Transmission methods and apparatus in multi-band OFDM wideband systems
    2.
    发明授权
    Transmission methods and apparatus in multi-band OFDM wideband systems 有权
    多频带OFDM宽带系统中的传输方法和装置

    公开(公告)号:US08031785B2

    公开(公告)日:2011-10-04

    申请号:US11791872

    申请日:2005-11-10

    CPC classification number: H04L1/1685 H04L1/0071 H04L1/1893

    Abstract: Methods and apparatus for use in a multi-band OFDM wideband transmission systems are disclosed. A frame of source data is mapped by a transmitter for transmission using a first mapping. The frame of source data is then mapped by the transmitter for retransmission using a second mapping to increase frequency diversity. A receiver may identify source data that experiences fading and communicate the tone/frequency on which the fading occurred to the transmitter so that the transmitter may map the source data that experienced fading during transmission to another tone/frequency for retransmission.

    Abstract translation: 公开了在多频带OFDM宽带传输系统中使用的方法和装置。 源数据的帧由发射机映射以便使用第一映射进行传输。 源数据的帧然后由发射机映射以进行重传,使用第二映射来增加频率分集。 接收机可以识别经历衰落的源数据,并向发射机发送衰落发生的音调/频率,使得发射机可以将在传输期间经历衰落的源数据映射到另一个音调/频率以进行重传。

    Method of Beacon Management For Merging Piconets
    3.
    发明申请
    Method of Beacon Management For Merging Piconets 审中-公开
    信标管理方法合并微微网

    公开(公告)号:US20080298329A1

    公开(公告)日:2008-12-04

    申请号:US12066196

    申请日:2006-03-30

    CPC classification number: H04W84/18 H04W48/16 H04W92/02

    Abstract: A method for synchronizing communications between first and second piconets is provided. It is determined whether superframes corresponding to the first and second piconets are synchronized according to respective beacon period start times from the detected beacons. When the superframes are not synchronized, a type of overlap is determined. The type of overlap includes 1) an overlap between beacon periods, 2) an overlap between reservation periods and 3) an overlap between beacon periods and reservation periods of the superframes. The first and second piconets are merged into a single piconet according to rules based on the determined type of overlap.

    Abstract translation: 提供了一种用于同步第一和第二微微网之间的通信的方法。 根据检测到的信标确定相应于第一和第二微微网的超帧是否根据相应的信标周期开始时间来同步。 当超帧不同步时,确定一种重叠类型。 重叠的类型包括1)信标周期之间的重叠,2)预留周期之间的重叠,3)信标周期与超帧的预留周期之间的重叠。 基于确定的重叠类型,根据规则将第一和第二微微网合并成单个微微网。

    Transmission Methods and Apparatus in Multi-Band Ofdm Wideband Systems
    4.
    发明申请
    Transmission Methods and Apparatus in Multi-Band Ofdm Wideband Systems 有权
    多频带宽带系统中的传输方法与装置

    公开(公告)号:US20080212695A1

    公开(公告)日:2008-09-04

    申请号:US11791872

    申请日:2005-11-10

    CPC classification number: H04L1/1685 H04L1/0071 H04L1/1893

    Abstract: Methods and apparatus for use in a multi-band OFDM wideband transmission systems are disclosed. A frame of source data is mapped by a transmitter for transmission using a first mapping. The frame of source data is then mapped by the transmitter for retransmission using a second mapping to increase frequency diversity. A receiver may identify source data that experiences fading and communicate the tone/frequency on which the fading occurred to the transmitter so that the transmitter may map the source data that experienced fading during transmission to another tone/frequency for retransmission.

    Abstract translation: 公开了在多频带OFDM宽带传输系统中使用的方法和装置。 源数据的帧由发射机映射以便使用第一映射进行传输。 源数据的帧然后由发射机映射以进行重传,使用第二映射来增加频率分集。 接收机可以识别经历衰落的源数据,并向发射机发送衰落发生的音调/频率,使得发射机可以将在传输期间经历衰落的源数据映射到另一个音调/频率以进行重传。

    Methods and apparatus for reducing discrete power spectral density components of signals transmitted in wideband communications systems
    6.
    发明授权
    Methods and apparatus for reducing discrete power spectral density components of signals transmitted in wideband communications systems 有权
    用于减少在宽带通信系统中传输的信号的离散功率谱密度分量的方法和装置

    公开(公告)号:US07720187B2

    公开(公告)日:2010-05-18

    申请号:US10547835

    申请日:2004-03-03

    Abstract: Methods and apparatus for reducing discrete power spectral density (PSD) components of wideband signals transmitting blocks of data are disclosed. Discrete components are reduced by acquiring N symbols of pseudo-random data, each symbol having K bits; selecting one bit from each of the acquired symbols to generate N selected bits; selectively inverting a respective element in one of the data blocks responsive to the selected bits; acquiring one or more bits of pseudo-random data to replace a corresponding one or more respective bits of the acquired N symbols of pseudo-random data; and repeating for successive blocks of data.

    Abstract translation: 公开了用于降低传输数据块的宽带信号的离散功率谱密度(PSD)分量的方法和装置。 通过获取伪随机数据的N个符号来减少离散分量,每个符号具有K个比特; 从每个所获取的符号中选择一个位以产生N个选择的比特; 响应于所选择的位,选择性地反转一个数据块中的相应元件; 获取一个或多个伪随机数据位以取代​​所获取的伪随机数据的N个符号中的一个或多个相应位; 并重复连续的数据块。

    Method of band multiplexing to improve system capacity for a multi-band communication system
    7.
    发明授权
    Method of band multiplexing to improve system capacity for a multi-band communication system 有权
    频带复用方法,以提高多频带通信系统的系统容量

    公开(公告)号:US07454218B2

    公开(公告)日:2008-11-18

    申请号:US11207520

    申请日:2005-08-19

    Abstract: A control method of synchronizing communications between or among a plurality of devices in a communication system includes detecting beacons from the plurality of devices in the communication system, and establishing a reservation for at least a portion of the plurality of devices in the communication system. Each reservation is a frame interval in which to transmit symbols from one device to one or more of the other devices in the communications system. Each frame interval and intra-frame interval is set according to the established reservation. Each frame interval and intra-frame interval is a plural, integral number of symbol periods in duration.

    Abstract translation: 在通信系统中的多个设备之间或之间同步通信的控制方法包括从通信系统中的多个设备检测信标,以及建立对通信系统中的多个设备的至少一部分的预留。 每个预留是一个帧间隔,其中将符号从一个设备发送到通信系统中的一个或多个其他设备。 每个帧间隔和帧间间隔根据建立的预留设置。 每个帧间隔和帧内间隔是持续时间的多个符号周期的整数。

    Multi-band OFDM UWB communication systems having improved frequency diversity
    9.
    发明授权
    Multi-band OFDM UWB communication systems having improved frequency diversity 有权
    具有改进的频率分集的多频带OFDM UWB通信系统

    公开(公告)号:US07653141B2

    公开(公告)日:2010-01-26

    申请号:US11395084

    申请日:2006-03-31

    CPC classification number: H04L1/04 H04L5/0007 H04L5/0046 H04L27/2647

    Abstract: Methods and apparatus for transmitting and receiving symbols in a communication system having a plurality of frequency bands are provided. A first symbol is transmitted on a first tone using a first constellation mapping and a second symbol is transmitted on a second tone using a second constellation mapping different from the first constellation mapping. The first symbol is retransmitted on the second tone using the second constellation mapping and the second symbol is retransmitted on the first tone using the first constellation mapping. The first and second symbols are detected from a combination of the received transmitted and retransmitted first and second signals.

    Abstract translation: 提供了在具有多个频带的通信系统中发送和接收符号的方法和装置。 使用第一星座映射以第一音调发送第一符号,并且使用不同于第一星座映射的第二星座映射以第二音调发送第二符号。 使用第二星座映射以第二音调重传第一符号,并且使用第一星座映射在第一音调上重新发送第二符号。 从接收到的发送和重发的第一和第二信号的组合中检测第一和第二符号。

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