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1. 发明申请

WO2010045720A1 METHODS AND SYSTEMS FOR PROGRAMMABLE DIGITAL UP-CONVERSION 审中-公开
标题翻译：可编程数字上转换的方法和系统
公开(公告)号：WO2010045720A1
公开(公告)日：2010-04-29
申请号：PCT/CA2009/001495
申请日：2009-10-20
申请人： NORTEL NETWORKS LIMITED , MORRIS, Bradley John , FULLER, Arthur Thomas Gerald
发明人： MORRIS, Bradley John , FULLER, Arthur Thomas Gerald
IPC分类号： H04L27/00 , H03H17/02 , H03M1/66
CPC分类号： H03D7/161 , H03C1/547
摘要： Methods and apparatus are described herein that make use of complex tuning, the inherently repetitive nature of sampled signals, and programmable digital filtering to create a flexible digital up-conversion system that utilizes a digital-to-analog converter (DAC) with a fixed effective sample rate while still being adapted for tunability over a wide frequency range. With a knowledge of the fixed effective sample rate of the DAC and a desired frequency of up-conversion and combining complex tuning at baseband and up-sampling by a factor of N with a programmable passband filter configured to select one of a plurality of signal images resulting from the up-sampling, it is possible to translate a baseband input signal to a wide range of frequencies above or below Fs, without changing the sampling rate of the fixed rate DAC used in the up-conversion process.
摘要翻译：本文描述了使用复杂调谐，采样信号的固有重复性质和可编程数字滤波来创建灵活的数字上变频系统的方法和装置，其利用具有固定有效的数模转换器（DAC）采样率仍然适应于宽频率范围内的可调谐性。通过了解DAC的固定有效采样率和期望的上变频频率，并将基带上的复杂调谐和N倍的上采样与可配置为选择多个信号图像之一的可编程通带滤波器由于上采样，可以将基带输入信号转换到高于或低于Fs的宽频率范围，而不会改变上转换过程中使用的固定速率DAC的采样率。

2. 发明申请

WO2008119164A1 AMPLIFIER PRE-DISTORTION SYSTEMS AND METHODS 审中-公开
标题翻译：放大器预失真系统和方法
公开(公告)号：WO2008119164A1
公开(公告)日：2008-10-09
申请号：PCT/CA2008/000584
申请日：2008-03-28
申请人： NORTEL NETWORKS LIMITED , MORRIS, Bradley John , FULLER, Arthur Thomas Gerald
发明人： MORRIS, Bradley John , FULLER, Arthur Thomas Gerald
IPC分类号： H03F1/32 , H03F1/02 , H03F3/20 , H03F3/68 , H04B1/04 , H04Q7/30
CPC分类号： H04L27/366 , H03F1/0288 , H03F1/3247 , H03F2200/321
摘要： A method of optimizing performance of a multiple path amplifier includes: splitting an input signal to derive a respective sub-signal for each branch of the multiple path amplifier; independently pre-distorting each sub-signal using a known performance characteristic of its associated branch of the multiple path amplifier; and supplying each pre-distorted sub-signal to its associated branch of the multiple amplifier.
摘要翻译：一种优化多径放大器的性能的方法包括：分割输入信号以导出多路径放大器的每个分支的相应子信号; 使用其相关联的多路径放大器的分支的已知性能特征来独立地预失真每个子信号; 并将每个预失真的子信号提供给多放大器的相关分支。

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