Space time encoded wireless communication system with multipath resolution receivers
    61.
    发明授权
    Space time encoded wireless communication system with multipath resolution receivers 有权
    具有多路分辨率接收机的时空编码无线通信系统

    公开(公告)号:US07386076B2

    公开(公告)日:2008-06-10

    申请号:US10107275

    申请日:2002-03-26

    IPC分类号: H04B7/10 H04L1/02

    摘要: A wireless receiver (301) for receiving multiple space time encoded signals from a plurality of transmit antenna sets (TAT1 through TAT2, and TAT3 through TAT4), wherein the multiple space time encoded signals comprise a set of symbols and wherein each transmit antenna set is coupled to a corresponding encoder (221, 222) at a single transmitter (121). The receiver comprises a plurality of receive antennas (RAT1 through RATQ) and collection circuitry (32), coupled to the plurality of receive antennas, for collecting a plurality of signal samples for a plurality of successive time instances and from each of the plurality of receive antennas. The collected samples comprise samples of multipaths of the space time encoded signals. The receiver also comprises circuitry (34, 36), coupled to the plurality of receive antennas, for determining a linear time invariant multiple-input multiple-output matrix in response to pilot values in the received multiple space time encoded signals. Finally, the receiver comprise circuitry (40, 421, 441) for estimating at least selected ones of the symbols in response to the signal samples and the linear time invariant multiple-input multiple-output matrix.

    摘要翻译: 用于从多个发射天线组(TAT 1至TAT 2 2)接收多个空时编码信号的无线接收机(30 1)和 其中多个时空编码信号包括一组符号,并且其中每个发射天线组耦合到相应的编码器(22),其中, 1,12 2,2)在单个发射器(12 1 1)处。 接收机包括耦合到多个接收天线的多个接收天线(RAT 1至RAT 1)和收集电路(32),用于收集多个信号 用于多个连续时间实例和来自多个接收天线中的每一个的样本。 收集的样本包括空时编码信号的多路径样本。 接收机还包括耦合到多个接收天线的电路(34,36),用于响应于所接收的多个时空编码信号中的导频值来确定线性时间不变的多输入多输出矩阵。 最后,接收机包括用于响应于信号样本和线性时间不变倍数来估计符号中的至少一个选择符号的电路(40,42,...,44) 输入多输出矩阵。

    Low Complexity Design of Primary Synchronization Sequence for OFDMA
    62.
    发明申请
    Low Complexity Design of Primary Synchronization Sequence for OFDMA 有权
    OFDMA的主要同步序列的低复杂度设计

    公开(公告)号:US20080031186A1

    公开(公告)日:2008-02-07

    申请号:US11835244

    申请日:2007-08-07

    IPC分类号: H04L7/00 H04Q7/00

    CPC分类号: H04W72/1284 H04J11/0073

    摘要: The present disclosure provides a base station transmitter, a user equipment receiver and methods of operating a base station transmitter and a user equipment receiver. In one embodiment, the base station transmitter is for use with a cellular communication system and includes a scheduling unit configured to provide a primary synchronization sequence that is distinguishable from other primary synchronization sequences employed by adjacent base station transmitters located in contiguous communication cells, wherein a primary synchronization sequence structure is based on a reduced computational complexity for identification of the primary synchronization sequence in a user equipment receiver. Additionally, the base station transmitter also includes a transmit unit configured to transmit a primary synchronization signal corresponding to the primary synchronization sequence.

    摘要翻译: 本公开提供了一种基站发射机,用户设备接收机和操作基站发射机和用户设备接收机的方法。 在一个实施例中,基站发射机用于蜂窝通信系统,并且包括调度单元,其被配置为提供可与位于相邻通信小区中的相邻基站发射机所采用的其他主同步序列区分开的主同步序列,其中, 主同步序列结构基于用于在用户设备接收机中识别主同步序列的降低的计算复杂度。 此外,基站发射机还包括被配置为发送对应于主同步序列的主同步信号的发射单元。

    Wireless system with hybrid automatic retransmission request in interference-limited communications
    64.
    发明授权
    Wireless system with hybrid automatic retransmission request in interference-limited communications 有权
    具有混合自动重传请求的无线系统在受干扰有限的通信中

    公开(公告)号:US07295624B2

    公开(公告)日:2007-11-13

    申请号:US10260761

    申请日:2002-09-30

    IPC分类号: H04B7/02

    摘要: A wireless receiver for receiving signals from an interference-limited transmitter in an interference-limited system comprising at least one transmit antenna, wherein the signals comprise a plurality of symbols. The receiver comprises a plurality of receive antennas and collection circuitry for collecting a plurality of signal samples with at least one symbol and interference effects. The receiver also comprises suppression circuitry, accumulation circuitry, circuitry for providing estimates of a group of bits, error detection circuitry and circuitry for requesting the transmitter to transmit a retransmission of a packet in response to detecting an error.

    摘要翻译: 一种无线接收机,用于在受干扰限制的系统中接收来自干扰限制发射机的信号,包括至少一个发射天线,其中所述信号包括多个符号。 接收机包括多个接收天线和收集电路,用于收集具有至少一个符号和干扰效应的多个信号样本。 接收机还包括抑制电路,累积电路,用于提供一组比特的估计的电路,错误检测电路和用于响应于检测到错误而请求发送器发送分组的重传的电路。

    MIMO system with spatial diversity
    65.
    发明申请
    MIMO system with spatial diversity 审中-公开
    具有空间分集的MIMO系统

    公开(公告)号:US20070183533A1

    公开(公告)日:2007-08-09

    申请号:US11704495

    申请日:2007-02-08

    IPC分类号: H04L27/00 H04L1/02

    摘要: A method of transmitting a wireless signal (FIGS. 2 and 3A) is disclosed. A data stream (DATA) is received at a first transmitter (210). The data stream is also received by a second transmitter (214) that is remote from the first transmitter. The first transmitter (210) transmits a first part (S1) of the data stream to a remote receiver (220). The second transmitter (214) transmits a second part (S2) of the data stream to the remote receiver (220). The second transmitter (214) is remote from the first transmitter (210).

    摘要翻译: 公开了发送无线信号的方法(图2和图3A)。 数据流(DATA)在第一发射机(210)被接收。 数据流还由远离第一发射机的第二发射机(214)接收。 第一发射机(210)将数据流的第一部分(S1)发送到远程接收机(220)。 第二发射机(214)将数据流的第二部分(S 2)发送到远程接收机(220)。 第二发射机(214)远离第一发射机(210)。

    Multi-path interference cancellation for transmit diversity
    66.
    发明授权
    Multi-path interference cancellation for transmit diversity 有权
    用于发射分集的多径干扰消除

    公开(公告)号:US07218692B2

    公开(公告)日:2007-05-15

    申请号:US10172843

    申请日:2002-06-17

    IPC分类号: H03D1/04

    CPC分类号: H04L1/0668 H04B7/0669

    摘要: The present invention provides an apparatus, system and method for removal of interference due to multi-path for multiple transmit antennas (hereinafter referred to as MTA-MPIC) for High Speed Downlink Packet Access (HSDPA) encoded for transmit diversity, such as Space-Time Transmit Diversity (STTD). For a single receive antenna, the signal is received (25) and each multi-path delayed signal is demodulated (21). The demodulation can include long code removal and despreading. Subsequently, each demodulated signal is received by the RAKE receiver (22) for determining the channel estimate and channel normalization for the total HSDPA signal, and for computing space-time decoding for the HSDPA signal. Following the space-time decoding, a data decision is made (23). Next, reconstructed interference signals are generated (24) and combined with the received signal (25). For other user signals, an interference estimate is made from the despreader (322) outputs without applying the RAKE/space-time coding operations.

    摘要翻译: 本发明提供一种用于消除针对用于发射分集编码的高速下行链路分组接入(HSDPA)的多个发射天线(以下称为MTA-MPIC)的多路径干扰的装置,系统和方法, 时间发射分集(STTD)。 对于单个接收天线,接收信号(25),并且每个多径延迟信号被解调(21)。 解调可以包括长码去除和解扩。 随后,RAKE接收机(22)接收每个解调信号,用于确定总HSDPA信号的信道估计和信道标准化,并用于计算HSDPA信号的时空解码。 在空时解码之后,进行数据判定(23)。 接下来,生成重构的干扰信号(24)并与接收信号(25)组合。 对于其他用户信号,在不应用RAKE /空时编码操作的情况下,从解扩器(322)输出进行干扰估计。

    Code division multiple access wireless system with time reversed space time block transmitter diversity
    67.
    发明授权
    Code division multiple access wireless system with time reversed space time block transmitter diversity 有权
    码分多址无线系统具有时间反转空间时间块发射机多样性

    公开(公告)号:US07154958B2

    公开(公告)日:2006-12-26

    申请号:US09885878

    申请日:2001-06-20

    IPC分类号: H04B7/06

    摘要: A wireless communication network (10) includes a wireless transmitter having a plurality of antennas (AT11, AT12). The transmitter includes for each of a plurality of different user channels (Dn), circuitry (22n) for providing a plurality of groups of symbols in a first symbol group sequence (D1n). Each of the plurality of different user channels includes circuitry (241n) for forming a first modulated symbol group sequence for the user channel by modulating the symbols in the first symbol group sequence with a unique code that corresponds to the user channel and distinguishes the user channel from each other of the plurality of different user channels and circuitry (261) for combining the first modulated symbol group sequences for transmission by a first antenna (AT11). Each of the plurality of different user channels includes circuitry (22n) for forming a second symbol group sequence (D2n) by time reversing symbols in at least some of the groups of symbols.

    摘要翻译: 无线通信网络(10)包括具有多个天线(AT 1> 1,AT 1 2 N 2)的无线发射机。 发射机包括用于多个不同用户信道(D S)中的每一个,用于在第一符号组序列中提供多个符号组的电路(22) (D n> n)。 多个不同用户信道中的每一个包括用于通过调制第一符号组中的符号来形成用于用户信道的第一调制符号组序列的电路(24< n0> n) 序列,其具有对应于用户信道的唯一代码,并且将用户信道与多个不同用户信道中的用户信道和电路(26 1)进行区分,用于组合用于传输的第一调制符号组序列 第一天线(AT 1 1 1)。 多个不同的用户信道中的每一个包括用于通过时间反转来形成第二符号组序列(D 2> n )的电路(22 ) 符号中的至少一些符号组。

    Secondary synchronization signal mapping
    70.
    发明授权
    Secondary synchronization signal mapping 有权
    二次同步信号映射

    公开(公告)号:US09025586B2

    公开(公告)日:2015-05-05

    申请号:US12234362

    申请日:2008-09-19

    IPC分类号: H04J3/06 H04L27/26 H04L5/00

    摘要: Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter or a receiver. In one embodiment, the transmitter is for use with a base station and includes a primary module configured to provide a primary synchronization signal. The transmitter also includes a secondary mapping module configured to provide a secondary synchronization signal derived from two sequences taken from a same set of N sequences and indexed by an index pair (S1, S2) with S1 and S2 ranging from zero to N−1, wherein the index pair (S1, S2) is contained in a mapped set of index pairs corresponding to the same set of N sequences that defines a cell identity group. Additionally, the transmitter further includes a transmit module configured to transmit the primary and secondary synchronization signals.

    摘要翻译: 本公开的实施例提供发射机,接收机和操作发射机或接收机的方法。 在一个实施例中,发射机用于与基站一起使用,并且包括被配置为提供主同步信号的主模块。 发射机还包括辅助映射模块,该辅助映射模块被配置为提供从两个序列获得的次同步信号,该两个序列取自相同的N个序列集,并由索引对(S1,S2)索引,其中S1和S2的范围从零到N-1, 其中所述索引对(S1,S2)被包含在对应于定义单元标识组的相同的N个序列集合的映射的索引组集合中。 另外,发射机还包括被配置为发送主要和次要同步信号的发射模块。