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    Method for processing digital symbols in a communication system and transmitter and receiver for carrying out the method
    1.
    发明授权
    Method for processing digital symbols in a communication system and transmitter and receiver for carrying out the method 失效
    用于在通信系统中处理数字符号的方法以及用于执行该方法的发射机和接收机

    公开(公告)号：US07330482B2

    公开(公告)日：2008-02-12

    申请号：US10327799

    申请日：2002-12-23

    申请人： Sarah Boumendil ,  Evelyne Le Strat ,  Bastien Massie

    发明人： Sarah Boumendil ,  Evelyne Le Strat ,  Bastien Massie

    IPC分类号： H04L12/43

    CPC分类号： H03M13/2796 ,  H03M13/2714

    摘要： The digital symbols of a sequence are assigned to respective positions in successive timeslots, according to a predetermined slot format. In a plurality of timeslots, a symbol of the sequence is replaced by a substitution symbol carrying additional information. A signal representing the sequence of symbols, which is divided into the timeslots, is transmitted on a communication channel. The production of the sequence includes an interleaving having an interleaving period longer than a timeslot, generally performed after a channel coding. The position of the substitution symbols in the timeslots which include them is varied, in order to optimize the performances of the transmission chain.

    摘要翻译： 根据预定的时隙格式，将序列的数字符号分配给连续时隙中的相应位置。 在多个时隙中，序列的符号由携带附加信息的替换符号代替。 在通信信道上发送代表划分为时隙的符号序列的信号。 序列的产生包括具有比时隙更长的交织周期的交织，通常在信道编码之后执行。 在包括它们的时隙中的替换符号的位置是变化的，以便优化传输链的性能。

    Adaptive Transmission Systems and Methods
    3.
    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。

    Methods and systems to mitigate inter-cell interference
    4.
    发明申请
    Methods and systems to mitigate inter-cell interference 有权
    缓解细胞间干扰的方法和系统

    公开(公告)号：US20090245197A1

    公开(公告)日：2009-10-01

    申请号：US11990868

    申请日：2006-08-23

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

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

    IPC分类号： H04W72/04

    CPC分类号： H04L5/0073 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0032 ,  H04L5/0046 ,  H04L5/0048 ,  H04L5/0057 ,  H04L5/0062 ,  H04W16/02 ,  H04W16/12

    摘要： The present invention provides methods and devices for mitigating inter-cell interference in communication environments having a plurality of cells. In some embodiments, a time-frequency transmission resource that includes multiple sub-carriers over multiple OFDM symbol intervals is partitioned into a first zone and a second zone. In the first zone, transmissions are transmitted on at least one frequency sub-band which is common to all of the plurality of cells. In the second zone, transmissions are transmitted on at least one frequency sub-band which is used by less than all of the plurality of cells, so as to mitigate inter-cell interference. In some embodiments, in the first zone transmissions are transmitted using a transmission power which is common to all of the plurality of cells and in the second zone transmissions are transmitted using a transmission power which is used by less than all of the plurality of cells so as to mitigate inter-cell interference.

    摘要翻译： 本发明提供了用于减轻具有多个小区的通信环境中的小区间干扰的方法和装置。 在一些实施例中，包括多个OFDM符号间隔上的多个子载波的时间 - 频率传输资源被划分为第一区域和第二区域。 在第一区域中，在所有多个小区共同的至少一个频率子带上传输传输。 在第二区域中，传输在由少于所有多个小区使用的至少一个频率子带上发送，以便减轻小区间干扰。 在一些实施例中，在第一区域中，使用对于所有多个小区是公共的传输功率传输传输，并且在第二区域中，传输使用小于所有多个小区使用的传输功率来传输 以减轻细胞间干扰。

    Preamble using Golay sequence for access channel in cellular communications systems
    5.
    发明授权
    Preamble using Golay sequence for access channel in cellular communications systems 有权
    使用Golay序列的前导码在蜂窝通信系统中的接入信道

    公开(公告)号：US06839876B1

    公开(公告)日：2005-01-04

    申请号：US09611968

    申请日：2000-07-06

    申请人： Wen Tong ,  Bastien Massie ,  Etienne Bouet ,  Evelyne Le Strat

    发明人： Wen Tong ,  Bastien Massie ,  Etienne Bouet ,  Evelyne Le Strat

    IPC分类号： H04B1/707 ,  H04J13/00 ,  H04J13/10 ,  H03M13/00

    CPC分类号： H04J13/107 ,  H04B2201/70701 ,  H04J13/0014

    摘要： A preamble for a reverse access channel (RACH) of a CDMA (code division multiple access) communications system comprises a pair of constituent Golay sequences A and B concatenated with at least one pair, and preferably a plurality of different pairs, of transformed sequences which are also constituent Golay sequences, each pair of transformed sequences comprising a permutation of elements of the pair of sequences A and B. The permutations can include a reversed order of elements in the sequences, a reversed order of some or all of a set of address bits identifying locations of elements in the sequences, a concatenation of subsets of elements in odd and even locations of the sequences A and B, and combinations of these permutations. A method for providing the preamble, and related apparatus using a bidirectional counter and an address permutation unit, are described.

    摘要翻译： CDMA（码分多址）通信系统的反向接入信道（RACH）的前同步码包括一对组合的Golay序列A和B，其连接有至少一对，优选多个不同的转换序列对，其中， 也是组成Golay序列，每对变换序列包括一对序列A和B的元素的置换。排列可以包括序列中元素的相反顺序，一组或全部地址的相反顺序 识别序列中元素的位的比特，序列A和B的奇数和偶数位置中的元素子集的级联，以及这些排列的组合。 描述用于提供前导码的方法以及使用双向计数器和地址置换单元的相关装置。

    System and Method for Frequency Division Multiple Access Communications
    7.
    发明申请
    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：US20080219235A1

    公开(公告)日：2008-09-11

    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 Le Strat ,  Sarah Boumendil

    发明人： Jianglei Ma ,  Ming Jia ,  Wen Tong ,  Peiying Zhu ,  Hua Xu ,  Moussa Abdi ,  Evelyne Le Strat ,  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） ）。