/12 ,  H04L25/4908 ,  H04L27/20

Abstract: A method for improving communication sensitivity by a wireless communication device is described. The method includes obtaining a string of bits. The method also includes mapping each bit in the string of bits to a pre-allocated bit pattern to create a series of concatenated pre-allocated bit patterns. The method further includes generating a modulated signal based on the series. The method additionally includes transmitting the modulated signal.

Abstract translation: 描述了一种通过无线通信设备提高通信灵敏度的方法。 该方法包括获得一串比特。 该方法还包括将比特串中的每个比特映射到预先分配的比特模式以创建一系列级联的预先分配的比特模式。 该方法还包括基于该系列生成调制信号。 该方法还包括发送调制信号。

公开(公告)号：US09130603B2

公开(公告)日：2015-09-08

申请号：US14020702

申请日：2013-09-06

Applicant: QUALCOMM Incorporated

Inventor： RaviKiran Gopalan ,  James Y. Hurt ,  Faramarz Sabouri ,  Thinh Nguyen

IPC: H04B5/00

CPC classification number: H04B5/0043 ,  H04B5/0031 ,  H04B5/0037 ,  H04B5/0075 ,  H04B5/0093

Abstract: Systems, methods, and devices for wireless communication are included herein. An aspect of the subject matter described in the disclosure provides a device configured to detect a transmission. The device includes a receiver configured to receive an inductive communication signal having a center frequency. The device further includes an analog-to-digital converter configured to sample the signal at a rate higher than twice the center frequency. The device further includes one or more processors configured to digitally downconvert the signal. The processors are further configured to compare an energy of the downconverted signal to a detection threshold. The device further includes a transmitter configured to selectively transmit a communication based on the comparison.

Abstract translation: 本文包括用于无线通信的系统，方法和设备。 在本公开中描述的主题的一个方面提供了被配置为检测传输的设备。 该设备包括接收器，其被配置为接收具有中心频率的感应通信信号。 该装置还包括配置成以高于中心频率两倍的速率对信号进行采样的模拟 - 数字转换器。 该设备还包括被配置为数字地下变频信号的一个或多个处理器。 处理器还被配置为将下变频信号的能量与检测阈值进行比较。 该设备还包括被配置为基于该比较选择性地发送通信的发射机。

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

IPC: H04B5/00 ,  H04L7/04 ,  H04L7/10

CPC classification number: H04W4/008 ,  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。

公开(公告)号：US20140254724A1

公开(公告)日：2014-09-11

申请号：US13786676

申请日：2013-03-06

Applicant: QUALCOMM INCORPORATED

Inventor： RaviKiran Gopalan

IPC: H04L7/00

CPC classification number: H04L7/10

Abstract: In a particular embodiment, a method includes receiving a first portion of a sync field of a packet at a receiver. The sync field includes the first portion and a second portion. The packet includes the sync field and a payload field. The method includes detecting a sync word associated with the packet. The sync word is detected based on the first portion of the sync field and prior to receiving the second portion of the sync field. The method initiates a demodulation stage of the receiver prior to receiving an initial bit of the payload field. Initiating the demodulation stage prior to receipt of the initial bit of the payload field enables a demodulator to perform initial demodulation activity prior to demodulation of the payload field. Demodulation continues if, after the second portion is received, the entire received sync field matches the detected sync word.

Abstract translation: 在特定实施例中，一种方法包括在接收器处接收分组的同步字段的第一部分。 同步字段包括第一部分和第二部分。 分组包括同步字段和有效载荷字段。 该方法包括检测与分组相关联的同步字。 基于同步字段的第一部分并在接收同步字段的第二部分之前检测同步字。 该方法在接收到有效负载字段的初始位之前发起接收机的解调级。 在接收到有效负载字段的初始位之前启动解调级使得解调器能够在有效载荷字段的解调之前执行初始解调活动。 如果在接收到第二部分之后，整个接收到的同步字段与检测到的同步字匹配，则解调继续。

公开(公告)号：US09781675B2

公开(公告)日：2017-10-03

申请号：US14957964

申请日：2015-12-03

Applicant: QUALCOMM Incorporated

Inventor： Mahbod Mofidi ,  RaviKiran Gopalan

IPC: H04W52/02 ,  H04W4/00 ,  H04B1/10

CPC classification number: H04W52/0245 ,  H04B1/1027 ,  H04W4/80 ,  H04W52/0229 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/162 ,  Y02D70/166 ,  Y02D70/22 ,  Y02D70/40

Abstract: Systems and methods are disclosed that may detect a likely presence of a narrow band signal in the presence of wide-band interference without powering up a wireless receiver. A wireless device may receive a wireless signal, measure a first energy level in a first frequency band associated with an expected frequency band of the narrow band wireless signal, measure a second energy level in a second frequency band that is offset from and non-overlapping with the first frequency band, and determine whether a difference between the first energy level and the second energy level exceeds a threshold. A wireless receiver of the wireless device may be powered up based at least in part on the difference between the first energy level and the second energy level exceeding the threshold.

公开(公告)号：US09379791B2

公开(公告)日：2016-06-28

申请号：US14490818

申请日：2014-09-19

Applicant: QUALCOMM Incorporated

Inventor： RaviKiran Gopalan ,  Danlu Zhang

IPC: H04B7/02 ,  H04B7/04 ,  H04B7/06 ,  H04B15/00 ,  G06F13/42 ,  H04B7/00

CPC classification number: H04B7/0413 ,  G06F13/4204 ,  G06F2213/0038 ,  H04B7/00 ,  H04B7/0626 ,  H04B15/00

Abstract: Multiple input multiple output (MIMO) communication systems and methods for chip to chip and intrachip communication are disclosed. In one aspect, MIMO techniques that have been applied to wireless communication systems are applied to interchip and intrachip communication systems. In particular, a transfer function is applied at the transmitter, and a reverse transfer function is applied at the receiver. The transfer function dynamically changes based on channel conditions to cancel or otherwise mitigate electromagnetic interference (EMI) and crosstalk conditions. In an exemplary aspect, a sum of power levels across the channels may have a maximum. To abide by such power level constraint, the transfer function may be optimized to reduce interference while remaining within the power level constraint.

Abstract translation: 公开了用于芯片到芯片和内部通信的多输入多输出（MIMO）通信系统和方法。 在一个方面，已经应用于无线通信系统的MIMO技术被应用于芯片间和内部通信系统。 特别地，在发射机处应用传递函数，并且在接收机处应用反向传递函数。 传输函数根据信道条件动态地改变，以消除或以其他方式减轻电磁干扰（EMI）和串扰条件。 在示例性方面，通道上的功率电平之和可以具有最大值。 为了遵守这种功率级约束，可以优化传递函数以减少干扰，同时保持在功率级约束内。

公开(公告)号：US09319113B2

公开(公告)日：2016-04-19

申请号：US14491027

申请日：2014-09-19

Applicant: QUALCOMM Incorporated

Inventor： RaviKiran Gopalan

IPC: H04L1/02 ,  H04L27/00 ,  H04B7/08 ,  H04B7/04

CPC classification number: H04B7/0413 ,  H04B7/08 ,  H04L25/03891 ,  H04L27/2647

Abstract: Aspects disclosed in the detailed description include simplified multiple input multiple output (MIMO) communication schemes for interchip and intrachip communications. In exemplary aspects, MIMO techniques are applied to interchip and intrachip communication systems. In particular, a programmable control function is provided at an electrical signal source and supports a default MIMO communication scheme on a MIMO channel comprising possible communication paths among a plurality of transmitting and receiving endpoints. In addition, the programmable control function can opportunistically employ a simplified MIMO communication scheme when the MIMO channel is determined to be a tri-diagonal MIMO channel. The simplified MIMO communication scheme uses an Inverse Fast Fourier Transformation (IFFT) with reduced computational complexity. By employing the simplified MIMO communication scheme, interchip or intrachip communication may be supported with reduced implementation complexity, lower power consumption, and improved robustness.

Abstract translation: 在详细描述中公开的方面包括用于芯片间和内部通信的简化的多输入多输出（MIMO）通信方案。 在示例性方面，MIMO技术被应用于芯片间和通信系统。 特别地，在电信号源处提供可编程控制功能，并支持包含多个发送和接收端点之间可能的通信路径的MIMO信道上的默认MIMO通信方案。 另外，当MIMO信道被确定为三对角MIMO信道时，可编程控制功能可以机会地采用简化的MIMO通信方案。 简化的MIMO通信方案使用具有降低的计算复杂度的逆快速傅里叶变换（IFFT）。 通过采用简化的MIMO通信方案，可以以降低的实现复杂度，更低的功耗和更好的鲁棒性来支持中间或通信。

公开(公告)号：US20160087697A1

公开(公告)日：2016-03-24

申请号：US14491027

申请日：2014-09-19

Applicant: QUALCOMM Incorporated

Inventor： RaviKiran Gopalan

IPC: H04B7/04

CPC classification number: H04B7/0413 ,  H04B7/08 ,  H04L25/03891 ,  H04L27/2647

Abstract: Aspects disclosed in the detailed description include simplified multiple input multiple output (MIMO) communication schemes for interchip and intrachip communications. In exemplary aspects, MIMO techniques are applied to interchip and intrachip communication systems. In particular, a programmable control function is provided at an electrical signal source and supports a default MIMO communication scheme on a MIMO channel comprising possible communication paths among a plurality of transmitting and receiving endpoints. In addition, the programmable control function can opportunistically employ a simplified MIMO communication scheme when the MIMO channel is determined to be a tri-diagonal MIMO channel. The simplified MIMO communication scheme uses an Inverse Fast Fourier Transformation (IFFT) with reduced computational complexity. By employing the simplified MIMO communication scheme, interchip or intrachip communication may be supported with reduced implementation complexity, lower power consumption, and improved robustness.

Abstract translation: 在详细描述中公开的方面包括用于芯片间和内部通信的简化的多输入多输出（MIMO）通信方案。 在示例性方面，MIMO技术被应用于芯片间和通信系统。 特别地，在电信号源处提供可编程控制功能，并支持包含多个发送和接收端点之间可能的通信路径的MIMO信道上的默认MIMO通信方案。 另外，当MIMO信道被确定为三对角MIMO信道时，可编程控制功能可以机会地采用简化的MIMO通信方案。 简化的MIMO通信方案使用具有降低的计算复杂度的逆快速傅里叶变换（IFFT）。 通过采用简化的MIMO通信方案，可以以降低的实现复杂度，更低的功耗和更好的鲁棒性来支持中间或通信。

公开(公告)号：US09287827B2

公开(公告)日：2016-03-15

申请号：US13786693

申请日：2013-03-06

Applicant: QUALCOMM Incorporated

Inventor： RaviKiran Gopalan ,  Koorosh Akhavan ,  Le Nguyen Luong

IPC: H04B5/00 ,  H03D3/00 ,  G06K7/10

CPC classification number: H03D3/00 ,  G06K7/10237 ,  H04B5/00 ,  H04B5/0025 ,  H04B5/0031 ,  H04B5/0056 ,  H04B5/0093

Abstract: A method includes demodulating a load modulated signal at an initiator device based at least partially on a phase adjusted comparison value corresponding to the load modulated signal.

Abstract translation: 一种方法包括至少部分地基于对应于负载调制信号的相位调整的比较值来解调起始器装置处的负载调制信号。

公开(公告)号：US20140133324A1

公开(公告)日：2014-05-15

申请号：US13786593

申请日：2013-03-06

Applicant: QUALCOMM INCORPORATED

Inventor： RaviKiran Gopalan

IPC: H04W24/02

CPC classification number: H04W24/02 ,  A61B5/14 ,  A61B5/150847 ,  G06F19/00 ,  G06F19/3418 ,  H04B1/00 ,  H04W48/14 ,  H04W56/0095

Abstract: Systems, methods, and devices for determining an acquisition threshold boundary value and applying that boundary value to identify which incoming signals are directed to a device, based on matching the device syncword with the syncword for the incoming signal. For some implementations using ANT protocol, syncwords composed of the last four bits of the preamble and first 14 bits of the network address identify each device. Incoming syncwords are correlated with the device's syncword, and the correlation compared to threshold boundary value which is based on the characteristics of the individual syncword, including syncword bit stream inter-symbol interference.

Abstract translation: 用于确定采集阈值边界值并且基于将设备同步字与输入信号的同步字匹配来应用该边界值以识别哪些输入信号被引导到设备的系统，方法和设备。 对于使用ANT协议的一些实现，由前导码的最后四位组成的同步字和网络地址的前14位标识每个设备。 进入的同步字与设备的同步字相关，并且相关性与基于单个同步字的特性的阈值边界值相比较，包括同步字比特流符号间干扰。