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    METHOD AND APPARATUS FOR INTER-CARRIER INTERFERENCE MITIGATION IN PHASE NOISE LIMITED WIRELSS COMMUNICTION SYSTEMS
    2.
    发明申请
    METHOD AND APPARATUS FOR INTER-CARRIER INTERFERENCE MITIGATION IN PHASE NOISE LIMITED WIRELSS COMMUNICTION SYSTEMS 有权
    相位噪声有限公司网络通信系统中运营商干扰减轻的方法与装置

    公开(公告)号：US20150155961A1

    公开(公告)日：2015-06-04

    申请号：US13994576

    申请日：2012-09-26

    申请人： Alexey Khoryaev ,  Artyom Lomayev ,  Alexander Maltsev ,  Vladimir Kravtsov ,  Michael Genossar

    发明人： Alexey Khoryaev ,  Artyom Lomayev ,  Alexander Maltsev ,  Vladimir Kravtsov ,  Michael Genossar

    IPC分类号： H04J11/00 ,  H04L1/00 ,  H04L27/26

    CPC分类号： H04J11/0023 ,  H04L1/0057 ,  H04L1/0071 ,  H04L27/2602 ,  H04L27/2634

    摘要： In a wireless, OFDM system, phase noise may be mitigated through the use of an interleaver that is designed to distribute coded block bits across subcarriers of multiple OFDM symbols. Doing so decreases the non-stationary properties of the noise. Such an interleaver may be a rectangular interleaver that maps each block to a different subcarrier to create frequency diversity and to a different OFDM symbol, to create time diversity. One exemplary method of interleaving the symbols is to place a first symbol at row X and column Y of the interleaver. The next symbol is placed in row X+1 and column Y+1. The result of such an interleaving process is a great reduction in the block error rate.

    摘要翻译： 在无线OFDM系统中，可以通过使用被设计为在多个OFDM符号的子载波上分配编码块比特的交织器来减轻相位噪声。 这样做会降低噪声的非平稳特性。 这样的交织器可以是矩形交织器，其将每个块映射到不同的子载波以产生频率分集和不同的OFDM符号，以产生时间分集。 交织符号的一个示例性方法是在交织器的行X和列Y处放置第一符号。 下一个符号放在行X + 1和列Y + 1。 这种交错处理的结果是块错误率的大大降低。

    Method for peak to average power ratio reduction
    3.
    发明授权
    Method for peak to average power ratio reduction 有权
    峰值与平均功率比降低的方法

    公开(公告)号：US08897351B2

    公开(公告)日：2014-11-25

    申请号：US12888764

    申请日：2010-09-23

    申请人： Vladimir Kravtsov

    发明人： Vladimir Kravtsov

    IPC分类号： H03H7/30 ,  H03D1/04 ,  H04L25/03 ,  H04L27/26

    CPC分类号： H04L27/2623 ,  H04L25/03834

    摘要： According to various embodiments, methods, apparatuses and systems are provided to allow a transmitter to reduce the Peak to Average Power Ratio (PAPR) of a modulated signal by applying a pre-emphasis filter to the signal, clipping the pre-distorted signal to reduce the PAPR, and applying a de-emphasis filter to the clipped signal to reduce the spectral leakage caused by the clipping. Other embodiments may be disclosed or claimed.

    摘要翻译： 根据各种实施例，提供方法，装置和系统以允许发射机通过对信号施加预加重滤波器来减小调制信号的峰均功率比（PAPR），限幅预失真信号以减少 PAPR，并且对削波信号应用去加重滤波器以减少由限幅引起的频谱泄漏。 可以公开或要求保护其他实施例。

    NOISE ESTIMATION FILTER
    5.
    发明申请
    NOISE ESTIMATION FILTER 失效
    噪声估计滤波器

    公开(公告)号：US20130003802A1

    公开(公告)日：2013-01-03

    申请号：US13174327

    申请日：2011-06-30

    申请人： Ayelet Doron ,  Vladimir Kravtsov ,  Yuval Lomnitz

    发明人： Ayelet Doron ,  Vladimir Kravtsov ,  Yuval Lomnitz

    IPC分类号： H04L27/28 ,  H04B17/00

    CPC分类号： H04B17/345 ,  H04L25/0242 ,  H04L25/0248

    摘要： A noise estimation filter for an orthogonal frequency-division multiplexed (OFDM) system can include a filter bank module, a coefficient squaring module, and a summing module. The filter bank module can multiply a unitary vector by an OFDM signal vector to generate scalar products of the OFDM signal vector. The coefficient squaring module can square the scalar products and weight the scalar products to generate a plurality of weighted single estimates. The coefficient squaring module can include a squaring module for squaring the scalar product to generate a plurality of single estimates and a coefficient multiplication module for weighting each of the single estimates with a noise coefficient forming a plurality of weighted single estimates. The summing module can sum the weighted single estimates to generate a noise and interference power estimate.

    摘要翻译： 用于正交频分复用（OFDM）系统的噪声估计滤波器可以包括滤波器组模块，系数平方模块和求和模块。 滤波器组模块可以通过OFDM信号向量乘以单一矢量，以产生OFDM信号矢量的标量积。 系数平方模块可以对标量积进行平方并加权标量积以产生多个加权单个估计。 系数平方模块可以包括用于平方标量积以产生多个单个估计的平方模块和用于对形成多个加权单个估计值的噪声系数对每个单个估计进行加权的系数乘法模块。 求和模块可以对加权的单个估计进行求和以产生噪声和干扰功率估计。

    Adaptive frequency reuse method of radio resources management and allocation
    6.
    发明授权
    Adaptive frequency reuse method of radio resources management and allocation 有权
    无线电资源管理与分配的自适应频率复用方法

    公开(公告)号：US08068459B2

    公开(公告)日：2011-11-29

    申请号：US12415957

    申请日：2009-03-31

    申请人： Vladimir Kravtsov ,  Yuval Lomnitz ,  Clark Chen ,  Shilpa Talwar ,  Nageen Himayat ,  Li Li ,  Hua Yang ,  Homgmei Sun

    发明人： Vladimir Kravtsov ,  Yuval Lomnitz ,  Clark Chen ,  Shilpa Talwar ,  Nageen Himayat ,  Li Li ,  Hua Yang ,  Homgmei Sun

    IPC分类号： H04L5/22 ,  H04J3/00 ,  H04W72/00

    CPC分类号： H04W72/06 ,  H04W28/08 ,  H04W72/082

    摘要： A method for managing and allocating radio resources (RRMA method) of multiple radio resource types to subscriber stations is disclosed. The RRMA method includes bandwidth partitioning, into parts comprising “slots” with a given reuse pattern, a selection rule, to select a “cell, reuse pattern” pair serving each user, and an allocation rule, for distributing to each user an appropriate number of bandwidth slots from the selected “cell, reuse pattern” pair. After an adaptation period, the method reaches a desired fairness, while simultaneously reaching a maximal mean throughput, possible under this fairness. For big networks, the method provides basically decentralized radio resource management. The RRMA method is useful to cellular networks having a single set of orthogonal sub-channels (frequency/time slots) being reused by all network cells, such as time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), or OFDMA/TDMA cellular systems. Particularly, the method is applicable in fractional frequency reuse cellular networks.

    摘要翻译： 公开了一种用于向用户站管理和分配多种无线电资源类型的无线电资源（RRMA方法）的方法。 RRMA方法包括带宽划分，包括具有给定重复使用模式的“时隙”的部分，选择规则，以选择为每个用户提供服务的“小区，重用模式”对以及分配规则，用于向每个用户分配适当的号码 来自所选择的“小区，重用模式”对的带宽时隙。 在适应期后，该方法达到期望的公平性，同时达到最大平均吞吐量，这在公平性下是可能的。 对于大型网络，该方法基本上提供了分散的无线资源管理。 RRMA方法对于具有由所有网络小区重新使用的单组正交子信道（频率/时隙）的蜂窝网络是有用的，诸如时分多址（TDMA），正交频分多址（OFDMA）或 OFDMA / TDMA蜂窝系统。 特别地，该方法适用于分数频率复用蜂窝网络。

    Device, system and method of noise identification and cancellation
    7.
    发明授权
    Device, system and method of noise identification and cancellation 失效
    噪声识别和取消的装置，系统和方法

    公开(公告)号：US07657228B2

    公开(公告)日：2010-02-02

    申请号：US11442384

    申请日：2006-05-30

    申请人： Amir Rubin ,  Vladimir Kravtsov

    发明人： Amir Rubin ,  Vladimir Kravtsov

    IPC分类号： H04B1/00 ,  H04B15/00

    CPC分类号： H04B1/123 ,  H04B17/345

    摘要： Some embodiments of the invention provide devices, systems and methods of noise identification and cancellation. For example, an apparatus in accordance with an embodiment of the invention includes: a characterizer to estimate a non-linear mutual relation between: a characteristic of an incoming interference signal, and an estimated portion of noise level in an incoming signal-of-interest caused by the incoming interference signal; and a noise canceller to reduce an effect of the interference signal on the signal-of-interest by applying a noise reduction algorithm based on said non-linear mutual relation.

    摘要翻译： 本发明的一些实施例提供噪声识别和消除的装置，系统和方法。 例如，根据本发明的实施例的装置包括：用于估计进入的干扰信号的特性和输入的感兴趣的信号中噪声水平的估计部分之间的非线性相互关系的表征器 由入射干扰信号引起; 以及噪声消除器，通过应用基于所述非线性相互关系的降噪算法来减小干扰信号对感兴趣信号的影响。

    SYSTEM AND METHOD OF IMPROVING POWER EFFICIENCY IN WIRELESS COMMUNICATION SYSTEM
    10.
    发明申请
    SYSTEM AND METHOD OF IMPROVING POWER EFFICIENCY IN WIRELESS COMMUNICATION SYSTEM 有权
    在无线通信系统中提高功率效率的系统和方法

    公开(公告)号：US20130003627A1

    公开(公告)日：2013-01-03

    申请号：US13172944

    申请日：2011-06-30

    申请人： Vladimir Kravtsov

    发明人： Vladimir Kravtsov

    IPC分类号： H04W52/02

    CPC分类号： H04W52/0209 ,  H04L25/03057 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/146 ,  Y02D70/168

    摘要： An apparatus may comprise a signal mapper to map a pre-emphasized signal to sub-carriers symmetrically about DC, and a peak-to-average-power reduction (PAPR) module arranged to receive a pre-emphasized signal and treat the pre-emphasized signal so as to reduce PAPR in a transmit signal sent from the transmitter. Other embodiments are described and claimed.

    摘要翻译： 一种装置可以包括信号映射器，用于将关于DC对称地将预先加重的信号映射到子载波;以及峰均平均功率降低（PAPR）模块，布置成接收预加重信号并且将预先强调的信号 信号，以便减少从发射机发送的发射信号中的PAPR。 描述和要求保护其他实施例。