公开(公告)号：US20100146363A1

公开(公告)日：2010-06-10

申请号：US12522967

申请日：2008-01-17

申请人： Dagnachew Birru ,  Seyed-Alireza Seyedi-Esfahani ,  Richard Chen ,  Hong Zhai ,  Chun-Ting Chou

发明人： Dagnachew Birru ,  Seyed-Alireza Seyedi-Esfahani ,  Richard Chen ,  Hong Zhai ,  Chun-Ting Chou

IPC分类号： H03M13/05 ,  H04K1/10 ,  G06F11/10 ,  H03M13/27

CPC分类号： H04L1/0071 ,  H04L1/0043 ,  H04L1/0052

摘要： A Single Carrier Block Transmission (SCBT) system employs an inherently parallel approach to error correction processing. At the transmission system (200), an incoming data stream is split (210) into P parallel data streams, each having a data rate equal to a fraction of the incoming data stream's data rate. The parallel data streams are then each separately encoded (220) in P parallel encoding processes (beneficially, using P parallel encoders (222)). The P separately encoded data streams are then merged (330), interleaved (320), and mapped (310) into a single stream of encoded symbols, which are transmitted to the receiver using an arbitrary modulation (240) and transmission scheme. At the receiver (255), the received data stream is de-interleaved (350) and split into P encoded data streams, which are then decoded (285) using P parallel decoders. Then, the decoded data streams are combined or multiplexed (295) into a single data stream.

摘要翻译： 单载波块传输（SCBT）系统采用固有的并行方法进行纠错处理。 在传输系统（200）处，输入数据流被分离（210）为P个并行数据流，每个数据流的数据速率等于输入数据流的数据速率的一小部分。 然后，并行数据流在P个并行编码处理（有利地，使用P个并行编码器（222））中分别编码（220）。 然后将P个分离编码的数据流合并（330），交织（320）和映射（310）到编码符号​​的单个流中，其使用任意调制（240）和传输方案发送到接收机。 在接收机（255）处，对接收到的数据流进行解交织（350）并分割成P个编码数据流，然后使用P个并行解码器解码（285）。 然后，解码的数据流被组合或多路复用（295）到单个数据流中。

公开(公告)号：US20090268830A1

公开(公告)日：2009-10-29

申请号：US12301315

申请日：2007-05-17

申请人： Dagnachew Birru ,  Gennady Turkenich

发明人： Dagnachew Birru ,  Gennady Turkenich

IPC分类号： H04L27/28 ,  H04B17/00

CPC分类号： H04W16/14

摘要： A method (200) and system (300) for detecting temporarily available bandwidth in a frequency band: select (205) a channel in the frequency band; measure (210) an energy received in the selected channel; compare (215) the measured energy to a first threshold; when the measured energy exceeds the first threshold, determine that the channel is unavailable (220) for transmission, otherwise determine (225) that the channel is available for transmission; correlate (255) a signal received in the channel with a known feature of a signal conforming to a particular transmission format; compare (260) the correlation result to a second threshold; when the correlation result in the channel exceeds the second threshold, determine (265) that a signal conforming to the particular transmission format is present in the channel, otherwise determine (270) that the signal conforming to the particular transmission format is not present in the channel.

摘要翻译： 一种用于检测频段中临时可用带宽的方法（200）和系统（300）：选择（205）频带中的信道; 测量（210）在所选频道中接收的能量; 将测量的能量与第一阈值进行比较（215）; 当测量的能量超过第一阈值时，确定信道不可用（220）用于传输，否则确定（225）该信道可用于传输; 将在信道中接收的信号与符合特定传输格式的信号的已知特征相关（255）; 将相关结果与第二阈值进行比较（260）; 当通道中的相关结果超过第二阈值时，确定（265）在通道中存在符合特定传输格式的信号，否则确定（270）符合特定传输格式的信号不存在于 渠道。

公开(公告)号：US20080259897A1

公开(公告)日：2008-10-23

申请号：US12097554

申请日：2006-12-20

申请人： Marinus Johannes Adrianus Maria Van Helvoort ,  Jeff Bennett ,  Marc Paul Saes ,  Lambertus De Vries ,  Johannes Hendrik Den Boef ,  Robert Paul Kleihorst ,  Dagnachew Birru

发明人： Marinus Johannes Adrianus Maria Van Helvoort ,  Jeff Bennett ,  Marc Paul Saes ,  Lambertus De Vries ,  Johannes Hendrik Den Boef ,  Robert Paul Kleihorst ,  Dagnachew Birru

IPC分类号： H04J3/00

CPC分类号： G01R33/283 ,  G01R33/3692 ,  G01R33/56383

摘要： A method and an arrangement for uni- or bidirectional wireless communication of signals or data especially in a reflective environment like a MR imaging system, between at least one first transmitter and/or receiver unit (501, 601, 701; T/R1) and at least one second transmitter and/or receiver unit (801; T/R2) is disclosed. The reliability and availability of the communication link especially in a highly reflective environment is improved especially by using spread spectrum technology and ultra wide band carrier frequencies.

摘要翻译： 一种用于信号或数据的单向或双向无线通信的方法和装置，特别是在诸如MR成像系统的反射环境中，在至少一个第一发射器和/或接收器单元（501,601,701; T / R 1）之间， 并且公开了至少一个第二发射机和/或接收机单元（801; T / R 2）。 特别是在高反射环境中通信链路的可靠性和可用性得到了改进，特别是通过使用扩频技术和超宽带载波频率。

公开(公告)号：US20070092036A1

公开(公告)日：2007-04-26

申请号：US10560851

申请日：2004-06-08

申请人： Dagnachew Birru

发明人： Dagnachew Birru

IPC分类号： H04L27/04

CPC分类号： H04N21/2383 ,  H04B1/68 ,  H04L27/04 ,  H04N21/4382

摘要： A system and method is provided for generating backward compatible robust ATSC 8-VSB bit streams for transmission by a digital transmitter. A backward compatible robust digital TV modulation technique is employed where a multiplexed stream of bits is encoded such that the constellation is similar to a standard 8-VSB constellation.

摘要翻译： 提供了一种用于产生用于由数字发射机传输的后向兼容的鲁棒ATSC 8-VSB比特流的系统和方法。 采用向后兼容的鲁棒数字电视调制技术，其中对多路复用流进行编码，使得星座类似于标准的8-VSB星座。

公开(公告)号：US20060045191A1

公开(公告)日：2006-03-02

申请号：US10533174

申请日：2003-09-05

申请人： Gaddam Vasanth ,  Dagnachew Birru

发明人： Gaddam Vasanth ,  Dagnachew Birru

IPC分类号： H04L27/00

CPC分类号： H04N21/2383 ,  H04L27/04 ,  H04L2025/03382 ,  H04N21/4382

摘要： Transmission of a digital television signal conveys data parameters along with the encoder data that are utilized by the receiver in equalization and in decoding the encoded data. Leveraging the existing digital television standard data formatting, parameters are split between the two fields of a frame of the interlaced signal. Spread spectrum techniques are employed to robustly convey the parameters in encoded form to the receiver.

摘要翻译： 数字电视信号的传输与数据参数一起传送接收机所使用的编码器数据进行均衡和解码编码数据。 利用现有的数字电视标准数据格式，参数在隔行扫描信号的帧的两个场之间被分割。 采用扩频技术将编码形式的参数鲁棒地传递给接收机。

公开(公告)号：US08781014B2

公开(公告)日：2014-07-15

申请号：US12867932

申请日：2009-03-09

申请人： Dong Wang ,  Jun Yang ,  Dagnachew Birru

发明人： Dong Wang ,  Jun Yang ,  Dagnachew Birru

IPC分类号： H04B7/02 ,  H04L1/02

CPC分类号： H04L27/2613 ,  H04J13/16 ,  H04L5/0023 ,  H04L5/0042 ,  H04L5/0048 ,  H04L5/0053 ,  H04L25/0204 ,  H04L25/0228

摘要： A physical layer convergence protocol (PLCP) data structure transmitted in a multiple-input-multiple-output (MIMO) communication system. The PLCP data structure comprises a legacy portion including a legacy preamble and a legacy header, wherein the legacy preamble and the legacy header carry information compliant with at least a WiMedia standard; and a high throughput (HT) portion including a HT preamble and a HT header, and wherein the HT preamble carries information enabling a receiver of the MIMO communication system to decode received signals.

摘要翻译： 在多输入多输出（MIMO）通信系统中传输的物理层汇聚协议（PLCP）数据结构。 PLCP数据结构包括遗留部分，其包括传统前导码和遗留标题，其中传统前导码和遗留标题携带符合至少WiMedia标准的信息; 以及包括HT前导码和HT头部的高吞吐量（HT）部分，并且其中所述HT前导码携带使所述MIMO通信系统的接收机能够解码所接收信号的信息。

公开(公告)号：US20140021866A1

公开(公告)日：2014-01-23

申请号：US14009612

申请日：2012-04-04

申请人： Dagnachew Birru

发明人： Dagnachew Birru

IPC分类号： H05B37/02

CPC分类号： H05B37/02 ,  H05B37/0218 ,  Y02B20/46

摘要： A system and a method for controlling light distribution in a space including multiple installed light sources (111, 112, 221-223) and an external light source (103, 203). The method includes measuring the luminance levels of light from the multiple installed light sources (111, 112, 221-223) and the external light source (103, 203) at a plurality of measuring areas within the space, controlling the intensity level of each of the installed light sources (111, 112, 221-223) and the amount of light from the external light source entering the space (103, 203) based on the measured luminance levels, and tuning the intensity level of each of the installed light sources (111, 112, 221-223) and the amount of external light entering the space (103, 203) to optimize the conditions such that the mean-squared error between the measured luminance levels and pre-defined target luminance levels for the respective plurality of measuring areas is minimized, and the amount of energy consumed by the multiple installed light sources (111, 112, 221-223) is minimized.

摘要翻译： 一种用于控制包括多个安装光源（111,112,221-223）和外部光源（103,203）的空间中的光分布的系统和方法。 该方法包括在空间内的多个测量区域测量来自多个安装光源（111,112,221-223）和外部光源（103,203）的光的亮度水平，控制每个 的所安装的光源（111,112,221-223）和来自外部光源的光的量基于测量的亮度水平进入空间（103,203），并且调整每个所安装的光的强度水平 源（111,112,221-223）和进入空间（103,203）的外部光的量以优化条件，使得所测量的亮度水平和相应的预定目标亮度水平之间的均方误差 多个测量区域被最小化，并且由多个安装的光源（111,112,221-223）消耗的能量的量被最小化。

公开(公告)号：US08588339B2

公开(公告)日：2013-11-19

申请号：US12301315

申请日：2007-05-17

申请人： Dagnachew Birru ,  Gennady Turkenich

发明人： Dagnachew Birru ,  Gennady Turkenich

IPC分类号： H04L27/00

CPC分类号： H04W16/14

摘要： A method (200) and system (300) for detecting temporarily available bandwidth in a frequency band: select (205) a channel in the frequency band; measure (210) an energy received in the selected channel; compare (215) the measured energy to a first threshold; when the measured energy exceeds the first threshold, determine that the channel is unavailable (220) for transmission, otherwise determine (225) that the channel is available for transmission; correlate (255) a signal received in the channel with a known feature of a signal conforming to a particular transmission format; compare (260) the correlation result to a second threshold; when the correlation result in the channel exceeds the second threshold, determine (265) that a signal conforming to the particular transmission format is present in the channel, otherwise determine (270) that the signal conforming to the particular transmission format is not present in the channel.

摘要翻译： 一种用于检测频段中临时可用带宽的方法（200）和系统（300）：选择（205）频带中的信道; 测量（210）在所选频道中接收的能量; 将测量的能量与第一阈值进行比较（215）; 当测量的能量超过第一阈值时，确定信道不可用（220）用于传输，否则确定（225）该信道可用于传输; 将在信道中接收的信号与符合特定传输格式的信号的已知特征相关（255）; 将相关结果与第二阈值进行比较（260）; 当通道中的相关结果超过第二阈值时，确定（265）在通道中存在符合特定传输格式的信号，否则确定（270）符合特定传输格式的信号不存在于 渠道。

公开(公告)号：US08559552B2

公开(公告)日：2013-10-15

申请号：US12937015

申请日：2009-04-14

申请人： Dong Wang ,  Dagnachew Birru

发明人： Dong Wang ,  Dagnachew Birru

IPC分类号： H04L27/00

CPC分类号： H04L27/2626 ,  H04L1/04 ,  H04L5/0007 ,  H04L27/28

摘要： A method (300) for performing dual carrier modulation (DCM) precoding. The method comprises generating data sub-blocks (S320), independently interleaving the sub-blocks (S330), generating bit vectors by grouping bits of the interleaved sub-blocks (S350), mapping the bit vectors into data symbols (S360), and precoding the data symbols using a precoding matrix to generate precoded symbols (S370).

摘要翻译： 一种用于执行双载波调制（DCM）预编码的方法（300）。 该方法包括：生成数据子块（S320），独立地交错子块（S330），通过对交织的子块的比特进行分组（S350）生成比特向量，将比特向量映射成数据符号（S360），以及 使用预编码矩阵预编码数据符号以生成预编码符号（S370）。

公开(公告)号：US08233576B2

公开(公告)日：2012-07-31

申请号：US12096622

申请日：2006-12-05

申请人： Dagnachew Birru

发明人： Dagnachew Birru

IPC分类号： H04L7/02

CPC分类号： H04B1/7183 ,  H04B1/71637

摘要： A synchronization sequence (preamble) that is known to the receiver forms as an integral part of packet-based digital communication systems. The first operation in such digital communication systems is the detection of the beginning of a valid signal (packet). A system, apparatus, and method for a scheme to robustly detect the preamble are provided having a hierarchical cross-correlator in combination with a second stage delayed auto-correlator using the output of the cross-correlator as an input to the second stage correlator.

摘要翻译： 接收器已知的同步序列（前导码）形成为基于分组的数字通信系统的组成部分。 这种数字通信系统中的第一个操作是检测有效信号（分组）的开始。 提供一种用于鲁棒地检测前导码的方案的系统，装置和方法，其具有使用交叉相关器的输出作为第二级相关器的输入的第二级延迟自相关器的组合的分层互相关器。