公开(公告)号：US06430212B1

公开(公告)日：2002-08-06

申请号：US09522393

申请日：2000-03-09

申请人： Jalal Alisobhani ,  Donald K. Leimer ,  Richard Kai-Tuen Woo ,  Mark Philip Kaplan

发明人： Jalal Alisobhani ,  Donald K. Leimer ,  Richard Kai-Tuen Woo ,  Mark Philip Kaplan

IPC分类号： H04B1707

CPC分类号： H04L27/22 ,  H04B1/707 ,  H04L27/2017 ,  H04L2027/0028 ,  H04L2027/0055

摘要： A communication device includes a transmitter and receiver. The transmitter includes an M-ary encoder configured to generate an M−1 number of distinctive symbols each comprising k bits. M is equal to 2k and k is a positive integer. The transmitter also includes a code generator configured to produce spread spectrum codeword sequences based on the symbols generated by the M-ary encoder and based on a first and a second Gold code polynomials. The transmitter sends a radio signal based on the spread spectrum codeword sequences. The receiver is configured to receive the radio signal. The receiver includes a first shift register configured to receive an input signal generated based on the received radio signal and a second shift register configured to receive and circularly shift a locally generated codeword sequence that is identical to the codeword sequence used to encode the symbols. The receiver also includes an accumulator coupled to the first and second shift registers and configured to multiply and accumulate stored values in the first and second shift registers each time the second shift register is circularly shifted and a selecting device coupled to the accumulator and configured to identify one symbol from the plurality of symbols based on outputs from the accumulator. A method corresponding to the device is also provided.

摘要翻译： 通信设备包括发射机和接收机。 所述发射机包括M元编码器，所述M元编码器被配置为产生每个包括k位的M-1个不同符号。 M等于2k，k是正整数。 发射机还包括码发生器，其被配置为基于由M元编码器产生的符号并且基于第一和第二Gold码多项式来产生扩频码字序列。 发射机基于扩频码字序列发送无线电信号。 接收机被配置为接收无线电信号。 接收机包括：第一移位寄存器，被配置为接收基于所接收的无线电信号而生成的输入信号;以及第二移位寄存器，其被配置为接收和循环移位与用于编码符号的码字序列相同的本地生成的码字序列。 接收机还包括耦合到第一移位寄存器和第二移位寄存器的累加器，并且被配置为每当第二移位寄存器被循环移位时对第一移位寄存器和第二移位寄存器中存储的值进行乘法和累积，以及耦合到累加器并被配置为识别 基于来自累加器的输出的多个符号中的一个符号。 还提供了与该装置对应的方法。

公开(公告)号：US08188917B2

公开(公告)日：2012-05-29

申请号：US12414612

申请日：2009-03-30

申请人： Steven A. Gronemeyer ,  Sanjai Kohli ,  Mark A. Sturza ,  Donald K. Leimer

发明人： Steven A. Gronemeyer ,  Sanjai Kohli ,  Mark A. Sturza ,  Donald K. Leimer

IPC分类号： G01S19/34 ,  G01S19/24 ,  G01S19/23

CPC分类号： G01S19/34 ,  G01S19/235

摘要： A wireless device including a transceiver that utilizes a power supply is described. The wireless device includes a Global Positioning System (“GPS”) section having a plurality of GPS subsystems and a power controller in signal communication with the power supply and GPS section, wherein the power controller is configured to selectively power each GPS subsystem from the plurality of GPS subsystems.

摘要翻译： 描述了包括使用电源的收发器的无线设备。 无线设备包括具有多个GPS子系统的全球定位系统（“GPS”）部分和与电源和GPS部分进行信号通信的功率控制器，其中功率控制器被配置为从多个 的GPS子系统。