公开(公告)号：US20090232252A1

公开(公告)日：2009-09-17

申请号：US12048524

申请日：2008-03-14

Applicant: Dukhyun Kim ,  Jin-Youn Cho

Inventor： Dukhyun Kim ,  Jin-Youn Cho

IPC: H04L27/36 ,  H04L27/00

CPC classification number: H04L27/34 ,  H04L1/0643

Abstract: Systems and methods may be provided for supporting encoding of digital communications, including space time block encoding (STBC). Example systems and methods may include receiving at least one input bit, wherein the at least one input bit is associated with a mapping on a Gray-coded constellation map, storing the received at least one input bit in one or more memory locations, retrieving the at least one bit from the one or more memory locations, inverting a bit of the at least one bit to generate a conjugate of the at least one bit, and obtaining first coordinates of the conjugate according to the Gray-coded constellation map.

Abstract translation: 可以提供用于支持数字通信的编码的系统和方法，包括空间时间块编码（STBC）。 示例系统和方法可以包括接收至少一个输入位，其中所述至少一个输入位与格雷编码的星座图上的映射相关联，将所接收的至少一个输入位存储在一个或多个存储单元中， 来自所述一个或多个存储器位置的至少一个位，反转所述至少一个位的位，以生成所述至少一个位的共轭，并且根据所述灰度编码的星座图获得所述共轭的第一坐标。

公开(公告)号：US07587007B2

公开(公告)日：2009-09-08

申请号：US11929090

申请日：2007-10-30

Applicant: Siavash Alamouti ,  Vahid Tarokh

Inventor： Siavash Alamouti ,  Vahid Tarokh

IPC: H04B7/10 ,  H04L1/02

CPC classification number: H04B7/0857 ,  H04B1/02 ,  H04B7/0613 ,  H04B7/0615 ,  H04B7/0667 ,  H04B7/0669 ,  H04B7/0671 ,  H04B7/0689 ,  H04B7/0837 ,  H04B7/0845 ,  H04B7/0854 ,  H04B7/0891 ,  H04B7/12 ,  H04L1/0054 ,  H04L1/04 ,  H04L1/0606 ,  H04L1/0618 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/0643 ,  H04L1/0668 ,  H04L1/08 ,  H04L25/0202

Abstract: A simple block coding arrangement is created with symbols transmitted over a plurality of transmit channels, in connection with coding that comprises only of simple arithmetic operations, such as negation and conjugation. The diversity created by the transmitter utilizes space diversity and either time or frequency diversity. Space diversity is effected by redundantly transmitting over a plurality of antennas, time diversity is effected by redundantly transmitting at different times, and frequency diversity is effected by redundantly transmitting at different frequencies: Illustratively, using two transmit antennas and a single receive antenna, one of the disclosed embodiments provides the same diversity gain as the maximal-ratio receiver combining (MRRC) scheme with one transmit antenna and two receive antennas. The principles of this invention are applicable to arrangements with more than two antennas, and an illustrative embodiment is disclosed using the same space block code with two transmit and two receive antennas.

Abstract translation: 结合仅包括诸如否定和共轭的简单算术运算的编码，由多个发送信道发送的符号创建简单的块编码装置。 发射机产生的分集利用空间分集和时间或频率分集。 通过在多个天线上进行冗余发送来实现空间分集，通过在不同时间进行冗余发送实现时间分集，并且通过以不同频率进行冗余传输来实现频率分集：说明性地，使用两个发射天线和单个接收天线 所公开的实施例提供与最大比率接收机组合（MRRC）方案与一个发射天线和两个接收天线相同的分集增益。 本发明的原理可应用于具有两个以上天线的布置，并且使用具有两个发射天线和两个接收天线的相同空间块码公开了一个说明性实施例。

公开(公告)号：US20090202015A1

公开(公告)日：2009-08-13

申请号：US12346148

申请日：2008-12-30

Applicant: DongSeung KWON ,  Seong Keun OH ,  Moon Il LEE ,  Seung Joon LEE ,  Jong-Ee OH

Inventor： DongSeung KWON ,  Seong Keun OH ,  Moon Il LEE ,  Seung Joon LEE ,  Jong-Ee OH

IPC: H04L1/02

CPC classification number: H04B7/0667 ,  H04B7/0447 ,  H04B7/0615 ,  H04L1/0643

Abstract: A space-time code has a codeword matrix. The codeword matrix is a square matrix with dimension equal to the number of the transmit antennas, wherein a row of the codeword matrix represents combined signals transmitted by each transmit antenna and a column of the codeword matrix represents timeslots of the number of the transmit antennas. Signals are transmitted through the rows of the number of spatial multiplexing rate, in each column of the matrix. Further, the symbols of the number of the transmit antennas are combined by way of utilizing complex weights, in each row of the matrix. With this space-time code, a delay is minimized, so that change of channels can be managed efficiently. Also, the space-time code has minimum number of data symbols, and thus its complexity is minimized.

Abstract translation: 时空码具有码字矩阵。 码字矩阵是尺寸等于发射天线数量的矩阵，其中码字矩阵的行表示由每个发射天线发射的组合信号，并且码字矩阵的列表示发射天线的数量的时隙。 在矩阵的每列中，信号通过空间复用速率数的行传输。 此外，通过在矩阵的每一行中利用复数权重来组合发射天线的数量的符号。 利用这个空时码，延迟最小化，可以有效地管理频道的改变。 此外，时空码具有最小数量的数据符号，因此其复杂度被最小化。

公开(公告)号：US20090196379A1

公开(公告)日：2009-08-06

申请号：US12023780

申请日：2008-01-31

Applicant: Ying Hung Gan ,  Wai Ho Mow

Inventor： Ying Hung Gan ,  Wai Ho Mow

IPC: H04L27/06 ,  H03D1/00

CPC classification number: H04L25/03242 ,  H04L1/0054 ,  H04L1/0643 ,  H04L25/0202

Abstract: System and methodologies for reduced-complexity signal detection and decoding in a wireless communication system are provided herein. Systems and methodologies presented herein can utilize a relaxed form of the Lenstra-Lenstra-Lovasz (LLL) lattice reduction algorithm to reduce the complexity of lattice reduction operations in the context of MIMO detection. Additional systems and methodologies presented herein can apply lattice reduction in the context of a maximum likelihood (ML) detector for spherical or elliptical lattice space-time (LAST) codes.

Abstract translation: 本文提供了用于无线通信系统中的复杂度降低的信号检测和解码的系统和方法。 本文提出的系统和方法可以利用Lenstra-Lenstra-Lovasz（LLL）格点简化算法的轻松形式来降低MIMO检测背景下的格点减少运算的复杂度。 本文中提出的其他系统和方法可以在球面或椭圆形格子空间 - 时间（LAST）码的最大似然（ML）检测器的上下文中应用晶格简化。

公开(公告)号：US07567623B2

公开(公告)日：2009-07-28

申请号：US11206563

申请日：2005-08-18

Applicant: Seung-Hoon Nam ,  Jae-Hak Chung ,  Chan-Soo Hwang ,  Young-Ho Jung ,  Vahid Tarokh

Inventor： Seung-Hoon Nam ,  Jae-Hak Chung ,  Chan-Soo Hwang ,  Young-Ho Jung ,  Vahid Tarokh

IPC: H04L27/00 ,  H04K1/02

CPC classification number: H04L1/0668 ,  H04B7/0669 ,  H04L1/0625 ,  H04L1/0643 ,  H04L1/0662

Abstract: Disclosed is a differential space-time block coding apparatus with a high transmission rate in a wireless communication system employing multiple transmit antennas and a method thereof. The differential space-time block coding method includes the steps of, when elements of a transmission matrix B43v are transmitted in a predetermined block (a vth block) through a predetermined transmit antenna at a predetermined time, modulating a symbol Sv of inputted binary data to a symbol Sv+1, creating a matrix S44v+1 in a block (a (v+1)th block) following the predetermined block by substituting the modulated symbol for the matrix P44, and then, in order to perform a differential encoding function, multiplying the matrix B43v by the matrix S44v+1 so as to calculate a new matrix B43v+1 to be transmitted in the (v+1)th block.

Abstract translation: 公开了在采用多个发射天线的无线通信系统中具有高传输速率的差分时空块编码装置及其方法。 差分空时块编码方法包括以下步骤：当在预定时间通过预定发送天线在预定块（第v块）中发送发送矩阵B43v的元素时，将输入的二进制数据的符号Sv调制到 符号Sv + 1，通过将调制符号替换为矩阵P44，在预定块之后的块（a（v + 1）块中）创建矩阵S44v + 1，然后，为了执行差分编码功能 ，将矩阵B43v乘以矩阵S44v + 1，以计算要在第（v + 1）块中发送的新矩阵B43v + 1。

公开(公告)号：US07555050B2

公开(公告)日：2009-06-30

申请号：US11397133

申请日：2006-04-03

Applicant: Dong-Soo Har ,  Sun-Hee Hwang

Inventor： Dong-Soo Har ,  Sun-Hee Hwang

IPC: H04K1/10 ,  H04L27/28

CPC classification number: H04L1/0643 ,  H04L1/0631

Abstract: Provided is an STBC transceiving system with LPA-based beamformer, including: an STBC encoder having branches, in number of D, to generate output signals in number of D for an input signal; a beamformer having output antennas in number of D*B, being comprised of beam-forming subarrays in number of D each having the output antennas in number of B to form a downlink beam from the D-numbered output signals of the STBC encoder; and an STBC decoder restoring an original signal by dividing a signal, which is received as one with signals transmitted through a mobile antenna from the D-numbered beam-forming subarrays, into signals in number of D in accordance with the subarrays in consideration of channel characteristics.

Abstract translation: 提供了一种具有基于LPA的波束形成器的STBC收发系统，包括：具有D个分支的STBC编码器，用于产生用于输入信号的D数量的输出信号; 具有D * B数量的输出天线的波束形成器，由数量为D的输出天线的D个波束形成子阵列组成，以从STBC编码器的D编号的输出信号形成下行链路波束; 以及STBC解码器，通过将根据来自D编号的波束形成子阵列的通过移动天线发送的信号作为一个信号被分割成根据基于考虑到信道的子阵列的D数字的信号来恢复原始信号 特点

公开(公告)号：US20090130975A1

公开(公告)日：2009-05-21

申请号：US12282331

申请日：2007-03-29

Applicant: Ayako Horiuchi ,  Kenichi Miyoshi ,  Tomohiro Imai ,  Hiroaki Morino

Inventor： Ayako Horiuchi ,  Kenichi Miyoshi ,  Tomohiro Imai ,  Hiroaki Morino

IPC: H04B17/02

CPC classification number: H04B7/022 ,  H04B7/026 ,  H04B7/15592 ,  H04L1/0643 ,  H04L1/1887 ,  H04L2001/0097

Abstract: Provided is a mobile communication system capable of obtaining a diversity effect even when a signal received by a relay station has an error in a corporate relay to which time space encoding is applied. In this mobile communication system, when S1 has no error and S2 has an error, a relay station (1) does not perform relay transmission at time t (Null) and relay-transmits S1* to a base station at time t+T. That is, in this case, the relay station (1) relay-transmits at time t+T only S1 to be transmitted at time t when no error is contained in either S1 or S2. Moreover, when S1 has an error and S2 has no error, the relay station (1) relay-transmits S2 at time t and does not perform relay transmission at time t+T (Null). That is, in this case, the relay station (1) relay-transmits only S2 to be transmitted at time t+T at time t if no error is contained in either S1 or S2.

Abstract translation: 提供了即使当中继站接收的信号在应用了时间空间编码的公司中继中具有错误时，也能够获得分集效应的移动通信系统。 在该移动通信系统中，当S1没有错误且S2有错误时，中继站（1）在时刻t（Null）不执行中继传输，并且在时刻t + T向基站中继发送S1 *。 也就是说，在这种情况下，中继站（1）在时刻t + T仅中继 - 在S1或S2中不包含错误的情况下，在时间t发送要发送的S1。 此外，当S1发生错误且S2没有错误时，中继站（1）在时刻t中继发送S2，在时刻t + T（Null）不进行中继发送。 也就是说，在这种情况下，如果在S1或S2中没有包含错误，则中继站（1）在时间t仅中继仅发送在时间t + T发送的S2。

公开(公告)号：US20090076789A1

公开(公告)日：2009-03-19

申请号：US12274615

申请日：2008-11-20

Applicant: Juinn-Horng Deng ,  Jeng-Kuang Hwang ,  Po-Tien Lee ,  Fu-Chin Shau

Inventor： Juinn-Horng Deng ,  Jeng-Kuang Hwang ,  Po-Tien Lee ,  Fu-Chin Shau

IPC: G06F17/50

CPC classification number: H04L1/0643

Abstract: A pre-verifying method for software/hardware design of a communication system includes simulating a process of sending a data frame from a transmitter to a receiver with a transceiver algorithm meeting a preset specification for obtaining simulation parameters. A transmitter hardware platform sends the data frame via an antenna. A receiver hardware platform receives an echo signal of the data frame and compares each parameter of the echo signal with the simulation parameters. The comparison result of various parameters of the echo signal and the simulation parameters is verified to be in a desired range or not. When the comparison result is not in the desired range, the transceiver algorithm is adjusted. When the comparison result is in the desired range, the transceiver algorithm is converted to a hardware program language format to be written in a programmable module to perform the action of the transmitter and the receiver.

Abstract translation: 用于通信系统的软件/硬件设计的预验证方法包括模拟通过满足用于获得模拟参数的预设规范的收发器算法从发射机向接收机发送数据帧的过程。 发射机硬件平台通过天线发送数据帧。 接收机硬件平台接收数据帧的回波信号，并将回波信号的每个参数与仿真参数进行比较。 回波信号和模拟参数的各种参数的比较结果被验证在期望的范围内。 当比较结果不在期望的范围内时，调整收发器算法。 当比较结果在期望的范围内时，收发器算法被转换成硬件程序语言格式，以写入可编程模块以执行发射机和接收机的动作。

公开(公告)号：US20090017753A1

公开(公告)日：2009-01-15

申请号：US12172087

申请日：2008-07-11

Applicant: Sang G. Kim ,  Ki-Dong Lee ,  Byung K. Yi

Inventor： Sang G. Kim ,  Ki-Dong Lee ,  Byung K. Yi

IPC: H04B1/60

CPC classification number: H04B7/15592 ,  H04L1/0006 ,  H04L1/0643 ,  H04L1/0668 ,  H04L2001/0097

Abstract: A method for communicating data from a source to a destination using a plurality of relay stations in a wireless communication system is provided. The method comprises grouping the plurality of relay stations into at least one relay station group; receiving in a relay station group a subset of data transmitted from the source; sharing information between relay stations in the relay station group for forwarding to the destination the received subset of data transmitted from the source; determining a forwarding scheme for transmitting the received subset of data; and transmitting the received subset of data to the destination using the forwarding scheme.

Abstract translation: 提供了一种在无线通信系统中使用多个中继站从源向目的地传送数据的方法。 该方法包括将多个中继站分组成至少一个中继站组; 在中继站组中接收从源发送的数据的子集; 在所述中继站组中的中继站之间共享信息，以将从所述源发送的所接收的数据子集转发到所述目的地; 确定用于发送所接收的数据子集的转发方案; 以及使用转发方案将所接收的数据子集发送到目的地。

公开(公告)号：US07466759B2

公开(公告)日：2008-12-16

申请号：US11175430

申请日：2005-07-05

Applicant: Shashidhar Vummintala ,  Arogyaswami Paulraj ,  Erik David Lindskog ,  Balaji Sundar Rajan ,  Djordje Tujkovic

Inventor： Shashidhar Vummintala ,  Arogyaswami Paulraj ,  Erik David Lindskog ,  Balaji Sundar Rajan ,  Djordje Tujkovic

IPC: H04B7/02

CPC classification number: H04L1/0625 ,  H04L1/0071 ,  H04L1/0643

Abstract: The invention relates generally to the field of signal encoding in a multiple input multiple output system in a wireless communication network. This invention specifically relates to a method of encoding and transmitting symbols in a rate-2 complex symbol per second per Hertz transmission system that achieves a maximum diversity of four for a four transmit antenna system and a diversity of three on a three transmit antenna system. The invention discloses a method of interleaving the complex symbols such that each interleaved symbol comprises information of at least two complex symbols where the complex symbols obtain values from a rotated constellation.

Abstract translation: 本发明一般涉及无线通信网络中的多输入多输出系统中的信号编码领域。 本发明具体涉及以每Hertz传输系统每秒速率2复数符号编码和传输符号的方法，其对于四个发射天线系统实现四个最大分集，三个发射天线系统实现三分之一。 本发明公开了一种对复数符号进行交织的方法，使得每个交错符号包括复数符号从旋转星座获得值的至少两个复符号的信息。