-
公开(公告)号：US20050078598A1
公开(公告)日：2005-04-14
申请号：US10900235
申请日：2004-07-27
CPC分类号： H04L5/0007 , H04B1/7163 , H04L1/0041 , H04L1/0059 , H04L5/0023 , H04L27/2602
摘要： This specification describes several improvements to the Multiband OFDM (MB-OFDM) Physical Layer. A new PLCP frame format that better supports interoperability between 3-band and 7-band modes is described. An expanded PHY header is described with more reserved bits for future enhancements, an even number of OFDM symbols for the PLCP header that better supports time spreading and that the information is limited to just 2 OFDM symbols. A zero prefix is used to eliminate ripe in the transmitted spectrum so there is no back off required at the transmitter. A length 160 hierarchical sequence for the packet synchronization sequence is used to help eliminate the artificial side-lobe that is created during the correlation process at the receiver with the current length 128 hierarchical packet synchronization sequence.
摘要翻译： 本规范描述了对多频带OFDM（MB-OFDM）物理层的几个改进。 描述了更好地支持3波段和7波段模式之间的互操作性的新的PLCP帧格式。 用扩展的PHY标头描述更多的保留位用于将来的增强，用于PLCP报头的偶数个OFDM符号更好地支持时间扩展，并且该信息仅限于仅2个OFDM符号。 使用零前缀来消除传输频谱中的成熟，因此在发射机上不需要后退。 用于分组同步序列的长度为160的分级序列用于帮助消除在接收机处的相关处理期间以当前长度128分级分组分组同步序列产生的人造旁瓣。
-
公开(公告)号：US08189454B2
公开(公告)日：2012-05-29
申请号：US12773584
申请日：2010-05-04
CPC分类号： H04L5/023
摘要： A method for providing communication in a wireless network comprising one or more simultaneously operating pico networks includes dividing UWB spectrum into a plurality of frequency bands. These bands are formed into band groups. At least one band group is assigned to each one of the pico networks. At least pne time frequency code is assigned to symbols associated with each one of the pico networks on a transmission-by-transmission basis. A system for channelization of the spectrum includes a frequency-synthesized oscillator and a time frequency code generator configured to assign time-frequency codes to successive transmissions of a pico network such that the successive transmissions are transmitted in all frequency bands of a band group assigned to the pico network.
摘要翻译： 一种用于在包括一个或多个同时操作的微微网络的无线网络中提供通信的方法包括将UWB频谱划分成多个频带。 这些带形成带组。 至少一个频段组被分配给每个微微网络。 在逐个传输的基础上，至少将时间频率码分配给与微微网络中的每一个相关联的符号。 用于频谱信道化的系统包括频率合成振荡器和时间频率码发生器，其被配置为将时频码分配给微微网络的连续传输，使得连续传输在分配给 微微网络。
-
23.发明授权Robust packet detection, symbol timing, channel length estimation and channel response estimation for wireless systems 有权无线系统的鲁棒分组检测，符号定时，信道长度估计和信道响应估计公开(公告)号：US07965798B2
公开(公告)日：2011-06-21
申请号：US11893050
申请日：2007-08-13
IPC分类号： H04L27/06
CPC分类号： H04L25/0216 , H04B17/327 , H04L25/022 , H04L25/0228 , H04L27/2656 , H04L27/2662 , H04L27/2675
摘要： A method. The method includes producing a first signal match indication based on at least one match indication indicative of a match between at least one signal received in at least one band and a reference signal. The method also includes producing a first signal multipath combined signal based upon the first signal match indication, and detecting a first peak in the first multipath combined signal.
摘要翻译： 一个方法。 该方法包括基于指示在至少一个频带中接收的至少一个信号与参考信号之间的匹配的至少一个匹配指示产生第一信号匹配指示。 该方法还包括基于第一信号匹配指示产生第一信号多径组合信号，以及检测第一多路复合信号中的第一峰值。
-
公开(公告)号：US20100215077A1
公开(公告)日：2010-08-26
申请号：US12773584
申请日：2010-05-04
IPC分类号： H04B1/707
CPC分类号： H04L5/023
摘要： A method for providing communication in a wireless network comprising one or more simultaneously operating pico networks includes dividing UWB spectrum into a plurality of frequency bands. These bands are formed into band groups. At least one band group is assigned to each one of the pico networks. At least pne time frequency code is assigned to symbols associated with each one of the pico networks on a transmission-by-transmission basis. A system for channelization of the spectrum includes a frequency-synthesized oscillator and a time frequency code generator configured to assign time-frequency codes to successive transmissions of a pico network such that the successive transmissions are transmitted in all frequency bands of a band group assigned to the pico network.
摘要翻译： 一种用于在包括一个或多个同时操作的微微网络的无线网络中提供通信的方法包括将UWB频谱划分成多个频带。 这些带形成带组。 至少一个频段组被分配给每个微微网络。 在逐个传输的基础上，至少将时间频率码分配给与微微网络中的每一个相关联的符号。 用于频谱信道化的系统包括频率合成振荡器和时间频率码发生器，其被配置为将时频码分配给微微网络的连续传输，使得连续传输在分配给 微微网络。
-
25.发明授权Versatile system for dual carrier transformation in orthogonal frequency division multiplexing 有权用于正交频分复用的双载波变换的多功能系统公开(公告)号：US07668075B2
公开(公告)日：2010-02-23
申请号：US11099317
申请日：2005-04-05
IPC分类号： H04J11/00
CPC分类号： H04L27/2602 , H04B1/7176
摘要： Embodiments of the invention provide a versatile system for selectively spreading carrier data across multiple carrier paths within an Orthogonal Frequency Division Multiplexing (OFDM) system, particularly an ultra-wideband (UWB) system. The present invention provides a data input, which passes data to a randomizer. The data then passes to a convolutional code function (206), the output of which is punctured by puncturing function. An interleaver function receives the punctured code data, and cooperatively operates with a mapper element to prepare the coded data for pre-transmission conversion by an IFFT. The mapper element comprises a dual carrier modulation function, which associates and transforms two punctured code data elements into a format for transmission on two separate signal tones.
摘要翻译： 本发明的实施例提供了一种通用系统，用于在正交频分复用（OFDM）系统，特别是超宽带（UWB）系统内的多个载波路径上选择性地扩展载波数据。 本发明提供一种将数据传递给随机发生器的数据输入。 数据然后传递到卷积码功能（206），其输出由穿孔功能打孔。 交织器功能接收穿孔码数据，并与映射器元件协作操作以通过IFFT准备用于预传输转换的编码数据。 映射器元件包括双载波调制功能，其将两个穿孔码数据元素相关联并变换为用于在两个分离的信号音调上传输的格式。
-
26.发明授权公开(公告)号：US07313190B2
公开(公告)日：2007-12-25
申请号：US10797880
申请日：2004-03-10
IPC分类号： H04L27/00
CPC分类号： H04L1/0059 , H03M13/2707 , H04B1/7176 , H04B1/719 , H04L1/0068 , H04L1/0071 , H04L5/0007 , H04L5/0042 , H04L5/0044 , H04L5/0083
摘要： An efficient bit interleaving scheme for a multi-band OFDM ultra-wideband (UWB) system. The encoded bits of the multi-band OFDM system are interleaved within each OFDM symbol and across OFDM symbols. The bit interleaving scheme minimizes performance degradation due to groups of contiguous OFDM tones experiencing a poor SNR caused by the frequency selective channel, exploits the frequency diversity across sub-bands, randomizes the effect of co-channel interference from simultaneously operating un-coordinated piconets, and randomizes the impact of generic narrow-band interferers present within the UWB spectrum.
摘要翻译： 一种用于多频带OFDM超宽带（UWB）系统的有效位交织方案。 多频带OFDM系统的编码比特在每个OFDM符号内和OFDM符号之间进行交织。 比特交织方案最小化由于频率选择信道引起的差的SNR的连续OFDM音调组的性能下降，利用子频带上的频率分集，随机化来自同时操作的非协调微微网的同信道干扰的影响， 并随机化UWB频谱内存在的通用窄带干扰源的影响。
-
公开(公告)号：US20070195863A1
公开(公告)日：2007-08-23
申请号：US11691020
申请日：2007-03-26
申请人： Anuj Batra , Jaiganesh Balakrishnan
发明人： Anuj Batra , Jaiganesh Balakrishnan
IPC分类号： H04B1/00
CPC分类号： H04L27/2613 , H04L5/0007 , H04L5/0037 , H04W84/18 , H04W88/02
摘要： A wireless device is provided that distinguishes between multiple piconets. The wireless device includes a preamble component and a correlator component. The preamble component provides a preamble for a wireless fixed frequency interleaving transmission, and the correlator component distinguishes a wireless transmission based on the preamble. A circuit is provided for a wireless receiver to despread a hierarchical sequence made by spreading an M-length sequence with an N-length sequence. The circuit includes a first and second despreaders. The first despreader is coupled to a signal input to despread a received signal. The signal is a fixed frequency interleaved transmission. The second despreader is coupled to an output of the first despreader. The second despreader despreads the output of the first despreader with a second sequence.
摘要翻译： 提供了区分多个微微网的无线设备。 无线设备包括前置码组件和相关器组件。 前导码部分提供无线固定频率交织传输的前导码，并且相关器组件基于前导码区分无线传输。 提供一种用于无线接收机的电路，用于对通过扩展具有N长度序列的M长度序列进行扩展而得到的分级序列进行解扩。 电路包括第一和第二解扩器。 第一解扩器耦合到信号输入端以对接收的信号进行解扩。 信号是固定频率交织传输。 第二解扩器耦合到第一解扩器的输出端。 第二解扩器以第二序列解扩第一解扩器的输出。
-
28.发明申请Methods and systems for detecting and mitigating interference for a wireless device 有权用于检测和减轻无线设备干扰的方法和系统公开(公告)号：US20060171445A1
公开(公告)日：2006-08-03
申请号：US11340876
申请日：2006-01-27
IPC分类号： H04B1/69
CPC分类号： H04L27/2647 , H04B1/719 , H04W52/243
摘要： In at least some embodiments, a method for mitigating interference between an Ultra Wideband (UWB) device and a non-UWB device is provided. The method includes, dynamically determining if a frequency channel associated with the non-UWB device is being used. If the frequency channel is being used, the method adjusts a UWB frequency band used for UWB signal transmission.
摘要翻译： 在至少一些实施例中，提供了一种用于减轻超宽带（UWB）设备和非UWB设备之间的干扰的方法。 该方法包括：动态地确定是否正在使用与非UWB设备相关联的频道。 如果正在使用频道，则该方法调整用于UWB信号传输的UWB频带。
-
公开(公告)号：US20050237923A1
公开(公告)日：2005-10-27
申请号：US11115816
申请日：2005-04-26
申请人： Jaiganesh Balakrishnan , Anuj Batra , Anand Dabak
发明人： Jaiganesh Balakrishnan , Anuj Batra , Anand Dabak
CPC分类号： H04L27/2602 , H04B7/02
摘要： A transmitter 200 is provided. The transmitter 200 comprises a mapper 207 operable to map a bit stream into a plurality of tones to promote high data rate multi-band orthogonal frequency division multiplex communication, wherein the tones can take on sixteen or more different values 300. In another embodiment a communications system 1360 is provided that includes a transceiver 1362 that has two or more antennas 1394 and 1396. The transceiver 1362 transmits a first multi-band orthogonal frequency division multiplex signal in multiple input/multiple output mode and receives a second multi-band orthogonal frequency division multiplex signal in multiple input/multiple output mode. In another embodiment, a transceiver 200, 202 transmits a first multi-band orthogonal frequency division multiplex symbol concurrently on a plurality of sub-bands and receives a second multi-band orthogonal frequency division multiplex symbol concurrently on a plurality of sub-bands.
摘要翻译： 提供发射机200。 发射机200包括映射器207，其可操作以将比特流映射成多个音调以促进高数据速率多频带正交频分多路复用通信，其中音调可以具有十六个或更多个不同的值300.在另一个实施例中，通信 提供系统1360，其包括具有两个或多个天线1394和1396的收发机1362.收发机1362以多输入/多输出模式发送第一多频带正交频分多路复用信号，并接收第二多频带正交频分 多重输入/多输出模式下的多路复用信号。 在另一个实施例中，收发器200,202在多个子带上同时发送第一多频带正交频分复用符号，并且在多个子带上同时接收第二多频带正交频分复用符号。
-
30.发明申请Additional hierarchical preamble for support of FDMA channel in a multi-band OFDM system 有权用于在多频带OFDM系统中支持FDMA信道的附加分层前导码公开(公告)号：US20050232342A1
公开(公告)日：2005-10-20
申请号：US11054961
申请日：2005-02-10
申请人： Anuj Batra , Jaiganesh Balakrishnan
发明人： Anuj Batra , Jaiganesh Balakrishnan
CPC分类号： H04L27/2613 , H04B1/709 , H04J13/107 , H04L5/0007 , H04L5/0016 , H04L5/0032 , H04L5/0048 , H04L5/0062 , H04L5/0092 , H04L25/0226 , H04L25/03828
摘要： A wireless device 10, 12 that distinguishes between multiple piconets is provided. The wireless device 10, 12 includes a preamble component operable to provide a preamble for a wireless fixed frequency interleaving transmission. The wireless device 10, 12 also includes a correlator component operable to distinguish a wireless transmission based on the preamble. The preamble is based on a 128-length sequence 120, 136, 144, formed using a 16-length sequence and a 8-length sequence. The 16-length sequence is selected from the group consisting of a first 16-length sequence 110, a second 16-length sequence 132, and a third 16-length sequence 140. The 8-length sequence is selected from the group consisting of a first 8-length sequence 112, a second 8-length sequence 134, and a third 8-length sequence 144.
摘要翻译： 提供了区分多个微微网的无线设备10,12。 无线设备10,12包括可用于为无线固定频率交织传输提供前置码的前同步码组件。 无线设备10,12还包括可用于基于前导码区分无线传输的相关器组件。 前导码基于使用16长度序列和8长度序列形成的128长度序列120,136,144。 16长度序列选自由第一个16长度序列110，第二个16长度序列132和第三个16长度序列140组成的组。 8长度序列选自由第一8长度序列112，第二8长度序列134和第三8长度序列144组成的组。
-
-
-
-
-
-
-
-
-
搜索结果
100 条记录 (耗时 0.029 秒)
