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31. 发明授权

US09270410B2 MIMO PGRC system and method 有权
标题翻译： MIMO PGRC系统和方法
公开(公告)号：US09270410B2
公开(公告)日：2016-02-23
申请号：US11418661
申请日：2006-05-05
申请人： Eko N. Onggosanusi , Anand G. Dabak , Timothy M. Schmidt , Badri N. Varadarajan
发明人： Eko N. Onggosanusi , Anand G. Dabak , Timothy M. Schmidt , Badri N. Varadarajan
IPC分类号： H04J11/00 , H04L1/00 , H04B7/06 , H04B7/08 , H04B17/336 , H04B17/382 , H04L27/26
CPC分类号： H04L47/2458 , H04B7/0691 , H04B7/0697 , H04B7/0848 , H04B7/0854 , H04B17/336 , H04B17/382 , H04J11/00 , H04L1/0003 , H04L1/0009 , H04L27/2601 , H04W8/30 , H04W24/08
摘要： A method of transmitting a wireless signal (FIGS. 3A-3C) is disclosed. A data stream is divided (306) into a first data stream and a second data stream. The first data stream is encoded (300) at a first data rate. The second data stream is encoded (320) at a second data rate different from the first data rate. A first part of the encoded first data stream is transmitted from a first transmit antenna (308). A second part of the encoded first data stream is transmitted from a second transmit antenna (312).
摘要翻译：公开了发送无线信号的方法（图3A-3C）。数据流被划分成第一数据流和第二数据流（306）。第一数据流以第一数据速率被编码（300）。以与第一数据速率不同的第二数据速率对第二数据流进行编码（320）。编码的第一数据流的第一部分从第一发射天线（308）传输。编码的第一数据流的第二部分从第二发射天线（312）传输。

32. 发明授权

US09112753B2 Interleaver design and header structure for ITU G.hnem 有权
标题翻译： ITU G.hnem的交织器设计和标题结构
公开(公告)号：US09112753B2
公开(公告)日：2015-08-18
申请号：US13101938
申请日：2011-05-05
申请人： Badri N. Varadarajan , Anand Dabak , Il Han Kim
发明人： Badri N. Varadarajan , Anand Dabak , Il Han Kim
IPC分类号： H04J99/00 , H04L27/20 , H04L27/26 , H04L5/00
CPC分类号： H04L27/20 , H04L5/0007 , H04L27/2602 , H04L27/2647
摘要： Embodiments of the invention provide an interleaver design and header fields for ITU-T G.hnem. The header may comprise two parts that are separately encoded. A common header segment is encoded alone, and an embedded header segment is encoded with payload data. The interleaver operates on blocks having a size based upon a total number of input bits in an FEC codeword block, a total number of bits loaded on symbols that span a half mains cycle, or a maximum fragment size of 3072 bits. The blocks may be repeated before interleaving. Each block and its repetitions may be interleaved together, such as for header data, or each block and repetition may be interleaved separately, such as for payload data. Cyclic padding may be used on each block to create an integer number of symbols for transmission.
摘要翻译：本发明的实施例提供了用于ITU-T G.hnem的交织器设计和报头字段。标题可以包括分开编码的两个部分。公共头段被单独编码，并且嵌入的标题段用有效载荷数据进行编码。交织器对具有基于FEC码字块中的输入位的总数的大小的块，对跨越半电源周期的符号上加载的总位数或3072位的最大片段大小进行操作。可以在交织之前重复这些块。每个块及其重复可以交织在一起，诸如用于报头数据，或者每个块和重复可以被单独交织，诸如用于有效载荷数据。可以在每个块上使用循环填充来创建用于传输的整数个符号。

33. 发明授权

US09008124B2 MAC protocols with subbanding 有权
标题翻译： MAC协议带分区
公开(公告)号：US09008124B2
公开(公告)日：2015-04-14
申请号：US13408521
申请日：2012-02-29
申请人： Kumaran Vijayasankar , Shu Du , Anand G. Dabak , Badri N. Varadarajan , Il Han Kim , Xiaolin Lu
发明人： Kumaran Vijayasankar , Shu Du , Anand G. Dabak , Badri N. Varadarajan , Il Han Kim , Xiaolin Lu
IPC分类号： H04B3/54 , H04L12/413 , H04L12/28 , H04B3/56
CPC分类号： H04L12/413 , H04B3/54 , H04B3/56 , H04B2203/5416 , H04B2203/5466 , H04L12/2838 , H04L2012/2843
摘要： Systems and methods for designing, using, and/or implementing media access control (MAC) protocols with subbanding are described. In some embodiments, a method may include receiving a beacon packet during one of a plurality of beacon slots of a superframe, each beacon slot corresponding to one of a plurality of different downlink subbands. The method may also include identifying, based on the received beacon packet, contention access periods following the beacon slots, each of the contention access periods corresponding to one of a plurality of different uplink subbands. The method may further include transmitting an information packet over each of the plurality of uplink subbands during the contention access periods. Then, the method may include receiving, during a guaranteed time slot following the contention access periods, an indication of a selected one of the plurality of uplink subbands to be used in a subsequent communications.
摘要翻译：描述了用于设计，使用和/或实现具有子带的媒体访问控制（MAC）协议的系统和方法。在一些实施例中，一种方法可以包括在超帧的多个信标时隙之一期间接收信标分组，每个信标时隙对应于多个不同的下行链路子带中的一个。该方法还可以包括基于接收到的信标分组来识别在信标时隙之后的争用接入周期，每个竞争接入周期对应于多个不同的上行链路子带之一。该方法还可以包括在竞争访问周期期间在多个上行链路子带中的每一个上传输信息分组。然后，该方法可以包括在竞争访问周期之后的保证时隙期间接收要在后续通信中使用的多个上行链路子带中所选择的一个的指示。

34. 发明授权

US08885505B2 Non-beacon network communications using frequency subbands 有权
标题翻译：使用频率子带的非信标网络通信
公开(公告)号：US08885505B2
公开(公告)日：2014-11-11
申请号：US13457590
申请日：2012-04-27
申请人： Ramanuja Vedantham , Kumaran Vijayasankar , Anand G. Dabak , Badri N. Varadarajan
发明人： Ramanuja Vedantham , Kumaran Vijayasankar , Anand G. Dabak , Badri N. Varadarajan
IPC分类号： H04W4/00 , H04B3/54 , H04L12/24
CPC分类号： H04W72/0453 , H04B3/544 , H04L41/0833 , H04W72/1231 , Y04S40/162
摘要： Systems and methods for designing, using, and/or implementing non-beacon network communications using frequency subbands are described. In various implementations, these systems and methods may be applicable to Power Line Communications (PLC). For example, a method may include transmitting a beacon request message over a given one of a plurality of frequency subbands, receiving a plurality of beacons in response to having transmitted the beacon request message, each of the plurality of beacons received over a respective one of the plurality of frequency subbands, and calculating a downlink quality report based, at least in part, upon the received beacons. The method may also include transmitting the downlink quality report over each of the plurality of frequency subbands and receiving a subband allocation command in response to having transmitted the downlink quality report, the subband allocation command indicating a downlink subband assignment and an uplink subband assignment.
摘要翻译：描述了使用频率子带设计，使用和/或实现非信标网络通信的系统和方法。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，一种方法可以包括在多个频率子带中的给定的一个频带上传送信标请求消息，响应于已经发送了信标请求消息来接收多个信标，多个信标中的每一个在所述多个频率子带，并且至少部分地基于所接收的信标来计算下行链路质量报告。该方法还可以包括：响应于已经发送下行链路质量报告，指示下行链路子带分配的子带分配命令和上行链路子带分配，在多个频率子带中的每一个上发送下行链路质量报告，并接收子带分配命令。

35. 发明授权

US08810059B2 Effective low voltage to medium voltage transmission on PRIME band 有权
标题翻译： PRIME频段有效低电压至中压传输
公开(公告)号：US08810059B2
公开(公告)日：2014-08-19
申请号：US13087116
申请日：2011-04-14
申请人： Il Han Kim , Badri N. Varadarajan , Anand G. Dabak
发明人： Il Han Kim , Badri N. Varadarajan , Anand G. Dabak
IPC分类号： H04B3/56 , H02J3/00
CPC分类号： H04B3/56 , H02J3/00 , H04B2203/5483
摘要： Coupling and interface circuits for powerline modems are disclosed. A powerline modem may be coupled to a low voltage (LV) line or a medium voltage (MV) line using a circuit that is designed to compensate for signal attenuation and loss that is created by the a LV/MV transformer and/or a MV coupler. In one embodiment, separate coupling transformers may be used by the modem for reception and transmission. In other embodiments, a capacitance is switched on the transmission line before the modem transmits to lower the line impedance.
摘要翻译：公开了用于电力线调制解调器的耦合和接口电路。电力线调制解调器可以使用被设计为补偿由LV / MV变压器和/或MV产生的信号衰减和损耗的电路而耦合到低电压（LV）线路或中压（MV）线路耦合器在一个实施例中，分离的耦合变压器可以由调制解调器用于接收和发送。在其他实施例中，在调制解调器发送之前，在传输线路上切换电容以降低线路阻抗。

36. 发明授权

US08718115B2 Building, transmitting, and receiving frame structures in power line communications 有权
标题翻译：在电力线通信中构建，发送和接收帧结构
公开(公告)号：US08718115B2
公开(公告)日：2014-05-06
申请号：US13269487
申请日：2011-10-10
申请人： Anand G. Dabak , Badri N. Varadarajan , Il Han Kim , Tarkesh Pande
发明人： Anand G. Dabak , Badri N. Varadarajan , Il Han Kim , Tarkesh Pande
IPC分类号： H04B1/00 , H04J11/00
CPC分类号： H04L69/22 , H04B3/30 , H04B3/54 , H04B3/542 , H04B10/11 , H04B2001/6912
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）。

37. 发明授权

US08683305B2 Rate matching and scrambling techniques for control signaling 有权
标题翻译：控制信号的速率匹配和加扰技术
公开(公告)号：US08683305B2
公开(公告)日：2014-03-25
申请号：US12170416
申请日：2008-07-09
申请人： Badri N. Varadarajan , Xiaomeng Shi , Eko N. Onggosanusi
发明人： Badri N. Varadarajan , Xiaomeng Shi , Eko N. Onggosanusi
IPC分类号： H03M13/03
CPC分类号： H03M13/1111 , H04L1/0013 , H04L1/0046 , H04L1/0065 , H04L1/0067 , H04L1/0072 , H04L27/2626
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 includes an input padding module configured to provide padded bits having padding bits added to payload bits for one or more control channels, and a scrambling module configured to apply a masking sequence to one or more of the padded bits to generate scrambled bits. Additionally, the transmitter also includes an encoding module configured to perform forward error correction encoding and rate matching on the scrambled bits to obtain a required number of control channel output bits, and a transmit module configured to transmit the control channel output bits for one or more control channels.
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，发射机包括：输入填充模块，其被配置为提供填充比特，其具有添加到一个或多个控制信道的有效载荷比特的填充比特;以及加扰模块，被配置为向一个或多个填充比特应用屏蔽序列以产生乱码此外，发射机还包括编码模块，其被配置为对加扰比特执行前向纠错编码和速率匹配，以获得所需数量的控制信道输出比特;以及发射模块，被配置为发送用于一个或多个的控制信道输出比特控制通道。

38. 发明授权

US08270518B2 Higher order multiple input, multiple output extension 有权
标题翻译：高阶多输入，多输出扩展
公开(公告)号：US08270518B2
公开(公告)日：2012-09-18
申请号：US12497111
申请日：2009-07-02
申请人： Eko N. Onggosanusi , Badri N. Varadarajan , Runhua Chen
发明人： Eko N. Onggosanusi , Badri N. Varadarajan , Runhua Chen
IPC分类号： H04B7/02 , H04L1/02
CPC分类号： H04L5/0023 , H04L5/0037 , H04L5/0053 , H04L5/0091
摘要： A method of multiple input multiple output downlink communications including mapping complex-valued modulation symbols onto one or more transmission layers by mapping complex-valued modulation symbols onto the layers and preceding the complex-valued modulation block of vectors and generating a block of vectors mapped onto at least four antenna ports. A first embodiment employs a maximum of two layers per codeword. A second embodiment employs no more than two codewords.
摘要翻译：一种多输入多输出下行链路通信的方法，包括：将复值调制符号映射到一个或多个传输层上，将复值调制符号映射到层上并在复数值的向量调制块之前，并产生映射到至少四个天线端口。第一实施例每个码字最多使用两层。第二实施例使用不超过两个码字。

39. 发明授权

US08265197B2 OFDM transmission methods in three phase modes 有权
标题翻译： OFDM传输方式三相模式
公开(公告)号：US08265197B2
公开(公告)日：2012-09-11
申请号：US12839315
申请日：2010-07-19
申请人： Il Han Kim , Badri N. Varadarajan , Anand G. Dabak
发明人： Il Han Kim , Badri N. Varadarajan , Anand G. Dabak
IPC分类号： H04K1/02 , H04L25/03 , H04L25/49
CPC分类号： H04B3/542 , H04B3/56 , H04B2203/5416 , H04B2203/542 , H04B2203/5466 , H04L5/0023 , H04L25/0204 , H04L25/0248 , H04L25/0276 , H04L27/2626 , H04L27/2647
摘要： Systems and methods for power line transmission are disclosed in which transmitters and receivers are connected to one or more phases of the power line. At least one symbol stream to be transmitted on the power line network is generated. The at least one symbol stream is scaled using a weight vector to generate a plurality of scaled symbol streams. The weight vector comprises a plurality of weights, each corresponding to a phase of the power line network. Each of the scaled symbol streams are transmitted on a corresponding phase of the power line network. A zero crossing detector identifies phase information for a receiver. A concentrator adapts signals to be sent to the receiver based upon the phase associated with the receiver.
摘要翻译：公开了用于电力线传输的系统和方法，其中发射器和接收器连接到电力线的一个或多个相。生成要在电力线网络上发送的至少一个符号流。使用权重向量来缩放至少一个符号流以生成多个缩放的符号流。权重向量包括多个权重，每个权重对应于电力线网络的相位。每个缩放的符号流在电力线网络的相应相位上传输。零交叉检测器识别接收机的相位信息。集中器根据与接收器相关的相位来调整要发送到接收机的信号。

40. 发明申请

US20120099628A1 Symbol-Level Repetition Coding in Power Line Communications 有权
标题翻译：电力线通信中的符号级重复编码
公开(公告)号：US20120099628A1
公开(公告)日：2012-04-26
申请号：US13267300
申请日：2011-10-06
申请人： Il Han Kim , Badri N. Varadarajan , Anand G. Dabak
发明人： Il Han Kim , Badri N. Varadarajan , Anand G. Dabak
IPC分类号： H04B3/00 , H04B1/38
CPC分类号： H04L1/08 , H04B3/54 , H04B3/546 , H04B2203/5408 , H04B2203/5425 , H04B2203/5433 , H04B2203/5466 , H04L1/0059 , H04L1/0065
摘要： Systems and methods for implementing symbol-level repetition coding in power line communications (PLC) are described. In some embodiments, these systems and methods may provide reliable communication in severe channel environments of PLC networks, at least in part, by changing the forward error correction (FEC) used by various devices operating within current PLC systems. For example, a method may include receiving a PLC signal and applying convolutional encoding to the received signal, the convolutional encoding producing an encoded signal. The method may also include performing a subcarrier modulation operation upon the encoded signal, the subcarrier modulation operation producing a modulated signal. The method may further include applying symbol-level repetition coding to the modulated signal, the symbol-level repetition coding producing a repetitious signal. In some cases, one or more distinct repetition patterns may be applied to different symbols or portions thereof. The repetitious signal may then be transmitted over a power line.
摘要翻译：描述了在电力线通信（PLC）中实现符号级重复编码的系统和方法。在一些实施例中，这些系统和方法可以至少部分地通过改变在当前PLC系统中操作的各种设备使用的前向纠错（FEC）来在PLC网络的严酷信道环境中提供可靠的通信。例如，一种方法可以包括接收PLC信号并对接收到的信号应用卷积编码，卷积编码产生编码信号。该方法还可以包括对编码信号执行子载波调制操作，产生调制信号的子载波调制操作。该方法还可以包括对调制信号应用符号级重复编码，产生符号级重复编码产生重复信号。在一些情况下，可以将一个或多个不同的重复图案应用于不同的符号或其部分。然后可以通过电力线传输重复信号。

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