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    SERVICE IN COMMUNICATION SYSTEMS
    41.
    发明申请
    SERVICE IN COMMUNICATION SYSTEMS 有权
    通信系统服务

    公开(公告)号：US20100067568A1

    公开(公告)日：2010-03-18

    申请号：US12448224

    申请日：2006-12-14

    Applicant: Joshua Lawrence Koslov ,  Wen Gao ,  Yik Chung Wu

    Inventor： Joshua Lawrence Koslov ,  Wen Gao ,  Yik Chung Wu

    IPC: H04B17/00 ,  H04L27/06

    CPC classification number: H04L1/0003 ,  H04L1/0016 ,  H04L1/0025 ,  H04L1/0656 ,  H04L1/1671 ,  H04L1/1848

    Abstract: A method and apparatus for improving performance in communication systems is provided. In one implementation, initial encoded data that has been encoded with a rateless code is received. A quality metric is determined for a communication medium on which the initial encoded data has been received. A modulation scheme used in sending the initial encoded data on the communication medium is identified. An estimate is determined, based on the identified modulation scheme and the determined quality metric, of an amount of mutual information being received per unit of received encoded data. An amount of mutual information being received is determined, based on the determined estimate.

    Abstract translation: 提供了一种用于提高通信系统性能的方法和装置。 在一个实现中，接收已经用无法编码的编码的初始编码数据。 对已经接收到初始编码数据的通信介质确定质量度量。 识别用于在通信介质上发送初始编码数据的调制方案。 基于所识别的调制方案和确定的质量度量，确定每单位接收的编码数据接收的互信息量的估计。 基于所确定的估计来确定正在接收的互信息量。

    Wireless communications system, wireless communications method, and wireless communications apparatus
    42.
    发明授权
    Wireless communications system, wireless communications method, and wireless communications apparatus 有权
    无线通信系统，无线通信方法和无线通信装置

    公开(公告)号：US07680461B2

    公开(公告)日：2010-03-16

    申请号：US10946074

    申请日：2004-09-22

    Applicant: Hiroaki Takano

    Inventor： Hiroaki Takano

    IPC: H04B1/00

    CPC classification number: H04L1/0656 ,  H04B7/0421 ,  H04B7/0615 ,  H04B7/0619 ,  H04B7/0842 ,  H04L1/0618

    Abstract: In an SVD-MIMO transmission using a singular value decomposition, the amount of information fed back to a transmitter from a receiver is reduced. Instead of feeding back to the transmitter, a transmission weighting vector V obtained by performing a singular value decomposition of a channel information matrix obtained by the receiver, the receiver sends reference symbols to the transmitter, which obtains the channel information matrix and performs the singular value decomposition to yield the vector V necessary when transmitting data. In the procedure of obtaining the vector V, a noncoincidence between channel matrices in the opposite directions is compensated for, by performing a calibration for compensating an error between transmitting and receiving analog devices on the part of both the transmitter and the receiver.

    Abstract translation: 在使用奇异值分解的SVD-MIMO传输中，减少了从接收机反馈到发射机的信息量。 代替反馈到发射机，通过执行由接收机获得的信道信息矩阵的奇异值分解获得的传输加权向量V，接收机向发射机发送参考符号，该发射机获得信道信息矩阵并执行奇异值 分解以产生传输数据所需的矢量V. 在获得矢量V的过程中，通过执行用于补偿发射机和接收机的发射和接收模拟装置之间的误差的校准来补偿相反方向上的信道矩阵之间的不一致性。

    Encoding for digital communications in a multiple-input, multiple-output environment
    43.
    发明授权
    Encoding for digital communications in a multiple-input, multiple-output environment 有权
    在多输入多输出环境中对数字通信进行编码

    公开(公告)号：US07668224B2

    公开(公告)日：2010-02-23

    申请号：US11465020

    申请日：2006-08-16

    Applicant: Dale E. Hocevar ,  Anuj Batra

    Inventor： Dale E. Hocevar ,  Anuj Batra

    IPC: H04B1/00

    CPC classification number: H04L1/0656 ,  H04L1/0041 ,  H04L1/0057 ,  H04L1/0068 ,  H04L1/08 ,  H04L27/2602

    Abstract: Transceiver circuitry for use in a multiple-input, multiple-output (MIMO), orthogonal frequency-division multiplexing (OFDM), communications environment, is disclosed. Error correction coding according to a fixed-block size code, such as low density parity check (LDPC) coding, is implemented. The codeword length, and codeword arrangement, are selected by determining a minimum number of OFDM symbol periods required for a payload size, and the number of available information bits in those symbol periods. A rule-based approach, for example in a table, is used to select the codeword length, and the number of codewords required. Shortening is then applied to the code, followed by determining whether puncturing or repeating of bits is necessary to efficiently use the available OFDM symbols.

    Abstract translation: 公开了用于多输入，多输出（MIMO），正交频分复用（OFDM），通信环境中的收发器电路。 实现了诸如低密度奇偶校验（LDPC）编码之类的固定块大小码的纠错编码。 通过确定有效载荷大小所需的OFDM符号周期的最小数目以及那些符号周期中的可用信息比特数来选择码字长度和码字排列。 例如在表中使用基于规则的方法来选择码字长度和所需的码字数量。 然后将缩短应用于代码，随后确定是否需要打孔或重复位以有效地使用可用的OFDM符号。

    Technique for improving multiple-channel multi-tone transmissions
    45.
    发明授权
    Technique for improving multiple-channel multi-tone transmissions 失效
    改善多声道多音调传输的技术

    公开(公告)号：US07653138B2

    公开(公告)日：2010-01-26

    申请号：US10874329

    申请日：2004-06-24

    Applicant: Patrick Duvaut ,  Ehud Langberg ,  William Scholtz

    Inventor： Patrick Duvaut ,  Ehud Langberg ,  William Scholtz

    IPC: H04L27/00

    CPC classification number: H04L1/0656 ,  H04L27/2602 ,  H04L27/2626 ,  H04L27/2647

    Abstract: A technique for improving multiple-channel multi-tone transmissions is disclosed. According to one particular embodiment, a method for transmitting data over at least two bonded channels is provided, wherein each of the at least two bonded channels comprises a plurality of tones. The method may comprise: transmitting a first symbol stream over a first tone in a first bonded channel and over a second tone in a second bonded channel, wherein the first tone is bonded to the second tone, and the transmissions over the first tone and the second tone are substantially in parallel; transmitting a second symbol stream over a third tone in the first bonded channel; and transmitting a third symbol stream over a fourth tone in the second bonded channel, wherein the third tone is bonded to the fourth tone, and the transmissions of the second symbol stream and the third symbol stream are substantially in parallel.

    Abstract translation: 公开了一种用于改善多声道多音调传输的技术。 根据一个特定实施例，提供了一种用于在至少两个绑定信道上传输数据的方法，其中所述至少两个绑定信道中的每一个包括多个音调。 该方法可以包括：通过第一绑定信道中的第一音调和第二绑定信道中的第二音调发送第一符号流，其中第一音调被绑定到第二音调，并且通过第一音调和 第二音基本上是平行的; 在所述第一绑定信道中通过第三音调发送第二符号流; 以及在所述第二绑定信道中通过第四音调发送第三符号流，其中所述第三音调被绑定到所述第四音调，并且所述第二符号流和所述第三符号流的传输基本上是并行的。

    METHOD FOR TRANSMITTING A SEQUENCE OF SYMBOLS FOR EXPLOITING TRANSMIT DIVERSITY
    46.
    发明申请
    METHOD FOR TRANSMITTING A SEQUENCE OF SYMBOLS FOR EXPLOITING TRANSMIT DIVERSITY 有权
    用于发送用于发送传输多样性的符号序列的方法

    公开(公告)号：US20090316824A1

    公开(公告)日：2009-12-24

    申请号：US12489213

    申请日：2009-06-22

    Applicant: Fabien BUDA ,  Bertrand MUQUET ,  Serdar SEZGINER

    Inventor： Fabien BUDA ,  Bertrand MUQUET ,  Serdar SEZGINER

    IPC: H04L27/00

    CPC classification number: H04L1/0656 ,  H04L1/0056

    Abstract: An embodiment of a method for transmitting data through at least a channel in a wireless communication system, the method comprising at least the steps of: encoding the data by performing a forward-error-correction encoding, forming a sequence of symbols from the encoded data, forming an M-by-T coding matrix from said sequence of symbols, each column of the coding matrix comprising N different symbols of the sequence of symbols and M−N zeros, N being an integer equal at least to one, T representing the number of consecutive transmission intervals, M representing the total number of transmit antennas, and using the coding matrix for transmitting the sequence of symbols during the T consecutive transmission intervals, by transmitting one different column of the coding matrix at each transmission interval through the M transmit antennas, only N transmit antennas are enabled during a given transmission interval.

    Abstract translation: 一种用于在无线通信系统中通过至少一个信道发送数据的方法的实施例，所述方法至少包括以下步骤：通过执行前向纠错编码对所述数据进行编码，从编码数据形成符号序列 ，从所述符号序列形成M-by-T编码矩阵，所述编码矩阵的每列包括所述符号序列和MN零的N个不同符号，N为等于至少一个的整数，T表示 连续发送间隔，M表示发送天线的总数，并且在T个连续发送间隔期间使用用于发送符号序列的编码矩阵，通过M个发送天线在每个发送间隔发送编码矩阵的一个不同列， 在给定的传输间隔期间只有N个发射天线被使能。

    Advanced MIMO interleaving
    47.
    发明授权
    Advanced MIMO interleaving 有权
    高级MIMO交织

    公开(公告)号：US07570697B2

    公开(公告)日：2009-08-04

    申请号：US11173177

    申请日：2005-07-01

    Applicant: D. J. Richard van Nee

    Inventor： D. J. Richard van Nee

    IPC: H04K1/10 ,  H04L27/28

    CPC classification number: H04L1/0071 ,  H03M13/2757 ,  H04B7/04 ,  H04L1/0041 ,  H04L1/06 ,  H04L1/0656 ,  H04L27/2601 ,  H04L27/2602

    Abstract: A MIMO transmitter including an interleaving system for parsing encoded bits to a plurality of spatial streams and a plurality of interleavers to interleave bits for spatial streams such that at least a first spatial stream uses a first stream interleaver that interleaves with a pattern distinct from a second stream interleaver interleaving for a second spatial stream.

    Abstract translation: 一种MIMO发射机，包括用于将编码比特解析为多个空间流的交织系统和多个交织器，以交织空间流的比特，使得至少第一空间流使用第一流交织器，该第一流交织器与不同于第二个 用于第二空间流的流交织器交织。

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