公开(公告)号：US20080055009A1

公开(公告)日：2008-03-06

申请号：US11844439

申请日：2007-08-24

申请人： Gregory Lerner ,  Nir Tal

发明人： Gregory Lerner ,  Nir Tal

IPC分类号： H03B21/01 ,  H03B21/00

CPC分类号： H03B21/00

摘要： A novel and useful apparatus for and method of local oscillator (LO) generation with non-integer multiplication ratio between the local oscillator and RF frequencies. The LO generation schemes presented are operative to generate I and Q square waves at a designated frequency while avoiding the well known issue of harmonic pulling. The signal is input to a synthesizer timed to a rational multiplier of the RF frequency fRF. The signal is then divided to generate a plurality of phases of the divided signal. A plurality of combination signals are generated which are then multiplied by a set of weights and summed to cancel out some undersired products. The result is filtered to generate the LO output signal.

摘要翻译： 本地振荡器（LO）生成的新颖有用的装置和方法，其本地振荡器和RF频率之间具有非整数倍乘比。 所呈现的LO产生方案可用于以指定频率产生I和Q方波，同时避免众所周知的谐波拉动问题。 该信号被输入到合成器，其被定时到RF频率f RF RF的有理乘数。 然后将信号分割以产生分割信号的多个相位。 生成多个组合信号，然后乘以一组权重并相加以抵消一些较低产品。 滤波后产生LO输出信号。

公开(公告)号：US07805122B2

公开(公告)日：2010-09-28

申请号：US11844439

申请日：2007-08-24

申请人： Gregory Lerner ,  Nir Tal

发明人： Gregory Lerner ,  Nir Tal

IPC分类号： H04B7/00

CPC分类号： H03B21/00

摘要： A novel and useful apparatus for and method of local oscillator (LO) generation with non-integer multiplication ratio between the local oscillator and RF frequencies. The LO generation schemes presented are operative to generate I and Q square waves at a designated frequency while avoiding the well known issue of harmonic pulling. The signal is input to a synthesizer timed to a rational multiplier of the RF frequency fRF. The signal is then divided to generate a plurality of phases of the divided signal. A plurality of combination signals are generated which are then multiplied by a set of weights and summed to cancel out some undersired products. The result is filtered to generate the LO output signal.

摘要翻译： 本地振荡器（LO）生成的新颖有用的装置和方法，其本地振荡器和RF频率之间具有非整数倍乘比。 所呈现的LO产生方案可用于以指定频率产生I和Q方波，同时避免众所周知的谐波拉动问题。 该信号被输入到合成器，其被定时到RF频率fRF的有理乘数。 然后将信号分割以产生分割信号的多个相位。 生成多个组合信号，然后乘以一组权重并相加以抵消一些较低产品。 滤波后产生LO输出信号。

公开(公告)号：US07756487B2

公开(公告)日：2010-07-13

申请号：US11844453

申请日：2007-08-24

申请人： Gregory Lerner ,  Nir Tal ,  Robert B. Staszewski

发明人： Gregory Lerner ,  Nir Tal ,  Robert B. Staszewski

IPC分类号： H04B1/40

CPC分类号： H03B21/02 ,  H03K5/00006 ,  H03K5/13 ,  H03K5/1565

摘要： A novel and useful apparatus for and method of local oscillator (LO) generation with non-integer multiplication ratio between the local oscillator and RF frequencies. The LO generation schemes presented are operative to generate I and Q square waves at a designated frequency while avoiding the well known issue of harmonic pulling. The input signal is fed to a synthesizer timed to a rational multiplier of the RF frequency L/N fRF. The clock signal generated is divided by a factor Q to form 2Q phases of the clock at a frequency of L(N*Q)fRF, wherein each phase undergoes division by L. The phase signals are input to a pulse generator which outputs a plurality of pulses. The pulses are input to a selector which selects which signal to output at any point in time. By controlling the selector, the output clock is generated as a TDM based signal. Any spurs are removed by an optional filter.

摘要翻译： 本地振荡器（LO）生成的新颖有用的装置和方法，其本地振荡器和RF频率之间具有非整数倍乘比。 所呈现的LO产生方案可用于以指定频率产生I和Q方波，同时避免众所周知的谐波拉动问题。 输入信号被馈送到合成器，其被定时到RF频率L / N fRF的有理乘数。 所生成的时钟信号除以因子Q，以L（N * Q）fRF的频率形成时钟的2Q相位，其中每相经过除法L.相位信号被输入到输出多个 的脉冲。 脉冲被输入到选择器，其选择在任何时间点输出哪个信号。 通过控制选择器，输出时钟作为基于TDM的信号产生。 任何杂项都可以通过可选过滤器去除。

公开(公告)号：US20070248195A1

公开(公告)日：2007-10-25

申请号：US11739094

申请日：2007-04-23

申请人： Gregory Lerner ,  Nir Tal ,  Dan Wolberg ,  Manoneet Singh ,  Yehuda Azenkot

发明人： Gregory Lerner ,  Nir Tal ,  Dan Wolberg ,  Manoneet Singh ,  Yehuda Azenkot

IPC分类号： H04L27/06

CPC分类号： H04L27/2656 ,  H04L7/042 ,  H04L7/08 ,  H04L27/2657 ,  H04L27/2679 ,  H04L2027/0046 ,  H04L2027/0065

摘要： A novel and useful apparatus for and method of packet detection and carrier frequency offset estimation. The packet detection mechanism is robust to channels and sustains reasonable miss-detect (and false alarm) rates at low SNR values. The mechanism uses a modified combined cross correlation and delay and correlate scheme. A delay and correlate scheme is used in order to handle the effects of multipath while swapping integration and multiplication to increase cross-correlation factors resulting in improved sensitivity in low SNR conditions. Correlation is divided into multiple chains to generate a plurality of partial correlations to observe short patterns in the spread sequence resulting in improved performance in long multipath channels.

摘要翻译： 一种新颖有用的分组检测和载波频率偏移估计方法及方法。 分组检测机制对信道是鲁棒的，并且在低SNR值下维持合理的错误检测（和误报）速率。 该机制采用改进的组合互相关和延迟和相关方案。 使用延迟和相关方案来处理多路径的影响，同时交换积分和乘法以增加互相关因子，从而在低SNR条件下提高灵敏度。 相关性被分成多个链以产生多个部分相关性以观察扩展序列中的短模式，导致在长多径信道中的改进的性能。

公开(公告)号：US07787563B2

公开(公告)日：2010-08-31

申请号：US11297524

申请日：2005-12-07

申请人： Nir Tal ,  Sameh S. Rezeq ,  Robert B. Staszewski ,  Oren E. Eliezer ,  Ofer Friedman

发明人： Nir Tal ,  Sameh S. Rezeq ,  Robert B. Staszewski ,  Oren E. Eliezer ,  Ofer Friedman

IPC分类号： H04L25/49

CPC分类号： H03M7/3017 ,  H03M7/3022 ,  H03M7/3042

摘要： A transmitter employing a sigma delta modulator having a noise transfer function adapted to shift quantization noise outside at least one frequency band of interest. A technique is presented to synthesize the controllers within a single-loop sigma delta modulator such that the noise transfer function can be chosen arbitrarily from a family of functions satisfying certain conditions. Using the novel modulator design technique, polar and Cartesian (i.e. quadrature) transmitter structures are supported. A transmitter employing polar transmit modulation is presented that shapes the spectral emissions of the digitally-controlled power amplifier such that they are significantly and sufficiently attenuated in one or more desired frequency bands. Similarly, a transmitter employing Cartesian transmit modulation is presented that shapes the spectral emissions of a hybrid power amplifier such that they are significantly and sufficiently attenuated in one or more desired frequency bands.

摘要翻译： 一种采用具有噪声传递函数的Σ-Δ调制器的发射机，其适于在至少一个感兴趣的频带之外移位量化噪声。 提出了一种用于合成单环Σ-Δ调制器中的控制器的技术，使得噪声传递函数可以从满足某些条件的函数族中任意选择。 使用新颖的调制器设计技术，支持极坐标和笛卡尔（即正交）发射机结构。 呈现采用极性发射调制的发射机，其对数字控制的功率放大器的频谱发射进行整形，使得它们在一个或多个期望的频带中显着且充分衰减。 类似地，呈现采用笛卡尔发射调制的发射机，其对混合功率放大器的频谱发射进行整形，使得它们在一个或多个期望的频带中显着且充分衰减。

公开(公告)号：US07636406B2

公开(公告)日：2009-12-22

申请号：US10838974

申请日：2004-05-05

申请人： Amir Leshem ,  Nir Tal

发明人： Amir Leshem ,  Nir Tal

IPC分类号： H04B7/10

CPC分类号： H04L1/0618

摘要： A Multiple Input Multiple Output (MIMO) transmitter/receiver system has a reduced complexity decoder for receiving and decoding simultaneously several transmitted signals. The transmitter includes a space time coded modulation (STCM) block in the decoder. The transmitter/receiver system provides a reduced complexity approximation of optimal Maximum Likelihood Estimation (MLE) methods while maintaining most of the performance gain and simplifying the implementation.

摘要翻译： 多输入多输出（MIMO）发射机/接收机系统具有降低的复杂度的解码器，用于同时接收和解码若干发射信号。 发射机在解码器中包括时空编码调制（STCM）块。 发射机/接收机系统提供了最佳最大似然估计（MLE）方法的降低的复杂度近似，同时保持了大部分的性能增益并简化了实现。

公开(公告)号：US20060256910A1

公开(公告)日：2006-11-16

申请号：US11382570

申请日：2006-05-10

申请人： Nir Tal ,  Robert Staszewski ,  Ofer Friedman

发明人： Nir Tal ,  Robert Staszewski ,  Ofer Friedman

IPC分类号： H04B1/00 ,  H03D3/24 ,  H04B1/713

CPC分类号： H04B1/7136 ,  H03C3/40 ,  H03D3/007 ,  H03L7/08 ,  H03L7/0991 ,  H04B1/71635 ,  H04B1/71637 ,  H04B2001/71365

摘要： A novel and useful fast hopping frequency synthesizer and transmitter associated therewith. The frequency synthesizer and transmitter incorporates a digitally controlled oscillator (DCO) adapted to operate open loop. Instantaneous frequency switching is achieved by changing an oscillator tuning word (OTW) to imitate the three oscillators of a UWB transmitter. In one embodiment, the DCO can change the frequency instantaneously within the 1/fT of the varactor devices used to construct the DCO. An all digital phase lock loop (ADPLL) is used for offline calibration prior to the start of packet transmission or reception. Any phase shift during the switching is tracked by a digital circuit in the transmitter. In a second embodiment, additional frequency accuracy is provided by use of a numerically controlled oscillator (NCO) that functions to generate a fine resolution complex exponential waveform which effectively shifts the synthesized frequency. A mixer applies the waveform to the I and Q data samples prior to conversion to the digital domain.

摘要翻译： 一种新颖有用的快速频率合成器和发射机。 频率合成器和发射器包含适用于操作开环的数字控制振荡器（DCO）。 通过改变振荡器调谐字（OTW）来模拟UWB发射机的三个振荡器来实现瞬时频率切换。 在一个实施例中，DCO可以在用于构造DCO的变容二极管装置的1 / f T T中瞬时改变频率。 在数据包发送或接收开始之前，全数字锁相环（ADPLL）用于离线校准。 开关期间的任何相移都由发射机中的数字电路跟踪。 在第二实施例中，通过使用有效地产生有效地移动合成频率的精细分辨率复指数波形的数控振荡器（NCO）来提供额外的频率精度。 混频器在转换为数字域之前将波形应用于I和Q数据采样。

公开(公告)号：US06400782B2

公开(公告)日：2002-06-04

申请号：US09758536

申请日：2001-01-10

申请人： Nir Tal ,  Nir Shapira ,  Ron Cohen

发明人： Nir Tal ,  Nir Shapira ,  Ron Cohen

IPC分类号： H04B110

CPC分类号： G06F17/10

摘要： The present invention discloses a novel scheme of performing frequency domain filtering that does not require a Hilbert transform and which is faster than equivalent FIR filtering schemes. Such a scheme has applications in implementing filters in voice band modems on OSP platforms and in numerous other applications as well. The scheme of the present invention is shown to be superior in term of CPU resource consumption and memory storage space when compared with an equivalent implementation using prior art time domain convolution techniques. The scheme of the present invention permits the delay buffer in the far end echo canceler to store the signal in real format rather than complex format, thus reducing memory requirements by half. The present invention implements a real to analytic fast convolution in the frequency domain which uses zero CPU resources.

摘要翻译： 本发明公开了一种执行不需要希尔伯特变换并且比等效的FIR滤波方案更快的频域滤波的新颖方案。 这种方案在OSP平台和许多其他应用中也可以应用于语音频带调制解调器中的滤波器。 与使用现有技术的时域卷积技术的等效实现相比，本发明的方案在CPU资源消耗和存储器存储空间方面被证明是优越的。 本发明的方案允许远端回波消除器中的延迟缓冲器以实际格式而不是复杂格式存储信号，从而将存储器需求减少一半。 本发明实现了使用零CPU资源的频域中的真实分析快速卷积。

公开(公告)号：US5892980A

公开(公告)日：1999-04-06

申请号：US808071

申请日：1997-02-28

申请人： Nir Tal ,  Ron Cohen ,  Zeev Collin

发明人： Nir Tal ,  Ron Cohen ,  Zeev Collin

IPC分类号： G06F13/00 ,  H04L5/14 ,  H04L13/08 ,  G06F13/14 ,  G06F13/20

CPC分类号： H04L5/14

摘要： An apparatus for and method of implementing a novel buffer based fall duplex communication system is disclosed. The disclosed invention is particularly useful in native signal processing systems wherein heavy contention of processor resources typically exist, such as in systems running multi-tasking operating systems. The communication system of the present invention includes a receiver, transmitter, CODEC and telephone hybrid. The major components of the system operate on a buffer of input samples consisting of a set of input bits. The communication system operates to generate a buffer of output samples consisting of a set of output bits. The invention utilizes a novel dynamic buffer size mechanism to optimize the tradeoff between buffer delay and processing time period, on one hand, and robustness to interrupt latency and processor availability on the other hand. Small buffers provide the communication system with short, accurate response times in addition to short processing times. Using a large buffer of spare or dummy samples to be transmitted while the CPU is unavailable reduces the probability of a buffer underrun, thus giving the operating system greater leeway in deciding the exact time the signal processing functions in the modem routine are run. In this manner latency time is held to a minimum and data is not lost or corrupted. The concept of using dummy bits or silence for the generation of spare samples enables the elimination of additional latency caused by the spare samples by overriding them if they are not transmitted. This is achieved without a loss of signal coherency.

摘要翻译： 公开了一种实现基于新型缓冲器的秋季双工通信系统的方法和方法。 所公开的发明特别适用于其中通常存在大量竞争的处理器资源的本机信号处理系统，例如在运行多任务操作系统的系统中。 本发明的通信系统包括接收机，发射机，CODEC和电话混合。 系统的主要组件在由一组输入位组成的输入采样的缓冲器上操作。 通信系统用于产生由一组输出位组成的输出采样的缓冲器。 本发明一方面利用了一种新颖的动态缓冲大小机制来优化缓冲延迟与处理时间之间的权衡，另一方面优化了中断延迟和处理器可用性的鲁棒性。 小型缓冲器为通信系统提供了短时间，准确的响应时间以及短的处理时间。 在CPU不可用的情况下使用大量的备用或虚拟样本缓冲区可以减少缓冲区欠载的可能性，从而使操作系统在决定调制解调器例程中的信号处理功能运行的确切时间方面有更大的余地。 以这种方式将延迟时间保持在最低限度，数据不会丢失或损坏。 使用虚拟位或静音来生成备用样本的概念使得能够通过在备用样本未被传输时重写备用样本来消除额外的等待时间。 这是在不损失信号一致性的情况下实现的。

公开(公告)号：US20150362318A1

公开(公告)日：2015-12-17

申请号：US14486362

申请日：2014-09-15

申请人： Nir Tal ,  Dan Wolberg ,  Daryl Wade Barry

发明人： Nir Tal ,  Dan Wolberg ,  Daryl Wade Barry

IPC分类号： G01C19/72

CPC分类号： G01C19/722 ,  G01C19/64 ,  G01C19/727 ,  G01P3/44

摘要： A radio frequency based electronic gyroscope function that may be incorporated in its entirety on a monolithic integrated circuit (IC). The detection and measurement of movement in a particular plane is based on the Sagnac effect as it applies to a radio frequency signal that propagates in two different directions in a loop that may be subject to rotational perturbation. In one embodiment, three mutually perpendicular loops that are incorporated into the same integrated circuit and are used to detect and measure movement in three planes (roll, pitch and yaw) thereby allowing a signal processing unit to quantify a general three dimensional movement. The gyroscope can be incorporated into an IC that is used in portable device, such as a mobile handset, to provide it with inertial navigation and movement detection and measurement capabilities.

摘要翻译： 一种基于射频的电子陀螺仪功能，其可以整体并入到单片集成电路（IC）中。 在特定平面中的移动的检测和测量基于Sagnac效应，因为它适用于在可能受到旋转扰动的环路中在两个不同方向上传播的射频信号。 在一个实施例中，三个相互垂直的环结合到相同的集成电路中并且用于检测和测量三个平面（滚动，俯仰和偏航）中的运动，从而允许信号处理单元量化一般的三维运动。 陀螺仪可以并入用于便携式设备（例如移动手持机）中的IC，以为其提供惯性导航和移动检测和测量能力。