公开(公告)号：US20100246703A1

公开(公告)日：2010-09-30

申请号：US12503465

申请日：2009-07-15

Applicant: Philip V. Orlik ,  Lu Zhang ,  Raymond Yim ,  Jinyun Zhang

Inventor： Philip V. Orlik ,  Lu Zhang ,  Raymond Yim ,  Jinyun Zhang

IPC: H04L23/02

CPC classification number: H04L1/065 ,  H04L1/0003 ,  H04L25/0212 ,  H04L25/0226

Abstract: A transmitter encodes an input bitstream using space-time trellis coding (STTC). The encoder includes a serial to parallel convertor to produce a first and second output bitstreams. First and second three bit shift registers are connected to produce first and second output bitstreams. A multiplier applies a code generating weight to each bit of the shift registers to encode the bitstreams. A first switch is connected between a last bit of the first shift register and a first bit of the second shift register. A second switch is connected between the second output and the first bit of the second shift register. The first set of encoded bit streams and the second set of encoded bitstreams are combined and mapped to a frequency domain.

Abstract translation: 发射机使用空时网格编码（STTC）对输入比特流进行编码。 编码器包括串行到并行转换器以产生第一和第二输出比特流。 连接第一和第二三位移位寄存器以产生第一和第二输出比特流。 乘法器将代码生成权重应用于移位寄存器的每个位以对比特流进行编码。 第一开关连接在第一移位寄存器的最后位和第二移位寄存器的第一位之间。 第二开关连接在第二输出端和第二移位寄存器的第一位之间。 第一组编码比特流和第二组编码比特流被组合并映射到频域。

公开(公告)号：US20090207890A1

公开(公告)日：2009-08-20

申请号：US10593011

申请日：2004-12-21

Applicant: Dong-Woon Bai ,  Woo-Yong Lee ,  Hyun-Seo Oh

Inventor： Dong-Woon Bai ,  Woo-Yong Lee ,  Hyun-Seo Oh

IPC: H04B1/707

CPC classification number: H04L1/065 ,  H04B1/707 ,  H04B7/02

Abstract: A diversity transmitting/receiving apparatus and method is provided, which is implemented using space-time trellis codes (STTC) constructed from a Pseudo Noise (PN) sequence set in a Direct Sequence (DS) CDMA system. The transmitter comprises a PN sequence generator, a space-time encoder, first and second modulators, and first and second multiple transmit antennas. The space-time encoder selects two of the multiple PN sequences to construct STTC, and space-time encodes data from a data source according to the STTC to output an Wary data symbol. The two modulators modulate the space-time encoded data according to the STTC. The two multiple transmit antennas wirelessly transmit outputs of the two modulators, respectively. By applying a method using space-time coding in a DS CDMA system including multiple transmit antennas, it is possible to achieve both diversity and additional coding gain and also to reduce multiple user interference by increasing the PN sequence length.

Abstract translation: 提供了一种分集发送/接收装置和方法，其使用由在直接序列（DS）CDMA系统中设置的伪噪声（PN）序列构成的空时网格码（STTC）来实现。 发射机包括PN序列发生器，时空编码器，第一和第二调制器以及第一和第二多个发射天线。 空时编码器选择多个PN序列中的两个构造STTC，并且根据STTC对来自数据源的数据进行空时编码以输出谨慎数据符号。 两个调制器根据STTC调制空间编码数据。 两个多个发射天线分别无线地传输两个调制器的输出。 通过在包括多个发射天线的DS CDMA系统中应用使用空时编码的方法，可以实现分集和附加编码增益两者，并且还可以通过增加PN序列长度来减少多个用户干扰。

公开(公告)号：US07194048B2

公开(公告)日：2007-03-20

申请号：US11197856

申请日：2005-08-05

Applicant: William L. Betts

Inventor： William L. Betts

IPC: H04L27/06

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。 多个交错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。 去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：US20060159199A1

公开(公告)日：2006-07-20

申请号：US11378241

申请日：2006-03-20

Applicant: Nambirajan Seshadri ,  Hamid Jafarkhani

Inventor： Nambirajan Seshadri ,  Hamid Jafarkhani

IPC: H04L27/20

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

Abstract: A super set of orthogonal 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 portioning structures and trellis structures that enable code designers to systematically design the codes of the invention.

Abstract translation: 一组超正交空时块码与集分割相结合，形成具有完全分集，增强编码增益和提高速率的超正交时空网格码。 在通信系统中，这些代码由不同发射机的编码器实现，以向具有一个或多个接收机元件的接收机发送信息信号。 接收机中的解码器解码编码信号以再现信息信号。 本发明的一种方法用于生成集合分割结构和网格结构，使代码设计者能够系统地设计本发明的代码。

公开(公告)号：US20060159195A1

公开(公告)日：2006-07-20

申请号：US11039274

申请日：2005-01-19

Applicant: Dumitru Ionescu ,  Tony Reid

Inventor： Dumitru Ionescu ,  Tony Reid

IPC: H04L1/02

CPC classification number: H04L1/0041 ,  H03M13/25 ,  H03M13/29 ,  H03M13/2972 ,  H04L1/005 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/0066 ,  H04L1/0625 ,  H04L1/065

Abstract: A system for transmitting data over a MIMO channel has a transmitter and a receiver. In the transmitter, the input data is encoded over at least two pipes by a concatenation of at least two constituent signal-space encoders. Each constituent encoder is used to generate, in response to the input data, a sequence of symbols from a channel alphabet having at least one dimension. Each symbol of the channel alphabet includes at least one complex symbol having real and imaginary coordinates. The transmitter interleaves the coordinates of the sequence of channel alphabet symbols, and transmits (from at least two transmit antennas) the interleaved coordinates. Preferably, each constituent encoder maximizes a minimum coordinate-wise Hamming distance between members of all valid pairs of symbol sequences, maximizes a minimum Euclidean distance between members of all valid pairs of different codewords, and obeys an equal eigenvalue criterion.

Abstract translation: 用于通过MIMO信道发送数据的系统具有发射机和接收机。 在发射机中，输入数据通过至少两个构成信号空间编码器的级联在至少两个管道上进行编码。 每个构成编码器用于响应于输入数据，从具有至少一个维度的频道字母表生成符号序列。 频道字母表的每个符号包括至少一个具有实数和虚拟坐标的复数符号。 发射机交织信道字母符号序列的坐标，并发送（从至少两个发射天线）交织的坐标。 优选地，每个构成编码器使所有有效的符号序列对的成员之间的最小坐标汉明距离最大化，使得所有有效的不同码字对的成员之间的最小欧几里德距离最大化并且服从相等的特征值准则。

公开(公告)号：US07012967B2

公开(公告)日：2006-03-14

申请号：US10430002

申请日：2003-05-06

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

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

IPC: H04B7/02

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.

公开(公告)号：US20050185730A1

公开(公告)日：2005-08-25

申请号：US11057842

申请日：2005-02-15

Applicant: Christopher Hansen ,  Joonsuk Kim ,  Rajendra Moorti ,  Nambirajan Seshadri ,  Jason Trachewsky

Inventor： Christopher Hansen ,  Joonsuk Kim ,  Rajendra Moorti ,  Nambirajan Seshadri ,  Jason Trachewsky

IPC: H04L1/02

CPC classification number: H04L1/0066 ,  H04L1/0643 ,  H04L1/065 ,  H04L1/1671

Abstract: A method of communicating data to M receiving antennas from N transmitting antennas, where M and N are integers and unequal, has the steps of sending a message to determine a number of transmit paths to be used, awaiting an acknowledgement message comprising a number of receiver paths, setting the number of transmit paths based on at least the acknowledgement message, producing data streams from outbound data based on the number of transmit paths, applying the data streams to a space/time encoder to produce encoded signals and transmitting the encoded signals from at least a portion of N transmitting antennas.

Abstract translation: 从N个发送天线向M个接收天线发送数据的方法，其中M和N是整数和不等的，具有发送消息以确定要使用的发送路径的数量的步骤，等待包括多个接收机的确认消息 至少基于确认消息设置发送路径的数量，基于发送路径的数量从出站数据生成数据流，将数据流应用到空间/时间编码器以产生编码信号并从 N个发射天线的至少一部分。

公开(公告)号：US20050048942A1

公开(公告)日：2005-03-03

申请号：US10651837

申请日：2003-08-29

Applicant: John Anderson Ross ,  Thomas Kenney

Inventor： John Anderson Ross ,  Thomas Kenney

IPC: H04B7/06 ,  H04L1/00 ,  H04B7/00

CPC classification number: H04L1/0071 ,  H04B7/0602 ,  H04L1/0009 ,  H04L1/0625 ,  H04L1/065

Abstract: Apparatus, and an associated method, for selectably introducing desired levels of diversity into data communicated upon a radio communication channel to effectuate a communication service, such as a 1×EV-DV communication service. Responsive to channel conditions, the level of diversity is selected, and levels of encoding are utilized. Matching encoder and decoder apparatus are provided to sending and receiving station pairs. Encoder apparatus includes constituent encoder elements, and associated interleaver elements for interleaving data that is to be communicated by associated encoder elements. One, or more, antenna transducer elements are selectably utilized to provide spatial diversity in addition to temporal diversity.

Abstract translation: 装置和相关联的方法，用于可选地将期望的分集水平引入到在无线电通信信道上传送的数据，以实现诸如1xEV-DV通信服务的通信服务。 响应信道条件，选择多样性级别，并利用编码级别。 匹配的编码器和解码装置被提供给发送和接收台对。 编码器装置包括构成编码器元件和用于交织由相关联的编码器元件传送的数据的相关联的交织器元件。 一个或多个天线换能器元件可选地用于提供除时间分集之外的空间分集。

公开(公告)号：US20150124694A1

公开(公告)日：2015-05-07

申请号：US14367728

申请日：2012-12-20

Applicant: Orange

Inventor： Meryem Benammar ,  Atoosa Hatefi ,  Raphael Visoz

IPC: H04B7/155

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.

Abstract translation: 用于具有N个源，M个继电器和单个接收机的系统的信号的非正交传输的方法，其中由继电器在单个频谱资源上的同时传输与源的单个频谱资源的传输同时进行 。 该方法包括：对于每个中继：在第一传输间隔期间由源分别发送的消息的联合迭代检测/解码，以获得解码的消息; 检测解码消息上的错误; 在所述交错消息的高于2的有序字段中交织检测到的无错误消息，接着是包括线性组合的代数网络编码，以获得编码消息，所述线性组合成对地独立于 继电器 以及信道编码以产生表示网络编码消息的信号，并且在随后的传输间隔期间与源的传输同时发送该信号。

公开(公告)号：US07769077B2

公开(公告)日：2010-08-03

申请号：US10593011

申请日：2004-12-21

Applicant: Dong-Woon Bai ,  Woo-Yong Lee ,  Hyun-Seo Oh

Inventor： Dong-Woon Bai ,  Woo-Yong Lee ,  Hyun-Seo Oh

IPC: H04B1/00

CPC classification number: H04L1/065 ,  H04B1/707 ,  H04B7/02

Abstract: A diversity transmitting/receiving apparatus and method is provided, which is implemented using space-time trellis codes (STTC) constructed from a Pseudo Noise (PN) sequence set in a Direct Sequence (DS) CDMA system. The transmitter comprises a PN sequence generator, a space-time encoder, first and second modulators, and first and second multiple transmit antennas. The space-time encoder selects two of the multiple PN sequences to construct STTC, and space-time encodes data from a data source according to the STTC to output an Wary data symbol. The two modulators modulate the space-time encoded data according to the STTC. The two multiple transmit antennas wirelessly transmit outputs of the two modulators, respectively. By applying a method using space-time coding in a DS CDMA system including multiple transmit antennas, it is possible to achieve both diversity and additional coding gain and also to reduce multiple user interference by increasing the PN sequence length.

Abstract translation: 提供了一种分集发送/接收装置和方法，其使用由在直接序列（DS）CDMA系统中设置的伪噪声（PN）序列构成的空时网格码（STTC）来实现。 发射机包括PN序列发生器，时空编码器，第一和第二调制器以及第一和第二多个发射天线。 空时编码器选择多个PN序列中的两个构造STTC，并且根据STTC对来自数据源的数据进行空时编码以输出谨慎数据符号。 两个调制器根据STTC调制空间编码数据。 两个多个发射天线分别无线地传输两个调制器的输出。 通过在包括多个发射天线的DS CDMA系统中应用使用空时编码的方法，可以实现分集和附加编码增益两者，并且还可以通过增加PN序列长度来减少多个用户干扰。