Apparatus and method for space-frequency block coding/decoding in a communication system
    93.
    发明申请
    Apparatus and method for space-frequency block coding/decoding in a communication system 有权
    在通信系统中用于空间频率块编码/解码的装置和方法

    公开(公告)号:US20050281350A1

    公开(公告)日:2005-12-22

    申请号:US11156689

    申请日:2005-06-20

    CPC分类号: H04B7/068

    摘要: An apparatus and method for SFBC coding and decoding in a communication system using a plurality of (N1) Tx antennas are provided. In a transmitter using Nt transmit antennas, a pre-coder pre-codes an input symbol sequence using a pre-coding matrix. The pre-coding matrix is produced by puncturing a unitary matrix in a predetermined method. An encoder generates a plurality of vectors by grouping the symbols of the pre-coded symbol sequence by twos, space-frequency maps each of the vectors by encoding each of the vectors in an Alamouti coding scheme, and provides each of the space-frequency mapped symbols to a predetermined OFDM modulator.

    摘要翻译: 提供了一种使用多个(N 1 1)个Tx天线的通信系统中的SFBC编码和解码的装置和方法。 在使用N T发射天线的发射机中,预编码器使用预编码矩阵对输入符号序列进行预编码。 预编码矩阵是通过以预定方法对单一矩阵进行打孔而产生的。 编码器通过对预编码符号序列的符号进行二进制分组来生成多个向量,通过以Alamouti编码方案对每个向量进行编码,对每个向量进行空间频率映射,并且提供每个空间频率映射 符号到预定的OFDM调制器。

    Method and system for transmitting and receiving data in a heterogeneous communication system
    95.
    发明授权
    Method and system for transmitting and receiving data in a heterogeneous communication system 有权
    用于在异构通信系统中发送和接收数据的方法和系统

    公开(公告)号:US08134971B2

    公开(公告)日:2012-03-13

    申请号:US12074306

    申请日:2008-03-03

    IPC分类号: H04W4/00

    CPC分类号: H04W36/0066

    摘要: A method and system for transmitting/receiving data in a heterogeneous communication system. A terminal accesses a first controller of a first communication system supporting a first communication service to make a communication path to the first communication system. After making the communication path to the terminal, the first controller determines whether it is possible to provide the first communication service to the terminal over the first communication system. If it is not possible, the first controller transmits to an interworking unit a first request indicating that the terminal requires the first communication service over the second communication system. The interworking unit transmits a second request to a second controller of the second communication system in response to the first request, the second request indicating that the second controller provides the first communication service to the terminal. Upon receiving a response to the second request, the interworking unit controls the first controller to provide the first communication service to the terminal over the second communication system according to the response.

    摘要翻译: 一种用于在异构通信系统中发送/接收数据的方法和系统。 终端访问支持第一通信服务的第一通信系统的第一控制器,以建立到第一通信系统的通信路径。 在向终端发送通信路径之后,第一控制器确定是否可以通过第一通信系统向终端提供第一通信服务。 如果不可能,则第一控制器向交互单元发送指示终端在第二通信系统上需要第一通信服务的第一请求。 交互单元响应于第一请求向第二通信系统的第二控制器发送第二请求,第二请求指示第二控制器向终端提供第一通信服务。 在接收到对第二请求的响应时,交互单元控制第一控制器,以根据响应通过第二通信系统向终端提供第一通信服务。

    Apparatus and method for detecting signal in a broadband wireless access system
    97.
    发明授权
    Apparatus and method for detecting signal in a broadband wireless access system 有权
    一种用于在宽带无线接入系统中检测信号的装置和方法

    公开(公告)号:US07953178B2

    公开(公告)日:2011-05-31

    申请号:US11800024

    申请日:2007-05-03

    IPC分类号: H04K1/02 H04L25/49

    摘要: An apparatus and method for signal detection in a Broadband Wireless Access (BWA) system are provided, in which in a transmitter, a first preamble sequence generator generates preamble sequences, a low-Peak-to-Average Power Ratio (PAPR) preamble sequence selector selects a first low-PAPR preamble sequence from among the generated preamble sequences, a preamble sequence copier copies the first low-PAPR preamble sequence at least once and outputs the first low-PAPR preamble sequence and the at least one copy, a complex conjugator generates preamble sequences orthogonal to the first low-PAPR preamble sequence and the at least one copy by calculating complex conjugates of the first low-PAPR preamble sequence and the at least one copy, and a second preamble sequence generator generates at least one second low-PAPR preamble sequence using the first low-PAPR preamble sequence.

    摘要翻译: 提供了一种在宽带无线接入(BWA)系统中用于信号检测的装置和方法,其中在发射机中,第一前同步码序列发生器产生前导码序列,低峰值到平均功率比(PAPR)前同步码序列选择器 从所生成的前导码序列中选择第一低PAPR前同步码序列,前同步码序列复制器至少复制第一低PAPR前同步码序列一次,并输出第一低PAPR前导序列和至少一个拷贝,复共轭产生 通过计算第一低PAPR前导码序列和至少一个副本的复共轭而与第一低PAPR前导码序列和至少一个拷贝正交的前导码序列,并且第二前导序列发生器产生至少一个第二低PAPR 使用第一低PAPR前导序列的前导码序列。

    Apparatus and method for feeding back information on channel state for scheduling in multiple antenna system
    98.
    发明授权
    Apparatus and method for feeding back information on channel state for scheduling in multiple antenna system 有权
    用于在多天线系统中反馈用于调度的信道状态信息的装置和方法

    公开(公告)号:US07876851B2

    公开(公告)日:2011-01-25

    申请号:US11714701

    申请日:2007-03-06

    IPC分类号: H04B7/02 H04L1/02

    摘要: An apparatus and method for controlling amount of information to be fed back in a multiple antenna system in a multi-user environment. The apparatus includes a channel estimator which estimates channel values by using an input signal; a Singular Value Decomposition (SVD) operator which decomposes singular values from the estimated channel values; and a feedback determining unit which uses the singular values to compute channel capacity that can be obtained according to the amount of channel information to be fed back, and selects the channel information to be fed back by using the channel capacity.

    摘要翻译: 一种用于在多用户环境中控制在多天线系统中反馈的信息量的装置和方法。 该装置包括通过使用输入信号来估计信道值的信道估计器; 奇异值分解(SVD)算子,其从估计的信道值分解奇异值; 以及反馈确定单元,其使用奇异值来计算可以根据要反馈的信道信息的量获得的信道容量,并且通过使用信道容量来选择要反馈的信道信息。

    System and method for allocating resources in a communication system
    99.
    发明申请
    System and method for allocating resources in a communication system 审中-公开
    用于在通信系统中分配资源的系统和方法

    公开(公告)号:US20080225789A1

    公开(公告)日:2008-09-18

    申请号:US12075874

    申请日:2008-03-14

    IPC分类号: H04Q7/00

    摘要: A method and system for allocating resources in a communication system including a first system having a use right for a plurality of frequency bands, and a second system having no use right for the plurality of frequency bands. The method includes acquiring first, second and third sensing informations indicating frequency bands available by a base station, a relay station and a mobile station belonging to the second system, among the plurality of frequency bands; and selecting a frequency band to be allocated for communications, based on the acquired sensing informations.

    摘要翻译: 一种用于在包括对多个频带具有使用权的第一系统的通信系统中分配资源的方法和系统,以及对于多个频带没有使用权的第二系统。 所述方法包括:在所述多个频带中获取指示属于所述第二系统的基站,中继站和移动站可用的频带的第一,第二和第三感测信息; 以及基于所获取的感测信息来选择要分配用于通信的频带。

    Transmitting and receiving apparatus and method in closed-loop MIMO antenna system using codebook
    100.
    发明申请
    Transmitting and receiving apparatus and method in closed-loop MIMO antenna system using codebook 审中-公开
    使用码本的闭环MIMO天线系统中的发射和接收装置和方法

    公开(公告)号:US20060279460A1

    公开(公告)日:2006-12-14

    申请号:US11448790

    申请日:2006-06-08

    IPC分类号: H01Q3/00

    摘要: A receiver and transmitter of a closed-loop MIMO antenna system using a codebook and a receiving and transmitting method thereof are provided. The receiver of the MIMO antenna system includes a window size decider and a beamforming weight selector. The window size decider stores a codebook with beamforming weights and selects the beamforming weights corresponding to a window size from the codebook, and the beamforming weight selector selects an optimal beamforming weight based on a current channel state among the beamforming weights outputted from the window size decider, and feeds back the selected optimal beamforming weight to a transmitter.

    摘要翻译: 提供了使用码本及其接收和发送方法的闭环MIMO天线系统的接收机和发射机。 MIMO天线系统的接收机包括窗口大小决定器和波束成形权重选择器。 窗口尺寸判定器存储具有波束成形权重的码本,并且从码本中选择对应于窗口大小的波束成形权重,并且波束成形权重选择器基于从窗口大小决定器输出的波束形成权重中的当前信道状态来选择最优波束成形权重 并将所选择的最佳波束成形权重反馈给发射机。