专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

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

WO2012066370A1 METHOD AND FREQUENCY AGILE PRE-DISTORTED TRANSMITTER USING PROGRAMMABLE DIGITAL UP AND DOWN CONVERSION 审中-公开
标题翻译：使用可编程数字向上和向下转换的方法和频率AGILE预失真发射机
公开(公告)号：WO2012066370A1
公开(公告)日：2012-05-24
申请号：PCT/IB2010/002941
申请日：2010-11-18
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , MORRIS, Bradley, John , THOREBÄCK, Lars, Johan
发明人： MORRIS, Bradley, John , THOREBÄCK, Lars, Johan
IPC分类号： H04L27/36 , H03F1/32
CPC分类号： H04B1/0475 , H03F1/3247 , H03F1/3294 , H04B2001/0433 , H04L25/08 , H04L27/368 , Y10T29/4913
摘要： Pre-distorted transmitters operable over a wide range of frequencies including a plurality of predetermined frequency bands are provided. The transmitters include a programmable digital up-converter and a programmable digital down-converter, an ADC, a DAC, a power amplifier and at least one analog filter arranged along a transmit signal path and a feedback signal path.
摘要翻译：提供了在包括多个预定频带的宽频率范围内可操作的预失真发射机。发射器包括可编程数字上变频器和可编程数字下变频器，ADC，DAC，功率放大器和沿着发射信号路径和反馈信号路径布置的至少一个模拟滤波器。

3. 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。

4. 发明申请

WO2015015476A3 LEVEL DE-MULTEPLEXED DELTA SIGMA MODULATOR BASED TRANSMITTER 审中-公开
标题翻译：基于水平的多路复用的基于三角形信号调制器的发射机
公开(公告)号：WO2015015476A3
公开(公告)日：2015-07-02
申请号：PCT/IB2014063685
申请日：2014-08-04
申请人： ERICSSON TELEFON AB L M , 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
IPC分类号： H03M7/36 , H03M3/04
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水平解复用DSM的发射机及其提供方法。本说明书的广义实施例使得能够基于多级解复用DSM的无线发射机。作为示例公开了基于三电平解复用DSM的发射机。更通常地，还教导了使用m级解复用DSM，因此说明书可以为本领域技术人员提供更广泛的应用。考虑到本说明书及其公开的实施例的教导，可以根据本领域技术人员的特定应用的要求来增强发射机的效率和线性度中的至少一个。

5. 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。

6. 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。

7. 发明申请

WO2009043172A1 METHOD AND SYSTEM FOR ADAPTIVE PEAK TO AVERAGE POWER RATIO REDUCTION IN OFDM COMMUNICATION NETWORKS 审中-公开
标题翻译：在OFDM通信网络中平均降低功率比的方法和系统
公开(公告)号：WO2009043172A1
公开(公告)日：2009-04-09
申请号：PCT/CA2008/001757
申请日：2008-10-03
申请人： NORTEL NETWORKS LIMITED , GUO, Ning , MCGOWAN, Neil , MORRIS, Bradley, John
发明人： GUO, Ning , MCGOWAN, Neil , MORRIS, Bradley, John
IPC分类号： H04L29/02 , H04J11/00 , H04L27/10 , H04L27/26 , H04W72/04
CPC分类号： H04L27/2623 , H04L27/2624
摘要： A method and system adaptively reduce a peak-to-average power ratio in a communication system. Energy is clipped from at least one peak of a modulated signal. The modulated signal includes a plurality of sub-carriers. At least one data sub-carrier is adaptively selected for peak-to-average power ratio reduction use based on known scheduling information. The clipped energy is distributed among at least one data sub-carrier.
摘要翻译：一种方法和系统自适应地降低通信系统中的峰均功率比。能量被从调制信号的至少一个峰限制。调制信号包括多个子载波。基于已知的调度信息，至少一个数据子载波被自适应地选择用于峰值到平均功率比减少使用。剪切的能量分布在至少一个数据子载波中。

8. 发明申请

WO2007071013A1 COMPACT FLOATING POINT DELTA ENCODING FOR COMPLEX DATA 审中-公开
标题翻译：用于复杂数据的紧凑浮点点编码
公开(公告)号：WO2007071013A1
公开(公告)日：2007-06-28
申请号：PCT/CA2006/001450
申请日：2006-09-01
申请人： NORTEL NETWORKS LIMITED , MCGOWAN, Neil , MORRIS, Bradley, John , MAH, Edward, Ken, Kiu
发明人： MCGOWAN, Neil , MORRIS, Bradley, John , MAH, Edward, Ken, Kiu
IPC分类号： H03M7/30 , H04B1/66 , H04L1/00 , H04L27/00
CPC分类号： H04L1/0009 , H03M7/30 , H04L1/0028 , H04W88/08
摘要： A method and apparatus for compression of complex data signals within a telecommunications base station. The method includes representing a sample of a complex value discrete time signal using 2( L - N )- S mantissa bits and 2 N+S exponent bits to realize peak output signal to noise ratios over a wider dynamic range compared to a conventional L -bit uniform quantization format. The increases in dynamic range and peak output SNR is achieved without increasing the average number of data bits per sample and with relatively simple computational effort.
摘要翻译：一种用于压缩电信基站内复杂数据信号的方法和装置。该方法包括使用2（L-N）-S尾数位和2N + S指数位来表示复值离散时间信号的采样，以在较宽的动态范围内实现峰值输出信噪比，与传统的L位均匀量化格式。实现动态范围和峰值输出SNR的增加，而不增加每个样本的平均数据位数，并以相对简单的计算量。

9. 发明申请

WO2013046183A1 SYSTEMS AND METHODS FOR DIGITAL PREDISTORTION IN A DUAL BAND TRANSMITTER 审中-公开
标题翻译：双波段发射机数字预测系统与方法
公开(公告)号：WO2013046183A1
公开(公告)日：2013-04-04
申请号：PCT/IB2012/055213
申请日：2012-09-28
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , BAI, Chunlong , MORRIS, Bradley, John
发明人： BAI, Chunlong , MORRIS, Bradley, John
IPC分类号： H03F1/32 , H04B1/04 , H04B1/00
CPC分类号： H03F1/3247 , H04B1/0075 , H04B1/0475 , H04B1/0483
摘要： Systems and methods for providing digital predistortion to compensate for a non-linearity of a power amplifier in a dual-band transmitter are disclosed. In one embodiment, a first baseband signal is tuned to a first intermediate frequency to provide a first intermediate frequency signal. Likewise, a second baseband signal is tuned to a second intermediate frequency to provide a second intermediate frequency signal. The first and second intermediate frequency signals are combined to provide a combined intermediate frequency signal. The combined intermediate frequency signal is then predistorted to compensate for the non-linearity of the power amplifier in the transmitter to thereby provide a predistorted signal. In one embodiment, a separation between the first and second intermediate frequencies and/or a sampling rate for predistortion is minimized based on a target intermodulation order for the predistortion.
摘要翻译：公开了用于提供数字预失真来补偿双频带发射机中的功率放大器的非线性的系统和方法。在一个实施例中，将第一基带信号调谐到第一中间频率以提供第一中频信号。类似地，第二基带信号被调谐到第二中频以提供第二中频信号。第一和第二中频信号被组合以提供组合的中频信号。然后组合的中频信号被预失真以补偿发射机中的功率放大器的非线性，从而提供预失真的信号。在一个实施例中，基于用于预失真的目标互调顺序，使第一和第二中频之间的间隔和/或预失真的采样率最小化。

10. 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。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式