专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明授权

US08340072B2 Preambles in OFDMA system 有权
标题翻译： OFDMA系统中的前缀
公开(公告)号：US08340072B2
公开(公告)日：2012-12-25
申请号：US13114579
申请日：2011-05-24
申请人： Jianglei Ma , Hang Zhang , Wen Tong , Ming Jia , Peiying Zhu , Mo-Han Fong
发明人： Jianglei Ma , Hang Zhang , Wen Tong , Ming Jia , Peiying Zhu , Mo-Han Fong
IPC分类号： H04W72/04
CPC分类号： H04L27/2692 , H04B7/02 , H04B7/0452 , H04L5/0007 , H04L5/0023 , H04L5/0048 , H04L7/043 , H04L27/2613 , H04L27/265 , H04L27/2655 , H04L27/2686 , H04W24/02
摘要： The present invention provides a preamble that is inserted into an OFDMA frame and has a common sequence for all the base stations participating in a transmission. The subscriber station performs fine synchronization using the common sequence on the common preamble, and the resulting peaks will provide the locations of candidate base stations. The base station specific search is then performed in the vicinities of those peaks by using base station specific pseudo-noise sequences. With this two stage cell search, the searching window is drastically reduced. The preamble is matched to known values by a respective receiver to decode the signals and permit multiple signals to be transferred from the transmitter to the receiver. The preamble may comprise two parts, Preamble-I and Preamble-2, which may be used in different systems, including multioutput, multi-input (MIMO) systems.
摘要翻译：本发明提供插入到OFDMA帧中并具有参与传输的所有基站的公共序列的前同步码。用户站使用公共前导码上的公共序列执行精细同步，并且所得到的峰值将提供候选基站的位置。然后通过使用基站专用伪噪声序列，在那些峰附近执行基站专用搜索。通过这两个阶段的单元格搜索，搜索窗口大大减少。前导码由相应的接收机与已知值匹配以对信号进行解码，并允许多个信号从发射机传送到接收机。前导码可以包括两个部分，即前导码1和前导码2，其可以在不同的系统中使用，包括多输入多输入（MIMO）系统。

12. 发明授权

US08213292B2 System access and synchronization methods for MIMO OFDM communications systems and physical layer packet and preamble design 有权
标题翻译：用于MIMO OFDM通信系统和物理层分组和前导码设计的系统接入和同步方法
公开(公告)号：US08213292B2
公开(公告)日：2012-07-03
申请号：US12269432
申请日：2008-11-12
申请人： Jianglei Ma , Ming Jia , Peiying Zhu , Wen Tong
发明人： Jianglei Ma , Ming Jia , Peiying Zhu , Wen Tong
IPC分类号： H04J11/00
CPC分类号： H04W36/08 , H04B7/022 , H04B7/04 , H04B7/0413 , H04B7/0667 , H04B7/0697 , H04J11/0069 , H04L5/0023 , H04L5/0037 , H04L5/0048 , H04L7/0008 , H04L27/2602 , H04L27/2607 , H04L27/2613 , H04L27/2627 , H04L27/2628 , H04L27/2663 , H04L27/2665 , H04L27/2672 , H04L27/2675
摘要： A method and apparatus are provided for performing acquisition, synchronization and cell selection within an MIMO-OFDM communication system. A coarse synchronization is performed to determine a searching window. A fine synchronization is then performed by measuring correlations between subsets of signal samples, whose first signal sample lies within the searching window, and known values. The correlations are performed in the frequency domain of the received signal. In a multiple-output OFDM system, each antenna of the OFDM transmitter has a unique known value. The known value is transmitted as pairs of consecutive pilot symbols, each pair of pilot symbols being transmitted at the same subset of sub-carrier frequencies within the OFDM frame.
摘要翻译：提供了一种用于在MIMO-OFDM通信系统内执行采集，同步和小区选择的方法和装置。执行粗同步以确定搜索窗口。然后通过测量其第一信号样本位于搜索窗口内的信号样本的子集与已知值之间的相关性来执行精细同步。相关性在接收信号的频域中进行。在多输出OFDM系统中，OFDM发射机的每个天线具有唯一的已知值。已知值作为连续导频符号对发送，每对导频符号在OFDM帧内的子载波频率的相同子集上发送。

13. 发明授权

US08189455B1 Coding information for communication over an orthogonal frequency division multiple access (OFDMA)-based wireless link 有权
标题翻译：用于通过基于正交频分多址（OFDMA）的无线链路进行通信的编码信息
公开(公告)号：US08189455B1
公开(公告)日：2012-05-29
申请号：US12266772
申请日：2008-11-07
申请人： Jianglei Ma , Ming Jia , Mo-Han Fong , Peiying Zhu , Wen Tong
发明人： Jianglei Ma , Ming Jia , Mo-Han Fong , Peiying Zhu , Wen Tong
IPC分类号： H04J11/00 , H04B1/00
CPC分类号： H04J11/0023 , H04J13/0062 , H04J13/22
摘要： In a wireless access network, a transmitter provides a pool of sequences having a reduced peak-to-average power ratio. Information to be transmitted is mapped to a selected at least one of the pool of sequences. The selected at least one sequence is transmitted over an orthogonal frequency division multiple access (OFDMA)-based wireless link of the wireless access network.
摘要翻译：在无线接入网络中，发射机提供具有降低的峰值与平均功率比的序列池。要发送的信息被映射到所选择的序列池中的至少一个。所选择的至少一个序列通过无线接入网络的基于正交频分多址（OFDMA）的无线链路传输。

14. 发明授权

US08170155B2 Method and apparatus for channel quality measurements 有权
标题翻译：用于信道质量测量的方法和装置
公开(公告)号：US08170155B2
公开(公告)日：2012-05-01
申请号：US12839836
申请日：2010-07-20
申请人： Ming Jia , Jianglei Ma , Peiying Zhu , Dong-Sheng Yu , Wen Tong
发明人： Ming Jia , Jianglei Ma , Peiying Zhu , Dong-Sheng Yu , Wen Tong
IPC分类号： H03D1/00 , H04L27/06
CPC分类号： H04L1/0631 , H04L1/0003 , H04L1/0009 , H04L1/0036 , H04L1/208 , H04L5/0023 , H04L5/0048 , H04L5/0053 , H04L25/0226 , H04L25/0236 , H04L25/03318 , H04L25/067
摘要： A method and apparatus are provided for measuring channel quality over which has been transmitted a sequence of symbols produced by encoding and constellation mapping a source data element sequence. The method includes receiving a sequence of received symbols over the channel whose quality is to be measured. The sequence of received symbols is de-mapped based on a first channel quality indicator previously transmitted to a transmitter of the sequence of symbols. The method also includes decoding the de-mapped symbols to produce a decoded output sequence. In some embodiments, the decoding may be based on the first channel quality indicator. The method also includes re-encoding the decoded output sequence to produce a re-encoded output sequence. The method also includes correlating the de-mapped symbols with the re-encoded output sequence to produce a second channel quality indicator. The second channel quality indicator is transmitted to the transmitter to adaptively select a type of mapping based on the second channel quality indicator. In some embodiments, the transmitter may adaptively select a type of encoding based on the second channel quality indicator.
摘要翻译：提供了一种用于测量已经发送了通过对源数据元素序列进行编码和星座映射而产生的符号序列的信道质量的方法和装置。该方法包括在其质量要被测量的信道上接收接收到的符号序列。基于先前发送到符号序列的发射机的第一信道质量指示符来对接收符号的序列进行解映射。该方法还包括对解映射符号进行解码以产生解码的输出序列。在一些实施例中，解码可以基于第一信道质量指示符。该方法还包括对解码的输出序列进行重新编码以产生重新编码的输出序列。该方法还包括将去映射符号与重新编码的输出序列相关联以产生第二信道质量指示符。第二信道质量指示符被发送到发射机，以基于第二信道质量指示符自适应地选择一种类型的映射。在一些实施例中，发射机可以基于第二信道质量指示符自适应地选择一种类型的编码。

15. 发明授权

US08169994B2 System and method for frequency division multiple access communications 有权
标题翻译：用于频分多址通信的系统和方法
公开(公告)号：US08169994B2
公开(公告)日：2012-05-01
申请号：US11996463
申请日：2006-07-27
申请人： Jianglei Ma , Ming Jia , Wen Tong , Peiying Zhu , Hua Xu , Moussa Abdi , Evelyne LeStrat , Sarah Boumendil
发明人： Jianglei Ma , Ming Jia , Wen Tong , Peiying Zhu , Hua Xu , Moussa Abdi , Evelyne LeStrat , Sarah Boumendil
IPC分类号： H04B7/208
CPC分类号： H04B7/2621 , H04L5/0007 , H04L5/0023 , H04L5/0051
摘要： A method and system for wireless frequency division multiple access communications in the uplink and/or downlink directions, having an improved pilot insertion scheme for single carrier based communications is provided. A first time duration for transmission of a data payload block (7) is established, and the transmission is processed using a first frequency domain or a time domain. A second time duration for transmission of at least one pilot block (70) is established, and the transmission is processed using a second frequency domain or the time domain, the second time duration (70) is not greater than the first time duration (7).
摘要翻译：提供了一种用于上行链路和/或下行链路方向上的无线频分多址通信的方法和系统，其具有用于基于单载波的通信的改进的导频插入方案。建立用于发送数据有效载荷块（7）的第一时间段，并且使用第一频域或时域处理传输。建立用于发送至少一个导频块（70）的第二持续时间，并且使用第二频域或时域处理该传输，第二持续时间（70）不大于第一持续时间（7））。

16. 发明授权

US08116412B1 Modulation division multiple access 有权
公开(公告)号：US08116412B1
公开(公告)日：2012-02-14
申请号：US11942492
申请日：2007-11-19
申请人： Ming Jia , Jianglei Ma , Peiying Zhu , Wen Tong , Curt Dodd
发明人： Ming Jia , Jianglei Ma , Peiying Zhu , Wen Tong , Curt Dodd
IPC分类号： H03D1/00
CPC分类号： H03C3/00 , H04L25/0226 , H04L27/3488
摘要： The present invention employs hierarchical modulation to simultaneously transmit information on different modulation layers using a carrier RF signal. Initially, first data to be transmitted is assigned to a first modulation layer and second data is assigned to a second modulation layer. In one embodiment of the present invention, the first and second data are assigned based on reliability criteria. The first and second modulation layers are hierarchical modulation layers of the carrier RF signal. Once assigned, the first data is transmitted using the first modulation layer of the carrier RF signal and the second data is transmitted using the second modulation layer of the carrier RF signal. In one embodiment of the present invention, information may be transmitted to one end user using one modulation layer, and information may be transmitted to a different end user using a different modulation layer.

17. 发明授权

US08050697B2 Multi-antenna scheduling system and method 有权
标题翻译：多天线调度系统及方法
公开(公告)号：US08050697B2
公开(公告)日：2011-11-01
申请号：US11843098
申请日：2007-08-22
申请人： Ming Jia , Jianglei Ma , Jianming Wu , Peiying Zhu , Wen Tong
发明人： Ming Jia , Jianglei Ma , Jianming Wu , Peiying Zhu , Wen Tong
IPC分类号： H04B7/00
CPC分类号： H04W72/082 , H04B7/0417 , H04B7/0443 , H04B7/0452 , H04B7/0632 , H04W72/1231
摘要： A wireless communication method and system using virtual MIMO (“V-MIMO”) are provided. Post processing signal to interference and noise ratios (“SINR”) for a plurality of signals corresponding to a plurality of mobile terminals arranged as a V-MIMO group are estimated. The one of the plurality of mobile terminals having the highest post processing SINR is selected. Wireless communication for the selected mobile terminal is scheduled. The signal corresponding to the selected mobile terminal is cancelled. Post processing signal to interference and noise ratios (“SINR”) for the signals corresponding to the remaining mobile terminals is re-estimated. The one of the remaining mobile terminals having the highest post processing SINR is selected. Wireless communication for the selected remaining mobile terminal is scheduled.
摘要翻译：提供了一种使用虚拟MIMO（“V-MIMO”）的无线通信方法和系统。估计与排列为V-MIMO组的多个移动终端对应的多个信号的后处理信号与干扰和噪声比（“SINR”）。选择具有最高后处理SINR的多个移动终端中的一个。安排所选移动终端的无线通信。对应于所选移动终端的信号被取消。重新估计对应于其余移动终端的信号的后处理信号与干扰和噪声比（“SINR”）。选择具有最高后处理SINR的剩余移动终端中的一个。调度所选择的剩余移动终端的无线通信。

18. 发明申请

US20110164878A1 METHOD AND SYSTEM FOR IMPLEMENTING A WIRELESS NETWORK 有权
标题翻译：实现无线网络的方法和系统
公开(公告)号：US20110164878A1
公开(公告)日：2011-07-07
申请号：US12830224
申请日：2010-07-02
申请人： Jianglei Ma , Hang Zhang , Wen Tong , Ming Jia , Peiying Zhu
发明人： Jianglei Ma , Hang Zhang , Wen Tong , Ming Jia , Peiying Zhu
IPC分类号： H04B10/00 , H04W4/00 , H04J14/00
CPC分类号： H04B10/1149 , H04W84/047 , H04W88/085 , H04W92/20 , Y02D70/142 , Y02D70/168 , Y02D70/46
摘要： Aspects of the present invention provide a multi-band hybrid Gigabit wireless communication system which is enabled by a number of different complementary access technologies to realize ubiquitous hyper-connectivity, true broadband, seamless operation and low power consumption. The system is capable of serving fixed, nomadic and mobile scenarios. The multi-band wireless system is a low power wireless system which operates in different frequency bands covering the spectrum from radio wave to optical wave by making use of both regulated bandwidths and unregulated bandwidths. Using low power distributed antenna and low power indoor and outdoor antennas enables the use of unregulated bandwidths as well as regulated bandwidths as the low power nature of the signals reduces the possibility of interference with the regulated use of the signals.
摘要翻译：本发明的方面提供了一种多频带混合千兆无线通信系统，其通过多种不同的互补接入技术来实现无处不在的超连接，真正的宽带，无缝操作和低功耗。该系统能够提供固定，游牧和移动场景。多频带无线系统是一种低功率无线系统，其通过利用调节带宽和不受限制的带宽来操作，覆盖从无线电波到光波的频谱的不同频带。使用低功率分布式天线和低功率室内和室外天线使得可以使用不受监管的带宽以及调节带宽，因为信号的低功耗特性降低了干扰信号调节使用的可能性。

19. 发明申请

US20110164491A1 METHOD AND SYSTEM FOR COMBINING OFDM AND TRANSFORMED OFDM 有权
标题翻译：用于组合OFDM和变换OFDM的方法和系统
公开(公告)号：US20110164491A1
公开(公告)日：2011-07-07
申请号：US13047259
申请日：2011-03-14
申请人： Jianglei Ma , Wen Tong , Ming Jia , Hua Xu , Peiying Zhu , Hang Zhang
发明人： Jianglei Ma , Wen Tong , Ming Jia , Hua Xu , Peiying Zhu , Hang Zhang
IPC分类号： H04J11/00
CPC分类号： H04L27/263 , H04L1/0003 , H04L1/0009 , H04L5/0007 , H04L5/0023 , H04L5/0044 , H04L5/0096 , H04L27/2613 , H04L27/2628 , H04L27/2634 , H04L27/2646
摘要： Methods and systems are provided that enable an OFDM transmitter to be used for transmitting conventional OFDM or a form of transformed OFDM. A technique is provided for transforming a coded and modulated sequence of samples prior to an IFFT that enables the transformed sequence of samples to be transmitted using conventional OFDM or transformed OFDM. The selection of a transform function for transforming the coded and modulated sequence of samples may be based on optimizing the transform function for particular operating conditions between the transmitter and receiver. In some embodiments of the invention OFDM and time transformed OFDM are multiplexed in time and/or frequency in a transmission frame. In some embodiments of the invention a pilot pattern is provided in which the pilot are sent using OFDM and data is sent using OFDM and/or transformed OFDM.
摘要翻译：提供了使OFDM发射机能够用于传输常规OFDM或变换OFDM形式的方法和系统。提供了一种用于在IFFT之前变换样本的编码和调制序列的技术，其使得能够使用常规OFDM或变换OFDM来发送变换的样本序列。用于变换样本的编码和调制序列的变换函数的选择可以基于优化发射机和接收机之间的特定操作条件的变换函数。在本发明的一些实施例中，OFDM和时变OFDM在传输帧中以时间和/或频率被复用。在本发明的一些实施例中，提供了导频模式，其中使用OFDM发送导频，并且使用OFDM和/或经变换的OFDM发送数据。

20. 发明授权

US07929407B2 Method and system for combining OFDM and transformed OFDM 有权
标题翻译：用于组合OFDM和变换OFDM的方法和系统
公开(公告)号：US07929407B2
公开(公告)日：2011-04-19
申请号：US11909567
申请日：2006-03-30
申请人： Jianglei Ma , Wen Tong , Ming Jia , Hua Xu , Peiying Zhu , Hang Zhang
发明人： Jianglei Ma , Wen Tong , Ming Jia , Hua Xu , Peiying Zhu , Hang Zhang
IPC分类号： H04J11/00 , H04J1/00 , H03C7/02 , H04K1/10
CPC分类号： H04L27/263 , H04L1/0003 , H04L1/0009 , H04L5/0007 , H04L5/0023 , H04L5/0044 , H04L5/0096 , H04L27/2613 , H04L27/2628 , H04L27/2634 , H04L27/2646
摘要： Methods and systems are provided that enable an OFDM transmitter to be used for transmitting conventional OFDM or a form of transformed OFDM. A technique is provided for transforming a coded and modulated sequence of samples prior to an IFFT that enables the transformed sequence of samples to be transmitted using conventional OFDM or transformed OFDM. The selection of a transform function for transforming the coded and modulated sequence of samples may be based on optimizing the transform function for particular operating conditions between the transmitter and receiver. In some embodiments of the invention OFDM and time transformed OFDM are multiplexed in time and/or frequency in a transmission frame. In some embodiments of the invention a pilot pattern is provided in which the pilot are sent using OFDM and data is sent using OFDM and/or transformed OFDM.
摘要翻译：提供了使OFDM发射机能够用于传输常规OFDM或变换OFDM形式的方法和系统。提供了一种用于在IFFT之前变换样本的编码和调制序列的技术，其使得能够使用常规OFDM或变换OFDM来发送变换的样本序列。用于变换样本的编码和调制序列的变换函数的选择可以基于优化发射机和接收机之间的特定操作条件的变换函数。在本发明的一些实施例中，OFDM和时变OFDM在传输帧中以时间和/或频率被复用。在本发明的一些实施例中，提供了导频模式，其中使用OFDM发送导频，并且使用OFDM和/或经变换的OFDM发送数据。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式