公开(公告)号：US09559821B2

公开(公告)日：2017-01-31

申请号：US14450480

申请日：2014-08-04

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sung-ryul Yun ,  Young-ho Oh

IPC: H04L5/00 ,  H04L27/32 ,  H04L27/26 ,  H04L25/02

CPC classification number: H04L27/262 ,  H04B2201/70706 ,  H04L5/0048 ,  H04L25/0224 ,  H04L27/2602 ,  H04L27/2618 ,  H04L27/263 ,  H04L27/32

Abstract: A transmitter includes: a frame generator configured to generate a frame including a frame starting symbol, at least one data symbol and a frame closing symbol; a pilot and reserved tone inserter configured to insert pilots and reserved tones in at least one of the frame starting symbol, the data symbol and the frame closing symbol such that positions of the reserved tones do not overlap positions of the pilots in the at least one of the frame starting symbol, the data symbol and the frame closing symbol; and a transmitter configured to transmit the frame in which the pilots and the reserved tones are inserted, wherein the reserved tones are not used to transmit data in the frame.

Abstract translation: 发射机包括：帧生成器，被配置为生成包括帧开始符号的帧，至少一个数据符号和帧闭合符号; 导频和保留音调插入器，被配置为在所述帧开始符号，所述数据符号和所述帧闭合符号中的至少一个中插入导频和保留音调，使得所保留的音调的位置不与所述至少一个中的所述导频的位置重叠 的帧起始符号，数据符号和帧闭合符号; 以及发射机，被配置为发送其中插入有导频和保留音调的帧，其中所保留的音调不用于在帧中发送数据。

公开(公告)号：US09509366B2

公开(公告)日：2016-11-29

申请号：US11696303

申请日：2007-04-04

Applicant: Chi-Yuan Peng ,  Chih-Chiu Wang

Inventor： Chi-Yuan Peng ,  Chih-Chiu Wang

IPC: H04B1/707 ,  H04B1/7097 ,  H04L1/00

CPC classification number: H04B1/7097 ,  H04B2201/70706 ,  H04L1/0048

Abstract: The present application provides an interference estimation circuit which includes a signal generator, a first symbol extractor and a first mixer. The signal generator generates an orthogonal signal orthogonal to partial symbols of a plurality of pilot signals. The first symbol extractor extracts partial symbols of a first decoded signal decoded from a received signal wherein the first decoded signal contains one of the plurality of pilot signals, and includes an input node for receiving the first decoded signal and an output node for outputting a first extracted signal. The first extracted signal is substantially orthogonal to the orthogonal signal. The first mixer is coupled to the signal generator for receiving the orthogonal signal and to the first symbol extractor for receiving the first extracted signal, and outputs a first mixed signal of the orthogonal signal and the first extracted signal for interference estimation.

Abstract translation: 本申请提供了一种干扰估计电路，其包括信号发生器，第一符号提取器和第一混频器。 信号发生器产生与多个导频信号的部分符号正交的正交信号。 第一符号提取器提取从接收信号解码的第一解码信号的部分符号，其中第一解码信号包含多个导频信号中的一个，并且包括用于接收第一解码信号的输入节点和用于输出第一解码信号的输出节点 提取信号。 第一提取信号基本上与正交信号正交。 第一混频器耦合到用于接收正交信号的信号发生器和用于接收第一提取信号的第一符号提取器，并输出正交信号和第一提取信号的第一混合信号用于干扰估计。

公开(公告)号：US20160226554A1

公开(公告)日：2016-08-04

申请号：US14610553

申请日：2015-01-30

Applicant: TrellisWare Technologies, Inc.

Inventor： Keith M. Chugg ,  Cenk Kose

IPC: H04B1/71 ,  H04B1/10

CPC classification number: H04B1/7101 ,  H04B1/1036 ,  H04B2001/1063 ,  H04B2201/70706

Abstract: A method for interference estimation and mitigation includes receiving a high-resolution digital signal. The high-resolution digital signal comprises a signal of interest and an interfering signal. An estimate of the interfering signal is generated using a quantizer. The signal of interest is in a quantization noise of the quantizer. An interference-mitigated signal of interest is generated based on a difference of the estimate of the interfering signal and the high-resolution digital signal.

Abstract translation: 一种用于干扰估计和减轻的方法包括接收高分辨率数字信号。 高分辨率数字信号包括感兴趣的信号和干扰信号。 使用量化器产生干扰信号的估计。 感兴趣的信号处于量化器的量化噪声中。 基于干扰信号和高分辨率数字信号的估计的差异来产生感兴趣的干扰减轻信号。

公开(公告)号：US09287906B2

公开(公告)日：2016-03-15

申请号：US14365868

申请日：2012-11-02

Applicant: Shingo Yamanouchi

Inventor： Shingo Yamanouchi

IPC: H04B1/04 ,  H04L25/03 ,  H04L27/26 ,  H04L25/02 ,  H04L27/34

CPC classification number: H04B1/0475 ,  H04B2001/0416 ,  H04B2201/70706 ,  H04L25/02 ,  H04L27/2614 ,  H04L27/2621 ,  H04L27/3411

Abstract: RF input signals having mutually different carrier frequencies are input from a signal generator to a power amplifier, the power amplifier amplifying the RF input signals and outputting them as RF output signals. The signal generator has a function for reducing the PAR of the waveform combining the RF input signals. The PAR reduction of the combined waveform of the RF input signals is performed through a control on the transmission timing of the RF input signals via a delay adjuster installed in the signal generator, or through an amplitude constraint on the RF input signals via a limiter installed in the signal generator. In this manner, a transmission device with improved power efficiency is provided.

Abstract translation: 具有相互不同的载波频率的RF输入信号从信号发生器输入到功率放大器，功率放大器放大RF输入信号并将其作为RF输出信号输出。 信号发生器具有减少组合RF输入信号的波形的PAR的功能。 通过经由安装在信号发生器中的延迟调节器对RF输入信号的发送定时进行控制，或通过安装了限幅器的RF输入信号的幅度约束来执行RF输入信号的组合波形的PAR减小 在信号发生器中。 以这种方式，提供了具有提高的功率效率的传输装置。

公开(公告)号：US20160056983A1

公开(公告)日：2016-02-25

申请号：US14465515

申请日：2014-08-21

Applicant: The Boeing Company

Inventor： Isaac M. Jeng

IPC: H04L27/20 ,  H04B1/04

CPC classification number: H04L27/20 ,  H03F1/3247 ,  H04B1/04 ,  H04B1/707 ,  H04B1/713 ,  H04B1/7143 ,  H04B2201/70706 ,  H04B2201/70715 ,  H04J13/10 ,  H04L1/0003 ,  H04L1/0071 ,  H04L27/368

Abstract: A method and apparatus for producing a transmission of constant envelope on a carrier signal. All possible combinations of all component codes for phases for producing the transmission are defined. Desired component code powers and desired intercode phases between all pairs of component codes are also defined. Still further, a portion of variables of a search process to reduce a number of variables searched by the search process is defined. Even further, deltas and weight variations for standard differences in a Jacobian matrix for use in the search process are defined. Penalty factors to evaluate an objective function of the search process are also defined. The search process is performed.

Abstract translation: 一种用于在载波信号上产生恒定包络的传输的方法和装置。 定义用于生成传输的相的所有组件代码的所有可能组合。 还定义了所有组件代码之间的所需组件代码功率和所需的代码间相位。 此外，定义了用于减少由搜索处理搜索的变量的数量的搜索处理的变量的一部分。 更进一步地，定义了用于搜索过程中用于雅可比矩阵中的标准差的三角洲和重量变化。 还定义了评估搜索过程目标函数的惩罚因素。 执行搜索过程。

公开(公告)号：US08995565B2

公开(公告)日：2015-03-31

申请号：US12300745

申请日：2007-05-17

Applicant: Masaki Ichihara

Inventor： Masaki Ichihara

IPC: H04L25/49 ,  H03G3/30 ,  H03G3/00 ,  H04B1/04

CPC classification number: H03G3/3047 ,  H03G3/004 ,  H03G3/3042 ,  H04B1/0475 ,  H04B2201/70706

Abstract: This invention includes a waveform analyzing means (13) for calculating an estimated value of a back-off value required by a power amplifier (2), which amplifies a high-frequency signal generated from a baseband signal (I, Q) to a predetermined transmission power, by analyzing the waveform of the baseband signal (I, Q), and a control means (14) for controlling at least one of the amplitude of high-frequency power input to the power amplifier (2) and the supply power of the power amplifier (2) on the basis of the estimated value. The invention calculates the estimated value of a back-off value by analyzing the waveform of a baseband in this manner, and hence need not generate a table in advance by calculating a back-off value for each combination of code channels. The invention can therefore be applied to even a case in which the number of code channels greatly increases, and can effectively prevent an increase in adjacent channel leakage power due to a signal obtained by multiplexing these code channels.

Abstract translation: 本发明包括一个波形分析装置（13），用于计算功率放大器（2）所需的退避值的估计值，该功率放大器将从基带信号（I，Q）产生的高频信号放大到预定的 发送功率，通过分析基带信号（I，Q）的波形，以及控制装置（14），用于控制向功率放大器（2）输入的高频功率的幅度和供给功率的至少一个 功率放大器（2）基于估计值。 本发明通过以这种方式分析基带的波形来计算退避值的估计值，因此不需要通过计算代码信道的每个组合的退避值来预先生成表。 因此，即使是代码信道数量大幅度增加的情况，也能够适用本发明，能够有效地防止由于通过复用这些代码信道而获得的信号而导致的相邻信道泄漏功率的增加。

公开(公告)号：US20150063427A1

公开(公告)日：2015-03-05

申请号：US14325159

申请日：2014-07-07

Applicant: THE AEROSPACE CORPORATION

Inventor： Charles Robert Cahn ,  Philip A. Dafesh

IPC: H04B1/707 ,  H04L27/12 ,  H04B1/04

CPC classification number: H04B1/7097 ,  G01S19/02 ,  H04B1/0475 ,  H04B1/707 ,  H04B1/7103 ,  H04B2001/0491 ,  H04B2201/70706 ,  H04B2201/709709 ,  H04J13/0003 ,  H04L23/02 ,  H04L27/12 ,  H04L27/2007

Abstract: An apparatus and method for generating a composite signal includes electronics configured to modulate a carrier utilizing a finite set of composite signal phases to generate a composite signal, the finite set of composite signal phases being determined through an optimization process that minimizes a constant envelope for the phase modulated carrier, subject to constraints on desired signal power levels of the signals to be combined and either zero or one or more relative phase relationships between the signals. The apparatus and method can be extended to generating an optimized composite signal of different frequencies.

Abstract translation: 一种用于产生复合信号的装置和方法包括被配置为利用有限组的复合信号相位来调制载波以产生复合信号的电子装置，通过优化过程来确定复合信号相位的有限集合，该最优化过程最小化用于 受到要组合的信号的期望信号功率电平的约束以及信号之间的零或一个或多个相对相位关系的相位调制载波。 该装置和方法可以扩展到生成不同频率的优化复合信号。

公开(公告)号：US08964716B2

公开(公告)日：2015-02-24

申请号：US12999895

申请日：2009-05-26

Applicant: Phil Jones ,  Carlo Luschi ,  Abdelkader Medles ,  Donal Price

Inventor： Phil Jones ,  Carlo Luschi ,  Abdelkader Medles ,  Donal Price

IPC: H04L12/26 ,  H04B7/216 ,  H04K1/02 ,  H04B7/00 ,  H04B1/707 ,  H03G3/30 ,  H04B1/04

CPC classification number: H04B1/707 ,  H03G3/3042 ,  H04B1/0483 ,  H04B2201/70706 ,  H04W52/367

Abstract: A method of transmitting an RF signal over a wireless communication network is provided. The method comprises determining a respective weighting factor for each of a plurality of digital signals each corresponding to a respective channel, the weighting factors weighting the digital signals to produce a composite signal intended for transmission as an RF signal via a power amplifier. The method further comprises executing instructions on a processor to dynamically calculate a metric related to the non-linearity of the power amplifier's transfer characteristics for the composite signal using the determined weighting factors. The method further comprises supplying to the power amplifier a signal for transmission as an RF signal and amplifying the signal for transmission at the power amplifier to transmit an RF signal over the wireless communication network via at least one antenna. The method further comprises controlling the transmission based on the metric related to the amplifier non-linearity.

Abstract translation: 提供了一种通过无线通信网络发射RF信号的方法。 该方法包括为每个对应于相应信道的多个数字信号中的每一个确定相应的加权因子，加权因子对数字信号进行加权，以产生旨在通过功率放大器作为RF信号传输的复合信号。 该方法还包括在处理器上执行指令以使用确定的加权因子动态地计算与复合信号的功率放大器的传输特性的非线性有关的度量。 该方法还包括向功率放大器提供用于传输的信号作为RF信号，并放大信号以在功率放大器处传输，以经由至少一个天线在无线通信网络上发送RF信号。 该方法还包括基于与放大器非线性相关的度量来控制传输。

公开(公告)号：US20140192924A1

公开(公告)日：2014-07-10

申请号：US14203227

申请日：2014-03-10

Applicant: AT&T Intellectual Property II, L.P.

Inventor： LEONARD JOSEPH CIMINI, JR. ,  Nelson Ray Sollenberger

IPC: H04B1/04

CPC classification number: H04L27/2623 ,  H04B1/0475 ,  H04B7/2628 ,  H04B2201/70706 ,  H04L27/2614 ,  H04L27/2621

Abstract: The present invention provides a method and system for reducing the peak to average power ratio (PAP) of a signal with low computational complexity. According to one embodiment, the present invention is applied to reduce the PAP of an OFDM signal. According to an alternative embodiment, the present invention, is applied to reduce the PAP of a CDMA signal. Rather than seeking the optimum solution, which involves significant computational complexity, the present invention provides for a number of sub-optimal techniques for reducing the PAP of an OFDM signal but with much lower computational complexity.

Abstract translation: 本发明提供一种降低计算复杂度低的信号的峰均功率比（PAP）的方法和系统。 根据一个实施例，本发明应用于减少OFDM信号的PAP。 根据替代实施例，本发明被应用于减少CDMA信号的PAP。 本发明不是寻求涉及大量计算复杂度的最佳解决方案，而是提供了许多用于减少OFDM信号的PAP但具有低得多的计算复杂度的次优技术。

公开(公告)号：US08744002B2

公开(公告)日：2014-06-03

申请号：US13575009

申请日：2010-11-15

Applicant: Takashi Maehata ,  Mikhail Illarionov

Inventor： Takashi Maehata ,  Mikhail Illarionov

IPC: H04K1/02 ,  H04L25/03 ,  H04L25/49

CPC classification number: H04L27/2624 ,  H04B2201/70706

Abstract: A peak power suppressing circuit can suppress a peak power of an IQ (In-phase and Quadrature-phase) baseband signal more assuredly. In particular, the peak power suppressing circuit performs a clipping process on an IQ baseband signal. The suppressing circuit includes a power calculation section that calculates an instantaneous power P of an IQ baseband signal, a pulse retention section that retains a cancellation pulse S that has a frequency component in a frequency band B of the IQ baseband signal and a frequency component outside the frequency band, and a clipping processing section that subtracts, from an IQ baseband signal whose instantaneous power P that has been calculated is greater than a predetermined threshold Pth, cancellation signals Ic and Qc obtained by multiplying increments ΔI and ΔQ of the IQ baseband signal from the threshold Pth by the cancellation pulse S.

Abstract translation: 峰值功率抑制电路可以更可靠地抑制IQ（同相和正交）基带信号的峰值功率。 特别地，峰值功率抑制电路对IQ基带信号进行限幅处理。 抑制电路包括：功率计算部，其计算IQ基带信号的瞬时功率P;脉冲保持部，其保持具有在IQ基带信号的频带B中的频率成分的频率成分的消除脉冲S和外部的频率分量 频带和削波处理部，其从已经计算出的瞬时功率P的IQ基带信号中减去大于预定阈值Pth的消除信号Ic和Qc，通过乘以＆Dgr; I和＆Dgr; Q 来自阈值Pth的IQ基带信号除以消除脉冲S.