公开(公告)号：US07292643B1

公开(公告)日：2007-11-06

申请号：US10643756

申请日：2003-08-18

Applicant: James Gardner

Inventor： James Gardner

IPC: H04L5/12

CPC classification number: H04L27/3416 ,  H04L1/006 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/065

Abstract: At the transmitting end of a multi-input multi-output communication system having at least two transmit antennas and Mr receive antennas, each symbol of a symbol coset is first arranged so that distinct symbols have distinct real and imaginary components for some set of symbols. The real components of each pair of the arranged symbols form a complex number that is transmitted on the first one of the transmit antennas. The imaginary components of each pair of the arranged symbols form a second complex number that is transmitted on the second one of the transmit antennas. At the receiving end, a decoder receives vector r of the received complex numbers and a channel matrix H, and in response, computes a set of associated distance and label metrics for each of the transmit antennas. A Viterbi decoder receives the computed distance and label metrics and identifies the most likely transmitted coset.

Abstract translation: 在具有至少两个发射天线和M SUB接收天线的多输入多输出通信系统的发射端，首先布置符号陪集的每个符号，使得不同符号具有不同的实数和 一些符号的虚部。 每对排列的符号的实际分量形成在第一个发送天线上发送的复数。 每对排列的符号的每个虚构分量形成在第二个发射天线上传输的第二复数。 在接收端，解码器接收所接收的复数的向量r和信道矩阵H，并且作为响应，针对每个发射天线计算一组相关联的距离和标签度量。 维特比解码器接收计算的距离和标签度量，并识别最可能发送的陪集。

公开(公告)号：US20070201632A1

公开(公告)日：2007-08-30

申请号：US11707532

申请日：2007-02-16

Applicant: Dumitru Ionescu

Inventor： Dumitru Ionescu

IPC: H04M1/64

CPC classification number: H04B7/0669 ,  H03M13/11 ,  H03M13/1102 ,  H04B7/0837 ,  H04B7/0891 ,  H04L1/0631 ,  H04L1/065 ,  H04L1/0668 ,  H04L25/03171 ,  H04L25/03242 ,  H04L27/2647 ,  H04L2025/03426

Abstract: Disclosed is a method, computer program product and an apparatus providing a novel multiple input/multiple output (MIMO) receiver. The method includes receiving a plurality of signals through a plurality of antennas, the plurality of signals being modulated with a space-time lattice code; removing an effect of a channel matrix from the received signals to provide an equalized received signal; and lattice detecting the equalized received signal based on a Tanner graph representation of the lattice. The Tanner graph representation is one where lattice points inside a shaping region of interest are partitioned into a plurality of subgroups, where each subgroup includes a plurality of different lattice points labeled by an Abelian group block codeword, and where lattice detecting operates on the subgroups. The labels of all subgroups form an Abelian block code represented by the Tanner graph, and lattice detecting further includes performing belief propagation on a corresponding non-binary label Tanner graph to yield a total a posterior probability (APP) and extrinsic APPs of the labels and their coordinates, and obtaining APPs of individual lattice points.

Abstract translation: 公开了一种提供新型多输入/多输出（MIMO）接收机的方法，计算机程序产品和装置。 该方法包括通过多个天线接收多个信号，该多个信号用时空格码编码; 从接收的信号中去除信道矩阵的影响以提供均衡的接收信号; 并且基于格子的Tanner图表示来格子检测均衡的接收信号。 Tanner图表示是将感兴趣的成像区域内的格点分割成多个子组，其中每个子组包括由阿贝尔组块码字标注的多个不同的格点，并且其中晶格检测对子组进行操作。 所有子组的标签形成由Tanner图表示的Abelian块码，并且晶格检测还包括在对应的非二进制标签Tanner图上执行置信传播，以产生标签的总后验概率（APP）和外在APP， 他们的坐标，并获得单个格点的APP。

公开(公告)号：US20070196072A1

公开(公告)日：2007-08-23

申请号：US11415113

申请日：2006-05-02

Applicant: Liang Zhou ,  Michiharu Nakamura

Inventor： Liang Zhou ,  Michiharu Nakamura

IPC: G02B6/00

CPC classification number: H04L25/03331 ,  H04B7/0417 ,  H04B7/0626 ,  H04L1/0631 ,  H04L1/065

Abstract: The present invention is to provide a wireless communication system and a receiving device each capable of restraining a circuit scale and obtaining an excellent error rate performance. In a wireless communication system in which a transmitting device and a receiving device communicate in an orthogonal frequency division multiplexing system, the transmitting device includes a partition unit partitioning a transmission data sequence into a plurality of data streams and a mapping unit mapping the plurality of data streams to each of transmitting antennas by using, for a precoding matrix, columns, corresponding to a stream count of the plurality of data streams, of a right singular matrix acquired by singular value decomposition of a channel matrix, and the receiving device includes a decoding unit that Viterbi-decodes the received signals by weighting a path metric by using a weighting coefficient corresponding to a signal-to-noise ratio obtained from the present channel matrix.

Abstract translation: 本发明是提供一种无线通信系统和接收装置，其能够抑制电路规模并获得出色的性能。 在发送装置和接收装置在正交频分复用系统中进行通信的无线通信系统中，发送装置具有将发送数据序列分割成多个数据流的分割部，以及映射单元 通过对于预编码矩阵使用与多个数据流的流计数相对应的通过信道矩阵的奇异值分解获取的右奇异矩阵的列，发送到每个发送天线，并且接收装置包括解码 维特比通过使用与从当前信道矩阵获得的信噪比对应的加权系数对路径度量进行加权来对接收信号进行解码的单元。

公开(公告)号：US07065148B2

公开(公告)日：2006-06-20

申请号：US09985886

申请日：2001-11-06

Applicant: Nambirajan Seshadri ,  Hamid Jafarkhani

Inventor： Nambirajan Seshadri ,  Hamid Jafarkhani

IPC: H04L23/02

CPC classification number: H04L1/006 ,  H04L1/0065 ,  H04L1/0618 ,  H04L1/0643 ,  H04L1/065 ,  H04L1/0668

Abstract: A super set of space-time block codes is combined with set partitioning to form super-orthogonal space-time trellis codes having full diversity, enhanced coding gains, and improved rates. In communications systems, these codes are implemented by an encoder of a diverse transmitter to send an information signal to a receiver having one or more receiver elements. A decoder in the receiver decodes the encoded signal to reproduce the information signal. A method of the invention is used to generate set partitioning structures and trellis structures that enable code designers to systematically design the codes of the invention.

公开(公告)号：US07054377B1

公开(公告)日：2006-05-30

申请号：US09534696

申请日：2000-03-24

Applicant: William L. Betts

Inventor： William L. Betts

IPC: H04L5/12

CPC classification number: H04L1/0054 ,  H04L1/0041 ,  H04L1/0059 ,  H04L1/006 ,  H04L1/0071 ,  H04L1/06 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/065 ,  H04L5/023 ,  H04L27/2608 ,  H04L27/3416

Abstract: Several embodiments of a space diversity trellis interleaver system are provided for communicating data over a plurality of separate communication paths in order to inhibit distortion caused by impulse noise or other correlated noise and enhance the data transmission rate of data communications. The transmitter is designed to receive a plurality of data streams from data terminal equipment (DTE), which can be one or more devices. One or more convolutional encoders, preferably trellis encoders, encode each of the data streams. In an alternative embodiment, more than one trellis encoder is used to trellis encode each data stream. Data segments from the convolutionally encoded data streams are interleaved with a switch. The plurality of interleaved convolutionally encoded data streams are modulated and transmitted onto a respective plurality of separate communication paths. At the receiver, the plurality of data streams is received from the separate communication paths and demodulated. The data segments are de-interleaved with a switch, and then the de-interleaved data streams are convolutionally decoded with convolutional decoders, preferably trellis decoders. The de-interleaved convolutionally decoded data streams are communicated to one or more DTEs.

Abstract translation: 提供空间分集网格交织器系统的若干实施例用于在多个单独的通信路径上传送数据，以便抑制由脉冲噪声或其他相关噪声引起的失真并增强数据通信的数据传输速率。 发射机被设计为从数据终端设备（DTE）接收多个数据流，数据终端设备（DTE）可以是一个或多个设备。 一个或多个卷积编码器，优选格栅编码器，对每个数据流进行编码。 在替代实施例中，使用多于一个网格编码器对每个数据流进行网格编码。 来自卷积编码数据流的数据段与交换机交错。 多个交织的卷积编码数据流被调制并发送到相应的多个单独的通信路径上。 在接收机处，从单独的通信路径接收多个数据流并进行解调。 数据段与交换机进行解交织，然后使用卷积解码器，优选网格解码器对解交织的数据流进行卷积解码。 解交织的卷积解码的数据流被传送到一个或多个DTE。

公开(公告)号：US20060066480A1

公开(公告)日：2006-03-30

申请号：US11232610

申请日：2005-09-22

Applicant: Ivica Kostanic ,  Steven Goldberg

Inventor： Ivica Kostanic ,  Steven Goldberg

IPC: G01S3/16 ,  H04B7/216

CPC classification number: H04L1/0618 ,  H04B7/08 ,  H04L1/065

Abstract: A communications device for separating source signals provided by M signal sources includes an antenna array comprising N antenna elements for receiving at least N different summations of the M source signals. A code despreader is connected to the N antenna elements for decoding the at least N different summations of the M source signals. Each one of the N different summations includes k codes for providing k different summations of the M source signals associated therewith. A blind signal separation processor forms a mixing matrix comprising at least kN different summations of the M source signals, and separates desired source signals from the mixing matrix. The mixing matrix has a rank equal up to kN.

公开(公告)号：US20030194022A1

公开(公告)日：2003-10-16

申请号：US10430002

申请日：2003-05-06

Applicant: HUGHES ELECTRONICS CORPORATION

Inventor： A. Roger Hammons JR. ,  Hasham El Gamal

IPC: H04L027/04 ,  H04L027/12 ,  H04L027/20

CPC classification number: H04L1/0059 ,  H04L1/065

Abstract: Space-time codes for use with layered architectures with arbitrary numbers of antennas are provided such as rate k/n convolutional codes (e.g., rates higher than or equal to 1/n where n is the number of transmit antennas). Convolutional codes for layered space-time architectures are generated using matrices over the ring FnullnullDnullnull of formal power series in variable D.

公开(公告)号：US06560295B1

公开(公告)日：2003-05-06

申请号：US09613607

申请日：2000-07-11

Applicant: A. Roger Hammons, Jr. ,  Hasham El Gamal

Inventor： A. Roger Hammons, Jr. ,  Hasham El Gamal

IPC: H04L2704

CPC classification number: H04L1/0059 ,  H04L1/065

Abstract: Space-time codes for use with layered architectures with arbitrary numbers of antennas are provided such as rate k/n convolutional codes (e.g., rates higher than or equal to 1/n where n is the number of transmit antennas). Convolutional codes for layered space-time architectures are generated using matrices over the ring F[[D]] of formal power series in variable D.

Abstract translation: 提供了使用具有任意数量天线的分层架构的时空码，例如速率k / n卷积码（例如，高于或等于1 / n的速率，其中n是发射天线的数量）。 用于分层时空架构的卷积码是通过变量D中正规幂级数的环F [[D]]上的矩阵生成的。

公开(公告)号：US06229824B1

公开(公告)日：2001-05-08

申请号：US09433861

申请日：1999-11-04

Applicant: Paul D. Marko

Inventor： Paul D. Marko

IPC: H04B702

CPC classification number: H04L1/065 ,  H04L1/0041 ,  H04L1/0057 ,  H04L1/0059 ,  H04L1/0065 ,  H04L1/0071 ,  H04L1/08

Abstract: A method and apparatus encode a source data stream via convolutional encoding. Plural encoded data streams are interleaved and transmitted on plural transmission channels. Data groups generated via convolutional encoding are interleaved via time-interleaving functions to disperse selected bits within puncture groups of the data groups, bits in between data groups, and bits in selected sets of data groups to facilitate reconstruction of the source data stream from at least a portion of the interleaved data stream received on at least one transmission channel. The time-interleaving functions are selected to facilitate reconstruction of the source data stream from one transmission channel following continuous blockage. Subsets of bits of puncture groups are selected to allow reconstruction of the source data stream from more than one of the transmission channels using a minimum number of subsets. Multiple combinations of subsets can be received on both transmission channels to reconstruct the source data stream following blockage of one channel. Decoding is performed via a Viterbi decoder.

Abstract translation: 一种通过卷积编码对源数据流进行编码的方法和装置。 多个编码数据流被交织并在多个传输信道上传输。 经由卷积编码生成的数据组经由时间交织功能进行交织，以分散数据组的穿孔组中的选定位，数据组之间的位，以及所选择的数据组组中的位，以便至少从源数据流重建 交织的数据流的一部分在至少一个传输信道上接收。 选择时间交织功能以便于在连续阻塞之后从一个传输通道重建源数据流。 选择穿孔组的比特组以允许使用最小数量的子集从多于一个传输信道重构源数据流。 可以在两个传输信道上接收子集的多个组合，以在一个信道被阻塞之后重构源数据流。 通过维特比解码器进行解码。

公开(公告)号：US09882626B2

公开(公告)日：2018-01-30

申请号：US14367728

申请日：2012-12-20

Applicant: Orange

Inventor： Meryem Benammar ,  Atoosa Hatefi ,  Raphael Visoz

IPC: H04B7/155 ,  H04L1/06 ,  H04L1/00

CPC classification number: H04B7/15528 ,  H04L1/0066 ,  H04L1/0076 ,  H04L1/065

Abstract: A method for non-orthogonal transmission of a signal intended for a system with N sources, M relays and a single receiver, in which simultaneous transmission over a single spectral resource by the relays is simultaneous with a transmission over a single spectral resource by the sources. The method includes, for each relay: joint iterative detection/decoding of messages transmitted respectively by the sources during first transmission intervals to obtain decoded messages; detecting errors on the decoded messages; interleaving the detected error-free messages, followed by algebraic network coding including a linear combination, in a finite field of an order higher than two, of the interleaved messages to obtain a coded message, the linear combinations being independent, in pairs, between the relays; and channel coding to generate a signal representative of the network coded message and to transmit this signal during the subsequent transmission intervals simultaneously with a transmission by the sources.