-
公开(公告)号：US08755453B2
公开(公告)日：2014-06-17
申请号：US12326878
申请日：2008-12-02
IPC分类号： H04L27/00
CPC分类号： H04L5/0048 , H04B1/04 , H04L23/02 , H04L25/0202 , H04L27/2607 , H04L27/2613 , H04L27/2649
摘要： In one embodiment, a transmitter includes a binary sequence generator unit configured to provide a sequence of reference signal bits, wherein the sequence is an inseparable function of a cell identification parameter, a cyclic prefix mode corresponding to the transmitter and one or more time indices of the sequence. The transmitter also include a mapping unit that transforms the sequence of reference signal bits into a complex reference signal, and a transmit unit configured to transmit the complex reference signal. In another embodiment, a receiver includes a receive unit configured to receive a complex reference signal and a reference signal decoder unit configured to detect a sequence of reference signal bits from the complex reference signal, wherein the sequence is an inseparable function of a cell identification parameter, a cyclic prefix mode corresponding to a transmitter and one or more time indices of the sequence.
摘要翻译： 在一个实施例中，发射机包括被配置为提供参考信号比特序列的二进制序列发生器单元，其中该序列是小区识别参数的不可分离的功能，对应于发射机的循环前缀模式和一个或多个时间指数 序列。 发射机还包括将参考信号比特序列变换为复参考信号的映射单元，以及配置成发送复基准信号的发射单元。 在另一实施例中，接收机包括被配置为接收复参考信号的接收单元和被配置为从复参考信号检测参考信号位序列的参考信号解码器单元，其中该序列是小区识别参数的不可分离的函数 ，对应于发射机的循环前缀模式和序列的一个或多个时间索引。
-
2.发明授权公开(公告)号：US09565001B2
公开(公告)日：2017-02-07
申请号：US12129932
申请日：2008-05-30
CPC分类号： H04L5/0048 , H04J11/0069 , H04L5/0007 , H04L5/0023 , H04L5/0053 , H04L5/0092 , H04L27/2613 , H04L27/2626 , H04L27/2655 , H04L27/2657 , H04L27/2675
摘要： Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter is for use with a base station in a cellular communication system and includes a partitioning unit configured to provide first and second groups of guard subcarriers that partition a synchronization portion from data portions in a downlink synchronization signal. The transmitter also includes a transmit unit configured to transmit the downlink synchronization signal. Additionally, the receiver is for use with user equipment in a cellular communication system and includes a receive unit configured to receive a downlink synchronization signal. The receiver also includes a processing unit configured to provide a synchronization portion based on employing first and second groups of guard subcarriers that partition the synchronization portion from data portions of the downlink synchronization signal.
摘要翻译： 本公开的实施例提供发射机，接收机和操作发射机和接收机的方法。 在一个实施例中，发射机用于蜂窝通信系统中的基站，并且包括分配单元，其被配置为提供在下行链路同步信号中从数据部分划分同步部分的第一组和第二组保护子载波。 发射机还包括被配置为发送下行链路同步信号的发射单元。 此外，接收机用于蜂窝通信系统中的用户设备，并且包括被配置为接收下行链路同步信号的接收单元。 接收机还包括一个处理单元，该处理单元被配置为基于使用从下行链路同步信号的数据部分划分同步部分的第一和第二组保护子载波来提供同步部分。
-
3.发明申请GUARD SUBCARRIER PLACEMENT IN AN OFDM SYMBOL USED FOR SYNCHRONIZATION 有权用于同步的OFDM符号中的GUARD SUBCARRIER放置公开(公告)号：US20080298326A1
公开(公告)日：2008-12-04
申请号：US12129932
申请日：2008-05-30
IPC分类号： H04J3/06
CPC分类号： H04L5/0048 , H04J11/0069 , H04L5/0007 , H04L5/0023 , H04L5/0053 , H04L5/0092 , H04L27/2613 , H04L27/2626 , H04L27/2655 , H04L27/2657 , H04L27/2675
摘要： Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter is for use with a base station in a cellular communication system and includes a partitioning unit configured to provide first and second groups of guard subcarriers that partition a synchronization portion from data portions in a downlink synchronization signal. The transmitter also includes a transmit unit configured to transmit the downlink synchronization signal. Additionally, the receiver is for use with user equipment in a cellular communication system and includes a receive unit configured to receive a downlink synchronization signal. The receiver also includes a processing unit configured to provide a synchronization portion based on employing first and second groups of guard subcarriers that partition the synchronization portion from data portions of the downlink synchronization signal.
摘要翻译： 本公开的实施例提供发射机，接收机和操作发射机和接收机的方法。 在一个实施例中，发射机用于蜂窝通信系统中的基站，并且包括分配单元，其被配置为提供在下行链路同步信号中从数据部分划分同步部分的第一组和第二组保护子载波。 发射机还包括被配置为发送下行链路同步信号的发射单元。 此外，接收机用于蜂窝通信系统中的用户设备，并且包括被配置为接收下行链路同步信号的接收单元。 接收机还包括一个处理单元，该处理单元被配置为基于使用从下行链路同步信号的数据部分划分同步部分的第一和第二组保护子载波来提供同步部分。
-
公开(公告)号：US20100067604A1
公开(公告)日：2010-03-18
申请号：US12561990
申请日：2009-09-17
申请人： Sandeep Bhadra , Ramanuja Vedantham , Shantanu Kangude , Eko N. Onggosanusi , Anand G. Dabak , Badri N. Varadarajan , Runhua Chen , Tarkesh Pande
发明人： Sandeep Bhadra , Ramanuja Vedantham , Shantanu Kangude , Eko N. Onggosanusi , Anand G. Dabak , Badri N. Varadarajan , Runhua Chen , Tarkesh Pande
IPC分类号： H04B7/02
CPC分类号： H04B7/024
摘要： A coordinated multipoint transmitter is for use with a multiple antenna super-cell and includes primary and secondary base stations jointly connected via an X2 interface link, wherein the primary base station provides a transmission directive corresponding to an X2 interface protocol over the X2 interface link to the secondary base station for a joint transmission from the primary and secondary base stations.
摘要翻译： 协调的多点发射机用于多天线超小区，并且包括通过X2接口链路共同连接的主基站和次基站，其中主基站通过X2接口链路提供对应于X2接口协议的传输指令， 用于从一级和二级基站的联合传输的二级基站。
-
公开(公告)号：US08966337B2
公开(公告)日：2015-02-24
申请号：US13528191
申请日：2012-06-20
申请人： Ramanuja Vedantham , Gang Xu , Kumaran Vijayasankar , Anand G. Dabak , Tarkesh Pande , Il Han Kim , Xiaolin Lu
发明人： Ramanuja Vedantham , Gang Xu , Kumaran Vijayasankar , Anand G. Dabak , Tarkesh Pande , Il Han Kim , Xiaolin Lu
CPC分类号： G06F11/1004 , H03M13/09
摘要： A method of powerline communications including a first node and at least a second node on a powerline communications (PLC) channel in a PLC network. The first node sends a physical layer (PHY) data frame on the PLC channel including a preamble, a PHY header, a MAC header and a MAC payload. The MAC header includes a Cyclic Redundancy Check (CRC) field (MH-CRC field). The second node receives the data frame, parses the MAC header to reach the MH-CRC field, and performs CRC verification using the MH-CRC field to verify the MAC header. If the CRC verification is successful, (i) the second node parses another portion of the MAC header to identify a destination address of the data frame and (ii) to determine whether the data frame is intended for the second node from the destination address.
摘要翻译： 一种包括PLC网络中电力线通信（PLC）通道上的第一节点和至少第二节点的电力线通信的方法。 第一节点在PLC信道上发送物理层（PHY）数据帧，包括前同步码，PHY报头，MAC报头和MAC有效载荷。 MAC报头包括循环冗余校验（CRC）字段（MH-CRC字段）。 第二节点接收数据帧，解析MAC报头到达MH-CRC字段，并使用MH-CRC字段进行CRC校验，以验证MAC报头。 如果CRC验证成功，则（i）第二节点解析MAC报头的另一部分以识别数据帧的目的地址，以及（ii）从目的地地址确定数据帧是否用于第二节点。
-
6.发明申请Adaptive Modulation and Coding with Frame Size Adjustment for Power Line Communications (PLC) 有权用于电力线通信（PLC）的自适应调制和帧编码调整公开(公告)号：US20130051482A1
公开(公告)日：2013-02-28
申请号：US13597165
申请日：2012-08-28
申请人： Marcel Nassar , IL Han Kim , Tarkesh Pande , Anand G. Dabak
发明人： Marcel Nassar , IL Han Kim , Tarkesh Pande , Anand G. Dabak
IPC分类号： H04B3/54
CPC分类号： H04L1/0003 , H04B3/542 , H04B2203/5408 , H04B2203/5416 , H04L1/0009
摘要： Systems and methods for adaptive modulation and coding with frame size adjustment are described. In various implementations, these systems and methods may be applicable to Power Line Communications (PLC). For example, a method may include identifying a temporal region of a cyclostationary noise over which a frame is to be sent across a PLC network, the cyclostationary noise having a plurality of temporal regions, each of the plurality of temporal regions having a distinct spectral shape. The method may also include applying a given one of a plurality of Modulation and Coding Schemes (MCSs) to the frame to produce a modulated frame, wherein the given one of the plurality of MCSs is selected based, least in part, upon the spectral shape corresponding to the identified temporal region. The method may further include transmitting the modulated frame across the PLC network, at least in part, over the identified temporal region.
摘要翻译： 描述了具有帧大小调整的自适应调制和编码的系统和方法。 在各种实现中，这些系统和方法可以适用于电力线通信（PLC）。 例如，一种方法可以包括识别通过PLC网络发送帧的周期平稳噪声的时间区域，所述周期平稳噪声具有多个时间区域，所述多个时间区域中的每一个具有不同的频谱形状 。 该方法还可以包括将多个调制和编码方案（MCS）中给定的一个应用于帧以产生调制帧，其中至少部分地基于频谱形状选择多个MCS中的给定一个MCS 对应于所识别的时间区域。 该方法可以进一步包括至少部分地通过所识别的时间区域在PLC网络之间传输调制帧。
-
7.发明授权PHY payload over multiple tone masks using single tone mask PHY header information 有权使用单色调掩码PHY头信息的多个音调掩码上的PHY有效载荷公开(公告)号：US08958464B2
公开(公告)日：2015-02-17
申请号：US13493268
申请日：2012-06-11
CPC分类号： H04B3/542 , H04B2203/5408 , H04B2203/5445 , H04L5/0007 , H04L5/0037 , H04L5/0094 , H04L27/2602 , H04L27/2613 , H04L27/2666 , H04L69/22
摘要： A method of powerline communications (PLC) includes compiling a data frame for physical layer (PHY) by a first communications device at a first communications node on a powerline of a PLC network. The data frame includes a single tone PHY header portion and a data payload portion in a set of tones including at least one tone having a frequency different from a frequency of the single tone. The PHY header portion includes tone mask identification information identifying the set of tones. The first communications device transmits the data frame over the powerline to a second communications device at a second communications node on the powerline. The second communications device receives the data frame, and decodes the data payload using the tone mask identification information in the PHY header portion.
摘要翻译： 电力线通信（PLC）的方法包括在PLC网络的电力线上的第一通信节点处由第一通信设备编译用于物理层（PHY）的数据帧。 数据帧包括一组音调中的单音PHY头部部分和数据有效载荷部分，包括具有与单音频率不同的频率的至少一个音调。 PHY报头部分包括识别该组音调的色调掩码识别信息。 第一通信设备通过电力线将数据帧发送到电力线上的第二通信节点处的第二通信设备。 第二通信设备接收数据帧，并使用PHY报头部分中的色调掩码识别信息解码数据有效载荷。
-
公开(公告)号：US08792567B2
公开(公告)日：2014-07-29
申请号：US13526227
申请日：2012-06-18
申请人： Anand G. Dabak , Tarkesh Pande , Il Han Kim , Ramanuja Vedantham , Kumaran Vijayasankar , Gang Xu
发明人： Anand G. Dabak , Tarkesh Pande , Il Han Kim , Ramanuja Vedantham , Kumaran Vijayasankar , Gang Xu
IPC分类号： H04B3/00
CPC分类号： H04B3/54 , H04B2203/5416 , H04B2203/5425 , H04B2203/5495
摘要： A method of powerline communications between a plurality of nodes on a powerline communications (PLC) channel including a first node and a second node. At least one communication quality measure is determined for the PLC channel. Based on the communication quality measure, a preamble of a data frame is dynamically switched between a reference preamble having a reference symbol length including a reference number of syncP symbols and a reference number of syncM symbols and at least a first extended preamble having an extended symbol length that is greater than (>) the reference symbol length. The data frame is then transmitted on the PLC channel.
摘要翻译： 一种在包括第一节点和第二节点的电力线通信（PLC）信道上的多个节点之间的电力线通信的方法。 为PLC通道确定至少一个通信质量度量。 基于通信质量测量，在具有包括参考数量的syncP符号的参考符号长度和参考数量的syncM符号的参考前同步码和至少具有扩展符号的第一扩展前同步码之间动态地切换数据帧的前导码 长度大于（>）参考符号长度。 然后在PLC通道上传输数据帧。
-
9.发明申请Building, Transmitting, and Receiving Frame Structures in Power Line Communications 有权电力线通信中的建筑，发射和接收帧结构公开(公告)号：US20120093198A1
公开(公告)日：2012-04-19
申请号：US13269487
申请日：2011-10-10
摘要： Systems and methods for building, transmitting, and receiving frame structures in power line communications (PLC) are described. Various techniques described herein provide a preamble design using one or more symbols based on a chirp signal that yields a low peak-to-average power ratio (PAPR). According to some techniques, the preamble may be constructed with one or more different types and/or number of symbols configured to identify a PLC domain operating in close physical proximity to another PLC domain. According to other techniques, one or more preamble symbols may be interspersed within a header portion of a PLC frame to facilitate estimation of a frame boundary and/or sampling frequency offset, for example, in the presence of impulsive noise. According to yet other techniques, a PLC detector may be capable of receiving and decoding two or more types of PLC frames (e.g., using different PLC standards).
摘要翻译： 描述了在电力线通信（PLC）中构建，发送和接收帧结构的系统和方法。 本文描述的各种技术基于产生低峰值与平均功率比（PAPR）的啁啾信号提供使用一个或多个符号的前导码设计。 根据一些技术，可以使用一个或多个不同类型和/或符号数来构造前导码，该符号被配置为识别在与另一个PLC域紧密物理接近的操作的PLC域。 根据其他技术，一个或多个前导符号可以散布在PLC帧的报头部分内，以便于例如在存在脉冲噪声的情况下估计帧边界和/或采样频率偏移。 根据其他技术，PLC检测器可能能够接收和解码两个或更多类型的PLC帧（例如，使用不同的PLC标准）。
-
公开(公告)号：US08929398B2
公开(公告)日：2015-01-06
申请号：US13528667
申请日：2012-06-20
申请人： Gang Xu , Ramanuja Vedantham , Kumaran Vijayasankar , Anand G. Dabak , Tarkesh Pande , Il Han Kim , Xiaolin Lu
发明人： Gang Xu , Ramanuja Vedantham , Kumaran Vijayasankar , Anand G. Dabak , Tarkesh Pande , Il Han Kim , Xiaolin Lu
CPC分类号： H04L69/22 , H04B3/54 , H04B3/542 , H04B2203/5408
摘要： A method of powerline communications including a first node and at least a second node on a PLC channel in a PLC network. The first node sends a physical layer (PHY) data frame on the PLC channel including a preamble, PHY header, a MAC header and a MAC payload. The PHY header includes a destination address field having a destination address therein. The second node receives the data frame. The second node compares its network address to the destination address before decoding the MAC header and MAC payload, providing power savings by allowing the second node to not decode the MAC header or MAC payload if its network address does not match the destination address in the PHY header of the data frame.
摘要翻译： 一种电力线通信方法，包括PLC网络中PLC通道上的第一节点和至少第二节点。 第一节点在PLC信道上发送物理层（PHY）数据帧，包括前导码，PHY头，MAC头和MAC有效载荷。 PHY标头包括其中具有目的地地址的目的地地址字段。 第二个节点接收数据帧。 第二节点在解码MAC报头和MAC有效载荷之前将其网络地址与目标地址进行比较，通过允许第二节点如果其网络地址与PHY中的目标地址不匹配，则不解码MAC报头或MAC有效载荷，从而提供功率节省 数据帧的头。
-
-
-
-
-
-
-
-
-
搜索结果
37 条记录 (耗时 0.021 秒)