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1. 发明申请

WO2015198092A1 SIGNAL AMPLIFICATION AND TRANSMISSION BASED ON COMPLEX DELTA SIGMA MODULATOR 审中-公开
标题翻译：基于复合DELTA SIGMA调制器的信号放大和传输
公开(公告)号：WO2015198092A1
公开(公告)日：2015-12-30
申请号：PCT/IB2014/062544
申请日：2014-06-23
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , EBRAHIMI, Mojtaba , HELAOUI, Mohamed , GHANNOUCHI, Fadhel , ELSAYED, Fahmi , MORRIS, Bradley John
发明人： EBRAHIMI, Mojtaba , HELAOUI, Mohamed , GHANNOUCHI, Fadhel , ELSAYED, Fahmi , MORRIS, Bradley John
IPC分类号： H03M7/30
CPC分类号： H04B1/0475 , H03F3/19 , H03F3/245 , H03F2200/451 , H03M7/3015 , H03M7/302 , H04L27/2614
摘要： Apparatuses and methods for power amplification and signal transmission using complex delta-sigma modulation are disclosed. In one embodiment, a complex delta sigma modulator unit comprising a complex polar quantizer within an integrator loop is disclosed. The complex polar quantizer quantizes the envelope of a complex integrated signal and produces a complex quantized output signal of substantially constant envelope. The complex quantized output signal is used in deriving a complex feedback signal within the integrator loop of the complex DSM. The complex quantized output signal may be used in driving a power amplifier substantially at saturation. In some embodiments, an adjacent channel power ratio (ACPR) enhancement technique is used to reduce the quantization noise in the complex quantized output signal.
摘要翻译：公开了使用复数Δ-Σ调制的功率放大和信号传输的装置和方法。在一个实施例中，公开了一种在积分器环路内包括复极化量化器的复数ΔΣ调制器单元。复极化量化器量化复合积分信号的包络并产生基本恒定包络的复数量化输出信号。复数量化输出信号用于在复数DSM的积分器环路内导出复数反馈信号。复数量化输出信号可以用于基本上饱和地驱动功率放大器。在一些实施例中，使用相邻信道功率比（ACPR）增强技术来减少复数量化输出信号中的量化噪声。

2. 发明申请

WO2015015476A2 LEVEL DE-MULTEPLEXED DELTA SIGMA MODULATOR BASED TRANSMITTER 审中-公开
标题翻译：基于DE-MULTEPLEXED DELTA SIGMA调制器的发射机
公开(公告)号：WO2015015476A2
公开(公告)日：2015-02-05
申请号：PCT/IB2014/063685
申请日：2014-08-04
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , MOJTABA, Ebrahimi , MORRIS, Bradley John , ELSAYED, Fahmi , HELAOUI, Mohamed , GHANNOUCHI, Fadhel
发明人： MOJTABA, Ebrahimi , MORRIS, Bradley John , ELSAYED, Fahmi , HELAOUI, Mohamed , GHANNOUCHI, Fadhel
CPC分类号： H04B1/0475 , H03F1/02 , H03F3/24 , H03M3/02 , H03M3/50 , H03M7/302 , H03M7/3026 , H03M7/304 , H04B1/02 , H04B2001/045
摘要： This specification discloses a level de-multiplexed DSM based transmitter and a method for providing the same. Broadly embodiments of the present specification enable wireless transmitters that are based on multi-level de-multiplexed DSM. A three-level de- multiplexed DSM based transmitter is disclosed as an example. More generally, the use of m-level de-multiplexed DSM is also taught, the specification thereby being enabling for broader applications to a person skilled in the art. At least one of the efficiency and linearity of transmitters can be enhanced as required for specific applications by a person of skill in the art in view of this specification and the teachings of its disclosed embodiments.
摘要翻译：本说明书公开了一种基于电平解复用的基于DSM的发射机及其提供方法。本说明书的广义实施例使得基于多级解复用DSM的无线发射机成为可能。作为例子公开了三电平解复用基于DSM的发射机。更一般地讲，还教导了使用m级解复用DSM，因此该说明书使得本领域技术人员能够进行更广泛的应用。鉴于本说明书及其公开实施例的教导，本领域技术人员根据具体应用的需要可以增强发射器的效率和线性中的至少一个。

3. 发明申请

WO2013136319A2 PROGRAMMABLE DIGITAL UP-CONVERSION FOR CONCURRENT MULTI-BAND SIGNALS 审中-公开
标题翻译：并发多频带信号的可编程数字上变频
公开(公告)号：WO2013136319A2
公开(公告)日：2013-09-19
申请号：PCT/IB2013/052526
申请日：2013-03-28
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
发明人： MORRIS, Bradley John
IPC分类号： H04B1/00
CPC分类号： H04B1/0007 , H03D7/161
摘要： Embodiments of a digital up-conversion system for a concurrent multi- band signal and methods of operation thereof are disclosed. In one embodiment, a digital up-conversion system includes multiple digital up-converter chains, each for a different frequency band of the concurrent multi-band signal, and a digital combiner that combines up-converted signals output by the digital up-converter chains to provide a combined digital signal. The combined digital signal is processed by one or more additional processing components including a digital- to-analog converter (DAC) to provide the concurrent multi-band signal.
摘要翻译：公开了用于并发多频带信号的数字上变频系统及其操作方法的实施例。在一个实施例中，数字上变频系统包括多个数字上变频器链，每个数字上变频器链用于并发多频带信号的不同频带，以及数字组合器，用于组合由数字上变频器链输出的上变频信号提供组合的数字信号。组合的数字信号由一个或多个附加处理组件处理，包括数模转换器（DAC）以提供并发的多频带信号。

4. 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。

5. 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。

6. 发明申请

WO2012066381A1 CONFIGURABLE BASIS-FUNCTION GENERATION FOR NONLINEAR MODELING 审中-公开
标题翻译：非线性建模的可配置基函数生成
公开(公告)号：WO2012066381A1
公开(公告)日：2012-05-24
申请号：PCT/IB2010/055192
申请日：2010-11-16
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) , BAI, Chunlong , MORRIS, Bradley John , LEHMAN, Brian
发明人： BAI, Chunlong , MORRIS, Bradley John , LEHMAN, Brian
IPC分类号： H03F1/32
CPC分类号： H03F1/3252 , H03F1/3247
摘要： Digital predistorter circuits with selectable basis function configurations are described. In some embodiments, an input scaling block is introduced prior to a basis function generator structure. The input scaling factor is based on the input signal's average power. In other embodiments, configurable connection coefficients are used to construct the orthogonal basis functions. Multiple sets of tap weights for the predistorter are maintained, each set corresponding to a given basis function configuration. In an example method for pre-distorting an input signal to compensate for distortion introduced by an electronic device, a statistic characterizing the input signal is calculated, and one of a pre-determined set of basis function configurations is selected, based on the statistic. A set of pre-distortion model weights corresponding to the selected basis function configuration are determined, after which the selected basis function configuration and the corresponding set of pre-distortion model weights are applied to the input signal.
摘要翻译：描述了具有可选基础功能配置的数字预失真器电路。在一些实施例中，在基函数发生器结构之前引入输入缩放块。输入比例因子基于输入信号的平均功率。在其他实施例中，可配置连接系数用于构建正交基函数。维护用于预失真器的多组抽头权重，每组对应于给定的基础功能配置。在用于对输入信号进行预失真以补偿由电子设备引入的失真的示例性方法中，计算表征输入信号的统计量，并且基于统计量来选择预定的一组基函数配置中的一个。确定与选择的基本功能配置相对应的一组预失真模型权重，之后将所选择的基本功能配置和相应的一组预失真模型权重应用于输入信号。

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