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公开(公告)号：US20090061766A1
公开(公告)日：2009-03-05
申请号：US12229977
申请日：2008-08-28
IPC分类号： H04B7/15
CPC分类号： H04B7/15585
摘要： A system and method for channel estimation and echo cancellation in wireless system repeaters. A repeater with improved echo cancellation comprises an input radio control element having a receiving antenna and an output radio control element having a transmitting antenna; a power amplifier connected between the input radio control element and the output radio control element; and a signal processing unit connected between the input radio control element and the output radio control element. The signal processing unit is configured to estimate the communication channel from the transmitting antenna to the receiving antenna to produce a channel estimation. The signal processing unit is further configured to perform echo cancellation based on the channel estimation.
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2.发明授权Apparatus and method for channel estimation and echo cancellation in a wireless repeater 有权无线中继器中的信道估计和回波消除的装置和方法公开(公告)号：US07894768B2
公开(公告)日：2011-02-22
申请号：US12229977
申请日：2008-08-28
IPC分类号： H04Q7/32
CPC分类号： H04B7/15585
摘要： A system and method for channel estimation and echo cancellation in wireless system repeaters. A repeater with improved echo cancellation comprises an input radio control element having a receiving antenna and an output radio control element having a transmitting antenna; a power amplifier connected between the input radio control element and the output radio control element; and a signal processing unit connected between the input radio control element and the output radio control element. The signal processing unit is configured to estimate the communication channel from the transmitting antenna to the receiving antenna to produce a channel estimation. The signal processing unit is further configured to perform echo cancellation based on the channel estimation.
摘要翻译： 一种用于无线系统中继器中的信道估计和回波消除的系统和方法。 具有改善的回波消除的中继器包括具有接收天线的输入无线电控制元件和具有发射天线的输出无线电控制元件; 连接在所述输入无线电控制元件和所述输出无线电控制元件之间的功率放大器; 以及连接在输入无线电控制元件和输出无线电控制元件之间的信号处理单元。 信号处理单元被配置为估计从发射天线到接收天线的通信信道，以产生信道估计。 信号处理单元还被配置为基于信道估计来执行回波消除。
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3.发明授权Apparatus and method for channel estimation and echo cancellation in a wireless repeater 失效无线中继器中的信道估计和回波消除的装置和方法公开(公告)号：US07596352B2
公开(公告)日：2009-09-29
申请号：US11145619
申请日：2005-06-06
IPC分类号： H04Q7/20
CPC分类号： H04B7/15585
摘要： A system and method for channel estimation and echo cancellation in wireless system repeaters. A repeater with improved echo cancellation comprises an input radio control element having a receiving antenna and an output radio control element having a transmitting antenna; a power amplifier connected between the input radio control element and the output radio control element; and a signal processing unit connected between the input radio control element and the output radio control element. The signal processing unit is configured to estimate the communication channel from the transmitting antenna to the receiving antenna to produce a channel estimation. The signal processing unit is further configured to perform echo cancellation based on the channel estimation.
摘要翻译： 一种用于无线系统中继器中的信道估计和回波消除的系统和方法。 具有改善的回波消除的中继器包括具有接收天线的输入无线电控制元件和具有发射天线的输出无线电控制元件; 连接在所述输入无线电控制元件和所述输出无线电控制元件之间的功率放大器; 以及连接在输入无线电控制元件和输出无线电控制元件之间的信号处理单元。 信号处理单元被配置为估计从发射天线到接收天线的通信信道，以产生信道估计。 信号处理单元还被配置为基于信道估计来执行回波消除。
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4.发明申请System and method for performing precoding in a wireless communication system 有权用于在无线通信系统中执行预编码的系统和方法公开(公告)号：US20080080637A1
公开(公告)日：2008-04-03
申请号：US11824832
申请日：2007-07-03
CPC分类号： H04B7/0697 , H04B7/0617 , H04B7/0639 , H04W52/42
摘要： A base station capable of performing precoding in a wireless communication system is provided. The base station includes a plurality of codebooks and a codebook selector. Each codebook comprises a plurality of composite precoding matrices that are generated based on a corresponding diversity precoding matrix. The codebook selector is operable to select one of the codebooks for use in a communication session with a subscriber station.
摘要翻译： 提供一种能够在无线通信系统中执行预编码的基站。 基站包括多个码本和码本选择器。 每个码本包括基于相应的分集预编码矩阵生成的多个复合预编码矩阵。 码本选择器可操作以选择用于与用户站的通信会话中的一个码本。
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5.发明申请Method and System for Scheduling Users Based on User-Determined Ranks In A MIMO System 有权基于MIMO系统中用户确定等级的用户调度方法和系统公开(公告)号：US20070183380A1
公开(公告)日：2007-08-09
申请号：US11620401
申请日：2007-01-05
IPC分类号： H04Q7/24
CPC分类号： H04L1/1893 , H04B7/0452 , H04B7/0602 , H04B7/0691 , H04L1/0025 , H04L1/0026 , H04L1/06 , H04L1/1816 , H04L1/1835
摘要： In a wireless network comprising a plurality of subscriber stations and a base station capable of providing service to the subscriber stations, a subscriber station is provided that includes a rank selector and a scheduling data reporter. The rank selector is operable to select a rank for the subscriber station. The rank is operable to identify a number of antennas for transmitting data streams from the base station to the subscriber station. The scheduling data reporter is operable to report scheduling data, including the rank, to the base station.
摘要翻译： 在包括多个用户站和能够向订户站提供服务的基站的无线网络中，提供了包括秩选择器和调度数据报告者的用户站。 等级选择器可操作以选择用户台的等级。 该等级可操作地识别用于从基站向用户站发送数据流的多个天线。 调度数据报告器可操作以向基站报告包括秩的调度数据。
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6.发明授权System and method for performing precoding in a wireless communication system 有权用于在无线通信系统中执行预编码的系统和方法公开(公告)号：US08503560B2
公开(公告)日：2013-08-06
申请号：US11824832
申请日：2007-07-03
IPC分类号： H04B7/02
CPC分类号： H04B7/0697 , H04B7/0617 , H04B7/0639 , H04W52/42
摘要： A base station capable of performing precoding in a wireless communication system is provided. The base station includes a plurality of codebooks and a codebook selector. Each codebook comprises a plurality of composite precoding matrices that are generated based on a corresponding diversity precoding matrix. The codebook selector is operable to select one of the codebooks for use in a communication session with a subscriber station.
摘要翻译： 提供一种能够在无线通信系统中执行预编码的基站。 基站包括多个码本和码本选择器。 每个码本包括基于相应的分集预编码矩阵生成的多个复合预编码矩阵。 码本选择器可操作以选择用于与用户站的通信会话中的一个码本。
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7.发明授权Method and system for performing a soft handoff in an OFDMA wireless network 有权用于在OFDMA无线网络中执行软切换的方法和系统公开(公告)号：US07885660B2
公开(公告)日：2011-02-08
申请号：US11215330
申请日：2005-08-30
IPC分类号： H04Q7/20
摘要： A method for performing a soft handoff for a mobile station from a source base station to a target base station in an Orthogonal Frequency-Division Multiple Access (OFDMA) wireless network that is capable of communicating with a plurality of mobile stations in a coverage area of the OFDMA wireless network is provided. The method includes determining whether a relative delay between receipt of a source pilot signal from a source base station and receipt of a target pilot signal from a target base station is less than a downlink coherence time. When the relative delay is less than the downlink coherence time, the soft handoff is performed.
摘要翻译： 一种用于在正交频分多址（OFDMA）无线网络中从源基站到目标基站执行移动台的软越区切换的方法，其能够与覆盖区域中的多个移动站进行通信 提供了OFDMA无线网络。 该方法包括确定从源基站接收源导频信号和从目标基站接收目标导频信号之间的相对延迟是否小于下行链路相干时间。 当相对延迟小于下行链路相干时间时，执行软切换。
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8.发明申请公开(公告)号：US20090028264A1
公开(公告)日：2009-01-29
申请号：US12155319
申请日：2008-06-02
IPC分类号： H04B7/02
CPC分类号： H04L1/0606 , H04B7/0456 , H04B7/0486 , H04B7/0671 , H04L1/0668 , H04L1/08 , H04L1/1819 , H04L5/0023 , H04L25/03898 , H04L27/2626
摘要： In this invention, several open-loop solutions that encompass the small delay CDD codeword cycling, codeword cycling between different re-transmissions of both small and large delay CDD are proposed. In addition, an open-loop codeword cycling method for SFBC+FSTD scheme, as well as its extension to SFBC+FSTD based HARQ, are proposed. In one method, a plurality of information bits are encoded, scrambled and modulated to generate a plurality of modulation symbols. The plurality of modulation symbols are mapped onto the subcarriers in at least one transmission layer of a transmission resource. The modulation symbols are then precoded by using a matrix for cyclic delay diversity and a set of codewords from a certain codebook to generate a plurality of precoded symbols. The codewords are cycled for every a certain number of subcarriers. Finally, the precoded symbols are transmitted via a plurality of transmission antennas.
摘要翻译： 在本发明中，提出了包含小延迟CDD码字循环，小型和大型延迟CDD的不同重新传输之间的码字循环的几种开环解决方案。 此外，提出了用于SFBC + FSTD方案的开环码字循环方法，以及其对基于SFBC + FSTD的HARQ的扩展。 在一种方法中，多个信息比特被编码，加扰和调制以产生多个调制符号。 多个调制符号被映射到传输资源的至少一个传输层中的子载波上。 然后通过使用用于循环延迟分集的矩阵和来自某个码本的一组码字来生成多个预编码符号来对调制符号进行预编码。 每个一定数量的副载波循环码字。 最后，预编码符号经由多个发送天线发送。
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公开(公告)号：US20080151831A1
公开(公告)日：2008-06-26
申请号：US11806660
申请日：2007-06-01
申请人： Farooq Khan , Cornelius Van Rensburg , Zhouyue Pi , Jiann-An Tsai , Yinong Ding
发明人： Farooq Khan , Cornelius Van Rensburg , Zhouyue Pi , Jiann-An Tsai , Yinong Ding
IPC分类号： H04Q7/30
CPC分类号： H04L1/0656 , H04L1/0668 , H04L1/1812 , H04L1/1845 , H04L5/0007 , H04L5/0016 , H04L5/0023
摘要： A multi-user, multiple input, multiple output network and process for transmitting data in a communication system encompassing multiple users, contemplates the steps of: a first user transmitting a first transmission frame to a base transceiver station while a second user simultaneously transmits a third transmission frame to the base station; the first and second users simultaneously transmit a second transmission frame and a fourth transmission frames respectively to the base station, with the second transmission frame being an orthogonally spread version of the first transmission frame, and the fourth transmission frame being an orthogonally spread version of the second transmission frame.
摘要翻译： 用于在包含多个用户的通信系统中传输数据的多用户，多输入，多输出网络和过程考虑了以下步骤：第一用户将第一传输帧发送到基站收发器，而第二用户同时发送第三个 传输帧到基站; 第一和第二用户同时将第二传输帧和第四传输帧发送到基站，其中第二传输帧是第一传输帧的正交扩展版本，第四传输帧是正交扩展版本的 第二传输帧。
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10.发明授权Apparatus and method using multiple modulation schemes in an OFDM/OFDMA wireless network 有权在OFDM / OFDMA无线网络中使用多个调制方案的装置和方法公开(公告)号：US09203669B2
公开(公告)日：2015-12-01
申请号：US11296783
申请日：2005-12-07
CPC分类号： H04L27/2608 , H04L5/023 , H04L27/0008
摘要： A flexible and scalable deployment of orthogonal frequency division multiplexing (OFDM) technology in a mobile cellular system, including a system that deploys multiple channels within a common base station, in which different modulation techniques are used to compensate for adjacent-channel interference.
摘要翻译： 在移动蜂窝系统中灵活且可扩展地部署正交频分复用（OFDM）技术，包括在公共基站内部署多个信道的系统，其中使用不同的调制技术来补偿相邻信道干扰。
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