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    System and method for low complexity raptor codes for multimedia broadcast/multicast service
    51.
    发明申请
    System and method for low complexity raptor codes for multimedia broadcast/multicast service 失效
    用于多媒体广播/多播服务的低复杂度猛禽码的系统和方法

    公开(公告)号：US20100100791A1

    公开(公告)日：2010-04-22

    申请号：US12586864

    申请日：2009-09-29

    申请人： Shadi Abu-Surra ,  Farooq Khan ,  Jianzhong Zhang

    发明人： Shadi Abu-Surra ,  Farooq Khan ,  Jianzhong Zhang

    IPC分类号： H03M13/05 ,  G06F11/10

    CPC分类号： H03M13/3761 ,  H03M13/118 ,  H03M13/2906 ,  H03M13/293 ,  H03M13/373 ,  H03M13/6525 ,  H03M13/653 ,  H04L1/0042 ,  H04L1/0045 ,  H04L1/0057

    摘要： A system and method for encoding symbols in a wireless communication is provided. The system and method includes a transmitter configured to encode data transmissions. The transmitter includes a raptor encoder configured to perform a coding operation. The raptor encoder generates intermediate symbols without using a half-code such that the intermediate symbols consist of precoded symbols and parity symbols. Thereafter, the intermediate symbols are encoded using a Luby Transform to produce and output encoded symbols. The transmitter further is configured to transmit one or more of the source symbols, parity symbols or encoded symbols.

    摘要翻译： 提供了一种用于在无线通信中编码符号的系统和方法。 该系统和方法包括被配置为对数据传输进行编码的发射机。 发射机包括被配置为执行编码操作的猛禽编码器。 猛禽编码器生成中间符号而不使用半码，使得中间符号由预编码符号和奇偶校验符号组成。 此后，使用Luby变换对中间符号进行编码以产生并输出编码符号。 发射机还被配置为发送源符号，奇偶校验符号或编码符号中的一个或多个。

    Method and detector for a novel channel quality indicator for space-time encoded MIMO spread spectrum systems in frequency selective channels
    52.
    发明授权
    Method and detector for a novel channel quality indicator for space-time encoded MIMO spread spectrum systems in frequency selective channels 失效
    用于频率选择信道中时空编码MIMO扩频系统的新型信道质量指示符的方法和检测器

    公开(公告)号：US07606319B2

    公开(公告)日：2009-10-20

    申请号：US10892833

    申请日：2004-07-15

    申请人： Jianzhong Zhang ,  Balaji Raghothaman ,  Yan Wang ,  Giridhar Mandyam

    发明人： Jianzhong Zhang ,  Balaji Raghothaman ,  Yan Wang ,  Giridhar Mandyam

    IPC分类号： H04B7/02

    CPC分类号： H04L1/0656 ,  H04B1/7105 ,  H04B1/71055 ,  H04L1/0026 ,  H04L1/20 ,  H04L2025/03426 ,  H04L2025/03617

    摘要： In a JE, spread spectrum communication MIMO system where a demultiplexed packet is transmitted over multiple streams, two versions of a single CQI are disclosed: generalized SNR or constrained mutual information CMI between the transmitted and received chip vectors. In the receiver, the CMI is constrained so that filtering is suboptimal. The filter bank is preferably LMMSE or MVDR filters that convert the multi-path channel into a single path channel so that joint sequence detection is unnecessary. Detection is by a per-Walsh code architecture, wherein a plurality of Walsh-code specific detectors in parallel detect bits or symbols from the single-channel chips after downconverting chip to symbols. Link to system mapping is realizable using the disclosed CQI for a JE MIMO system in that the CQI or related information is returned to the transmitter, which adapts coding rate and/or modulation for the channel as represented by the CQI.

    摘要翻译： 在扩频通信MIMO系统中，通过多个流传输解复用分组的扩频通信MIMO系统，公开了单个CQI的两个版本：发送和接收的码片向量之间的广义SNR或受限互相信息CMI。 在接收机中，CMI被约束，使得过滤不是最佳的。 滤波器组优选地将多路径信道转换成单路径信道的LMMSE或MVDR滤波器，使得不需要联合序列检测。 检测是通过沃尔什码结构进行的，其中多个沃尔什码专用检测器在将芯片下变频到符号之后并行地检测来自单通道芯片的位或符号。 使用所公开的用于JE MIMO系统的CQI可实现与系统映射的链接，因为CQI或相关信息被返回给发射机，其适配由CQI表示的信道的编码率和/或调制。

    System and method for the placement of rank information in a physical uplink shared channel
    53.
    发明申请
    System and method for the placement of rank information in a physical uplink shared channel 有权
    用于在物理上行链路共享信道中放置秩信息的系统和方法

    公开(公告)号：US20090245170A1

    公开(公告)日：2009-10-01

    申请号：US12287413

    申请日：2008-10-09

    申请人： Jianzhong Zhang ,  Joonyoung Cho

    发明人： Jianzhong Zhang ,  Joonyoung Cho

    IPC分类号： H04W84/00 ,  H04J11/00

    CPC分类号： H04L5/0053

    摘要： A wireless communication network comprising a plurality of base stations capable of wireless communication with a plurality of subscriber stations within a coverage area of the network, wherein at least one of the plurality of base stations is capable of selecting two or more orthogonal frequency-division multiplexing (OFDM) symbols in a subframe of a physical uplink shared channel, the two or more OFDM symbols are selected starting from the bottom of the physical uplink shared channel in a bottom-up manner, and repeating one or more rank information (RI) coded bits in each of the selected two or more OFDM symbols.

    摘要翻译： 一种无线通信网络，包括能够与所述网络的覆盖区域内的多个用户站进行无线通信的多个基站，其中所述多个基站中的至少一个能够选择两个或更多个正交频分复用 （OFDM）符号，从物理上行链路共享信道的底部以自下而上的方式选择两个以上的OFDM符号，并且重复一个或多个编码的等级信息（RI） 所选择的两个或更多个OFDM符号中的每一个中的位。

    METHOD FOR SIGNALING A MODULATION SCHEME TO USER EQUIPMENT IN A COMMUNICATION SYSTEM
    54.
    发明申请
    METHOD FOR SIGNALING A MODULATION SCHEME TO USER EQUIPMENT IN A COMMUNICATION SYSTEM 有权
    用于在通信系统中对用户设备进行调制方案的信号的方法

    公开(公告)号：US20090196260A1

    公开(公告)日：2009-08-06

    申请号：US12024159

    申请日：2008-02-01

    申请人： Kenneth A. Stewart ,  Raja S. Bachu ,  Jianzhong Zhang

    发明人： Kenneth A. Stewart ,  Raja S. Bachu ,  Jianzhong Zhang

    IPC分类号： H04B7/216 ,  H04L27/00 ,  H04L27/36

    CPC分类号： H04L27/0008 ,  H04L1/0003 ,  H04L1/0025 ,  H04L1/0072 ,  H04L1/1819 ,  H04L27/0012 ,  H04L27/34

    摘要： A method signals a modulation scheme to user equipment on a control channel in a communication system. The method includes encoding the modulation scheme on a modulation specifier and encoding a number of channelization codes on a code group indicator. When the modulation scheme is other than quadrature phase shift keying with the user equipment being configured to support 64-quadrature amplitude modulation (64-QAM), then set the modulation specifier to indicate that the applied modulation scheme is other than QPSK, encode a code offset on a code offset indicator, and set one bit of the code offset indicator to indicate that the applied modulation scheme is 64-QAM. Finally, the method includes transmitting the modulation specifier, the code group indicator, and the code offset indicator on the control channel to the user equipment.

    摘要翻译： 一种方法是将调制方式发送给通信系统中的控制信道上的用户设备。 该方法包括在调制说明符上对调制方案进行编码，并对码组指示符上的多个信道化码进行编码。 当调制方案不同于正交相移键控，其中用户设备被配置为支持64-正交幅度调制（64-QAM），则设置调制指示符以指示所施加的调制方案不是QPSK，对码进行编码 在码偏移指示符上偏移，并设置码偏移指示符的一位，以指示所应用的调制方案为64-QAM。 最后，该方法包括在控制信道上向用户设备发送调制指示符，代码组指示符和代码偏移指示符。

    Reduced parallel and pipelined high-order MIMO LMMSE receiver architecture
    57.
    发明授权
    Reduced parallel and pipelined high-order MIMO LMMSE receiver architecture 有权
    降低并行和流水线高阶MIMO LMMSE接收机架构

    公开(公告)号：US07492815B2

    公开(公告)日：2009-02-17

    申请号：US10997397

    申请日：2004-11-24

    申请人： Yuanbin Guo ,  Jianzhong Zhang ,  Dennis McCain ,  Joseph R. Cavallaro

    发明人： Yuanbin Guo ,  Jianzhong Zhang ,  Dennis McCain ,  Joseph R. Cavallaro

    IPC分类号： H04B1/707 ,  H03H7/30

    CPC分类号： H04L25/03038 ,  H04B1/71055 ,  H04L25/0204 ,  H04L25/021 ,  H04L25/0242 ,  H04L25/0328 ,  H04L2025/03375 ,  H04L2025/03426 ,  H04L2025/03477 ,  H04L2025/03605

    摘要： Disclosed is a LMMSE receiver that restores orthogonality of spreading codes in the downlink channel for a spread spectrum signal received over N receive antennas. The FFT-based chip equalizer tap solver reduces the direct matrix inverse of the prior art to the inverse of some submatrices of size N×N with the dimension of the receive antennas, and most efficiently reduces matrix inverses to no larger than 2×2. Complexity is further reduced over a conventional Fast Fourier Transform approach by Hermitian optimization to the inverse of submatrices and tree pruning. For a receiver with N=4 or N=2 with double oversampling, the resulting 4×4 matrices are partitioned into 2×2 block sub-matrices, inverted, and rebuilt into a 4×4 matrix. Common computations are found and repeated computations are eliminated to improve efficiency. Generic design architecture is derived from the special design blocks to eliminate redundancies in complex operations. Optimally, the architecture is parallel and pipelined.

    摘要翻译： 公开了一种用于在N个接收天线上接收的扩频信号的下行链路信道中恢复扩频码的正交性的LMMSE接收机。 基于FFT的码片均衡器抽头解算器将现有技术的直接矩阵逆减少为具有接收天线的尺寸的尺寸为N×N的一些子矩阵的倒数，并且最有效地将矩阵反转减小到不大于2×2。 通过Hermitian优化，传统的快速傅立叶变换方法，复杂度进一步降低到子矩阵和树剪枝的倒数。 对于具有N = 4或N = 2的具有双重过采样的接收机，所得到的4×4矩阵被划分为2x2块子矩阵，被反转并重建为4×4矩阵。 发现常规计算，消除重复计算以提高效率。 通用设计架构源于特殊的设计模块，以消除复杂操作中的冗余。 最佳的架构是并行和流水线的。

    METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING COMMON CONTROL CHANNELS IN A MOBILE COMMUNICATION SYSTEM
    58.
    发明申请
    METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING COMMON CONTROL CHANNELS IN A MOBILE COMMUNICATION SYSTEM 有权
    在移动通信系统中传输和接收通用控制信道的方法和装置

    公开(公告)号：US20090003473A1

    公开(公告)日：2009-01-01

    申请号：US12137787

    申请日：2008-06-12

    申请人： Joon-Young CHO ,  Ying-Yang Li ,  Jianzhong Zhang ,  Ju-Ho Lee ,  Hwan-Joon Kwon

    发明人： Joon-Young CHO ,  Ying-Yang Li ,  Jianzhong Zhang ,  Ju-Ho Lee ,  Hwan-Joon Kwon

    IPC分类号： H04L27/28

    CPC分类号： H04L1/0042 ,  H04L1/0067 ,  H04L5/0007 ,  H04L27/2613 ,  H04L27/2626 ,  H04L27/2647

    摘要： A method and apparatus for transmitting and receiving a common control channel in an Orthogonal Frequency Division Multiplexing (OFDM) mobile communication system. In the transmission apparatus, when a plurality of bursts are transmitted during a Transmission Time Interval (TTI) of the common control channel, an Inverse Fast Fourier Transform (IFFT) mapper generates bursts that are shifted in a frequency domain by applying a predetermined cyclic shift offset between the bursts, and maps the generated bursts in a resource block. A transmission unit transmits the bursts to a receiver. In the reception apparatus, a reception unit receives a burst, and a combining unit combines the received burst with a burst stored in a buffer. A decoder decodes each of the combined bursts, and upon a successful decoding, detects a TTI start timing of the common control channel from the successfully decoded burst.

    摘要翻译： 一种用于在正交频分复用（OFDM）移动通信系统中发送和接收公共控制信道的方法和装置。 在发送装置中，当在公共控制信道的传输时间间隔（TTI）期间发送多个突发时，快速傅立叶逆变换（IFFT）映射器通过应用预定的循环移位产生在频域中移位的突发 在突发之间进行偏移，并且将生成的突发映射到资源块中。 发送单元将突发发送到接收机。 在接收装置中，接收单元接收突发，并且合成单元将接收到的突发与存储在缓冲器中的突发相组合。 解码器解码每个组合突发，并且在成功解码时，从成功解码的突发中检测公共控制信道的TTI开始定时。