Systems, methods, and apparatuses for a long delay generation technique for spectrum-sensing of cognitive radios
    42.
    发明授权
    Systems, methods, and apparatuses for a long delay generation technique for spectrum-sensing of cognitive radios 失效
    用于认知无线电频谱感知的长延迟生成技术的系统,方法和装置

    公开(公告)号:US07528751B2

    公开(公告)日:2009-05-05

    申请号:US11778557

    申请日:2007-07-16

    IPC分类号: H03M1/00

    CPC分类号: H04B17/382

    摘要: Embodiments of the invention may provide for a long delay generator for the spectrum sensing of cognitive radio systems. The long delay generator may include an Analog-to-Digital Converter (ADC), memory element, and Digital-to-Analog Converter (DAC). The memory element may utilize shift register bank or Random-Access Memory (RAM) cells. The long delay generator may provide for a selectable delay by digitizing the received signal, delaying the received signal in the digital domain, and reconstructing the delayed signal as an analog. The analog delayed signal may then be compared or otherwise correlated with the original input signal using an analog auto-correlation technique to determine whether a meaningful signal type has been identified or otherwise detected.

    摘要翻译: 本发明的实施例可以提供用于认知无线电系统的频谱感测的长延迟发生器。 长延迟发生器可以包括模数转换器(ADC),存储器元件和数模转换器(DAC)。 存储器元件可以利用移位寄存器组或随机存取存储器(RAM)单元。 长延迟发生器可以通过数字化接收的信号,延迟数字域中的接收信号,并将延迟的信号重建为模拟来提供可选择的延迟。 然后可以使用模拟自相关技术将模拟延迟信号与原始输入信号进行比较或相关,以确定是否已识别或以其他方式检测到有意义的信号类型。

    Systems and methods for determining Sensing Thresholds of a Multi-Resolution Spectrum Sensing (MRSS) technique for Cognitive Radio (CR) Systems
    44.
    发明申请
    Systems and methods for determining Sensing Thresholds of a Multi-Resolution Spectrum Sensing (MRSS) technique for Cognitive Radio (CR) Systems 有权
    用于确定用于认知无线电(CR)系统的多分辨率频谱感测(MRSS)技术的感测阈值的系统和方法

    公开(公告)号:US20080214130A1

    公开(公告)日:2008-09-04

    申请号:US12034570

    申请日:2008-02-20

    IPC分类号: H04B1/18

    CPC分类号: H04W8/005 H04W16/14 H04W16/22

    摘要: Systems and methods may be provided for threshold determinations for spectrum sensing. The systems and methods may include receiving a false alarm rate, where the false alarm rate is associated with false occupancy identifications of a spectrum segment, determining a noise floor as a function of a noise figure and characteristics of a multi-resolution spectrum sensing (MRSS) window, and calculating a sensing threshold based at least in part upon the false alarm rate and the noise floor. The systems and methods may also include determining whether a portion of an RF spectrum is occupied based at least in part on the calculated sensing threshold.

    摘要翻译: 可以提供用于频谱感测的阈值确定的系统和方法。 系统和方法可以包括接收误报率,其中误报率与频谱段的假占用标识相关联,确定作为噪声系数和多分辨率频谱感测特性(MRSS)的函数的本底噪声 )窗口,并且至少部分地基于所述误报率和所述本底噪声来计算感测阈值。 系统和方法还可以包括至少部分地基于所计算的感测阈值来确定RF频谱的一部分是否被占用。

    Systems, methods, and apparatuses for coarse spectrum-sensing modules
    45.
    发明授权
    Systems, methods, and apparatuses for coarse spectrum-sensing modules 失效
    用于粗糙频谱感测模块的系统,方法和装置

    公开(公告)号:US07668262B2

    公开(公告)日:2010-02-23

    申请号:US11458275

    申请日:2006-07-18

    IPC分类号: H04L27/06

    摘要: Systems, methods, and apparatuses are provided for coarse-sensing modules that are operative for providing initial determinations of spectrum occupancy. The coarse-sensing modules may include a wavelet waveform generator providing a plurality of wavelet pulses, and a multiplier that combines the wavelet pulses with an input signal to form a correlation signal. The coarse sensing modules may further include an integrator that receives the generated correlation signal from the multiplier, where the integrator determines correlation values from integrating the correlation signal, and a spectrum recognition module in communication with the integrator that determines an available spectrum segment based at least in part on the correlation values. In addition, the spectrum recognition module may determine an available spectrum segment by utilizing information from a spectrum usage database, where the spectrum usage database includes information associated with one or more known signal types.

    摘要翻译: 提供了用于粗略感测模块的系统,方法和装置,其用于提供频谱占用的初始确定。 粗糙感测模块可以包括提供多个小波脉冲的小波波形发生器,以及将小波脉冲与输入信号组合以形成相关信号的乘法器。 粗略感测模块还可以包括积分器,其从乘法器接收所产生的相关信号,其中积分器确定来自积分相关信号的相关值,以及与积分器通信的频谱识别模块,该频谱识别模块至少基于确定可用频谱段 部分归因于相关值。 此外,频谱识别模块可以通过利用来自频谱使用数据库的信息来确定可用频谱段,其中频谱使用数据库包括与一个或多个已知信号类型相关联的信息。

    Systems, Methods, and Apparatuses for Coarse-Sensing Modules
    46.
    发明申请
    Systems, Methods, and Apparatuses for Coarse-Sensing Modules 失效
    用于粗糙感测模块的系统,方法和设备

    公开(公告)号:US20070091720A1

    公开(公告)日:2007-04-26

    申请号:US11458275

    申请日:2006-07-18

    IPC分类号: G01V1/00

    摘要: Systems, methods, and apparatuses are provided for coarse-sensing modules that are operative for providing initial determinations of spectrum occupancy. The coarse-sensing modules may include a wavelet waveform generator providing a plurality of wavelet pulses, and a multiplier that combines the wavelet pulses with an input signal to form a correlation signal. The coarse sensing modules may further include an integrator that receives the generated correlation signal from the multiplier, where the integrator determines correlation values from integrating the correlation signal, and a spectrum recognition module in communication with the integrator that determines an available spectrum segment based at least in part on the correlation values. In addition, the spectrum recognition module may determine an available spectrum segment by utilizing information from a spectrum usage database, where the spectrum usage database includes information associated with one or more known signal types.

    摘要翻译: 提供了用于粗略感测模块的系统,方法和装置,其用于提供频谱占用的初始确定。 粗糙感测模块可以包括提供多个小波脉冲的小波波形发生器,以及将小波脉冲与输入信号组合以形成相关信号的乘法器。 粗略感测模块还可以包括积分器,其从乘法器接收所产生的相关信号,其中积分器确定来自积分相关信号的相关值,以及与积分器通信的频谱识别模块,该频谱识别模块至少基于确定可用频谱段 部分归因于相关值。 此外,频谱识别模块可以通过利用来自频谱使用数据库的信息来确定可用频谱段,其中频谱使用数据库包括与一个或多个已知信号类型相关联的信息。

    Systems and Methods for Switching Mode Power Amplifier Control
    48.
    发明申请
    Systems and Methods for Switching Mode Power Amplifier Control 有权
    开关模式功率放大器控制系统与方法

    公开(公告)号:US20090309661A1

    公开(公告)日:2009-12-17

    申请号:US12138965

    申请日:2008-06-13

    IPC分类号: H03G3/30

    摘要: Embodiments of the invention may provide for enhancement systems and methods for a power amplifier output control system. In an example embodiment, driver amplifier control may be provided in conjunction with power amplifier control to improve the power efficiency and/or dynamic range of the transmitter system. Furthermore, control over the driver amplifier may allow for relaxed power control slope, which may lessens the burden of digital to analog converters (DACs) in transmitter systems such as cellular transmitter systems. Also, systems and methods in accordance with example embodiments of the invention may provide a less sensitive solution to operational environment variations such as temperature, battery power voltage and implementation IC process.

    摘要翻译: 本发明的实施例可以提供用于功率放大器输出控制系统的增强系统和方法。 在示例实施例中,可以结合功率放大器控制来提供驱动器放大器控制,以提高发射机系统的功率效率和/或动态范围。 此外,对驱动放大器的控制可以允许松弛的功率控制斜率,这可以减轻诸如蜂窝发射机系统的发射机系统中的数模转换器(DAC)的负担。 而且,根据本发明的示例性实施例的系统和方法可以提供对诸如温度,电池电源电压和实施IC过程的操作环境变化的较不敏感的解决方案。

    ADAPTIVE COMBINER ERROR CALIBRATION ALGORITHMS IN ALL-DIGITAL OUTPHASING TRANSMITTER
    49.
    发明申请
    ADAPTIVE COMBINER ERROR CALIBRATION ALGORITHMS IN ALL-DIGITAL OUTPHASING TRANSMITTER 审中-公开
    全数字输出发生器中的自适应组合器错误校准算法

    公开(公告)号:US20100074367A1

    公开(公告)日:2010-03-25

    申请号:US12561890

    申请日:2009-09-17

    IPC分类号: H04L25/03 H04L27/12

    摘要: Systems and methods may include a signal component separator that receives a non-constant envelope input signal and at least one phase offset value, and generates first digital phase data and second digital phase data; at least one digital phase modulator that receives the first phase data and the second phase data and operates with a frequency synthesizer to generate a first component signal having a first constant envelope and a second component signal having a second constant envelope; at least one power amplifier that amplifies the first component signal and the second component signal; a non-isolated power combiner that combines the first amplified component signal and the second amplified component signal to generate an output signal having a non-constant envelope; and a mismatch compensator that monitors the output signal to determine the at least one phase offset value, where the at least one phase offset value is utilized by the signal component separator for phase adjustment.

    摘要翻译: 系统和方法可以包括接收非恒定包络输入信号和至少一个相位偏移值的信号分量分离器,并且产生第一数字相位数据和第二数字相位数据; 至少一个数字相位调制器,其接收第一相位数据和第二相位数据,并与频率合成器一起工作,以产生具有第一恒定包络线的第一分量信号和具有第二恒定包络线的第二分量信号; 至少一个放大第一分量信号和第二分量信号的功率放大器; 非隔离功率组合器,其组合所述第一放大分量信号和所述第二放大分量信号以产生具有非常数包络线的输出信号; 以及不匹配补偿器,其监视所述输出信号以确定所述至少一个相位偏移值,其中所述至少一个相位偏移值由所述信号分量分离器用于相位调整。

    SYSTEMS AND METHODS FOR A LEVEL-SHIFTING HIGH-EFFICIENCY LINC AMPLIFIER USING DYNAMIC POWER SUPPLY
    50.
    发明申请
    SYSTEMS AND METHODS FOR A LEVEL-SHIFTING HIGH-EFFICIENCY LINC AMPLIFIER USING DYNAMIC POWER SUPPLY 审中-公开
    使用动态电源的高效率LINC放大器的系统和方法

    公开(公告)号:US20100073084A1

    公开(公告)日:2010-03-25

    申请号:US12563710

    申请日:2009-09-21

    IPC分类号: H03F3/68

    摘要: Systems and methods may be provided for a LINC system having a level-shifting LINC amplifier. The systems and methods may include a dynamic power supply that is adjustable to provide at least a first voltage supply level and a second voltage supply level higher than the first voltage supply level; a first power amplifier that amplifies a first component signal to generate a first amplified signal; a second power amplifier that amplifiers a second component signal to generate a second amplified signal, where the first component signal and the second component signal are components of an original signal, where the first component signal and the second component signal each have a constant envelope, and where the original signal has a non-constant envelope, and where the first and second power amplifiers are biased at the first voltage supply level or the second voltage supply level based upon an analysis of an amplitude of the original signal.

    摘要翻译: 可以为具有电平移位LINC放大器的LINC系统提供系统和方法。 系统和方法可以包括动态电源,其可调节以提供高于第一电压供应电平的至少第一电压供应电平和第二电压供应电平; 第一功率放大器,其放大第一分量信号以产生第一放大信号; 第二功率放大器,放大第二分量信号以产生第二放大信号,其中第一分量信号和第二分量信号是原始信号的分量,其中第一分量信号和第二分量信号各自具有恒定的包络线, 并且其中原始信号具有非恒定包络,并且其中基于原始信号的幅度的分析,第一和第二功率放大器被偏置在第一电压供应电平或第二电压供应电平。