公开(公告)号：US06977915B2

公开(公告)日：2005-12-20

申请号：US09772622

申请日：2001-01-30

Applicant: Xixian Chen ,  Neil N. McGowan ,  Weigang Li ,  Jeffrey D. Stanier ,  M. Khaled Islam ,  Qiang Shen ,  Xin Jin

Inventor： Xixian Chen ,  Neil N. McGowan ,  Weigang Li ,  Jeffrey D. Stanier ,  M. Khaled Islam ,  Qiang Shen ,  Xin Jin

IPC: H04B1/7097 ,  H04B7/005 ,  H04B7/216

CPC classification number: H04W52/08 ,  H04B1/7097 ,  H04W52/24

Abstract: A method and system for closed loop power control in a wireless communication network. A received signal is despread. The signal power of the despread received signal is estimated. The noise power of the despread received signal is estimated. Estimating the noise power includes multiplying the despread received signal with an orthogonal noise code to cancel the received signal, accumulating the multiplied despread received signal over one frame and determining a signal-to-noise ratio of the received signal at least in part by dividing the estimated signal power by the estimated noise power. A reverse power control bit is determined based on the determined signal-to-noise ratio.

Abstract translation: 一种用于无线通信网络中闭环功率控制的方法和系统。 接收到的信号被解扩。 估计解扩接收信号的信号功率。 估计解扩接收信号的噪声功率。 估计噪声功率包括将去扩展接收信号与正交噪声码相乘以抵消接收信号，在一帧上累积相乘的解扩接收信号，并至少部分地通过将接收信号的信噪比除以 估计信号功率由估计的噪声功率。 基于确定的信噪比来确定反向功率控制位。

公开(公告)号：US20050190855A1

公开(公告)日：2005-09-01

申请号：US10787097

申请日：2004-02-27

Applicant: Xin Jin ,  Qingzhong Jiao ,  Wen Chan

Inventor： Xin Jin ,  Qingzhong Jiao ,  Wen Chan

IPC: H04B7/005 ,  H04K1/02

CPC classification number: H04W52/225 ,  H04W52/08 ,  H04W52/10 ,  H04W52/52

Abstract: The power efficiency of a transmitter is optimized through control of a selected aspect of the transmitter, for instance, a parameter of a power amplifier within the transmitter. The control of the aspect is based on a generated indication of desired average transmitted power. Based on this indication, a hardware path produces a first adjustment signal and a software path produces a second adjustment value, where the second adjustment value has been previously determined to correspond to the particular indication of desired average transmitted power through calibration. A difference between a first adjustment value, which is based on the first adjustment signal, and the second adjustment value is used to produce a correction signal, which is used to alter the first adjustment signal and produce a signal to control the selected aspect of the transmitter.

Abstract translation: 通过控制发射机的选定方面，例如发射机内的功率放大器的参数来优化发射机的功率效率。 该方面的控制基于所期望的平均发射功率的生成指示。 基于该指示，硬件路径产生第一调整信号，并且软件路径产生第二调整值，其中第二调整值已经被预先确定为对应于通过校准的期望的平均发送功率的特定指示。 使用基于第一调整信号的第一调整值与第二调整值之间的差异来产生校正信号，其用于改变第一调整信号并产生信号以控制所选择的方面 发射机。

公开(公告)号：US20050128997A1

公开(公告)日：2005-06-16

申请号：US10992339

申请日：2004-11-19

Applicant: Wen Zhao ,  Xin Jin

Inventor： Wen Zhao ,  Xin Jin

IPC: H04J3/24 ,  H04L9/00 ,  H04L9/32 ,  H04L12/56 ,  H04L12/66 ,  H04W4/08 ,  H04W4/10 ,  H04W4/12 ,  H04W40/02 ,  H04W80/10 ,  H04W92/02

CPC classification number: H04W4/08 ,  H04L29/12122 ,  H04L29/12292 ,  H04L51/04 ,  H04L51/38 ,  H04L61/1547 ,  H04L61/2069 ,  H04L65/4061 ,  H04L67/24 ,  H04W4/10 ,  H04W4/12 ,  H04W8/186 ,  H04W40/02 ,  H04W76/45 ,  H04W80/10 ,  H04W92/02

Abstract: In instant communications over a wireless network, a user from a private organization sends the request for instant communications communication through a private server controlled by the private organization. The private server sets up a private account with the wireless carrier and the user communicates via the private account.

Abstract translation: 在通过无线网络的即时通信中，来自私人组织的用户通过由私人组织控制的专用服务器发送即时通信通信请求。 私人服务器设置与无线运营商的私人帐户，用户通过私人帐户进行通信。

公开(公告)号：US06658045B1

公开(公告)日：2003-12-02

申请号：US09253094

申请日：1999-02-22

Applicant: Xin Jin

Inventor： Xin Jin

IPC: H04B169

CPC classification number: H04B7/01 ,  H04B1/7115 ,  H04B1/7117 ,  H04B1/712 ,  H04B2201/70707 ,  H04B2201/7071

Abstract: The invention is a CDMA system which achieves improved performance by virtue of being adaptive to the speed of each mobile unit in the system. A speed estimator for each mobile unit can be located in the mobile unit itself and/or in the base station. The speed estimate is used to modify a variety of parameters within processing fingers in the mobile unit and in the base station, including the accumulation period of certain accumulators and the time constant for loop filters. The speed estimate also influences assignment, by a control unit, of path delays to respective processing fingers for despreading. Furthermore, the speed estimate is used by the control unit to decide whether or not finger outputs are to be combined by a diversity combiner in the receiver. In addition, the speed estimate is used to optimize the closed-loop power control target and the energy of a transmitted pilot. The speed estimate is also used for allocation of pooled finger and searcher resources, as well as data transmission rate negotiation and interleaver/deinterleaver length configuration.

Abstract translation: 本发明是通过适应于系统中的每个移动单元的速度来实现改进的性能的CDMA系统。 每个移动单元的速度估计器可以位于移动单元本身和/或基站中。 速度估计用于修改移动单元和基站中的处理指状物内的各种参数，包括某些累加器的累积周期和环路滤波器的时间常数。 速度估计也影响由控制单元对各个处理手指进行解扩的路径延迟的分配。 此外，控制单元使用速度估计来确定手指输出是否由接收机中的分集组合器组合。 此外，速度估计用于优化闭环功率控制目标和发射导频的能量。 速度估计也用于合并手指和搜索资源的分配，以及数据传输速率协商和交织器/解交织器长度配置。

公开(公告)号：US06598189B1

公开(公告)日：2003-07-22

申请号：US09560648

申请日：2000-04-28

Applicant: Wen Zhao ,  Robert Charles Elliott ,  Xin Jin

Inventor： Wen Zhao ,  Robert Charles Elliott ,  Xin Jin

IPC: G06F1100

CPC classification number: H04L1/0061 ,  H04L25/0262

Abstract: A method of determining the actual transmission rate in a variable transmission rate communication system is provided, using error detection metrics. The received symbols are decoded assuming each possible rate, and then re-encoded to determine a symbol error rate for each possible rate. The possible transmission rates are then narrowed down using a simple measure of the likelihood of error, such as the CRC status determined for each rate. The symbol error rates are compared to either make a confident decision as to the actual transmission rate or to erase the frame. Rather than compare the values of the symbol error rates with predetermined thresholds, the method compares the differences between the symbol error rates for each possible rate with predetermined thresholds. This results in fewer erasures, even if the symbol error rates are low due to high signal to noise ratios.

Abstract translation: 提供了使用错误检测度量来确定可变传输速率通信系统中的实际传输速率的方法。 假设每个可能的速率对接收到的符号进行解码，然后重新编码以确定每个可能速率的符号错误率。 然后可能的传输速率通过使用错误可能性的简单测量来缩小，例如为每个速率确定的CRC状态。 将符号错误率进行比较，以确定实际传输速率或擦除帧。 不是将符号错误率的值与预定阈值进行比较，而是将每个可能速率的符号错误率与预定阈值之间的差异进行比较。 这导致更少的擦除，即使符号错误率由于高的信噪比而较低。

公开(公告)号：US06236864B1

公开(公告)日：2001-05-22

申请号：US09200759

申请日：1998-11-27

Applicant: Neil McGowan ,  Xin Jin

Inventor： Neil McGowan ,  Xin Jin

IPC: H04B102

CPC classification number: H04B1/707 ,  H04B2201/70706

Abstract: A peak power regulator is disclosed that functions within a Code Division Multiple Access (CDMA) transmitter to reduce peak power spikes within baseband signals while maintaining the average output power consistent with the average input power, controlling the out-of-band emissions, and maintaining the in-band signal quality within an acceptable degradation. In-phase and quadrature baseband signals are input to a delay block and an envelope magnitude predictor within the peak power regulator. The envelope magnitude predictor outputs an estimate for the magnitude of the envelope that will be generated when the inputted baseband signals are modulated. This estimate is input to a multiplier that generates a ratio by dividing the estimate by a maximum acceptable envelope magnitude. The ratio is subsequently input to a mapping table that outputs a scaling factor sufficient for reducing peak power spikes. The scaling factor is subsequently input to an optional mean power regulator that generates an instantaneous gain value sufficient to maintain the average output power level at the average input power level. This gain value is applied to two multipliers that are also input with delayed versions of the in-phase and quadrature baseband input signals. The outputs from these two multipliers, after being filtered within lowpass filters to remove out-of-band emissions caused by the scaling, are output from the peak power regulator. These peak power reduced outputs have any peak power spikes scale reduced while maintaining the average power constant.

Abstract translation: 公开了一种峰值功率调节器，其功能在码分多址（CDMA）发射机内，以降低基带信号内的峰值功率尖峰，同时保持与平均输入功率一致的平均输出功率，控制带外发射，并维持 带内信号质量可以降低。 同相和正交基带信号被输入到峰值功率调节器内的延迟块和包络幅度预测器。 包络幅度预测器输出当输入的基带信号被调制时将产生的包络幅度的估计。 该估计被输入到通过将估计除以最大可接受的包络幅度而产生比率的乘法器。 该比率随后被输入到映射表，其输出足以减少峰值功率尖峰的比例因子。 缩放因子随后被输入到可选的平均功率调节器，其产生足以将平均输出功率电平维持在平均输入功率电平的瞬时增益值。 该增益值被应用于同时和正交基带输入信号的延迟版本的两个乘法器。 从峰值功率调节器输出来自这两个乘法器的输出，在经过低通滤波器滤波以消除由缩放引起的带外发射之后。 这些峰值功率降低的输出在保持平均功率恒定的情况下具有任何峰值功率尖峰尺度减小。

公开(公告)号：US11493623B2

公开(公告)日：2022-11-08

申请号：US16835278

申请日：2020-03-30

Applicant: Xin Jin

Inventor： Xin Jin

IPC: G01S11/10 ,  G01S13/87 ,  G01S15/87 ,  G01S19/42 ,  G01S11/14 ,  G01S1/74 ,  G01S1/04

Abstract: In many applications such as automobiles on busy highways, if a lot of vehicles on road are equipped with Doppler radars to help improve driving safety, no matter human-driven or auto-driven, if the radars use same frequency band, avoiding interference between them is a hard task. Assigning distinct frequencies is one of the solutions, however not only it wastes expensive spectrum resource, but also the task itself to dynamically assign frequency to vehicles randomly come together becomes a hard one to do. The disclosed invention of Doppler group radar will allow radar devices to work together using shared frequency band without interfering one another, without sacrificing performance, and without much increase in costs.

公开(公告)号：US20210302579A1

公开(公告)日：2021-09-30

申请号：US16917805

申请日：2020-06-30

Applicant: Xin Jin

Inventor： Xin Jin

IPC: G01S17/86 ,  G01S7/481

Abstract: In many applications such as automobiles on busy highways, if a lot of vehicles on road are equipped with Doppler LIDARs to help improve driving safety, no matter human-driven or autonomous-driven, when multiple LIDARs are simultaneously illuminating an object, the LIDARs signals will interfere with each other. Avoiding interference between them is a hard task. The disclosed invention of “Doppler group LIDAR” will allow LIDAR devices of this kind to inherently work together in “physical layer” without interfering one another, without sacrificing performance, and without having to rely on higher layer protocols to achieve these goals, so that all LIDARs of this kind interoperate easily and reliably.

公开(公告)号：US10657726B1

公开(公告)日：2020-05-19

申请号：US16137416

申请日：2018-09-20

Applicant: Xin Jin ,  Xiaoyu Lu

Inventor： Xin Jin ,  Xiaoyu Lu

IPC: G06T19/00 ,  G16H40/63 ,  A61B34/20 ,  A61B34/10 ,  G06F3/01 ,  G16H40/20

Abstract: A mixed reality system and method for determining spatial positions of dental instruments without having a fixed intra oral reference point is disclosed. An intra-oral image sensor-based positioning device including at least two cameras is provided to sense and track the movements of dental instruments being used. The three-dimensional coordinates relating to the movement and orientation of the dental instruments are obtained for real time or delayed use in a mixed reality environment.

公开(公告)号：US20170181485A1

公开(公告)日：2017-06-29

申请号：US14980001

申请日：2015-12-28

Applicant: Xin Jin

Inventor： Xin Jin

IPC: A41D13/018 ,  A41F9/00 ,  G05B15/02 ,  A41D1/00

CPC classification number: A41D13/018 ,  A41D1/002 ,  A41F9/002 ,  A61B5/1117

Abstract: For people with reduced physical ability such as elderly people, risks of bodily injuries are high. Once an injury occurs, a victim suffers, sometimes a victim even may not survive. To help such people, a personal wearable device without adding much inconvenience in normal life is disclosed. This personal wearable device is able to detect dangerous conditions and automatically deploy airbags when needed to prevent or mitigate potential bodily injuries.