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1. 发明申请

US20120294392A1 SHORT GUARD INTERVAL WITH GREEN FIELD PREAMBLE 有权
标题翻译：短期保护与绿色领域的前景
公开(公告)号：US20120294392A1
公开(公告)日：2012-11-22
申请号：US13465347
申请日：2012-05-07
申请人： Hongyuan ZHANG
发明人： Hongyuan ZHANG
IPC分类号： H04L27/28 , H04W88/02
CPC分类号： H04L27/2607 , H04B1/04 , H04L5/0023 , H04L5/005 , H04L27/2605 , H04L27/2613 , H04L27/2626
摘要： Systems, methods, and other embodiments associated with a single stream wireless communication with a greenfield preamble that uses a short guard interval are described. According to one embodiment, a wireless communication device includes a receiver configured to receive an orthogonal frequency-division multiplexing (OFDM) signal. The OFDM signal includes a greenfield preamble. The wireless communication device includes an interval select logic configured to determine a type of guard intervals in the OFDM signal based, at least in part, on the greenfield preamble. The wireless communication device includes a signal processor configured to process the OFDM signal based, at least in part, on the type of the guard intervals as determined by the interval select logic.
摘要翻译：描述了与使用短保护间隔的绿田前导码的单流无线通信相关联的系统，方法和其他实施例。根据一个实施例，无线通信设备包括被配置为接收正交频分复用（OFDM）信号的接收机。 OFDM信号包括绿场前导码。无线通信设备包括间隔选择逻辑，其被配置为至少部分地基于绿场前导码来确定OFDM信号中的保护间隔的类型。无线通信设备包括被配置为至少部分地基于由间隔选择逻辑确定的保护间隔的类型来处理OFDM信号的信号处理器。

2. 发明申请

US20120269231A1 ANTENNA SELECTION AND TRAINING USING A SPATIAL SPREADING MATRIX FOR USE IN A WIRELESS MIMO COMMUNICATION SYSTEM 有权
标题翻译：使用空间扩展矩阵进行天线选择和训练，用于无线MIMO通信系统
公开(公告)号：US20120269231A1
公开(公告)日：2012-10-25
申请号：US13540257
申请日：2012-07-02
申请人： Hongyuan ZHANG , Rohit U. NABAR
发明人： Hongyuan ZHANG , Rohit U. NABAR
IPC分类号： H04B1/69
CPC分类号： H04B7/0417 , H04B7/0626 , H04B7/0639 , H04B7/0691 , H04B7/0874 , H04L1/0054 , H04L1/0071 , H04L1/06
摘要： Channel sounding information is received by a first communication device during an antenna selection training procedure. Antenna selection computations are performed, and the computations (i) assume that a second communication device uses a first Nss columns of a full-dimensional spatial spreading matrix to transmit the channel sounding information during the antenna selection training procedure, and (ii) accounts for the use, by the second communication device, of the first Nss columns of the full-dimensional spatial spreading matrix when transmitting Nss spatial streams. The full dimensional channel spatial spreading matrix has components i) a number of rows equal to a number, NT, of transmission chains to be used by the second communication device to transmit spatial data streams, and ii) a column dimension having a number of columns equal to NT, and Nss is less than both NT and NR, the number of receiving chains of the first communication device.
摘要翻译：在天线选择训练过程期间，第一通信设备接收信道探测信息。执行天线选择计算，并且计算（i）假设第二通信设备使用全维空间扩展矩阵的第一Nss列在天线选择训练过程期间发送信道探测信息，并且（ii）考虑当发送Nss个空间流时，由第二通信设备使用全维空间扩展矩阵的第一Nss个列。全维度信道空间扩展矩阵具有分量i）等于由第二通信设备用于传输空间数据流的传输链的数量NT，以及ii）具有多个列的列维数等于NT，Nss小于NT和NR，第一通信设备的接收链的数量。

3. 发明申请

US20080260002A1 ANTENNA SELECTION AND TRAINING USING A SPATIAL SPREADING MATRIX FOR USE IN A WIRELESS MIMO COMMUNICATION SYSTEM 有权
标题翻译：使用空间扩展矩阵进行天线选择和训练，用于无线MIMO通信系统
公开(公告)号：US20080260002A1
公开(公告)日：2008-10-23
申请号：US12105750
申请日：2008-04-18
申请人： Hongyuan ZHANG , Rohit U. Nabar
发明人： Hongyuan ZHANG , Rohit U. Nabar
IPC分类号： H04B1/707
CPC分类号： H04B7/0417 , H04B7/0626 , H04B7/0639 , H04B7/0691 , H04B7/0874 , H04L1/0054 , H04L1/0071 , H04L1/06
摘要： A wireless communication system and method uses a spatial spreading matrix to distribute the encoded spatial data streams to a number of transmit chains and further uses the spatial spreading matrix for antenna selection computation in a transmitter. The spatial spreading matrix is designed such that a receiver is able to know and utilize the spatial spreading matrix for computing transmission antenna selection, receiver antenna selection and joint transmission/receiving antenna selection. The use of this spatial spreading matrix for antenna selection computation provides increased accuracy in antenna selection for transmission of spatial data streams, where the number of spatial data streams is less than the number of transmit or receive chains between the transmitter and receiver, and the number of transmit or receive chains is less than the corresponding transmission or receiving antennas.
摘要翻译：无线通信系统和方法使用空间扩展矩阵将编码的空间数据流分配到多个发射链，并且还在发射机中使用空间扩展矩阵进行天线选择计算。设计空间扩展矩阵，使得接收机能够知道和利用空间扩展矩阵来计算发射天线选择，接收机天线选择和联合发射/接收天线选择。用于天线选择计算的这种空间扩展矩阵的使用在空间数据流的传输的天线选择中提供了更高的精度，其中空间数据流的数量小于发射机和接收机之间的发射或接收链的数量，的发射或接收链小于相应的发射或接收天线。

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