公开(公告)号：US20050147182A1

公开(公告)日：2005-07-07

申请号：US10926710

申请日：2004-08-26

Applicant: Jae Lee ,  Soonsang Soh

Inventor： Jae Lee ,  Soonsang Soh

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

CPC classification number: H04L1/006 ,  H04B7/06 ,  H04L1/0625 ,  H04L1/065

Abstract: A method of differential unitary space-time modulation is provided by encoding messages to transmit through multiple transmitting antenna into multiple trellis code in a communication system wherein the signals are transmitted between multiple transmitting antennas and at least one receive antenna. The performance provided is superior to that of the modulation of the prior art.

Abstract translation: 差分单位空时调制的方法是通过编码消息，以在通信系统中通过多个发送天线发送到多个网格码，其中信号在多个发射天线与至少一个接收天线之间传输。 所提供的性能优于现有技术的调制性能。

公开(公告)号：US20050111347A1

公开(公告)日：2005-05-26

申请号：US10985566

申请日：2004-11-10

Applicant: Marco Breiling ,  Johannes Huber ,  Alexander Lampe ,  Ernst Eberlein

Inventor： Marco Breiling ,  Johannes Huber ,  Alexander Lampe ,  Ernst Eberlein

IPC: H03M13/27 ,  H03M13/45 ,  H04J99/00 ,  H04L1/00 ,  H04L1/02 ,  H04L1/06 ,  H04L12/56 ,  H04L25/02 ,  H04L25/03

CPC classification number: H04B7/0669 ,  H04L1/0048 ,  H04L1/0054 ,  H04L1/0071 ,  H04L1/02 ,  H04L1/0618 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/065 ,  H04L25/0204 ,  H04L25/0242 ,  H04L2025/03605

Abstract: In a transmitting/receiving concept a redundancy-adding encoder with a code rate larger or equal 0.5 is used in order to obtain two data streams for two different transmitters which are arranged at spatially different positions. Both transmitters transmit in the same frequency band. In the receiver, the receiving signal is sampled by a first sampler synchronous to the first transmitter and is output by a second sampler synchronous to the second transmitter in order to obtain a first and a second receiving signal which are fed to a trellis decoder in order to obtain a decoded first and second receiving subgroup of code units which are again fed to a calculating means in order to calculate the interference signals which are then combined with the corresponding receiving signals for an interference reduction. The iterative concept enables an interference reduction for receiving signal generated by two spatially separated transmitters which are transmitting in the same frequency band, however. The receiver concept shows a quick convergence and thus enables the two transmitters to transmit in the same frequency band, which results in a reduction of the required bandwidth by half compared to a corresponding transmitter concept in which the first and the second transmitters transmit at different frequencies.

Abstract translation: 在发送/接收概念中，使用码率大于或等于0.5的冗余加法编码器，以便获得布置在空间上不同位置的两个不同发射机的两个数据流。 两个发射机在相同的频带中发射。 在接收机中，接收信号由与第一发射机同步的第一采样器采样，并由与第二发射机同步的第二采样器输出，以获得第一和第二接收信号，以顺序馈送到网格解码器 以获得再次馈送到计算装置的解码的第一和第二接收码单元组，以便计算干扰信号，然后将其与相应的接收信号组合以进行干扰减少。 然而，迭代概念使得能够在由相同频带发射的两个空间分离的发射机产生的接收信号的干扰减少。 接收机概念表现出快速收敛，从而使得两个发射机能够在相同的频带中进行发射，这导致与其中第一和第二发射机以不同频率发射的相应发射机概念相比，所需带宽减少了一半 。

公开(公告)号：US06891897B1

公开(公告)日：2005-05-10

申请号：US09698797

申请日：2000-10-27

Applicant: Damian Bevan ,  Rudolf Tanner ,  Alex Grant

Inventor： Damian Bevan ,  Rudolf Tanner ,  Alex Grant

IPC: H04B1/707 ,  H04B7/06 ,  H04L1/00 ,  H04L1/06 ,  H04L25/02 ,  H04L25/03 ,  H04L5/12 ,  H04B1/66 ,  H04L1/02

CPC classification number: H04L1/0625 ,  H04B1/7105 ,  H04B7/0669 ,  H04L1/005 ,  H04L1/065 ,  H04L25/0204 ,  H04L25/0236 ,  H04L25/03292 ,  H04L25/03318

Abstract: The evolution of high rate data services within future wireless networks will call for new RF access technologies to enable substantial increases in overall system spectral efficiency at an acceptably low cost to the user. Space-Time Coding (STC) is an antenna array processing technology currently simulating considerable Interest across the wireless industry. The invention provides a space-time coding apparatus having an input, a trellis encoder, a modulator, a demultiplexer, and a set of signal outputs wherein the input is operable to receive a stream of data. This allows de-multiplexing to take place after coding and modulation has been performed. The trellis encoder comprises a convolutional encoder operable to sequentially group data to provide coded bits to provide QPSK symbols. By the selection of convolutional encoder rates and/or modulation alphabets STCs of any desired dimensionality may be produced including multi-dimensional codes.

Abstract translation: 未来无线网络中高速率数据业务的演进将需要新的射频接入技术，以便以可接受的低成本向用户大幅提升整个系统频谱效率。 时空编码（STC）是一种天线阵列处理技术，目前正在模拟无线行业的相当大的兴趣。 本发明提供一种具有输入，网格编码器，调制器，解复用器和一组信号输出的时空编码装置，其中输入可操作以接收数据流。 这允许在进行编码和调制之后进行解复用。 网格编码器包括卷积编码器，其可操作以顺序地分组数据以提供编码比特以提供QPSK符号。 通过选择卷积编码器速率和/或调制字母可以产生任何期望维度的STC，包括多维码。

公开(公告)号：US20040136465A1

公开(公告)日：2004-07-15

申请号：US10695493

申请日：2003-10-28

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Chan-Soo Hwang ,  Yung-Soo Kim ,  Seung-Hoon Nam ,  Jae-Hak Chung

IPC: H04L001/02 ,  H04B007/02

CPC classification number: H04L1/065 ,  H04L1/0069 ,  H04L1/0625 ,  H04L1/0631

Abstract: A mobile communication system includes at least three transmission antennas of first to third transmission antennas, and uses an overlapped antenna scheme for grouping the first and second transmission antennas into a first transmission antenna group and grouping the second and third transmission antennas into a second transmission antenna group. First and second modulators modulate L information bit streams to be transmitted through the first transmission antenna group and output first and second modulation symbol streams. Third and fourth modulators modulate L other information bit streams to be transmitted through the second transmission antenna group and output third and fourth symbol streams. First to fourth puncturers puncture at least one modulation symbol in a predetermined position among the first to fourth modulation symbol streams. A multiplexer transmits a modulation symbol stream output from the first puncturer through the first transmission antenna, transmits modulation symbol streams output from the second and third puncturers through the second transmission antenna after summation, and transmits a modulation symbol stream output from the third puncturer through the third transmission antenna.

Abstract translation: 移动通信系统包括第一至第三发射天线的至少三个发射天线，并且使用重叠的天线方案将第一和第二发射天线分组成第一发射天线组，并将第二和第三发射天线分组成第二发射天线 组。 第一和第二调制器调制通过第一发送天线组发送的L个信息比特流并输出第一和第二调制符号流。 第三和第四调制器调制通过第二发送天线组发送的另外的信息比特流并输出第三和第四符号流。 第一至第四穿孔器在第一至第四调制符号流中的预定位置中至少刺穿一个调制符号。 多路复用器通过第一发送天线发送从第一穿孔器输出的调制符号流，在求和之后通过第二发送天线发送从第二和第三穿孔器输出的调制符号流，并且从第三穿孔器输出的调制符号流通过 第三发射天线。

公开(公告)号：US20020090035A1

公开(公告)日：2002-07-11

申请号：US09985886

申请日：2001-11-06

Applicant: Broadcom Corporation

Inventor： Nambirajan Seshadri ,  Hamid Jafarkhani

IPC: H04L005/12

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.

Abstract translation: 一组超空间块码与集分割相结合，形成具有完全分集，增强的编码增益和改进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。 使用本发明的方法来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。