Multi-Band OFDM Communications System
    91.
    发明申请
    Multi-Band OFDM Communications System 有权
    多频带OFDM通信系统

    公开(公告)号:US20100020684A1

    公开(公告)日:2010-01-28

    申请号:US12571735

    申请日:2009-10-01

    IPC分类号: H04W4/00 H04L12/26

    CPC分类号: H04L5/023

    摘要: System and method for providing multiple access in a multi-band, orthogonal frequency division multiplexed (multi-band-OFDM) communications system. A preferred embodiment comprises determining a transmission bandwidth to support a performance requirement and configuring transmission bands in the multi-band-OFDM communications system based upon the transmission bandwidth, wherein the transmission bands may be made up of smaller transmission bands bonded together. Further comprising initializing communications with the configured transmission bands. The use of bonded transmission bands can provide increased data rates and/or increased range performance.

    摘要翻译: 用于在多频带正交频分复用(多频带OFDM)通信系统中提供多址的系统和方法。 优选实施例包括确定传输带宽以支持性能要求,并且基于传输带宽来配置多频带OFDM通信系统中的传输频带,其中传输频带可由较小的传输频带组合在一起。 还包括初始化与配置的传输频带的通信。 使用粘合的传输带可以提供增加的数据速率和/或增加的范围性能。

    Mapping data tones onto guard tones for a multi-band OFDM system
    92.
    发明授权
    Mapping data tones onto guard tones for a multi-band OFDM system 有权
    将数据音调映射到多频带OFDM系统的保护音

    公开(公告)号:US07532565B2

    公开(公告)日:2009-05-12

    申请号:US11021053

    申请日:2004-12-22

    IPC分类号: H04J11/00

    CPC分类号: H04L27/2605 H04B1/7163

    摘要: A device (104, 106, 108) is provided for wireless communication. The device (104, 106, 108) includes a transmitter (200) operable to transmit an orthogonal frequency division multiplex symbol. The orthogonal frequency division multiplex symbol has a first set of copied tones adjacent a first end of the orthogonal frequency division multiplex symbol, a second set of copied tones adjacent a second end of the orthogonal frequency division multiplex symbol, and a plurality of data tones provided between the first and second sets of copied tones. The first and second sets of copied tones include copies of at least some of the plurality of data tones.

    摘要翻译: 提供用于无线通信的设备(104,106,108)。 设备(104,106,108)包括可操作以发送正交频分复用符号的发射机(200)。 正交频分复用符号具有与正交频分多路复用符号的第一端相邻的第一组复制音调,与正交频分复用符号的第二端相邻的第二组复制音和提供的多个数据音 在第一组和第二组复制音之间。 第一和第二组复制音调包括多个数据音调中的至少一些的副本。

    Structured adaptive frequency hopping
    93.
    发明授权
    Structured adaptive frequency hopping 有权
    结构化自适应跳频

    公开(公告)号:US07236511B2

    公开(公告)日:2007-06-26

    申请号:US10003864

    申请日:2001-11-02

    IPC分类号: H04B1/00

    摘要: The invention generally provides a method of intelligent frequency hopping such as in Bluetooth and Home RF networks. The method (100) includes the acts of sampling a plurality of channels in a frequency band and identifying each channel as a good channels or a bad channel (110), determining the size of a good window and the size of a bad window (120), and assigning a plurality of good channels to a good window (130) and a plurality of bad channels to a bad window (140). Accordingly, the method increases the reliability and throughput of wireless networks.

    摘要翻译: 本发明通常提供智能跳频的方法,例如在蓝牙和家庭RF网络中。 方法(100)包括在频带中采样多个信道的行为,并且将每个信道识别为良好信道或坏信道(110),确定良好窗口的大小和坏窗口的大小(120 ),并且将多个良好信道分配给良好窗口(130)和多个坏信道到坏窗口(140)。 因此,该方法提高了无线网络的可靠性和吞吐量。

    METHOD AND APPARATUS FOR TRANSMIT POWER CONTROL IN WIRELESS DATA COMMUNICATION SYSTEMS
    94.
    发明申请
    METHOD AND APPARATUS FOR TRANSMIT POWER CONTROL IN WIRELESS DATA COMMUNICATION SYSTEMS 有权
    无线数据通信系统中发射功率控制的方法与装置

    公开(公告)号:US20070099644A1

    公开(公告)日:2007-05-03

    申请号:US11380075

    申请日:2006-04-25

    IPC分类号: H04B7/00 H04Q7/20

    摘要: The distance between a first Multi Band Orthogonal Frequency Division Multiplex (MB-OFDM) data transceiver and a second or more such transceiver is determined using known techniques. The radio frequency path loss between transceivers is estimated given said distance, using a known relationship between distance and path loss, and further accounting for line-of-sight or non-line-of-sight conditions if desired. This path loss value is added to the typically minimum transmit power level, absent path loss, needed for reliable data communication. This modified initial transmit power level is then used by the first transceiver to begin the known iterative feedback process of transmit power control (TPC). Because this modified initial transmit power level, based on distance, is closer to the final optimum level, convergence in the TPC process occurs in fewer steps and less time than had the initial transmit power been maximum power as is typical in known TPC systems.

    摘要翻译: 使用已知技术确定第一多频带正交频分复用(MB-OFDM)数据收发机与第二或更多个这样的收发机之间的距离。 使用距离和路径损耗之间的已知关系,给出所述距离估计收发器之间的射频路径损耗,并且如果需要,进一步考虑视线或非视距条件。 该路径损耗值被添加到可靠数据通信所需的通常最小发射功率电平,不存在路径损耗。 该修改的初始发射功率电平然后由第一收发器用于开始已知的发射功率控制(TPC)的迭代反馈处理。 由于这种基于距离的修改的初始发射功率电平更接近于最终的最优电平,所以在已知TPC系统中典型的情况下,TPC过程中的收敛在比初始发射功率达到最大功率的步骤少,时间更短的时间内发生。

    Encoding for Digital Communications in a Multiple-Input, Multiple-Output Environment
    95.
    发明申请
    Encoding for Digital Communications in a Multiple-Input, Multiple-Output Environment 有权
    多输入多输出环境中的数字通信编码

    公开(公告)号:US20070041458A1

    公开(公告)日:2007-02-22

    申请号:US11465020

    申请日:2006-08-16

    IPC分类号: H04K1/10 H04L5/12 H04L1/02

    摘要: Transceiver circuitry for use in a multiple-input, multiple-output (MIMO), orthogonal frequency-division multiplexing (OFDM), communications environment, is disclosed. Error correction coding according to a fixed-block size code, such as low density parity check (LDPC) coding, is implemented. The codeword length, and codeword arrangement, are selected by determining a minimum number of OFDM symbol periods required for a payload size, and the number of available information bits in those symbol periods. A rule-based approach, for example in a table, is used to select the codeword length, and the number of codewords required. Shortening is then applied to the code, followed by determining whether puncturing or repeating of bits is necessary to efficiently use the available OFDM symbols.

    摘要翻译: 公开了用于多输入,多输出(MIMO),正交频分复用(OFDM),通信环境中的收发器电路。 实现了诸如低密度奇偶校验(LDPC)编码之类的固定块大小码的纠错编码。 通过确定有效载荷大小所需的OFDM符号周期的最小数目以及那些符号周期中的可用信息比特数来选择码字长度和码字排列。 例如在表中使用基于规则的方法来选择码字长度和所需的码字数量。 然后将缩短应用于代码,随后确定是否需要打孔或重复位以有效地使用可用的OFDM符号。

    Quality of service aware robust link state routing for mesh networks
    96.
    发明申请
    Quality of service aware robust link state routing for mesh networks 审中-公开
    服务质量感知网状网络的鲁棒链路状态路由

    公开(公告)号:US20060268879A1

    公开(公告)日:2006-11-30

    申请号:US11432124

    申请日:2006-05-11

    IPC分类号: H04L12/56

    摘要: A wireless device for routing data in a mesh network is provided. The wireless device includes a component operable to obtain metrics related to one or more directly adjacent links in the mesh network and metrics received from one or more other nodes in the mesh network. The component is operable to apply parameters that include weighting to one or more of the metrics to compute one or more routes for routing data. The wireless devices also includes a transmitter that is operable to propagate to one or more adjacent nodes in the mesh network routing information related to the parameterized metrics obtained by the component.

    摘要翻译: 提供了一种用于在网状网络中路由数据的无线设备。 无线设备包括可操作以获得与网状网络中的一个或多个直接相邻链路相关的度量的度量以及从网状网络中的一个或多个其他节点接收的度量。 该组件可操作以将包括对一个或多个度量的加权的参数应用于计算用于路由数据的一个或多个路由。 无线设备还包括发射机,其可操作地传播到网状网络中的一个或多个相邻节点与由该组件获得的参数化度量相关的路由信息​​。

    Frequency re-mapping for structure adaptive frequency hopping
    97.
    发明授权
    Frequency re-mapping for structure adaptive frequency hopping 有权
    用于结构自适应跳频的频率重映射

    公开(公告)号:US07116699B2

    公开(公告)日:2006-10-03

    申请号:US10003865

    申请日:2001-11-02

    IPC分类号: H04B1/713 H04B1/69

    CPC分类号: H04B1/715 H04B2001/7154

    摘要: The invention generally provides a method of intelligent frequency hopping such as in Bluetooth and Home RF networks. The method (400) includes the acts of generating windows (410), sampling an original frequency (430), determining if the original frequency is of a desired frequency type (440), using the original frequency when the original frequency is the desired frequency type (460), and mapping the frequency to the desired frequency type when the original frequency is not the desired frequency type (450). Accordingly, the method increases the reliability and throughput of wireless networks.

    摘要翻译: 本发明通常提供智能跳频的方法,例如在蓝牙和家庭RF网络中。 方法(400)包括当原始频率为期望频率时,使用原始频率,生成窗口(410),采样原始频率(430),确定原始频率是否为期望频率类型(440)的动作 类型(460),并且当原始频率不是期望的频率类型(450)时,将频率映射到期望的频率类型。 因此,该方法提高了无线网络的可靠性和吞吐量。

    Versatile system for optimizing data fragmentation in digital communications
    98.
    发明申请
    Versatile system for optimizing data fragmentation in digital communications 有权
    用于优化数字通信中数据碎片的通用系统

    公开(公告)号:US20060034333A1

    公开(公告)日:2006-02-16

    申请号:US11191738

    申请日:2005-07-28

    IPC分类号: H04J3/24

    CPC分类号: H04L27/2608

    摘要: The present invention provides a versatile system for optimizing data fragmentation in a digital communications—particularly OFDM communications—system. A digital transmission system (100) is provided, having a PHY-level constraint. An array (104, 112) of data transmission parameters (106-110, 114-116), relating to the digital transmission system, is provided. A fragmentation construct (102) is provided, and adapted to determine a number of symbols required to transmit a given data transmission payload. The fragmentation construct calculates (118), based on the number symbols required, and on certain parameter information from the array, a number of bytes of data that must be transmitted in the given data transmission payload in order to minimize pad bits added to the data transmission payload.

    摘要翻译: 本发明提供了一种用于优化数字通信(特别是OFDM通信系统)中的数据分段的通用系统。 提供具有PHY级约束的数字传输系统(100)。 提供了与数字传输系统相关的数据传输参数(106-110,114-116)的阵列(104,112)。 提供分段结构(102),并且适于确定发送给定数据传输有效载荷所需的符号数量。 碎片结构基于所需的数字符号计算(118),并根据阵列的某些参数信息计算必须在给定数据传输有效载荷中传输的数据字节数,以便最小化添加到数据中的填充位 传输有效载荷。

    System and method for channelization and data multiplexing in a wireless communication network
    99.
    发明申请
    System and method for channelization and data multiplexing in a wireless communication network 审中-公开
    用于无线通信网络中的信道化和数据复用的系统和方法

    公开(公告)号:US20050180375A1

    公开(公告)日:2005-08-18

    申请号:US11032402

    申请日:2005-01-10

    CPC分类号: H04B1/71632 H04J13/0022

    摘要: A system and method for channelization and data multiplexing in ultra-wideband (UWB) wireless communication system is described. The spectrum allocated for UWB in a multi-band OFDM (orthogonal frequency division multiplex) system is subdivided into various bands. A set of time frequency codes (TFC's) is defined, wherein each code specifies one of a plurality of unique band versus time sequences for a particular band group, for sequential data symbols of a given piconet. The separation of data words from multiple devices or multiple simultaneously operating piconets (SOP's) is provided by a combination of FDMA and TFC's. The combination of FDMA and TFC's provides a simplified interface between the MAC and PHY.

    摘要翻译: 描述了在超宽带(UWB)无线通信系统中的信道化和数据复用的系统和方法。 在多频带OFDM(正交频分复用)系统中为UWB分配的频谱被细分成各种频带。 定义一组时间频率码(TFC),其中每个码指定给定微微网的顺序数据符号的特定频带组的多个唯一频带对时间序列中的一个。 数据字从多个设备或多个同时操作的微微网(SOP)的分离由FDMA和TFC的组合提供。 FDMA和TFC的组合提供了MAC和PHY之间的简化接口。

    Systems and methods for network coding using maximum distance separable (MDS) linear network codes
    100.
    发明授权
    Systems and methods for network coding using maximum distance separable (MDS) linear network codes 有权
    使用最大距离可分离(MDS)线性网络代码进行网络编码的系统和方法

    公开(公告)号:US09113470B2

    公开(公告)日:2015-08-18

    申请号:US13595894

    申请日:2012-08-27

    IPC分类号: H04W4/00 H04W72/04 H04L1/00

    摘要: A method for network coding includes generating a message matrix, where each column of the message matrix corresponds to one of K message packets and each element in a column of the message matrix corresponds to one of the symbols of the corresponding message packet. The method further includes generating a network code matrix to map the K message packets to N encoded packets, where any combination of K columns of the network code matrix is linearly independent and N is greater than K. The method also includes multiplying the message matrix by the network code matrix to generate a transmission matrix, where each column of the transmission matrix corresponds to an encoded packet for wireless transmission.

    摘要翻译: 一种用于网络编码的方法包括生成消息矩阵,其中消息矩阵的每一列对应于K个消息分组中的一个,并且消息矩阵的列中的每个元素对应于相应消息分组的一个符号。 该方法还包括生成网络码矩阵以将K个消息分组映射到N个编码分组,其中网络码矩阵的K列的任何组合是线性独立的并且N大于K.该方法还包括将消息矩阵乘以 网络码矩阵来生成传输矩阵,其中传输矩阵的每一列对应于用于无线传输的编码分组。