8-Transmit antenna reference signal design for downlink communications in a wireless system
    1.
    发明申请
    8-Transmit antenna reference signal design for downlink communications in a wireless system 有权
    8 - 无线系统中下行链路通信的发射天线参考信号设计

    公开(公告)号:US20100104034A1

    公开(公告)日:2010-04-29

    申请号:US12587164

    申请日:2009-10-02

    IPC分类号: H04L27/28

    摘要: Systems and methods are disclosed for mapping reference signals for antenna ports in a plurality of resource blocks among resource blocks in a subframe within an orthogonal frequency division multiplexing (OFDM) communication system. This method includes selecting at least one predetermined resource elements for transmitting in the plurality of resource blocks using a first number of antenna ports. This method also includes selecting a second number of antenna ports and mapping a plurality of reference signals relating to the second number of antenna ports using a second number of OFDM symbols.

    摘要翻译: 公开了用于映射正交频分复用(OFDM)通信系统内的子帧中的资源块中的多个资源块中的天线端口的参考信号的系统和方法。 该方法包括使用第一数量的天线端口来选择用于在多个资源块中发送的至少一个预定资源元素。 该方法还包括选择第二数量的天线端口,并且使用第二数量的OFDM符号来映射与第二数量的天线端口相关的多个参考信号。

    8-transmit antenna reference signal design for downlink communications in a wireless system
    2.
    发明授权
    8-transmit antenna reference signal design for downlink communications in a wireless system 有权
    8发射天线参考信号设计,用于无线系统中的下行链路通信

    公开(公告)号:US08340199B2

    公开(公告)日:2012-12-25

    申请号:US12587164

    申请日:2009-10-02

    IPC分类号: H04L27/28 H04B7/02

    摘要: Systems and methods are disclosed for mapping reference signals for antenna ports in a plurality of resource blocks among resource blocks in a subframe within an orthogonal frequency division multiplexing (OFDM) communication system. This method includes selecting at least one predetermined resource elements for transmitting in the plurality of resource blocks using a first number of antenna ports. This method also includes selecting a second number of antenna ports and mapping a plurality of reference signals relating to the second number of antenna ports using a second number of OFDM symbols.

    摘要翻译: 公开了用于映射正交频分复用(OFDM)通信系统内的子帧中的资源块中的多个资源块中的天线端口的参考信号的系统和方法。 该方法包括使用第一数量的天线端口来选择用于在多个资源块中发送的至少一个预定资源元素。 该方法还包括选择第二数量的天线端口,并且使用第二数量的OFDM符号来映射与第二数量的天线端口相关的多个参考信号。

    METHOD AND SYSTEM FOR REFERENCE SIGNAL PATTERN DESIGN
    3.
    发明申请
    METHOD AND SYSTEM FOR REFERENCE SIGNAL PATTERN DESIGN 失效
    参考信号图案设计方法与系统

    公开(公告)号:US20100135242A1

    公开(公告)日:2010-06-03

    申请号:US12607682

    申请日:2009-10-28

    IPC分类号: H04W72/04 H04L27/28

    摘要: A base station comprising an allocator configured to allocate a plurality of dedicated reference (DR) signals to selected resource elements. In the even-numbered time slot in a first resource block, a first group of DR signals are: i) allocated to a first group of adjacent resource elements; and ii) allocated to a second group of adjacent resource elements. In the contiguous odd-numbered time slot in the first resource block, the first group of DR signals are allocated to a third group of adjacent resource elements. In the even-numbered time slot in a second resource block, the first group of adjacent DR signals are allocated to a fourth group of resource elements. In the contiguous odd-numbered time slot in the second resource block, the first group of DR signals are: i) allocated to a fifth group of adjacent resource elements; and ii) allocated to a sixth group of adjacent resource elements.

    摘要翻译: 一种基站,包括分配器,其被配置为向所选择的资源元素分配多个专用参考(DR)信号。 在第一资源块的偶数时隙中,第一组DR信号是:i)分配给第一组相邻资源元素; 和ii)分配给第二组相邻的资源元素。 在第一资源块中连续的奇数时隙中,将第一组DR信号分配给第三组相邻的资源元素。 在第二资源块中的偶数时隙中,第一组相邻DR信号被分配给第四组资源元素。 在第二资源块中的连续奇数时隙中,第一组DR信号是:i)分配给第五组相邻资源元素; 和ii)分配给第六组相邻的资源元素。

    Method and system for reference signal pattern design
    4.
    发明授权
    Method and system for reference signal pattern design 失效
    参考信号图案设计方法与系统

    公开(公告)号:US08228862B2

    公开(公告)日:2012-07-24

    申请号:US12607682

    申请日:2009-10-28

    IPC分类号: H04W72/04 H04W72/28 H04B7/00

    摘要: A base station comprising an allocator configured to allocate a plurality of dedicated reference (DR) signals to selected resource elements. In the even-numbered time slot in a first resource block, a first group of DR signals are: i) allocated to a first group of adjacent resource elements; and ii) allocated to a second group of adjacent resource elements. In the contiguous odd-numbered time slot in the first resource block, the first group of DR signals are allocated to a third group of adjacent resource elements. In the even-numbered time slot in a second resource block, the first group of adjacent DR signals are allocated to a fourth group of resource elements. In the contiguous odd-numbered time slot in the second resource block, the first group of DR signals are: i) allocated to a fifth group of adjacent resource elements; and ii) allocated to a sixth group of adjacent resource elements.

    摘要翻译: 一种基站,包括分配器,其被配置为向所选择的资源元素分配多个专用参考(DR)信号。 在第一资源块的偶数时隙中,第一组DR信号是:i)分配给第一组相邻资源元素; 和ii)分配给第二组相邻的资源元素。 在第一资源块中连续的奇数时隙中,将第一组DR信号分配给第三组相邻的资源元素。 在第二资源块中的偶数时隙中,第一组相邻DR信号被分配给第四组资源元素。 在第二资源块中的连续奇数时隙中,第一组DR信号是:i)分配给第五组相邻资源元素; 和ii)分配给第六组相邻的资源元素。

    System and method for low complexity raptor codes for multimedia broadcast/multicast service
    5.
    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

    IPC分类号: H03M13/05 G06F11/10

    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。

    System and method for low complexity raptor codes for multimedia broadcast/multicast service
    6.
    发明授权
    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:US08301974B2

    公开(公告)日:2012-10-30

    申请号:US12586864

    申请日:2009-09-29

    IPC分类号: H03M13/00

    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。

    FREEZING-BASED LDPC DECODER AND METHOD
    7.
    发明申请
    FREEZING-BASED LDPC DECODER AND METHOD 有权
    基于冷冻的LDPC解码器和方法

    公开(公告)号:US20130061114A1

    公开(公告)日:2013-03-07

    申请号:US13595846

    申请日:2012-08-27

    IPC分类号: H03M13/05 G06F11/10

    摘要: A low-density parity check (LDPC) decoder includes a memory configured to store multiple variable node LLR values in a LLR memory and multiple check nodes messages in a CN memory. The LDPC decoder also includes a saturation indicator configured to determine whether each check node of the H-matrix becomes saturated, and a multiplexer. The multiplexer is configured store an extrinsic check node value in the CN memory and updated LLR value in the LLR memory when the variable node is not saturated; and store a freeze input value in the CN memory and a freeze value in the LLR memory when the variable node is saturated.

    摘要翻译: 低密度奇偶校验(LDPC)解码器包括被配置为在LLR存储器中存储多个可变节点LLR值的存储器和CN存储器中的多个校验节点消息。 LDPC解码器还包括饱和指示符,其被配置为确定H矩阵的每个校验节点是否饱和,以及多路复用器。 当变量节点不饱和时,多路复用器被配置为在CN存储器中存储外部校验节点值并在LLR存储器中存储更新的LLR值; 并且当可变节点饱和时,将冻结输入值存储在CN存储器中并在LLR存储器中存储冻结值。

    System and method for structured LDPC code family
    8.
    发明授权
    System and method for structured LDPC code family 失效
    用于结构化LDPC码族的系统和方法

    公开(公告)号:US08560911B2

    公开(公告)日:2013-10-15

    申请号:US12876903

    申请日:2010-09-07

    IPC分类号: H03M13/00 H03M13/35

    摘要: A low density parity check (LDPC) family of codes is constructed by: determining a protograph for a mother code for the LDPC family of codes. The protograph is lifted by a lifting factor to design code specific protograph for a code. The method also includes constructing a base matrix for the code. The base matrix is constructed by replacing each zero in the code specific protograph with a ‘−1’; and replacing each one in the code specific protograph with a corresponding value from the mother matrix. The LDPC code includes a codeword size of at least 1344, a plurality of information bits, and a plurality of parity bits. The LDPC code is based on a mother code of code length 672.

    摘要翻译: 通过以下方式构建低密度奇偶校验(LDPC)系列:为LDPC码系列确定母码的原图。 原型机由提升因素提升,为代码设计代码特定原型。 该方法还包括为代码构建基本矩阵。 通过用代码特定原型的每个零代替“-1”来构造基本矩阵; 并用代码特定原型中的每一个替换来自母体矩阵的相应值。 LDPC码包括至少1344的码字大小,多个信息比特和多个奇偶校验位。 LDPC码基于代码长度为672的母码。

    COMBINING BASEBAND PROCESSING AND RADIO FREQUENCY BEAM STEERING IN WIRELESS COMMUNICATION SYSTEMS
    9.
    发明申请
    COMBINING BASEBAND PROCESSING AND RADIO FREQUENCY BEAM STEERING IN WIRELESS COMMUNICATION SYSTEMS 有权
    无线通信系统中组合基带处理和无线电频率波束转向

    公开(公告)号:US20130028341A1

    公开(公告)日:2013-01-31

    申请号:US13552565

    申请日:2012-07-18

    IPC分类号: H04B7/02

    摘要: A method and apparatus enable combined baseband (BB) and radio frequency (RF) processing of signals. The method includes receiving, by a receiver, channel estimation information for a channel between a transmitter and the receiver. The method includes identifying a plurality of paths in the channel based on the channel estimation information. The method includes calculating an RF precoding matrix for precoding one or more signals to be transmitted on each of the identified paths. The RF precoding matrix includes a phase shift for each of the identified paths. Additionally, the method includes calculating a BB precoding matrix for precoding the one or more signals by a BB precoding unit associated with the transmitter.

    摘要翻译: 一种方法和装置使能信号的组合基带(BB)和射频(RF)处理。 该方法包括由接收机接收用于发射机和接收机之间的信道的信道估计信息。 该方法包括基于信道估计信息识别信道中的多个路径。 该方法包括计算一个RF预编码矩阵,用于对每个所识别的路径上要发送的一个或多个信号进行预编码。 RF预编码矩阵包括针对每个所识别的路径的相移。 此外,该方法包括:计算BB预编码矩阵,用于通过与发射机相关联的BB预编码单元对一个或多个信号进行预编码。

    METHOD AND APPARATUS FOR PARALLEL PROCESSING IN A GIGABIT LDPC DECODER
    10.
    发明申请
    METHOD AND APPARATUS FOR PARALLEL PROCESSING IN A GIGABIT LDPC DECODER 有权
    在并行处理LDPC码解码器中的方法和装置

    公开(公告)号:US20110307760A1

    公开(公告)日:2011-12-15

    申请号:US13159091

    申请日:2011-06-13

    IPC分类号: H03M13/05 G06F11/10

    摘要: A receiver for use in a wireless communications network capable of decoding encoded transmissions. The receiver comprises receive path circuitry for receiving and downconverting an incoming radio frequency (RF) signal to produce an encoded received signal; and a low-density parity check (LDPC) decoder associated with the receive path circuitry for decoding the encoded received signal. The LDPC decoder further comprises a memory for storing a parity check H matrix comprising R rows and C columns, where each element of the parity check H matrix comprises one of a shift value or a −1 value; and a plurality of processing elements for performing LDPC layered decoding, wherein at least one processing element is operable to process in the same cycle a first row and a second row of the parity check H matrix.

    摘要翻译: 一种用于能够解码编码的传输的无线通信网络中的接收机。 接收机包括用于接收和下变频输入射频(RF)信号以产生编码的接收信号的接收路径电路; 以及与接收路径电路相关联的用于解码编码的接收信号的低密度奇偶校验(LDPC)解码器。 LDPC解码器还包括用于存储包括R行和C列的奇偶校验H矩阵的存储器,其中奇偶校验H矩阵的每个元素包括移位值或-1值之一; 以及用于执行LDPC分层解码的多个处理元件,其中至少一个处理元件可操作以在同一周期中处理奇偶校验H矩阵的第一行和第二行。