公开(公告)号：US20050101259A1

公开(公告)日：2005-05-12

申请号：US10792127

申请日：2004-03-04

Applicant: Wen Tong ,  Ming Jia ,  Peiying Zhu ,  Alexandre Chloma ,  Mikhail Bakouline ,  Vitali Kreindeline

Inventor： Wen Tong ,  Ming Jia ,  Peiying Zhu ,  Alexandre Chloma ,  Mikhail Bakouline ,  Vitali Kreindeline

IPC: H04B7/06 ,  H04L1/06 ,  H04L25/02 ,  H04B1/00 ,  H04B7/00

CPC classification number: H04B7/0482 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0626 ,  H04L1/0656 ,  H04L25/0248 ,  H04L25/03343 ,  H04L2025/03426

Abstract: Systems and methods of optimizing communication channels in multi-user communication systems are provided. Coding weights are determined based on communication channel state information for communication channels between a transmitter and multiple receivers. The coding weights are applied to communication signals to be transmitted from the transmitter to the receivers. Each receiver decodes received signals using inverses of the coding weights. Embodiments of the invention support multi-user MIMO (Multiple Input Multiple Output) where each receiver has fewer antennas than the transmitter, and enhance system performance if the total number of antennas at all of the receivers exceeds the number of antennas at the transmitter.

Abstract translation: 提供了在多用户通信系统中优化通信信道的系统和方法。 基于用于发射机和多个接收机之间的通信信道的通信信道状态信息来确定编码权重。 编码权重被应用于从发射机发射到接收机的通信信号。 每个接收机使用反编码权重来解码接收到的信号。 本发明的实施例支持多用户MIMO（多输入多输出），其中每个接收机具有比发射机更少的天线，并且如果所有接收机的天线总数超过发射机的天线数量，则增强系统性能。

公开(公告)号：US20050094740A1

公开(公告)日：2005-05-05

申请号：US10699386

申请日：2003-10-31

Applicant: Mohammad Borran ,  Prabodh Varshney ,  Jorma Lilleberg

Inventor： Mohammad Borran ,  Prabodh Varshney ,  Jorma Lilleberg

IPC: H04K1/10 ,  H04L20060101

CPC classification number: H04L27/34 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/0656

Abstract: A multi-level space time signal constellation that is optimized for use with a multi-carrier, multi-path communication scheme includes points on a first level separated from points on a mutually exclusive second level by a minimum distance that is based on a conditional probability distribution, preferably a Kullback-Leibler (KL) distance. Points within one level may be separated by a Euclidean distance, but spherical levels are rotated relative to one another to maximize a minimum inter-level KL distance. A receiver uses pilot symbols to estimate the channels and two-stage symbol detection, determining in one stage the constellation level and in another stage the point in the level. The receiver calculates a likelihood function based on a conditional distribution which does not reduce to the Euclidean-based nearest-neighbor detector. A single stored constellation may be scaled based on received signal to noise ratio. Each constellation defines n=2M real dimensions, wherein M is the number of transmit antennas.

Abstract translation: 优化用于多载波多路径通信方案的多级时空信号星座包括在相互排斥的第二级别上的点之间的第一级上的点与基于条件概率的最小距离的点 分布，最好是Kullback-Leibler（KL）距离。 一个级别内的点可以通过欧几里德距离分开，但是球面水平相对于彼此旋转以使最小跨越距离KL距离最大化。 接收机使用导频符号来估计信道和两级符号检测，在一个阶段中确定星座级别，在另一级中确定该级别中的点。 接收机基于不减少到基于欧几里德的最近邻检测器的条件分布来计算似然函数。 可以基于接收到的信噪比来缩放单个存储的星座。 每个星座定义n = 2M个实际维度，其中M是发射天线的数量。

公开(公告)号：US20050013379A1

公开(公告)日：2005-01-20

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: H04L27/26 ,  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。

公开(公告)号：US20030198282A1

公开(公告)日：2003-10-23

申请号：US10127327

申请日：2002-04-19

Applicant: Nokia Corporation

Inventor： Djordje Tujkovic ,  Emiliano Sottani

IPC: H04B001/69

CPC classification number: H04L1/006 ,  H04B1/707 ,  H04B7/10 ,  H04L1/0071 ,  H04L1/0656

Abstract: A method and system for processing information data in a wireless communications system for reducing the complexity in spatial multiplexing of signals over different transmit antennas. In orthogonalized spatial multiplexing with the resolution of one, encoded data are interleaved and converted into a plurality of parallel sub-streams. Each sub-stream is then spreaded with a user specific spreading code with an intentional delay offset of few chips prior to modulating the encoded data for transmission. Likewise, in orthogonalized spatial multiplexing with the resolution of two, encoded data are interleaved and converted into a plurality of parallel sub-stream pairs. Each sub-stream pair is spreaded pairwise with a user specific spreading code with an intentional delay offset of few chips.

Abstract translation: 一种在无线通信系统中处理信息数据的方法和系统，用于降低在不同发射天线上信号的空间复用的复杂度。 在分辨率为1的正交空间复用中，编码数据被交织并转换成多个并行子流。 然后，在调制用于传输的编码数据之前，用用户特定的扩展码分散每个子流，其具有少量芯片的有意延迟偏移。 类似地，在具有二分辨率的正交空间复用中，编码数据被交织并转换成多个并行子流对。 每个子流对与用户特定的扩展码成对扩展，具有少量芯片的有意延迟偏移。

公开(公告)号：US20030021355A1

公开(公告)日：2003-01-30

申请号：US10200211

申请日：2002-07-23

Applicant: LG Electronics Inc.

Inventor： Cheol Woo You

IPC: H04B007/02

CPC classification number: H04L1/0065 ,  H04B7/0613 ,  H04L1/0059 ,  H04L1/0071 ,  H04L1/0625 ,  H04L1/0656

Abstract: Disclosed is a signal transmitting and receiving method and system in a mobile communication system provided with a plurality of antennas. The signal transmitting method in the mobile communication system that transmits a signal through a plurality of antennas includes separating by layers and primarily encoding input data for an independent signal generation interleaving in space and time the primarily encoded data of the respective layers, receiving and secondarily encoding the interleaved data, and transmitting the secondarily encoded data through the plurality of antennas.

Abstract translation: 公开了一种设置有多个天线的移动通信系统中的信号发送和接收方法和系统。 通过多个天线发送信号的移动通信系统中的信号发送方法包括分层，主要编码用于空间中的独立信号生成交织的输入数据，并且分别对各层的主编码数据进行编码，接收和二次编码 交错数据，以及通过多个天线发送二次编码数据。

公开(公告)号：US09716567B2

公开(公告)日：2017-07-25

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: H04B7/02 ,  H04L1/02 ,  H04L1/00 ,  H04L1/18 ,  H04L1/06 ,  H04L1/16

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.

公开(公告)号：US09673932B2

公开(公告)日：2017-06-06

申请号：US14803698

申请日：2015-07-20

Applicant: APPLE INC.

Inventor： Dong-Sheng Yu ,  Hosein Nikopour ,  Sophie Vrzic ,  Mo-Han Fong ,  Robert Novak ,  Jun Yuan

IPC: H04L1/00 ,  H03M13/29 ,  H04J13/16 ,  H04L1/06 ,  H04L5/00 ,  H04W28/06

CPC classification number: H04L1/0041 ,  H03M13/2903 ,  H04J13/16 ,  H04L1/0026 ,  H04L1/0042 ,  H04L1/0047 ,  H04L1/0057 ,  H04L1/0067 ,  H04L1/0072 ,  H04L1/0079 ,  H04L1/0656 ,  H04L5/0048 ,  H04L5/0055 ,  H04L5/0057 ,  H04W28/06

Abstract: Transmission of uplink control message for a wireless system. The uplink control message may be encoded according to one of multiple possible schemes. The choice of encoding scheme may be made based on the control message size and/or based on the available transmission resources and/or based on the detection scheme used on the receiving end. A modulation scheme may also be selected based on such factors. CDM may be used for certain control messages. Block code encoding, such as Reed-Muller encoding may be used for certain control messages. Different transmission resources may be allocated for different control message uses. The encoding specifics may be selected to obtain a certain hamming distance and/or size of the encoded message or based on other factors.

公开(公告)号：US20160278085A1

公开(公告)日：2016-09-22

申请号：US15082590

申请日：2016-03-28

Applicant: Apple Inc.

Inventor： Hang Zhang ,  Jianglei Ma ,  Ming Jia ,  Sophie Vrzic ,  Mo-Han Fong ,  Dong-Sheng Yu ,  Hua Xu

IPC: H04W72/04 ,  H04L5/00

CPC classification number: H04W72/0446 ,  H04B7/02 ,  H04B7/0669 ,  H04B7/12 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0071 ,  H04L1/0656 ,  H04L1/1812 ,  H04L1/1887 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0039 ,  H04L5/0041 ,  H04L5/0042 ,  H04L5/0046 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0053 ,  H04L5/006 ,  H04L5/0085 ,  H04L5/0096 ,  H04L25/0226 ,  H04L25/0228 ,  H04L25/03057 ,  H04L27/2627 ,  H04L27/2655 ,  H04L65/1066 ,  H04W72/0453

Abstract: Systems and methods for OFDM channelization are provided that allow for the coexistence of sub-band channels and diversity channels. Methods of defining diversity sub-channels and sub-band sub-channels are provided and systematic channel definition and labeling schemes are provided.

公开(公告)号：US09374195B2

公开(公告)日：2016-06-21

申请号：US14678389

申请日：2015-04-03

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

Inventor： Yutaka Murakami ,  Shutai Okamura ,  Kiyotaka Kobayashi ,  Masayuki Orihashi

IPC: H03M13/00 ,  G06F11/00 ,  H04L1/00 ,  H03M13/25 ,  H03M13/27 ,  H03M13/13 ,  H03M13/29 ,  H04L1/06 ,  H04L5/00

CPC classification number: H04L1/0041 ,  H03M13/13 ,  H03M13/255 ,  H03M13/2721 ,  H03M13/2909 ,  H04L1/0003 ,  H04L1/0057 ,  H04L1/0071 ,  H04L1/0656 ,  H04L5/0023

Abstract: A transmitter apparatus wherein a relatively simple structure is used to suppress burst errors without changing the block sizes of encoded blocks even when the number of modulation multi-values is increased. An encoding part subjects transport data to a block encoding process to form block encoded data. A modulating part modulates the block encoded data to form data symbols; and an arranging (interleaving) part arranges (interleaves) the block encoded data in such a manner that the intra-block encoded data of the encoded blocks, which include their respective single different data symbol, get together, and then supplies the arranged (interleaved) block encoded data to the modulating part. In this way, there can be provided a transmitter apparatus wherein a relatively simple structure is used to suppress burst errors without changing the block sizes of encoded blocks even when the number of modulation multi-values is increased.

Abstract translation: 一种发射机装置，即使当调制多值的数量增加时，使用相对简单的结构来抑制突发错误，而不改变编码块的块大小。 编码部分将传输数据转移到块编码处理以形成块编码数据。 调制部分调制块编码数据以形成数据符号; 并且排列（交织）部分以这样的方式布置（交织）块编码数据，使得包括它们各自的单个不同数据符号的编码块的块内编码数据在一起，然后提供所安排的（交织的 ）块编码数据到调制部分。 以这种方式，可以提供一种发射机装置，即使当调制多值的数量增加时，使用相对简单的结构来抑制突发错误，而不改变编码块的块大小。

公开(公告)号：US09252990B1

公开(公告)日：2016-02-02

申请号：US13652376

申请日：2012-10-15

Applicant: Quantenna Communications, Inc.

Inventor： Pengcheng Zhan ,  Hossein Dehghan ,  Hongping Liu

IPC: H04L25/03 ,  H04L1/06

CPC classification number: H04L25/03242 ,  H04L1/005 ,  H04L1/0656 ,  H04L25/03229

Abstract: A wireless device with multiple antennae and configured to support orthogonal frequency-division multiplexed (OFDM), multiple-input multiple-output (MIMO) communications of a wireless local area network (LAN) over a wireless communication medium on a communication channel. The wireless device comprises: a MIMO demapper configured to receive a packet on the communication channel and to perform both linear together with non-linear decoding processes based on an initial communication channel estimate ‘H’, and with initial linear decoding of at least a first received symbol in a payload portion of the received packet followed by decoding of remaining symbols in the packet using non-linear sphere decoding, thereby reducing a level of complexity associated with non-linear decoding by extending a time interval available for an initial channel estimate decomposition portion of non-linear sphere decoding to span at least a portion of a n interval associated with linear decoding of at least the first received payload symbol.

Abstract translation: 一种具有多个天线并被配置为支持无线局域网（LAN）在通信信道上的无线通信介质上的正交频分复用（OFDM），多输入多输出（MIMO）通信的无线设备。 所述无线设备包括：MIMO去映射器，被配置为在所述通信信道上接收分组，并且基于初始通信信道估计'H'与非线性解码处理两者同时执行线性，并且利用初始线性解码至少第一 在接收到的分组的有效载荷部分中接收到符号，随后使用非线性球体解码解码分组中的剩余符号，从而通过扩展可用于初始信道估计分解的时间间隔来降低与非线性解码相关联的复杂度水平 部分非线性球体解码以跨越与至少第一接收到的有效载荷符号的线性解码相关联的间隔的至少一部分。