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    • 5. 发明申请
    • SYNCHRONOUS BUS ARCHITECTURE FOR DIGITAL PRE-DISTORTION SYSTEM
    • 数字预失真系统同步总线架构
    • US20160179715A1
    • 2016-06-23
    • US14580158
    • 2014-12-22
    • Arvind KaushikPeter Z. RashevAmrit P. SinghAkshat Mittal
    • Arvind KaushikPeter Z. RashevAmrit P. SinghAkshat Mittal
    • G06F13/24G06F13/28
    • G06F13/24G06F13/28H03F1/3247Y02D10/14
    • A system for storing pre-distorted output samples in a memory includes a sample counter, a programming interface module, and a comparator. The sample counter counts the pre-distorted output samples, generates a dynamic count value, receives a capture counter status signal, and generates a first count value. The programming interface module receives and outputs the first count value, an offset value, and a capture control signal, and generates a first interrupt signal. The comparator receives the first count value, the offset value, the dynamic count value, and the capture control signal, generates a final value, compares the final value with the dynamic count value, and generates a trigger signal when the final value equals the dynamic count value based on the capture control signal. The trigger signal initiates the storing of the pre-distorted output samples in the memory.
    • 用于将预失真输出样本存储在存储器中的系统包括采样计数器,编程接口模块和比较器。 样本计数器对预失真的输出样本进行计数,生成动态计数值,接收捕获计数器状态信号,并生成第一个计数值。 编程接口模块接收并输出第一计数值,偏移值和捕获控制信号,并产生第一中断信号。 比较器接收第一计数值,偏移值,动态计数值和捕获控制信号,生成最终值,将最终值与动态计数值进行比较,并在最终值等于动态计数值时产生触发信号 基于捕获控制信号的计数值。 触发信号启动将预失真输出样本存储在存储器中。
    • 6. 发明授权
    • System for calibrating power amplifier
    • 功率放大器校准系统
    • US09231530B1
    • 2016-01-05
    • US14591928
    • 2015-01-08
    • Arvind KaushikPeter Z. RashevAmrit P. SinghAkshat Mittal
    • Arvind KaushikPeter Z. RashevAmrit P. SinghAkshat Mittal
    • H04K1/02H04L25/03H04L25/49H03F1/32H04B1/04
    • H04B1/0475H03F1/3241H03F1/3247H03F3/24H03F2200/321H04B17/13H04B2001/0425H04W52/362
    • A system for calibrating a power amplifier (PA) includes a memory, a processor, a digital pre-distorter (DPD), and a data converter. The DPD includes a programming interface module, a pattern generator, a multiplier, and a pre-distorter module. The multiplier multiplies reference baseband stream data from the memory with pattern coefficient data generated by the pattern generator to generate shaped reference baseband stream data. The pre-distorter module generates pre-distorted shaped reference baseband stream data. The PA receives a low-power reference radio frequency (RF) signal corresponding to the pre-distorted shaped reference baseband stream data and generates a high-power reference RF signal. The processor receives and compares the pre-distorted shaped reference baseband stream data with amplified shaped reference baseband stream data corresponding to the high-power reference RF signal, and adjusts pre-distortion parameters in the pre-distorter module based on the comparison such that the PA generates a linear high-power RF signal.
    • 用于校准功率放大器(PA)的系统包括存储器,处理器,数字预失真器(DPD)和数据转换器。 DPD包括编程接口模块,模式发生器,乘法器和预失真器模块。 乘法器将来自存储器的参考基带流数据与由模式发生器产生的模式系数数据相乘以产生形状参考基带流数据。 预失真器模块生成预失真的参考基带流数据。 PA接收与预失真的参考基带流数据相对应的低功率参考射频(RF)信号,并产生高功率参考RF信号。 处理器接收并比较预失真的参考基带流数据与对应于大功率参考RF信号的放大的成形参考基带流数据,并且基于比较调整预失真器模块中的预失真参数,使得 PA产生线性高功率RF信号。
    • 7. 发明授权
    • Wireless communication apparatus and method
    • 无线通信装置及方法
    • US09088941B2
    • 2015-07-21
    • US13938248
    • 2013-07-10
    • Arvind GargSomvir DahiyaSachin JainArvind KaushikArindam Sinha
    • Arvind GargSomvir DahiyaSachin JainArvind KaushikArindam Sinha
    • H04W56/00H04L12/863
    • H04W56/001H04L47/622
    • A transmission node for use in a wireless communication network includes a first CPRI unit for transmitting auxiliary data to a second CPRI unit in the transmission node. A memory unit stores control word data of the auxiliary data. A memory write block is connected between the first CPRI unit and the memory unit for writing the control word data to the memory unit based on a first set of frame timing signals received from the first CPRI unit. A memory read and merge block is connected to the memory unit for reading the control word data stored in the memory unit based on a second set of frame timing signals, merging the control word data with IQ data, and transmitting the merged auxiliary data to the second CPRI unit.
    • 用于无线通信网络的传输节点包括用于将辅助数据发送到传输节点中的第二CPRI单元的第一CPRI单元。 存储单元存储辅助数据的控制字数据。 存储器写入块连接在第一CPRI单元和存储器单元之间,用于基于从第一CPRI单元接收的第一组帧定时信号将控制字数据写入存储器单元。 存储器读和合并块连接到存储器单元,用于基于第二组帧定时信号读取存储在存储器单元中的控制字数据,将控制字数据与IQ数据合并,并将合并的辅助数据发送到 第二个CPRI单位。
    • 9. 发明申请
    • TIMING SYNCHRONIZATION CIRCUIT FOR WIRELESS COMMUNICATION APPARATUS
    • 用于无线通信设备的同步同步电路
    • US20160041579A1
    • 2016-02-11
    • US14452535
    • 2014-08-06
    • Inayat AliArvind KaushikSachin PrakashArindam Sinha
    • Inayat AliArvind KaushikSachin PrakashArindam Sinha
    • G06F1/12G06F1/08
    • G06F1/08G06F1/10H03J7/00H03L7/00H04B15/00
    • A transmission node includes a digital front-end device that provides functional clocks for JESD204B based data transmission. The front-end device includes a PLL for generating a phase locked clock based on a device clock of the front-end device, a clock dividing unit for generating the functional clocks by dividing the phase locked clock, a clock gating unit connected between the PLL and the clock dividing unit, and a system reference signal sampling unit for timing radio frame boundaries. The clock gating unit gates the phase locked clock to align the functional clocks with the device clock within a predetermined number of cycles of the phase locked clock, upon locking of the PLL or receipt of a system resynchronization request. The system reference signal sampling unit samples the system reference signal with zero-cycle latency between device clock and phase locked clock.
    • 传输节点包括提供用于基于JESD204B的数据传输的功能时钟的数字前端设备。 前端装置包括用于基于前端装置的装置时钟产生锁相时钟的PLL,用于通过分相锁相时钟产生功能时钟的时钟分割部,连接在PLL之间的时钟门控装置 和时钟分割单元,以及用于定时无线帧边界的系统参考信号采样单元。 时钟门控单元门锁相锁定时钟,以便在锁定PLL或接收系统重新同步请求时,将功能时钟与相位锁定时钟的预定数量周期内的器件时钟对准。 系统参考信号采样单元在设备时钟和锁相时钟之间以零周期等待时间采样系统参考信号。