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    System and method for frequency division multiple access communications
    1.
    发明授权
    System and method for frequency division multiple access communications 有权
    用于频分多址通信的系统和方法

    公开(公告)号：US08169994B2

    公开(公告)日：2012-05-01

    申请号：US11996463

    申请日：2006-07-27

    申请人： Jianglei Ma ,  Ming Jia ,  Wen Tong ,  Peiying Zhu ,  Hua Xu ,  Moussa Abdi ,  Evelyne LeStrat ,  Sarah Boumendil

    发明人： Jianglei Ma ,  Ming Jia ,  Wen Tong ,  Peiying Zhu ,  Hua Xu ,  Moussa Abdi ,  Evelyne LeStrat ,  Sarah Boumendil

    IPC分类号： H04B7/208

    CPC分类号： H04B7/2621 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0051

    摘要： A method and system for wireless frequency division multiple access communications in the uplink and/or downlink directions, having an improved pilot insertion scheme for single carrier based communications is provided. A first time duration for transmission of a data payload block (7) is established, and the transmission is processed using a first frequency domain or a time domain. A second time duration for transmission of at least one pilot block (70) is established, and the transmission is processed using a second frequency domain or the time domain, the second time duration (70) is not greater than the first time duration (7).

    摘要翻译： 提供了一种用于上行链路和/或下行链路方向上的无线频分多址通信的方法和系统，其具有用于基于单载波的通信的改进的导频插入方案。 建立用于发送数据有效载荷块（7）的第一时间段，并且使用第一频域或时域处理传输。 建立用于发送至少一个导频块（70）的第二持续时间，并且使用第二频域或时域处理该传输，第二持续时间（70）不大于第一持续时间（7） ）。

    Adaptive Transmission Systems and Methods
    4.
    发明申请
    Adaptive Transmission Systems and Methods 有权
    自适应传输系统和方法

    公开(公告)号：US20120188881A1

    公开(公告)日：2012-07-26

    申请号：US12226736

    申请日：2007-04-19

    申请人： Jianglei Ma ,  Ming Jia ,  Jianming Wu ,  Peiying Zhu ,  Wen Tong ,  Evelyne Le Strat ,  Sarah Boumendil ,  Moussa Abdi

    发明人： Jianglei Ma ,  Ming Jia ,  Jianming Wu ,  Peiying Zhu ,  Wen Tong ,  Evelyne Le Strat ,  Sarah Boumendil ,  Moussa Abdi

    IPC分类号： H04W24/00 ,  H04B7/04

    CPC分类号： H04B7/0689 ,  H04B7/0452 ,  H04B7/061 ,  H04B7/068 ,  H04B7/0697

    摘要： Abstract Spatial multiplexing and transmit diversity can improve the capacity of a wireless communication system. The system and method adapts communication schemes for communication systems with multiple antennas utilizing at least two transmission modes. The at least two transmission modes can, but are not necessarily, used for uplink communications. The two transmission modes may be chosen from the group consisting of a single antenna mode, a diversity mode a spatial multiplexed mode and a mixed diversity and spatial multiplexed mode. The at least two transmission modes may involve adaptation among multiple transmitters. At least one receiver may indicate a transmission mode to be used by a transmitter for a subsequent transmission. A transmitter may determine a transmission mode to be used for a subsequent transmission. The transmission mode can be based on channel sounding.

    摘要翻译： 摘要空间复用和发射分集可以提高无线通信系统的容量。 该系统和方法利用至少两种传输模式来适应具有多个天线的通信系统的通信方案。 至少两种传输模式可以但不一定用于上行链路通信。 两种传输模式可以从由单天线模式，分集模式，空间复用模式和混合分集和空间复用模式组成的组中选择。 至少两个传输模式可以涉及多个发射机之间的适配。 至少一个接收机可以指示要由发射机用于后续传输的传输模式。 发射机可以确定要用于后续传输的传输模式。 传输模式可以基于通道探测。

    Spread spectrum modulator and demodulator
    5.
    发明授权
    Spread spectrum modulator and demodulator 有权
    扩频调制器和解调器

    公开(公告)号：US08116353B2

    公开(公告)日：2012-02-14

    申请号：US12547541

    申请日：2009-08-26

    申请人： Hassan El Nahas El Homsi ,  Moussa Abdi ,  Alexandre Jard

    发明人： Hassan El Nahas El Homsi ,  Moussa Abdi ,  Alexandre Jard

    IPC分类号： H04B1/00

    CPC分类号： H04J13/0003 ,  H04B1/712 ,  H04B7/0678

    摘要： A spread spectrum modulator converts input sequences composed of digital symbols into n≧2 spread-spectrum sequences. The spread spectrum modulator can generate spreading code and can combine the spreading code with the input sequences to produce the n spread spectrum sequences for transmission from n respective antennas of a radio transmitter. Each spread spectrum sequence corresponds to a sum of at least two contributions mutually shifted by a time substantially less than the duration of a symbol, each contribution being the product of a version of one of the n input sequences times the spreading code.

    摘要翻译： 扩频调制器将由数字符号组成的输入序列转换为n≥2个扩频序列。 扩频调制器可以产生扩展码，并且可以将扩展码与输入序列组合，以产生用于从无线电发射机的n个相应天线发射的n个扩展频谱序列。 每个扩展频谱序列对应于至少两个相互移位的时间的和大于小于符号持续时间的时间的和，每个贡献是n个输入序列之一乘以扩展码的乘积的乘积。

    SPREAD SPECTRUM MODULATOR AND DEMODULATOR
    6.
    发明申请
    SPREAD SPECTRUM MODULATOR AND DEMODULATOR 有权
    传播光谱调制器和解调器

    公开(公告)号：US20100020853A1

    公开(公告)日：2010-01-28

    申请号：US12547541

    申请日：2009-08-26

    申请人： Hassan EL NAHAS EL HOMSI ,  Moussa ABDI ,  Alexandre JARD

    发明人： Hassan EL NAHAS EL HOMSI ,  Moussa ABDI ,  Alexandre JARD

    IPC分类号： H04B1/707

    CPC分类号： H04J13/0003 ,  H04B1/712 ,  H04B7/0678

    摘要： A spread spectrum modulator converts input sequences composed of digital symbols into n≧2 spread-spectrum sequences. The spread spectrum modulator can generate spreading code and can combine the spreading code with the input sequences to produce the n spread spectrum sequences for transmission from n respective antennas of a radio transmitter. Each spread spectrum sequence corresponds to a sum of at least two contributions mutually shifted by a time substantially less than the duration of a symbol, each contribution being the product of a version of one of the n input sequences times the spreading code.

    摘要翻译： 扩频调制器将由数字符号组成的输入序列转换成n≥2个扩频序列。 扩频调制器可以产生扩展码，并且可以将扩展码与输入序列组合，以产生用于从无线电发射机的n个相应天线发射的n个扩展频谱序列。 每个扩展频谱序列对应于至少两个相互移位的时间的和大于小于符号持续时间的时间的和，每个贡献是n个输入序列之一乘以扩展码的乘积的乘积。

    Pilot Scheme For A Mimo Communication System
    7.
    发明申请
    Pilot Scheme For A Mimo Communication System 有权
    Mimo通信系统试点计划

    公开(公告)号：US20080247479A1

    公开(公告)日：2008-10-09

    申请号：US12088589

    申请日：2006-09-29

    申请人： Jianglei Ma ,  Ming Jia ,  Hua Xu ,  Wen Tong ,  Peiying Zhu ,  Moussa Abdi

    发明人： Jianglei Ma ,  Ming Jia ,  Hua Xu ,  Wen Tong ,  Peiying Zhu ,  Moussa Abdi

    IPC分类号： H04L27/28

    CPC分类号： H04B7/0452 ,  H04B7/0413 ,  H04J13/18 ,  H04J2013/165 ,  H04L1/0625 ,  H04L5/001 ,  H04L5/0026 ,  H04L5/0032 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0051 ,  H04L25/0226 ,  H04L25/0228 ,  H04L27/2613 ,  H04W72/04 ,  H04W72/044 ,  H04W88/08

    摘要： The present invention employs a pilot scheme for frequency division multiple access (FDM) communication systems, such as single carrier FDM communication systems. A given transmit time interval will include numerous traffic symbols and two or more short pilot symbols, which are spaced apart from one another by at least one traffic symbol and will have a Fourier transform length that is less than the Fourier transform length of any given traffic symbol. Multiple transmitters will generate pilot information and modulate the pilot information onto sub-carriers of the short pilot symbols in an orthogonal manner. Each transmitter may use different sub-carriers within the time and frequency domain, which is encompassed by the short pilot symbols within the transmit time interval. Alternatively, each transmitter may uniquely encode the pilot information using a unique code division multiplexed code and modulate the encoded pilot information onto common sub-carriers of the short pilot symbols.

    摘要翻译： 本发明采用诸如单载波FDM通信系统的频分多址（FDM）通信系统的导频方案。 给定的传输时间间隔将包括许多业务符号和两个或更多个短导频符号，它们彼此间隔开至少一个业务符号，并且将具有小于任何给定业务的傅里叶变换长度的傅里叶变换长度 符号。 多个发射机将产生导频信息，并以正交方式将导频信息调制到短导频符号的子载波上。 每个发射机可以在时间和频域内使用不同的子载波，由发射时间间隔内的短导频符号包围。 或者，每个发射机可以使用唯一的码分多路复用码对导频信息进行唯一的编码，并将编码的导频信息调制到短导频符号的公共子载波上。

    Method of processing a signal by a radio receiver and radio receiver for the implementation of the method
    9.
    发明授权
    Method of processing a signal by a radio receiver and radio receiver for the implementation of the method 有权
    通过无线电接收机和无线电接收机处理信号的方法用于实现该方法

    公开(公告)号：US07613230B2

    公开(公告)日：2009-11-03

    申请号：US10807664

    申请日：2004-03-24

    申请人： Alexandre Jard ,  Moussa Abdi ,  Hassan El Nahas El Homsi ,  Jean-Marc Corbel

    发明人： Alexandre Jard ,  Moussa Abdi ,  Hassan El Nahas El Homsi ,  Jean-Marc Corbel

    IPC分类号： H04B1/00

    CPC分类号： H04B1/7113 ,  H04B1/7117

    摘要： In a spread spectrum digital radio communication receiver, a propagation profile of a propagation channel between a sender and the receiver, including at least one propagation path associated with a reception energy, is determined, data relating to an energy distribution in the propagation profile are measured, and information symbols carried by a signal received originating from the sender over the propagation channel are estimated, by applying to the signal a processing taking into account a predetermined maximum number of propagation paths, the propagation paths taken into account being chosen according to a criterion selected from several criteria as a function of the measured data relating to the energy distribution in the propagation profile.

    摘要翻译： 在扩频数字无线电通信接收机中，确定包括与接收能量相关联的至少一个传播路径的发送器和接收器之间的传播信道的传播概况，测量与传播分布中的能量分布有关的数据 ，并且通过在传播信道上从发送方发送的信号承载的信息符号通过将考虑到预定的最大传播路径数量的处理应用到信号来估计，考虑的传播路径根据标准被选择 从与传播分布中的能量分布相关的测量数据的函数中选择的几个标准。