公开(公告)号：US08599904B2

公开(公告)日：2013-12-03

申请号：US12362994

申请日：2009-01-30

申请人： Wei An ,  Yosef Stein

发明人： Wei An ,  Yosef Stein

IPC分类号： H04B1/00

CPC分类号： H04B1/707 ,  G01S19/24 ,  G01S19/37

摘要： A receiver architecture for processing spread spectrum signals. The receiver has an RF front end to receive and down convert a broadcast signal to an intermediate frequency carrier. The IF signal is digitized and provided to a processor (which may be a software-driven DSP, an ASIC or other embodiment) for processing. A given IF carrier is removed and the signal is low pass filtered. The signal is provided to a number of channels, each, for example, correspond to a unique transmitter. On each channel the sample rate is reduced to a predetermined fixed rate with timing mismatch compensated. The Doppler frequency shift, as estimated for the channel, is removed succeedingly. A locally generated copy of the spreading code used by the transmitter is applied to the carrier and Doppler removed signal at the predetermined fixed sample rate. The de-spread signal is used to provide estimates of the Doppler shift and for subsequent sample selection. Pseudo-range and delta pseudo-range estimates from each channel are used to estimate, for example, the receiver's position.

公开(公告)号：US20140213197A1

公开(公告)日：2014-07-31

申请号：US13755942

申请日：2013-01-31

申请人： Wei An ,  Yosef Stein

发明人： Wei An ,  Yosef Stein

IPC分类号： H04B1/40

CPC分类号： H04B1/10

摘要： A wide/narrow-band RF transceiver receives a signal in wide-band RF spectrum; a processor analyzes the signal and narrows the bandwidth of the RF transceiver in accordance with a carrier frequency, bandwidth, and RF modulation type of the signal.

摘要翻译： 宽/窄带RF收发器以宽带RF频谱接收信号; 处理器根据信号的载波频率，带宽和RF调制类型分析信号并缩小RF收发器的带宽。

公开(公告)号：US20100194635A1

公开(公告)日：2010-08-05

申请号：US12362994

申请日：2009-01-30

申请人： Wei An ,  Yosef Stein

发明人： Wei An ,  Yosef Stein

IPC分类号： G01S1/00

CPC分类号： H04B1/707 ,  G01S19/24 ,  G01S19/37

摘要： A receiver architecture for processing spread spectrum signals. The receiver has an RF front end to receive and down convert a broadcast signal to an intermediate frequency carrier. The IF signal is digitized and provided to a processor (which may be a software-driven DSP, an ASIC or other embodiment) for processing. A given IF carrier is removed and the signal is low pass filtered. The signal is provided to a number of channels, each, for example, correspond to a unique transmitter. On each channel the sample rate is reduced to a predetermined fixed rate with timing mismatch compensated. The Doppler frequency shift, as estimated for the channel, is removed succeedingly. A locally generated copy of the spreading code used by the transmitter is applied to the carrier and Doppler removed signal at the predetermined fixed sample rate. The de-spread signal is used to provide estimates of the Doppler shift and for subsequent sample selection. Pseudo-range and delta pseudo-range estimates from each channel are used to estimate, for example, the receiver's position.

摘要翻译： 用于处理扩频信号的接收机架构。 接收器具有RF前端，以将广播信号接收和下变频到中频载波。 IF信号被数字化并提供给处理器（其可以是软件驱动的DSP，ASIC或其他实施例）用于处理。 去除给定的IF载波，并且信号被低通滤波。 该信号被提供给多个通道，每个通道例如对应于唯一的发送器。 在每个通道上，采样率降低到预定的固定速率，同时补偿了时间不匹配。 按通道估计的多普勒频移被随后删除。 发射机使用的扩展码的本地生成副本以预定的固定采样率被施加到载波和多普勒去除信号。 解扩信号用于提供多普勒频移的估计和随后的样本选择。 来自每个通道的伪范围和Δ伪距范围估计用于估计例如接收机的位置。

公开(公告)号：US20060106910A1

公开(公告)日：2006-05-18

申请号：US10990314

申请日：2004-11-16

申请人： Wei An

发明人： Wei An

IPC分类号： G06F7/52

CPC分类号： G06F7/724

摘要： In one aspect, a multiplier for performing multiplication of a first operand and a second operand is provided. The multiplier comprises a matrix having a plurality of matrix elements arranged in a plurality of columns, a first plurality of storage elements to store at least a portion of the first operand, the first plurality of storage elements connected diagonally to the matrix, and a second plurality of storage elements to store at least a portion of the second operand, the second plurality of storage elements connected vertically to the matrix. In another aspect, a multiplier for computing at least a partial product of a first operand having a first length and a second operand having a second length is provided. The multiplier comprises a first register to store at least a portion of the first operand, a second register to store at least a portion of the second operand, and a logic matrix formed from a plurality of matrix elements that together perform a multiplication operation, the logic matrix connected to the first register and the second register such that each matrix element receives at least one bit from the first register and at least one bit from the second register, wherein a number of the plurality of matrix elements does not exceed a product of the first length and the second length.

摘要翻译： 一方面，提供了用于执行第一操作数和第二操作数的乘法的乘法器。 所述乘法器包括具有布置在多个列中的多个矩阵元素的矩阵，第一多个存储元件，用于存储所述第一操作数的至少一部分，所述第一多个存储元件与所述矩阵对角连接;以及第二 多个存储元件以存储第二操作数的至少一部分，第二多个存储元件垂直于矩阵连接。 在另一方面，提供了一种用于计算具有第一长度的第一操作数和具有第二长度的第二操作数的至少部分乘积的乘法器。 所述乘法器包括：第一寄存器，用于存储所述第一操作数的至少一部分;存储所述第二操作数的至少一部分的第二寄存器;以及由多个矩阵元素形成的逻辑矩阵，所述多个矩阵元素一起执行乘法运算， 逻辑矩阵连接到第一寄存器和第二寄存器，使得每个矩阵元件接收来自第一寄存器的至少一个位和来自第二寄存器的至少一个位，其中多个矩阵元素的数目不超过 第一长度和第二长度。

公开(公告)号：US20050169353A1

公开(公告)日：2005-08-04

申请号：US10769996

申请日：2004-02-02

申请人： Wei An ,  Stephen Plante

发明人： Wei An ,  Stephen Plante

IPC分类号： H04B1/707

CPC分类号： H04B1/7117

摘要： Methods and apparatus for processing a spread spectrum baseband signal, such as a CDMA baseband signal, are provided. The method includes despreading samples of the baseband signals with two or more instances of a despreading code, the instances of the spreading code successively offset relative to the signal samples, to provide two or more despread results, and interpolating the two or more despread results based on an estimated finger location to provide a symbol estimate. The method provides post-despreading interpolation.

摘要翻译： 提供了用于处理诸如CDMA基带信号的扩展频谱基带信号的方法和装置。 该方法包括使用解扩码的两个或多个实例解扩基带信号的样本，扩展码相对于信号样本连续偏移的实例，以提供两个或更多个解扩结果，并且内插两个或多个解扩结果 在估计的手指位置以提供符号估计。 该方法提供解扩后插值。

公开(公告)号：US06603335B1

公开(公告)日：2003-08-05

申请号：US10167633

申请日：2002-06-11

申请人： Phil Macphail ,  Wei An

发明人： Phil Macphail ,  Wei An

IPC分类号： H03K406

CPC分类号： H03K17/163

摘要： A circuit for controlling a high frequency power amplifier for amplifying a signal for wireless transmission is disclosed. The circuit provides a control signal to the power amplifier at an output port thereof. The control signal has properties of rise time and fall time, where a delayed transition in this signal is based on charging and discharging of the capacitor using two current mirror circuits in order to provide the delayed transition. An advantage lies in that the time of this delayed transition is dependent primarily upon the current mirrors and substantially other than dependent upon the RC time constant of the circuit.

摘要翻译： 公开了一种用于控制用于放大无线传输信号的高频功率放大器的电路。 电路在其输出端口向功率放大器提供控制信号。 控制信号具有上升时间和下降时间的特性，其中该信号的延迟转换基于使用两个电流镜像电路的电容器的充电和放电以提供延迟的转换。 优点在于，该延迟转换的时间主要取决于电流镜，并且基本上不依赖于电路的RC时间常数。

公开(公告)号：US07398287B2

公开(公告)日：2008-07-08

申请号：US10643777

申请日：2003-08-19

申请人： Wei An

发明人： Wei An

IPC分类号： G06F1/02 ,  H04B1/00

CPC分类号： H04B1/70756 ,  G06F7/584 ,  H04J13/0022 ,  H04J13/10

摘要： A method of generating a pseudo-noise sequence without masking a linear feedback shift register (LFSR) generator is provided. An offset pseudo-noise sequence is generated at a desired offset from a reference psuedo-noise sequence by determining a corresponding initial state vector of the LFSR based on an arbitrary mask.

摘要翻译： 提供了一种在不屏蔽线性反馈移位寄存器（LFSR）发生器的情况下产生伪噪声序列的方法。 通过基于任意掩模确定LFSR的对应的初始状态向量，从偏离参考伪噪声序列产生偏移伪噪声序列。