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11. 发明申请

US20170155479A1 METHODS AND APPARATUSES FOR TRANSMITTING AND RECEIVING REFERENCE SIGNALS 审中-公开
公开(公告)号：US20170155479A1
公开(公告)日：2017-06-01
申请号：US15361910
申请日：2016-11-28
申请人： Samsung Electronics Co., Ltd.
发明人： Pengfei SUN , Bin YU , Chen QIAN
IPC分类号： H04L5/00 , H04W72/04
CPC分类号： H04L5/005 , H04B7/0417 , H04B7/0691 , H04L5/0023 , H04L25/0232 , H04W72/042 , H04W72/0446 , H04W72/0453
摘要： The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method for transmitting reference signals is provided. In the method, a transmitting apparatus inserts at least one physical resource block for reducing reference signal overheads between adjacent first physical resource blocks, and then transmits first physical resource blocks and the at least one physical resource block for reducing the reference signal overheads.

12. 发明授权

US09667448B2 Method and apparatus for channel estimation in wireless communication system 有权
公开(公告)号：US09667448B2
公开(公告)日：2017-05-30
申请号：US14702529
申请日：2015-05-01
申请人： Samsung Electronics Co., Ltd
发明人： Ha-Young Yang , Ik-Beom Lee , Joo-Hyun Lee
IPC分类号： H04W24/00 , H04L25/02 , H04W24/08 , H04L12/26
CPC分类号： H04L25/0204 , H04L25/0232 , H04L43/062 , H04W24/08
摘要： The present disclosure is related to a method and apparatus for channel estimation in a wireless communication system. The method and apparatus for channel estimation are used to determine a number of sub-carriers or symbols to be used to estimate N channels for N user equipment (UE)s on a basis of resource allocation information on N reference signals associated with the N UEs, estimate channel values for the N channels by receiving the N reference signals through the sub-carriers or the symbols according to the determined number, and correlate the estimated channel values to use the correlated channel values to estimate each of the N channels.

13. 发明申请

US20170126347A1 Methods and Systems for OFDM Using Code Division Multiplexing 审中-公开
公开(公告)号：US20170126347A1
公开(公告)日：2017-05-04
申请号：US15399028
申请日：2017-01-05
申请人： Apple Inc.
发明人： Jianglei Ma , Ming Jia , Wen Tong , Peiying Zhu , Hua Xu , Hang Zhang , Mo-Han Fong
IPC分类号： H04J13/00 , H04L5/00 , H04B1/707
CPC分类号： H04J13/0003 , H04B1/707 , H04B7/0404 , H04B7/0678 , H04J13/00 , H04J13/16 , H04L5/0016 , H04L5/0026 , H04L5/0048 , H04L5/005 , H04L25/0204 , H04L25/0226 , H04L25/0232 , H04L25/03866 , H04L27/2613 , H04L27/2627 , H04W72/044
摘要： In some embodiments of the invention, OFDM symbols are transmitted as a plurality of clusters. A cluster includes a plurality of OFDM sub-carriers in frequency, over a plurality of OFDM symbol durations in time. Each cluster includes data as well as pilot information as a reference signal for channel estimation. In some embodiments, a plurality of clusters collectively occupy the available sub-carrier set in the frequency domain that is used for transmission. In some embodiments of the invention data and/or pilots are spread within each cluster using code division multiplexing (CDM). In some embodiments pilots and data are separated by distributing data on a particular number of the plurality of OFDM symbol durations and pilots on a remainder of the OFDM symbol durations. CDM spreading can be performed in time and/or frequency directions.

14. 发明授权

US09629167B2 Method of resource block (RB) bundling 有权
公开(公告)号：US09629167B2
公开(公告)日：2017-04-18
申请号：US14962780
申请日：2015-12-08
申请人： LG ELECTRONICS INC.
发明人： Dongwook Roh , Daewon Lee , Bonghoe Kim , Yujin Noh , Byeongwoo Kang
IPC分类号： H04W72/04 , H04L1/00 , H04B7/06 , H04L1/18 , H04L5/00 , H04L25/02 , H04L27/26 , H04W24/00 , H04W24/02 , H04W48/16 , H04W72/00
CPC分类号： H04W72/0493 , H04B7/0626 , H04B7/0634 , H04L1/0003 , H04L1/0009 , H04L1/0025 , H04L1/0026 , H04L1/0027 , H04L1/0059 , H04L1/1819 , H04L5/0007 , H04L5/0044 , H04L5/0048 , H04L5/005 , H04L5/0051 , H04L25/0232 , H04L27/2636 , H04L27/2649 , H04W24/00 , H04W24/02 , H04W48/16 , H04W72/00 , H04W72/04 , H04W72/044 , H04W72/0486
摘要： A method of sizing bundled resource blocks (RBs) having at least one user equipment (UE)-specific demodulation reference signal in an orthogonal frequency division multiplexing (OFDM) system is disclosed. According to one embodiment, the method includes: receiving configuration information related to at least one UE-specific demodulation reference signal; receiving a plurality of resource blocks (RBs) from a network, wherein the plurality of resource blocks comprises the at least one UE-specific demodulation reference signal, at least one cell-specific demodulation reference signal or data, wherein a number of the plurality of RBs is dependent on a size of a system bandwidth, the size of the system bandwidth corresponding to one of four size ranges; and processing at least one of the received plurality of RBs by bundling the plurality of RBs into RB bundles, wherein the size of each RB bundle is based on the one of the four size ranges.

15. 发明授权

US09544114B2 Method and apparatus for channel estimation and equalization 有权
标题翻译：用于信道估计和均衡的方法和装置
公开(公告)号：US09544114B2
公开(公告)日：2017-01-10
申请号：US15041304
申请日：2016-02-11
申请人： Instituto de Pesquisas Eldorado
发明人： Eduardo Rodrigues de Lima
IPC分类号： H04L27/00 , H04L5/00 , H04L27/26
CPC分类号： H04L5/0048 , H04L5/0007 , H04L25/022 , H04L25/0232 , H04L25/03159 , H04L27/2601 , H04L27/2613 , H04L27/2647
摘要： An inverse channel estimation method includes receiving a modulated signal with a pilot. A local reference pilot, matching the received pilot as it was prior to transmission, is divided by a scaled version of the received pilot's power. The division result is scaled again and multiplied with a conjugate value of the received pilot signal, to obtain the inverse channel estimate. Scaling may be performed using bit shifting. The division is performed using a CORDIC algorithm. If multiple pilots are received, interpolation can be performed to provide channel estimates for time and/or frequencies in between. Interpolation can be based on the Farrow method. The received signal may be equalized by multiplying it with the inverse channel estimate.
摘要翻译：反向信道估计方法包括用导频接收调制信号。将接收到的飞行员与传输之前相匹配的本地参考飞行员除以接收飞行员的功率的缩放版本。分割结果再次缩放并乘以接收导频信号的共轭值，以获得反向信道估计。可以使用位移动执行缩放。使用CORDIC算法进行分割。如果接收到多个导频，则可以执行插值以提供其间的时间和/或频率的信道估计。插值可以基于Farrow方法。所接收的信号可以通过将其与反向信道估计相乘来进行均衡。

16. 发明申请

US20160359652A1 Pilot Symbol Patterns for Transmission via a Plurality of Antennas 审中-公开
标题翻译：通过多个天线传输的先导符号模式
公开(公告)号：US20160359652A1
公开(公告)日：2016-12-08
申请号：US15226101
申请日：2016-08-02
申请人： Apple Inc.
发明人： Jianglei Ma , Ming Jia , Wen Tong , Peiying Zhu , Hang Zhang , Hua Xu , Dong-Sheng Yu
IPC分类号： H04L27/26 , H04L25/02 , H04L5/00 , H04B7/06 , H04B7/08
CPC分类号： H04L27/2611 , H04B7/06 , H04B7/08 , H04L5/0007 , H04L5/0023 , H04L25/0226 , H04L25/0232 , H04L27/2626 , H04L27/2647
摘要： A method and apparatus for improving channel estimation within an OFDM communication system. Channel estimation in OFDM is usually performed with the aid of pilot symbols. The pilot symbols are typically spaced in time and frequency. The set of frequencies and times at which pilot symbols are inserted is referred to as a pilot pattern. In some cases, the pilot pattern is a diagonal-shaped lattice, either regular or irregular. The method first interpolates in the direction of larger coherence (time or frequency). Using these measurements, the density of pilot symbols in the direction of faster change will be increased thereby improving channel estimation without increasing overhead. As such, the results of the first interpolating step can then be used to assist the interpolation in the dimension of smaller coherence (time or frequency).
摘要翻译：一种用于改善OFDM通信系统内的信道估计的方法和装置。 OFDM中的信道估计通常借助于导频符号来执行。导频符号通常在时间和频率上间隔开。将导频符号插入的频率和时间的集合称为导频模式。在一些情况下，导频图案是对角线形格子，规则的或不规则的。该方法首先在较大相干性（时间或频率）的方向内插。使用这些测量，导频符号在更快变化方向上的密度将增加，从而改善信道估计而不增加开销。因此，第一内插步骤的结果然后可以用于辅助尺寸较小的相干性（时间或频率）的内插。

17. 发明申请

US20160226687A1 Apparatus and Method for Sending and Receiving Broadcast Signals 有权
标题翻译：发送和接收广播信号的装置和方法
公开(公告)号：US20160226687A1
公开(公告)日：2016-08-04
申请号：US15014838
申请日：2016-02-03
申请人： LG ELECTRONICS INC.
发明人： Jaehyung KIM , Woosuk KO , Chulkyu MUN , Sungryong HONG
IPC分类号： H04L27/26
CPC分类号： H04L27/2601 , H04L1/0041 , H04L1/0042 , H04L1/0071 , H04L1/0075 , H04L25/0232 , H04L27/2611 , H04L27/2613 , H04L27/265 , H04L27/2656 , H04L27/2662 , H04L27/2666 , H04L2001/0093
摘要： A broadcast signal receiver is disclosed. A broadcast signal receiver according to an embodiment of the present invention comprises a synchronization & demodulation module performing signal detection and OFDM demodulation on a received broadcast signal; a frame parsing & deinterleaving module performing parsing and deinterleaving of a signal frame of the broadcast signal; a demapping & decoding module performing conversion of data of at least onePhysical Layer Pipe (PLP) of the broadcast signal into the bit domain and FEC decoding of the converted PLP data; and an output processing module outputting a data stream by receiving the at least one PLP data.
摘要翻译：公开了广播信号接收机。根据本发明的实施例的广播信号接收机包括对所接收的广播信号执行信号检测和OFDM解调的同步解调模块; 帧解析和解交织模块，执行广播信号的信号帧的解析和解交织; 解映射模块，其将所述广播信号的至少一个物理层管道（PLP）的数据转换为所述位域并对所转换的PLP数据进行FEC解码; 以及输出处理模块，通过接收所述至少一个PLP数据来输出数据流。

18. 发明授权

US09401787B2 Method and apparatus for providing an efficient pilot pattern 有权
标题翻译：提供有效导频模式的方法和装置
公开(公告)号：US09401787B2
公开(公告)日：2016-07-26
申请号：US12263497
申请日：2008-11-02
申请人： Xin Qi , Jianfeng Kang , Chao Wei
发明人： Xin Qi , Jianfeng Kang , Chao Wei
IPC分类号： H04L27/00 , H04L25/08 , H04L5/00 , H04L25/02
CPC分类号： H04L5/0048 , H04L5/0007 , H04L5/0023 , H04L5/0064 , H04L25/0226 , H04L25/0232
摘要： An approach is provided for generating a pilot pattern. A sequence of tiles is generated, wherein the tiles are arranged to avoid redundant pilot sub-carriers by utilizing different pilot patterns. A transmission signal is generated according to the generated sequence for transmission over a network.
摘要翻译：提供了一种用于产生导频模式的方法。生成瓦片序列，其中瓦片被布置成通过利用不同的导频模式来避免冗余的导频子载波。根据生成的序列生成发送信号，以便通过网络传输。

19. 发明授权

US09369328B2 System and method for providing channel equalization in orthogonal frequency division multiplexing (OFDM) wireless systems 有权
标题翻译：在正交频分复用（OFDM）无线系统中提供信道均衡的系统和方法
公开(公告)号：US09369328B2
公开(公告)日：2016-06-14
申请号：US14643278
申请日：2015-03-10
申请人： New York University
发明人： Aditya Dhananjay , Jinyang Li , Sundeep Rangan
IPC分类号： H04L27/26 , H04L25/02 , H04L5/00
CPC分类号： H04L27/2649 , H04L5/0048 , H04L25/0202 , H04L25/0204 , H04L25/022 , H04L25/023 , H04L25/0232 , H04L25/0234 , H04L27/2647
摘要： The present disclosure relates to a computer-implemented method for estimating a communication channel response, comprising procedures such as: receiving, via the channel, a signal comprising a plurality of symbols, each comprising a plurality of sub-carriers; determining a pilot sub-carrier response and a pilot sub-carrier metric for one or more pilot sub-carriers; and for one or more non-pilot sub-carriers: i) determining a non-pilot sub-carrier metric; ii) if the non-pilot sub-carrier metric satisfies a criterion, determining a particular component (e.g., real or imaginary) of a non-pilot sub-carrier response as a function of different components of one or more pilot sub-carrier responses; and iii) if the non-pilot sub-carrier metric does not satisfy the criterion, determine the particular component of the non-pilot sub-carrier response as a function of the particular component of one or more pilot sub-carrier responses. Other embodiments include a communication apparatus and a computer-readable medium configurable to perform such procedures.
摘要翻译：本公开涉及一种用于估计通信信道响应的计算机实现的方法，包括以下过程：经由信道经由信道接收包括多个符号的信号，每个符号包括多个子载波; 确定一个或多个导频子载波的导频子载波响应和导频子载波量度; 并且对于一个或多个非导频子载波：i）确定非导频子载波量度; ii）如果非导频子载波量度满足标准，则确定作为一个或多个导频子载波响应的不同分量的函数的非导频子载波响应的特定分量（例如，实部或虚部） ; 以及iii）如果所述非导频子载波量度不满足所述准则，则确定所述非导频子载波响应的特定分量作为一个或多个导频子载波响应的特定分量的函数。其他实施例包括可配置为执行这种过程的通信装置和计算机可读介质。

20. 发明授权

US09288094B2 Adaptive channel prediction and mitigating interference in OFDM systems 有权
标题翻译：自适应信道预测和减轻OFDM系统中的干扰
公开(公告)号：US09288094B2
公开(公告)日：2016-03-15
申请号：US14133123
申请日：2013-12-18
申请人： Intel Corporation
发明人： Bernard Arambepola , Parveen K. Shukla , Thushara Hewavithana
IPC分类号： H04L27/26 , H04L25/03
CPC分类号： H04L27/2646 , H04L5/0007 , H04L25/0218 , H04L25/022 , H04L25/0232 , H04L25/03343 , H04L27/2607 , H04L27/2613 , H04L27/2647 , H04L27/2665 , H04L27/2678
摘要： One embodiment provides an apparatus. The apparatus includes an optimization module configured to determine a guard interval remainder based, at least in part on a comparison of an allowable microreflection interference level and an actual microreflection interference level; and a windowing module configured to window an OFDM (orthogonal frequency division multiplexed) symbol utilizing the guard interval remainder. The apparatus may further include a channel estimator module configured to determine a predicted channel frequency response based, at least in part, on a probing symbol; and a pre-equalizer module configured to pre-equalize the OFDM symbol based, at least in part, on the predicted channel frequency response.
摘要翻译：一个实施例提供了一种装置。该装置包括：优化模块，其被配置为至少部分地基于允许的微反射干扰电平与实际微反射干扰电平的比较来确定保护间隔余数; 以及窗口模块，被配置为利用所述保护间隔余数来对OFDM（正交频分复用）符号进行窗口化。该装置还可以包括信道估计器模块，其被配置为至少部分地基于探测符号来确定预测的信道频率响应; 以及预均衡器模块，其被配置为至少部分地基于所预测的信道频率响应来预均衡所述OFDM符号。

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