公开(公告)号：US20150256376A1

公开(公告)日：2015-09-10

申请号：US14641428

申请日：2015-03-08

Applicant: Allen LeRoy Limberg

Inventor： Allen LeRoy Limberg

IPC: H04L27/26 ,  H04L27/34 ,  H04N21/61 ,  H04L1/04 ,  H04L5/00 ,  H04L1/00 ,  H04L5/22

CPC classification number: H04L27/2646 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/005 ,  H04L1/0058 ,  H04L1/0063 ,  H04L1/04 ,  H04L1/08 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0048 ,  H04L27/2647 ,  H04L27/3427 ,  H04L27/3483 ,  H04N21/6112 ,  H04N21/615

Abstract: Transmitter apparatus to broadcast coded orthogonal frequency-division multiplexed (COFDM) radio-frequency carriers conveying low-density parity-check (LPDC) coding transmits the same coded DTV signals twice some time apart. The coded DTV signals of initial transmissions and of final transmissions are mapped to quadrature amplitude modulation (QAM) of the COFDM carriers according to first and second patterns, respectively. Bits that map to lattice points in the first mapping pattern more likely to experience error are mapped to lattice points in the second mapping pattern less likely to experience error. Bits that map to lattice points in the second mapping pattern more likely to experience error are mapped to lattice points in the first mapping pattern less likely to experience error. Receiver apparatus combines the earlier and later transmissions of twice-transmitted COFDM signals as part of iterative procedures for de-mapping QAM and decoding the LDPC coding of the DTV signals.

Abstract translation: 传送低密度奇偶校验（LPDC）编码的编码的正交频分复用（COFDM）射频载波的发射机装置将相同的编码DTV信号相隔两次。 初始传输和最终传输的编码DTV信号分别根据第一和第二模式映射到COFDM载波的正交幅度调制（QAM）。 映射到更可能遇到错误的第一映射模式中的格点的位映射到第二映射模式中的格点不太可能经历错误。 映射到更可能经历错误的第二映射模式中的格点的位映射到第一映射模式中不太可能遇到错误的格点。 接收机装置组合了两倍传输的COFDM信号的较早和较晚的传输，作为用于解映射QAM和解码DTV信号的LDPC编码的迭代过程的一部分。

公开(公告)号：US09054786B2

公开(公告)日：2015-06-09

申请号：US14331539

申请日：2014-07-15

Applicant: Maxim Integrated Products, Inc.

Inventor： Kaveh Razazian ,  Maher Umari ,  Amir Hosein Kamalizad ,  Victor V. Loginov ,  Michael V. Navid

IPC: H04B3/54 ,  H04B3/14 ,  H04L1/00 ,  H04L1/04 ,  H04L1/08 ,  H04L25/02 ,  H04L25/03 ,  H04L27/26

CPC classification number: H04B3/54 ,  H04B3/143 ,  H04B3/542 ,  H04L1/0009 ,  H04L1/0065 ,  H04L1/0071 ,  H04L1/04 ,  H04L1/08 ,  H04L25/0286 ,  H04L25/03834 ,  H04L27/2601 ,  H04L27/2626 ,  H04L27/2647

Abstract: According to one embodiment of the invention, an integrated circuit comprises an encoding module, a modulation module and a spectral shaped module. The encoding module includes an interleaver that adapted to operate in a plurality of modes including a first mode and a second mode. The interleaver performs repetitive encoding when placed in the second mode. The modulation module is adapted to compensate for attenuations that are to be realized during propagation of a transmitted signal over the power line. The spectral shaped module is adapted to compensate for amplitude distortion and further compensates for attenuations that will be realized during propagation of the transmitted signal over the power line.

Abstract translation: 根据本发明的一个实施例，集成电路包括编码模块，调制模块和光谱模块。 编码模块包括适于以包括第一模式和第二模式的多种模式操作的交织器。 交错器在放置在第二模式时执行重复编码。 调制模块适于补偿在电力线上传输的信号传播过程中要实现的衰减。 光谱形模块适于补偿幅度失真，并进一步补偿在传输信号在电力线上传播期间将实现的衰减。

公开(公告)号：US09014302B2

公开(公告)日：2015-04-21

申请号：US13628658

申请日：2012-09-27

Applicant: Alcatel Lucent

Inventor： Hong-wei Yang

IPC: H04L27/00 ,  H04L5/00 ,  H04B7/06 ,  H04B7/12 ,  H04L1/04 ,  H04L1/06 ,  H04L1/18

CPC classification number: H04L5/0044 ,  H04B7/068 ,  H04B7/12 ,  H04L1/04 ,  H04L1/06 ,  H04L1/0618 ,  H04L1/1819 ,  H04L1/1893 ,  H04L5/0023

Abstract: A method for mapping signals to subcarriers in a sending means of a MIMO-based wireless telecommunication network and an apparatus for the same. It is characterized in that, controlling the mapping of the signals in an input signal sequence to the subcarriers, so that the signals sent by different antennas at the same time correspond to nonadjacent signals in the input signal sequence. With the aid of the present invention, burst error due to deep fading channel can be effectively avoided, and diversity gains can be also improved.

Abstract translation: 一种用于将信号映射到基于MIMO的无线电信网络的发送装置中的子载波的方法及其装置。 其特征在于，控制输入信号序列中的信号到子载波的映射，使得由不同天线同时发送的信号对应于输入信号序列中的不相邻信号。 借助于本发明，可以有效地避免由于衰落衰落信道引起的突发错误，并且还可以提高分集增益。

公开(公告)号：US20150063334A1

公开(公告)日：2015-03-05

申请号：US14467894

申请日：2014-08-25

Applicant: QUALCOMM INCORPORATED

Inventor： Sameer Vermani ,  Bin Tian ,  Rahul Tandra ,  Hemanth Sampath ,  Simone Merlin

IPC: H04W72/04 ,  H04L29/06

CPC classification number: H04W72/0406 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0011 ,  H04L1/0025 ,  H04L1/0028 ,  H04L1/0075 ,  H04L1/04 ,  H04L1/08 ,  H04L1/1812 ,  H04L1/189 ,  H04L69/22 ,  H04L69/24

Abstract: A method includes generating a data packet at a source device for transmission via an Institute of Electrical and Electronics Engineers 802.11 wireless network. The data packet includes multiple data symbols that are duplicated in the data packet. At least a portion of a preamble of the data packet is not duplicated in the data packet. The portion of the preamble indicates that the packet is a low rate mode packet. The method also includes transmitting the data packet from the source device to a destination device via the wireless network.

Abstract translation: 一种方法包括在源设备处生成数据分组，以经由电气和电子工程师协会802.11无线网络进行传输。 数据包包括在数据包中复制的多个数据符号。 数据分组的前导码的至少一部分在数据分组中不被复制。 前导码部分表示该分组是低速率模式分组。 该方法还包括经由无线网络将数据分组从源设备发送到目的设备。

公开(公告)号：US20150049828A1

公开(公告)日：2015-02-19

申请号：US14459533

申请日：2014-08-14

Applicant: LG ELECTRONICS INC.

Inventor： Jongseob BAEK ,  Jaehyung KIM ,  Woosuk KO ,  Sungryong HONG

IPC: H04L27/26

CPC classification number: H04L27/2627 ,  H04L1/0041 ,  H04L1/0058 ,  H04L1/0071 ,  H04L1/04 ,  H04L5/0007 ,  H04L5/0053 ,  H04L27/2602 ,  H04L27/2604 ,  H04L27/2626 ,  H04L27/2628 ,  H04L27/2633 ,  H04L27/2647 ,  H04L27/265

Abstract: A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for transmitting broadcast signals comprises an encoder for encoding service data, a mapper for mapping the encoded service data into a plurality of OFDM (Orthogonal Frequency Division Multiplex) symbols to build at least one signal frame, a frequency interleaver for frequency interleaving data in the at least one signal frame by using a different interleaving-seed which is used for every OFDM symbol pair comprised of two sequential OFDM symbols, a modulator for modulating the frequency interleaved data by an OFDM scheme and a transmitter for transmitting the broadcast signals having the modulated data.

公开(公告)号：US08958386B2

公开(公告)日：2015-02-17

申请号：US14286780

申请日：2014-05-23

Applicant: Adaptix, Inc.

Inventor： Xiaodong Li ,  Hui Liu ,  Wenzhong Zhang ,  Kemin Li

IPC: H04W4/00 ,  H04W74/04 ,  H04L1/00 ,  H04L1/04 ,  H04L5/00 ,  H04L5/02 ,  H04L25/02 ,  H04L27/26 ,  H04W72/08 ,  H04W72/04 ,  H04J11/00 ,  H04W24/08

CPC classification number: H04L5/0035 ,  H04B17/336 ,  H04B17/345 ,  H04J11/00 ,  H04J11/003 ,  H04J11/005 ,  H04L1/0003 ,  H04L1/0005 ,  H04L1/0009 ,  H04L1/0011 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0079 ,  H04L1/04 ,  H04L5/0007 ,  H04L5/0032 ,  H04L5/0037 ,  H04L5/0042 ,  H04L5/0046 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/006 ,  H04L5/0064 ,  H04L5/0073 ,  H04L5/0082 ,  H04L5/0094 ,  H04L5/023 ,  H04L25/0226 ,  H04L25/0228 ,  H04L27/2601 ,  H04L27/2602 ,  H04L47/125 ,  H04W24/08 ,  H04W72/04 ,  H04W72/0406 ,  H04W72/042 ,  H04W72/0453 ,  H04W72/082 ,  H04W72/085 ,  H04W74/04

Abstract: A method and apparatus for allocating subcarriers in an orthogonal frequency division multiple access (OFDMA) system is described. In one embodiment, the method comprises allocating at least one diversity cluster of subcarriers to a first subscriber and allocating at least one coherence cluster to a second subscriber.

公开(公告)号：US08953579B2

公开(公告)日：2015-02-10

申请号：US13679221

申请日：2012-11-16

Applicant: Marvell World Trade Ltd.

Inventor： Hongyuan Zhang ,  Raja Banerjea

IPC: H04J3/24 ,  H04L29/06 ,  H04B7/12 ,  H04L5/00 ,  H04L1/00 ,  H04L1/04 ,  H04L27/26

CPC classification number: H04L29/06 ,  H04B7/12 ,  H04L1/0075 ,  H04L1/04 ,  H04L5/0053 ,  H04L27/2602 ,  H04L27/2633

Abstract: In generating a physical layer (PHY) frequency duplication mode data unit for transmission via a communication channel, a preamble of the PHY frequency duplication mode data unit is generated. The preamble includes a signal field, and the preamble is configured so that a receiver can determine that the data unit is a frequency duplication mode-type data unit prior to decoding the signal field of the preamble. A payload of the PHY frequency duplication mode data unit is generated, and the PHY frequency duplication mode data unit is transmitted.

Abstract translation: 在生成经由通信信道传输的物理层（PHY）频率复制模式数据单元时，生成PHY频率复制模式数据单元的前导码。 前导码包括信号字段，并且前导码被配置为使得接收机可以在解码前导码的信号字段之前确定数据单元是频率复制模式型数据单元。 生成PHY频率复制模式数据单元的有效载荷，发送PHY频率复制模式数据单元。

公开(公告)号：US20150016565A1

公开(公告)日：2015-01-15

申请号：US14504145

申请日：2014-10-01

Applicant: Godo Kaisha IP Bridge 1

Inventor： Hiroaki Sudo

IPC: H04L27/26 ,  H04B1/04

CPC classification number: H04L27/2605 ,  H04B1/04 ,  H04L1/04 ,  H04L1/18 ,  H04L1/1896 ,  H04L5/006 ,  H04L27/2602 ,  H04L27/2613 ,  H04L27/2626 ,  H04L27/2627 ,  H04L27/2647 ,  H04L27/265 ,  H04W72/0453

Abstract: An OFDM signal transmission apparatus is provided, which includes a mapping unit configured to map first signals into N subcarriers and second signals into M subcarrier(s) to form an OFDM signal, wherein N is larger than M. The first signals are each indicating a same bit of retransmission information and the second signals are each indicating a same bit of information other than retransmission information. The OFDM signal transmission apparatus further includes a transmitting unit configured to transmit the formed OFDM signal.

Abstract translation: 提供了一种OFDM信号传输装置，其包括映射单元，其被配置为将第一信号映射为N个子载波，将第二信号映射为M个子载波，以形成OFDM信号，其中N大于M.第一信号各自表示 重发信息的相同位，第二信号各自表示与重发信息不同的信息。 OFDM信号发送装置还包括：发送单元，被配置为发送形成的OFDM信号。

公开(公告)号：US08861363B2

公开(公告)日：2014-10-14

申请号：US12978237

申请日：2010-12-23

Applicant: Ray Steinberger ,  Saga Jogadhenu

Inventor： Ray Steinberger ,  Saga Jogadhenu

IPC: H04L12/26 ,  H04L1/00

CPC classification number: H04L43/12 ,  H04B3/00 ,  H04L1/0003 ,  H04L1/04 ,  H04L12/2801 ,  H04L43/0847

Abstract: In a method for adjusting the modulation of information onto subcarriers transmitted on a network, a first modulation profile of a network node on the network is set a first density. A plurality of messages in support of a link maintenance operation (LMO) on the network are monitored. The first modulation profile of the network node is updated to a second modulation profile having a second density. The updating is based on the monitored messages. Interference is detected by determining that a link between the first network node and a second network node on the network is not conveying a predetermined class of messages correctly. The first network node is set to a third modulation profile more robust than the first and second modulation profiles in response to the detected interference. The third modulation profile is common to each network node on the network.

Abstract translation: 在将信息的调制调整到在网络上发送的子载波上的方法中，将网络上的网络节点的第一调制简档设置为第一密度。 监视支持网络上的链路维护操作（LMO）的多个消息。 网络节点的第一调制分布被更新为具有第二密度的第二调制分布。 更新基于受监视的消息。 通过确定网络上的第一网络节点和第二网络节点之间的链路不正确地传送预定类别的消息来检测干扰。 响应于检测到的干扰，第一网络节点被设置为比第一和第二调制分布更加鲁棒的第三调制分布。 第三个调制模式对于网络上的每个网络节点是共同的。

公开(公告)号：US08792359B2

公开(公告)日：2014-07-29

申请号：US13133075

申请日：2009-12-16

Applicant: Jun Mashino ,  Takatoshi Sugiyama

Inventor： Jun Mashino ,  Takatoshi Sugiyama

IPC: H04J1/16

CPC classification number: H04J11/0023 ,  H04L1/0041 ,  H04L1/0071 ,  H04L1/0086 ,  H04L1/009 ,  H04L1/04 ,  H04L1/1893 ,  H04L5/0007 ,  H04L5/0042 ,  H04L5/0058

Abstract: A communication system employs a transmitting device and a receiving device. The transmitting device allocates certain data, based on transmission data, to both a non-superposed band, corresponding to a frequency band with no interference signal present, and a superposed band, corresponding to a frequency band where an interference signal is present. Alternatively, the transmitting device allocates the data to the non-superposed band while giving a higher priority to the non-superposed band. The transmitting device then generates and transmits a multicarrier signal based on the allocation, so that the receiving device can receive it.

Abstract translation: 通信系统采用发送装置和接收装置。 发送装置基于发送数据将对应于不存在干扰信号的频带的非重叠频带和对应于存在干扰信号的频带的重叠频带分配给特定数据。 或者，发送设备将数据分配给非重叠频带，同时给予非重叠频带更高的优先级。 然后，发送装置基于分配生成并发送多载波信号，使得接收装置能够接收它。