Method and system for retransmitting data packets in a space-time coded radio communication system
    12.
    发明授权
    Method and system for retransmitting data packets in a space-time coded radio communication system 有权
    用于在时空编码无线电通信系统中重传数据分组的方法和系统

    公开(公告)号:US08462871B2

    公开(公告)日:2013-06-11

    申请号:US13545116

    申请日:2012-07-10

    IPC分类号: H04L1/02

    CPC分类号: H04L1/0643 H04L1/1867

    摘要: A method and system are provided for minimizing errors by retransmitting packets in a multiple-input-multiple-output (MIMO) space-time coded packet radio. A packet is transmitted using a first STC code mapping, the mapping including well-known symbol operations, and optional signal weighting. When transmission errors are detected the packet is re-transmitted using STC code mappings selected in turn from a deterministic sequence of STC code mappings. The STC code mappings are chosen in accordance with one or more principles.

    摘要翻译: 提供了一种用于通过在多输入多输出(MIMO)空时编码分组无线电中重传分组来最小化错误的方法和系统。 使用第一STC码映射来发送分组,该映射包括公知的符号操作和可选的信号加权。 当检测到传输错误时,使用从确定性序列的STC码映射依次选择的STC码映射来重新发送分组。 根据一个或多个原则选择STC代码映射。

    Space-time block coding systems and methods
    13.
    发明授权
    Space-time block coding systems and methods 有权
    空时块编码系统和方法

    公开(公告)号:US08422585B2

    公开(公告)日:2013-04-16

    申请号:US12764813

    申请日:2010-04-21

    IPC分类号: H04L27/00 H03K9/00

    摘要: Although orthonormal space-time coding matrices provide for optimal communication system performance in that associated correlation matrices include no non-zero off-diagonal elements, unity code rate orthonormal coding matrices are difficult to identify for arbitrary communication network equipment. According to embodiments of the present invention, non-orthonormal space-time coding matrices, for which associated correlation matrices include non-zero off-diagonal elements, are used to encode data symbols. The non-orthonormal space-time coding matrices are more easily determined, and undesirable effects of the non-zero off-diagonal components are reduced by selecting a coding matrix from among a number of such matrices. For example, a particular space-time coding matrix may be selected from a number of generated space-time coding matrices based on a number of non-zero off-diagonal elements or a power of a trace of the associated correlation matrices.

    摘要翻译: 虽然正交空时编码矩阵提供了最佳的通信系统性能,因为相关联的相关矩阵不包括非零非对角线元素,单位码率正交编码矩阵难以识别任意通信网络设备。 根据本发明的实施例,用于相关联的相关矩阵包括非零非对角元素的非正交空时编码矩阵用于对数据符号进行编码。 非正交空时编码矩阵更容易确定,并且通过从多个这样的矩阵中选择编码矩阵来减少非零非对角分量的不期望的影响。 例如,可以基于非零非对角元素的数量或相关联的相关矩阵的轨迹的幂来从多个生成的空时编码矩阵中选择特定时空编码矩阵。

    Effective signal interference plus noise ratio estimation for multi-order modulation
    14.
    发明授权
    Effective signal interference plus noise ratio estimation for multi-order modulation 有权
    用于多阶调制的有效信号干扰加噪声比估计

    公开(公告)号:US08416881B1

    公开(公告)日:2013-04-09

    申请号:US12409128

    申请日:2009-03-23

    CPC分类号: H04L1/206

    摘要: A method for determining an effective signal-to-interference-plus-noise ratio (ESINR) associated with transmission of modulation symbols at a plurality of different modulation orders. A signal-to-interference-plus-noise ratio bit factor (SBF) is determined for each of Q number of bits per symbol associated with a first modulation order based on a signal-to-interference-plus-noise ratio (SNR) associated with a base symbol associated with a base modulation order. A SBF is determined for each of P number of bits per symbol associated with a second modulation order based on the SNR associated with the base symbol. The first modulation order is different from the second modulation order. An ESINR of a first modulation symbol associated with the first modulation order and a second modulation symbol associated with the second modulation order is determined.

    摘要翻译: 一种用于确定与多个不同调制阶数下的调制符号传输相关联的有效信号与干扰加噪声比(ESINR)的方法。 基于相关联的信噪比加噪声比(SNR),针对与第一调制阶数相关联的每个码元的Q个比特中的每一个确定信号与干扰加噪声比比特因子(SBF) 具有与基本调制阶数相关联的基本符号。 基于与基本符号相关联的SNR,为与第二调制阶数相关联的每个符号的P个比特中的每一个确定SBF。 第一调制阶数与第二调制阶数不同。 确定与第一调制阶数相关联的第一调制符号和与第二调制阶数相关联的第二调制符号的ESINR。

    Method and System for Wireless Communication in Multiple Operating Environments
    16.
    发明申请
    Method and System for Wireless Communication in Multiple Operating Environments 审中-公开
    多种操作环境中的无线通信方法与系统

    公开(公告)号:US20130028150A1

    公开(公告)日:2013-01-31

    申请号:US13620746

    申请日:2012-09-15

    IPC分类号: H04W88/06 H04W72/04

    摘要: A wireless communication method and system are provided. A first wireless communication numerology, e.g., OFDM operating parameters, corresponding to a first operational mode is established. A second wireless communication numerology corresponding to a second operational mode is also established. The first wireless communication numerology is different than the second wireless communication numerology. One of the first operational mode and the second operational mode is selected. One of the first wireless communication numerology and the second wireless communication numerology corresponding to the selected operational mode is used in which communication in the first operational mode and the second operational mode use substantially similar synchronization channels. The present invention also uses the same superframe structure for the first and second operational modes for Ultra-Mobile Broadband (“UMB”) networks and the same frame structure for the first and second operational modes for Long Term Evolution (“LTE”) networks.

    摘要翻译: 提供了一种无线通信方法和系统。 建立对应于第一操作模式的第一无线通信命令,例如OFDM操作参数。 还建立了对应于第二操作模式的第二无线通信命理。 第一种无线通信命理与第二种无线通信命理不同。 选择第一操作模式和第二操作模式之一。 使用与所选择的操作模式相对应的第一无线通信命令和第二无线通信命令之一,其中在第一操作模式和第二操作模式中的通信使用基本相似的同步信道。 本发明还针对超移动宽带(UMB)网络的第一和第二操作模式使用相同的超帧结构,以及用于长期演进(LTE)网络的第一和第二操作模式的相同帧结构。

    SCATTERED PILOT PATTERN AND CHANNEL ESTIMATION METHOD FOR MIMO-OFDM SYSTEMS
    18.
    发明申请
    SCATTERED PILOT PATTERN AND CHANNEL ESTIMATION METHOD FOR MIMO-OFDM SYSTEMS 有权
    用于MIMO-OFDM系统的散射引航模式和信道估计方法

    公开(公告)号:US20130016693A1

    公开(公告)日:2013-01-17

    申请号:US13617175

    申请日:2012-09-14

    IPC分类号: H04W72/04

    摘要: Methods and apparatus are provided for inserting data symbols and pilot symbols in an OFDM (orthogonal frequency division multiplexing) transmission resource utilizing frequency hopping patterns for the data symbols and/or the pilot symbols. Data symbols and pilot symbols are allocated for down link (base station to mobile station) and up link (mobile station to bases station) transmission resources in a two-dimensional time-frequency pattern. For each antenna of a MIMO-OFDM (multiple input multiple output OFDM) communication system, pilot symbols are inserted in a scattered pattern in time-frequency and data symbols are inserted in an identical frequency-hopping pattern in time-frequency as that of other antennas.

    摘要翻译: 提供了使用用于数据符号和/或导频符号的跳频图案在OFDM(正交频分复用)传输资源中插入数据符号和导频符号的方法和装置。 数据符号和导频符号以二维时频模式分配给下行链路(基站到移动台)和上行链路(移动台到基站)传输资源。 对于MIMO-OFDM(多输入多输出OFDM)通信系统的每个天线,导频符号以时间 - 频率的散射图案插入,并且数据符号以与其它信号的时间频率相同的跳频图案插入 天线。

    Space-Time Block Coding Systems and Methods
    19.
    发明申请
    Space-Time Block Coding Systems and Methods 有权
    时空块编码系统与方法

    公开(公告)号:US20130003885A1

    公开(公告)日:2013-01-03

    申请号:US13616182

    申请日:2012-09-14

    IPC分类号: H04B7/06

    摘要: Although orthonormal space-time coding matrices provide for optimal communication system performance in that associated correlation matrices include no non-zero off-diagonal elements, unity code rate orthonormal coding matrices are difficult to identify for arbitrary communication network equipment. According to embodiments of the present invention, non-orthonormal space-time coding matrices, for which associated correlation matrices include non-zero off-diagonal elements, are used to encode data symbols. The non-orthonormal space-time coding matrices are more easily determined, and undesirable effects of the non-zero off-diagonal components are reduced by selecting a coding matrix from among a number of such matrices. For example, a particular space-time coding matrix may be selected from a number of generated space-time coding matrices based on a number of non-zero off-diagonal elements or a power of a trace of the associated correlation matrices.

    摘要翻译: 虽然正交空时编码矩阵提供了最佳的通信系统性能,因为相关联的相关矩阵不包括非零非对角线元素,单位码率正交编码矩阵难以识别任意通信网络设备。 根据本发明的实施例,用于相关联的相关矩阵包括非零非对角元素的非正交空时编码矩阵用于对数据符号进行编码。 非正交空时编码矩阵更容易确定,并且通过从多个这样的矩阵中选择编码矩阵来减少非零非对角分量的不期望的影响。 例如,可以基于非零非对角元素的数量或相关联的相关矩阵的轨迹的幂来从多个生成的空时编码矩阵中选择特定时空编码矩阵。