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    • 2. 发明授权
    • Dynamic gain for DAC illumination control
    • DAC照明控制的动态增益
    • US09059877B2
    • 2015-06-16
    • US14167969
    • 2014-01-29
    • QUALCOMM Incorporated
    • Brian James LanglaisJoubin KarimiEhab TahirGregory Allen Magin
    • H04B7/00H04L25/02H03G3/30
    • H04L25/02H03G3/3042
    • A transmitting device may control digital-to-analog converter (DAC) illumination to optimize signal to noise ratio of a transmission signal. DAC illumination may be adjusted based, at least in part, on analog gain and estimated total transmit power of a particular transmission signal. For each destination, total transmit power may be estimated based on tone map, amplitude map, back-off settings, or other characteristics. The estimated total transmit power is used to determine an appropriate analog gain. Once analog gain and total transmit power are known, fine control of SNR may be achieved by adjusting power level in the digital domain. A digital power control setting is used to scale the amplitude of the digital baseband signal prior to DAC operation. The DAC illumination of the digital baseband signal allows the DAC to operate at an optimized power level within the digital range of the DAC.
    • 传输设备可以控制数模转换器(DAC)照明以优化传输信号的信噪比。 可以至少部分地基于特定传输信号的模拟增益和估计总发射功率来调整DAC照明。 对于每个目的地,总发射功率可以基于色调映射,幅度映射,退避设置或其他特性来估计。 估计的总发射功率用于确定适当的模拟增益。 一旦模拟增益和总发射功率已知,则可以通过调整数字域中的功率电平来实现SNR的精细控制。 数字功率控制设置用于在DAC操作之前缩放数字基带信号的幅度。 数字基带信号的DAC照明允许DAC在DAC的数字范围内以优化的功率电平工作。
    • 5. 发明授权
    • Error correction for powerline communication modem interface
    • 电力线通信调制解调器接口的纠错
    • US09280405B2
    • 2016-03-08
    • US13841997
    • 2013-03-15
    • QUALCOMM Incorporated
    • Gregory Allen MaginCelestino Anastasio Corral
    • G06F11/00G06F11/30G08C25/00H03M13/00H04L1/00G06F11/07H04B3/54H04B3/56
    • G06F11/0706H04B3/542H04B3/56H04B2203/542H04B2203/5491
    • A powerline communication (PLC) power supply and modem interface can be implemented using a power supply processing unit coupled with a PLC modem unit. The power supply processing unit generates a composite PLC signal comprising a PLC signal and a DC power signal modulated with a zero cross signal (all determined from an AC powerline signal). High-powered components of the PLC modem unit can cause signal distortion in the zero cross signal component of the composite PLC signal making it difficult to extract zero cross information. An error correction unit can be implemented at the PLC modem unit to minimize the signal distortion and generate a zero cross signal with little or no error. The PLC modem unit also extracts the PLC signal and the DC power signal from the composite PLC signal, and processes the PLC signal using the zero cross information extracted from the corrected zero cross signal.
    • 电力线通信(PLC)电源和调制解调器接口可以使用与PLC调制解调器单元耦合的电源处理单元来实现。 电源处理单元生成包括PLC信号和用零交叉信号(全部由AC电力线信号确定)的DC电力信号的复合PLC信号。 PLC调制解调器单元的大功率组件可能导致复合PLC信号的零交叉信号分量中的信号失真,使得难以提取零交叉信息。 可以在PLC调制解调器单元处实施纠错单元以最小化信号失真并产生很少或没有错误的零交叉信号。 PLC调制解调器单元还从复合PLC信号中提取PLC信号和直流电源信号,并使用从校正的零交叉信号中提取的零交叉信息处理PLC信号。
    • 7. 发明申请
    • DYNAMIC GAIN FOR DAC ILLUMINATION CONTROL
    • 用于DAC照明控制的动态增益
    • US20140355712A1
    • 2014-12-04
    • US14167969
    • 2014-01-29
    • QUALCOMM Incorporated
    • Brian James LanglaisJoubin KarimiEhab TahirGregory Allen Magin
    • H04L25/02
    • H04L25/02H03G3/3042
    • A transmitting device may control digital-to-analog converter (DAC) illumination to optimize signal to noise ratio of a transmission signal. DAC illumination may be adjusted based, at least in part, on analog gain and estimated total transmit power of a particular transmission signal. For each destination, total transmit power may be estimated based on tone map, amplitude map, back-off settings, or other characteristics. The estimated total transmit power is used to determine an appropriate analog gain. Once analog gain and total transmit power are known, fine control of SNR may be achieved by adjusting power level in the digital domain. A digital power control setting is used to scale the amplitude of the digital baseband signal prior to DAC operation. The DAC illumination of the digital baseband signal allows the DAC to operate at an optimized power level within the digital range of the DAC.
    • 传输设备可以控制数模转换器(DAC)照明以优化传输信号的信噪比。 可以至少部分地基于特定传输信号的模拟增益和估计总发射功率来调整DAC照明。 对于每个目的地,总发射功率可以基于色调映射,幅度映射,退避设置或其他特性来估计。 估计的总发射功率用于确定适当的模拟增益。 一旦模拟增益和总发射功率已知,则可以通过调整数字域中的功率电平来实现SNR的精细控制。 数字功率控制设置用于在DAC操作之前缩放数字基带信号的幅度。 数字基带信号的DAC照明允许DAC在DAC的数字范围内以优化的功率电平工作。
    • 9. 发明授权
    • Powerline communication diversity coupling technique
    • 电力线通信分集耦合技术
    • US09325374B2
    • 2016-04-26
    • US13723096
    • 2012-12-20
    • QUALCOMM Incorporated
    • Gregory Allen MaginLawrence W. Yonge, III
    • G05B11/01H04B3/56H04B3/54
    • H04B3/54H04B3/56H04B2203/5466H04B2203/5483H04B2203/5491
    • A powerline communication diversity coupling mechanism may implement a transformer coupling unit. The transformer coupling unit can receive a communication signal to be coupled to a plurality of powerline communication channels for transmission in a powerline communication network. The transformer coupling unit can split the communication signal into a plurality of communication signals for transmission. The transformer coupling unit can couple each of the plurality of the communication signals to a corresponding one of a plurality of the powerline communication channels for transmission in the powerline communication network. Also, the transformer coupling unit can receive a plurality of communication signals on each of a plurality of powerline communication channels. The transformer coupling unit can combine the plurality of the communication signals into a communication signal. The transformer coupling unit may then couple the communication signal to an analog front end and other processing units for processing the communication signal.
    • 电力线通信分集耦合机构可以实现变压器耦合单元。 变压器耦合单元可以接收要耦合到多个电力线通信信道的通信信号,以在电力线通信网络中传输。 变压器耦合单元可将通信信号分离成多个通信信号进行传输。 变压器耦合单元可以将多个通信信号中的每一个耦合到多个电力线通信信道中的相应一个,用于在电力线通信网络中传输。 此外,变压器耦合单元可以在多个电力线通信信道中的每一个上接收多个通信信号。 变压器耦合单元可以将多个通信信号组合成通信信号。 然后,变压器耦合单元可以将通信信号耦合到模拟前端和用于处理通信信号的其它处理单元。