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1.发明授权公开(公告)号：US07577160B2
公开(公告)日：2009-08-18
申请号：US11663607
申请日：2005-02-28
申请人： Torbjorn A. Larsson , Nishant Kumar
发明人： Torbjorn A. Larsson , Nishant Kumar
IPC分类号： H04Q11/02
CPC分类号： H04L27/2602 , H04B1/7176 , H04L5/0012 , H04L27/2626 , H04L27/2647
摘要： A method of improving frequency diversity of a signal that includes a plurality of orthogonal frequency division multiplexing (OFDM) symbols comprises receiving an input data sequence, mapping the input data sequence to a transmission data sequence, wherein the mapping includes performing a mapping operation and generating an OFDM symbol using the transmission data sequence. An orthogonal frequency division multiplexing (OFDM) transmitter comprises an interface configured to receive an input data sequence, and a processor configured to perform a mapping operation, to map the input data sequence to a transmission data sequence wherein the mapping includes performing the mapping operation, and to generate an OFDM symbol using the transmission data sequence.
摘要翻译： 一种改善包括多个正交频分复用（OFDM）符号的信号的频率分集的方法，包括接收输入数据序列，将输入数据序列映射到传输数据序列，其中映射包括执行映射操作和生成 使用传输数据序列的OFDM符号。 正交频分复用（OFDM）发射机包括被配置为接收输入数据序列的接口和被配置为执行映射操作的处理器，以将输入数据序列映射到传输数据序列，其中映射包括执行映射操作， 并使用发送数据序列生成OFDM符号。
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2.发明申请公开(公告)号：US20090252241A1
公开(公告)日：2009-10-08
申请号：US12380405
申请日：2009-02-25
申请人： Torbjorn A. Larsson , Nishant Kumar
发明人： Torbjorn A. Larsson , Nishant Kumar
CPC分类号： H04L5/0007 , H04B1/713 , H04B1/71635 , H04L5/0044 , H04L25/03828 , H04L27/2623 , H04L27/2626
摘要： A method of shaping an orthogonal frequency division multiplexing (OFDM) signal spectrum of a transmitted signal is disclosed. An input signal including an input component is received and a first instance of the input component is generated. The method also includes determining that a second instance of the input component is to be different than the first instance. The second instance of the input component that is different from the first instance is generated. An output signal to be transmitted is generated and includes the first instance and the second instance of the input component.
摘要翻译： 公开了一种形成发射信号的正交频分复用（OFDM）信号频谱的方法。 接收包括输入部件的输入信号，生成输入部件的第一实例。 该方法还包括确定输入组件的第二实例不同于第一实例。 生成与第一个实例不同的输入组件的第二个实例。 生成要发送的输出信号，并且包括输入分量的第一实例和第二实例。
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公开(公告)号：US07519123B1
公开(公告)日：2009-04-14
申请号：US11099224
申请日：2005-04-04
申请人： Torbjorn A. Larsson , Nishant Kumar
发明人： Torbjorn A. Larsson , Nishant Kumar
IPC分类号： H04K1/10
CPC分类号： H04L5/0007 , H04B1/713 , H04B1/71635 , H04L5/0044 , H04L25/03828 , H04L27/2623 , H04L27/2626
摘要： A method of shaping an orthogonal frequency division multiplexing (OFDM) signal spectrum of a transmitted signal is disclosed. An input signal including an input component is received and a first instance of the input component is generated. The method also includes determining that a second instance of the input component is to be different than the first instance. The second instance of the input component that is different from the first instance is generated. An output signal to be transmitted is generated and includes the first instance and the second instance of the input component.
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4.发明授权Method and system for repurposing of a global navigation satellite system receiver for receiving low-earth orbit communication satellite signals 有权一种用于接收低地球轨道通信卫星信号的全球导航卫星系统接收机的再利用方法和系统公开(公告)号：US09077429B2
公开(公告)日：2015-07-07
申请号：US13413916
申请日：2012-03-07
IPC分类号： H04B7/185
CPC分类号： G01S19/46 , H04B7/1853 , H04B7/18547 , H04W64/006
摘要： Methods and systems for repurposing of a global navigation satellite system receiver for receiving low-earth orbit (LEO) communication satellite timing signals may comprise receiving medium Earth orbit (MEO) satellite signals and/or LEO signals in a receiver of the communication device. A radio frequency (RF) path may be configured to down-convert either of the signals, and a position of the communication device may be calculated utilizing the down-converted signals. The signals may be down-converted utilizing a local oscillator signal generated by a phase locked loop (PLL), which may be delta-sigma modulated via a fractional-N divider. A clock signal may be communicated to the PLL utilizing a temperature-compensated crystal oscillator. The signals may be down-converted to an intermediate frequency or down-converted directly to baseband frequencies. The signals may be processed utilizing surface acoustic wave (SAW) filters. In-phase and quadrature signals may be processed in the RF path utilizing a two-stage polyphase filter.
摘要翻译： 用于重新利用用于接收低地球轨道（LEO）通信卫星定时信号的全球导航卫星系统接收机的方法和系统可以包括在通信设备的接收机中接收介质地球轨道（MEO）卫星信号和/或LEO信号。 射频（RF）路径可以被配置为下变频信号中的任一个，并且可以利用下变频信号来计算通信设备的位置。 信号可以利用由锁相环（PLL）产生的本地振荡器信号进行下变频，锁相环（PLL）可经由分数N分频器进行Δ-Σ调制。 可以使用温度补偿晶体振荡器将时钟信号传送到PLL。 信号可以被下变频到中频或者直接下变频到基带频率。 可以使用表面声波（SAW）滤波器来处理信号。 可以使用两级多相滤波器在RF路径中处理同相和正交信号。
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5.发明授权公开(公告)号：US08738034B2
公开(公告)日：2014-05-27
申请号：US13540957
申请日：2012-07-03
CPC分类号： H04W4/04 , G01S5/02 , G01S19/01 , G06Q20/202 , H04M1/72572 , H04W4/02 , H04W4/50 , H04W64/006 , H04W76/10 , H04W84/12
摘要： Methods and systems for global navigation satellite system configuration of wireless communication applications may comprise determining a location of a wireless communication device (WCD) comprising a medium Earth orbit (MEO) radio frequency (RF) path and a low Earth orbit (LEO) RF path utilizing received LEO signals. A wireless function of the WCD may be configured based on the location, and may comprise a power level of WiFi circuitry in the WCD. The determined location and a transaction ID for the POS transaction may be stored utilizing a security processor. The MEO RF path may be powered down based on the determined location. The wireless function may comprise a synchronization of data on the WCD with devices in a home location. The WCD may comprise a femtocell device or a set-top box, and may be controlled by a reduced instruction set computing (RISC) central processing unit (CPU).
摘要翻译： 用于无线通信应用的全球导航卫星系统配置的方法和系统可以包括确定包括介质地球轨道（MEO）射频（RF）路径和低地球轨道（LEO）RF路径）的无线通信设备（WCD）的位置 利用收到的LEO信号。 可以基于该位置来配置WCD的无线功能，并且可以包括WCD中的WiFi电路的功率电平。 可以使用安全处理器来存储确定的位置和POS事务的事务ID。 MEO RF路径可以基于确定的位置被关闭。 无线功能可以包括WCD上的数据与家庭位置中的设备的同步。 WCD可以包括毫微微蜂窝设备或机顶盒，并且可以由精简指令集计算（RISC）中央处理单元（CPU）来控制。
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6.发明申请Method And System For Repurposing Of A Global Navigation Satellite System Receiver For Receiving Low-Earth Orbit Communication Satellite Signals 有权用于重新接收低地球轨道通信卫星信号的全球导航卫星系统接收机的方法和系统公开(公告)号：US20130107910A1
公开(公告)日：2013-05-02
申请号：US13413916
申请日：2012-03-07
IPC分类号： H04B1/7073
CPC分类号： G01S19/46 , H04B7/1853 , H04B7/18547 , H04W64/006
摘要： Methods and systems for repurposing of a global navigation satellite system receiver for receiving low-earth orbit (LEO) communication satellite timing signals may comprise receiving medium Earth orbit (MEO) satellite signals and/or LEO signals in a receiver of the communication device. A radio frequency (RF) path may be configured to down-convert either of the signals, and a position of the communication device may be calculated utilizing the down-converted signals. The signals may be down-converted utilizing a local oscillator signal generated by a phase locked loop (PLL), which may be delta-sigma modulated via a fractional-N divider. A clock signal may be communicated to the PLL utilizing a temperature-compensated crystal oscillator. The signals may be down-converted to an intermediate frequency or down-converted directly to baseband frequencies. The signals may be processed utilizing surface acoustic wave (SAW) filters. In-phase and quadrature signals may be processed in the RF path utilizing a two-stage polyphase filter.
摘要翻译： 用于重新利用用于接收低地球轨道（LEO）通信卫星定时信号的全球导航卫星系统接收机的方法和系统可以包括在通信设备的接收机中接收介质地球轨道（MEO）卫星信号和/或LEO信号。 射频（RF）路径可以被配置为下变频信号中的任一个，并且可以利用下变频信号来计算通信设备的位置。 信号可以利用由锁相环（PLL）产生的本地振荡器信号进行下变频，锁相环（PLL）可经由分数N分频器进行Δ-Σ调制。 可以使用温度补偿晶体振荡器将时钟信号传送到PLL。 信号可以被下变频到中频或者直接下变频到基带频率。 可以使用表面声波（SAW）滤波器来处理信号。 可以使用两级多相滤波器在RF路径中处理同相和正交信号。
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公开(公告)号：US20080019420A1
公开(公告)日：2008-01-24
申请号：US11726737
申请日：2007-03-21
CPC分类号： H04W72/02 , H04L5/0007 , H04L5/0091 , H04W40/248 , H04W88/06
摘要： A protected wireless device is avoided. An indication is received that another wireless device has detected a protected wireless device. The protected wireless device is avoided in the event the wireless device that detected the protected wireless device is within a threshold number of hops from the wireless device that received the indication.
摘要翻译： 避免受保护的无线设备。 接收到另一无线设备检测到受保护的无线设备的指示。 在检测到受保护的无线设备的无线设备处于接收到指示的无线设备的阈值跳数内的情况下，可以避免受保护的无线设备。
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公开(公告)号：US20070082633A1
公开(公告)日：2007-04-12
申请号：US11281260
申请日：2005-11-16
IPC分类号： H04B1/18
CPC分类号： H04L5/023 , H04B1/719 , H04L27/2602
摘要： Avoiding a frequency spectrum in a wireless medium is disclosed. An identification of the frequency spectrum in the wireless medium to avoid is obtained. A set of subcarriers to suppress based at least on part on the frequency spectrum to avoid is determined. Information is reallocated in response to the set of subcarriers to suppress.
摘要翻译： 公开了在无线介质中避免频谱。 获得无线介质中要避免的频谱的识别。 确定至少部分基于频谱以避免的一组要抑制的子载波。 信息被重新分配以响应要抑制的子载波集合。
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9.发明授权Method and system for power optimization for a global navigation satellite system 有权全球导航卫星系统功率优化方法与系统公开(公告)号：US09494692B2
公开(公告)日：2016-11-15
申请号：US13626660
申请日：2012-09-25
摘要： Methods and systems for power optimization of a global navigation satellite system may comprise receiving LEO RF satellite signals utilizing a LEO satellite signal receiver path (LEO Rx) in a wireless communication device (WCD). Circuitry in the LEO Rx may be configured in a powered down state based on a sleep schedule. A location of the wireless communication device may be determined utilizing LEO signals received by the LEO Rx. The sleep schedule may be based on a desired accuracy of the determined location, the relative strengths of signals received from a plurality of LEO satellites, a relevance factor generated by a position engine and communicated to the sort module, or a desired power level of the WCD. The relative strengths of received signals may be compared utilizing a sort module in a LEO demodulator in the LEO satellite signal receiver path.
摘要翻译： 用于全球导航卫星系统的功率优化的方法和系统可包括利用无线通信设备（WCD）中的LEO卫星信号接收机路径（LEO Rx）来接收LEO RF卫星信号。 LEO Rx中的电路可以基于睡眠调度配置在掉电状态。 无线通信设备的位置可以利用由LEO Rx接收的LEO信号来确定。 休眠时间表可以基于所确定的位置的期望精度，从多个LEO卫星接收到的信号的相对强度，由位置引擎产生并传送到分类模块的相关因子，或者所需的功率水平 WCD。 可以利用LEO卫星信号接收机路径中的LEO解调器中的分类模块来比较接收信号的相对强度。
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公开(公告)号：US20130106652A1
公开(公告)日：2013-05-02
申请号：US13462358
申请日：2012-05-02
IPC分类号： G01S19/42
CPC分类号： G01S19/423 , G01S19/33 , G01S19/34
摘要： Methods and systems for a dual mode global navigation satellite system may comprise selectively enabling a medium Earth orbit (MEO) radio frequency (RF) path and a low Earth orbit (LEO) RF path in a wireless communication device to receive RF satellite signals. The signals may be down-converted to determine a position of the wireless device. The signals may be down-converted utilizing local oscillator signals from a phase locked loop (PLL). The RF paths may be time-division duplexed by the selective enabling of the MEO and LEO paths. Acquisition and tracking modules in the MEO RF path may be blanked when the LEO RF path is enabled. The MEO RF path may be powered down when the LEO RF path is enabled. The signals may be down-converted to an intermediate frequency before down-converting to baseband frequencies or may be down-converted directly to baseband frequencies. In-phase and quadrature signals may be processed.
摘要翻译： 用于双模式全球导航卫星系统的方法和系统可以包括在无线通信设备中选择性地启用介质地球轨道（MEO）射频（RF）路径和低地球轨道（LEO）RF路径以接收RF卫星信号。 信号可以被下变频以确定无线设备的位置。 可以使用来自锁相环（PLL）的本地振荡器信号来对信号进行下变频。 RF路径可以通过MEO和LEO路径的选择性启用而被时分双工。 当LEO RF路径启用时，MEO RF路径中的采集和跟踪模块可能会被消隐。 当LEO射频路径启用时，MEO RF路径可能会关闭电源。 信号可以在下变频到基带频率之前下变频到中频，或者可以直接下变频到基带频率。 可以处理同相和正交信号。
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