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71. 发明申请

US20090252104A1 Physical Layer Frame Format Design for Wideband Wireless Communications Systems 有权
标题翻译：宽带无线通信系统的物理层帧格式设计
公开(公告)号：US20090252104A1
公开(公告)日：2009-10-08
申请号：US12410883
申请日：2009-03-25
申请人： Hongyuan Zhang , Rohit U. Nabar , Arul Durai Murugan Palanivelu , Hui-Ling Lou , Songping Wu
发明人： Hongyuan Zhang , Rohit U. Nabar , Arul Durai Murugan Palanivelu , Hui-Ling Lou , Songping Wu
IPC分类号： H04W72/00 , H04L27/28
CPC分类号： H04L27/14 , H04L1/0025 , H04L5/0007 , H04L5/0092 , H04L27/0008 , H04L27/0012 , H04L27/2602
摘要： Systems and methods are provided for processing a payload portion of a received signal in a single carrier mode or a multiple carrier mode using a wireless channel receiver based on a portion of the received signal, where a signaling portion of the received signal is a single carrier signal. A single carrier signaling portion is received, and whether the payload portion of the signal is a single carrier signal or a multiple carrier signal is detected from the received single carrier signaling portion. The payload portion of the received signal is demodulated in a single carrier mode if the detecting determines that the payload portion of the received signal is a single carrier signal, and the payload portion of the received signal is demodulated in a multiple carrier mode if the detecting determines that the payload portion of the received signal is a multiple carrier signal. Data from the demodulated payload portion of the received signal is stored in a computer-readable memory.
摘要翻译：提供了系统和方法，用于基于接收信号的一部分，使用无线信道接收机以单载波模式或多载波模式处理接收信号的有效载荷部分，其中接收信号的信令部分是单载波信号。接收单载波信令部分，以及信号的有效载荷部分是单载波信号还是从所接收的单载波信令部分检测多载波信号。如果检测确定接收信号的有效载荷部分是单载波信号，则以单载波模式解调接收信号的有效载荷部分，并且如果检测到接收信号的有效载荷部分以多载波模式被解调确定接收信号的有效载荷部分是多载波信号。来自接收信号的解调有效载荷部分的数据被存储在计算机可读存储器中。

72. 发明申请

US20090097395A1 Beamforming Using Predefined Spatial Mapping Matrices 有权
标题翻译：使用预定义空间映射矩阵进行波束形成
公开(公告)号：US20090097395A1
公开(公告)日：2009-04-16
申请号：US12251834
申请日：2008-10-15
申请人： Hongyuan Zhang , Rohit U. Nabar
发明人： Hongyuan Zhang , Rohit U. Nabar
IPC分类号： H04J11/00
CPC分类号： H04B7/0456 , H04B7/0417 , H04B7/0617 , H04B7/0626 , H04B7/0632 , H04L1/0001
摘要： Systems and methods for transmitting packets to a receiver. In an implementation, the method includes storing, in a memory, a plurality of predefined spatial mapping matrices for use in a transmission of one or more packets to a receiver; sequentially transmitting one or more packets to the receiver, in which each of the sequential transmissions of one or more packets comprises using a different one of the plurality of predefined spatial mapping matrices stored in the memory; and selecting one of the plurality of predefined spatial mapping matrices stored in the memory for use in a subsequent transmission of one or more packets to the receiver, in which the selection of the one of the plurality of predefined spatial mapping matrices for use in the subsequent transmission is based on a quality of reception of the one or more data packets transmitted in each of the sequential transmissions
摘要翻译：用于将数据包发送到接收器的系统和方法。在实现中，该方法包括在存储器中存储多个预定义的空间映射矩阵，用于将一个或多个分组传输到接收机; 顺序地将一个或多个分组发送到接收机，其中一个或多个分组的顺序传输中的每一个包括使用存储在存储器中的多个预定空间映射矩阵中的不同的一个; 以及选择存储在所述存储器中的所述多个预定义的空间映射矩阵中的一个，用于将一个或多个分组的后续传输用于所述接收机，其中所述多个预定空间映射矩阵中的所述一个的选择用于随后的传输基于在每个顺序传输中发送的一个或多个数据分组的接收质量

73. 发明申请

US20090022128A1 ACCESS POINT WITH SIMULTANEOUS DOWNLINK TRANSMISSION OF INDEPENDENT DATA FOR MULTIPLE CLIENT STATIONS 有权
标题翻译：多个客户端的独立数据同步下行链路传输的接入点
公开(公告)号：US20090022128A1
公开(公告)日：2009-01-22
申请号：US12175526
申请日：2008-07-18
申请人： Rohit U. Nabar , Hongyuan Zhang , Hui-Ling Lou
发明人： Rohit U. Nabar , Hongyuan Zhang , Hui-Ling Lou
IPC分类号： H04Q7/24
CPC分类号： H04W72/0446 , H04B7/0452 , H04B7/0697 , H04L5/006 , H04L65/608 , H04W28/0215 , H04W72/048 , H04W74/06
摘要： A wireless network device comprises R modulation modules that receive R independent data streams, that modulate the R independent data streams, and that apply a multiplexing matrix to generate M modulated and multiplexed data streams, respectively, where R and M are integers greater than one. M summing modules sum portions of each of the M modulated and multiplexed data streams to generate M transmit data streams. M transmitters simultaneously transmit the M transmit data streams during a simultaneous downlink transmission (SDT) period.
摘要翻译：无线网络设备包括R调制模块，R调制模块接收R个独立数据流，调制R独立数据流，并且应用复用矩阵分别产生M个调制和复用的数据流，其中R和M是大于1的整数。 M个求和模块将M个调制和多路复用数据流中的每一个的部分相加以产生M个发送数据流。 M发射机在同时的下行链路传输（SDT）周期期间同时传输M个发送数据流。

74. 发明申请

US20090022093A1 WIRELESS NETWORK WITH SIMULTANEOUS UPLINK TRANSMISSION OF INDEPENDENT DATA FROM MULTIPLE CLIENT STATIONS 有权
标题翻译：无线网络同时上传从多个客户端的独立数据传输
公开(公告)号：US20090022093A1
公开(公告)日：2009-01-22
申请号：US12175501
申请日：2008-07-18
申请人： Rohit U. Nabar , Hongyuan Zhang , Hui-Ling Lou
发明人： Rohit U. Nabar , Hongyuan Zhang , Hui-Ling Lou
IPC分类号： H04Q7/00
CPC分类号： H04L5/0055 , H04B7/2618 , H04L5/0005 , H04W52/04 , H04W72/042 , H04W72/0446 , H04W88/08
摘要： A wireless network comprises R client stations that respectively generate simultaneous uplink transmission (SUT) data, where R is an integer greater than one. An access point (AP) receives SUT data from each of the R client stations during an SUT period.
摘要翻译：无线网络包括分别产生同时上行链路传输（SUT）数据的R个客户站，其中R是大于1的整数。接入点（AP）在SUT期间从每个R客户端接收SUT数据。

75. 发明申请

US20080266176A1 POWER AMPLIFIER ADJUSTMENT FOR TRANSMIT BEAMFORMING IN MULTI-ANTENNA WIRELESS SYSTEMS 有权
标题翻译：用于多天线无线系统中发射波束的功率放大器调整
公开(公告)号：US20080266176A1
公开(公告)日：2008-10-30
申请号：US12109257
申请日：2008-04-24
申请人： Rohit U. Nabar , Hongyuan Zhang
发明人： Rohit U. Nabar , Hongyuan Zhang
IPC分类号： H01Q3/00 , H03G3/00
CPC分类号： H04B7/0617 , H01Q3/40 , H03F3/245 , H03G3/3042 , H04B7/0408 , H04W16/28
摘要： One or more beamsteering matrices are applied to a plurality of signals to be transmitted via multiple antennas. The plurality of signals are provided to a plurality of power amplifiers coupled to the multiple antennas after applying the one or more beamsteering matrices to the plurality of signals. Signal energies are determined for the plurality of signals provided to the plurality of power amplifiers, and output power levels of the plurality of power amplifiers are adjusted based on the determined signal energies.
摘要翻译：一个或多个波束引导矩阵被施加到要经由多个天线发送的多个信号。在将一个或多个波束引导矩阵应用于多个信号之后，将多个信号提供给耦合到多个天线的多个功率放大器。对于提供给多个功率放大器的多个信号确定信号能量，并且基于所确定的信号能量来调整多个功率放大器的输出功率电平。

76. 发明授权

US08681884B2 Methods and apparatus for WLAN transmission 有权
公开(公告)号：US08681884B2
公开(公告)日：2014-03-25
申请号：US12846681
申请日：2010-07-29
申请人： Sudhir Srinivasa , Hongyuan Zhang , Rohit U. Nabar
发明人： Sudhir Srinivasa , Hongyuan Zhang , Rohit U. Nabar
IPC分类号： H04L27/28
摘要： In a method for generating a physical layer (PHY) data unit for transmission via a communication channel, a first set of modulation coding schemes (MCSs) and a second set of MCSs that correspond to a number of spatial streams and a number of encoders are provided. The first set of MCSs correspond to a first channel bandwidth and the second set of MCSs correspond to a second channel bandwidth, and the first set of MCSs is different than the second set of MCSs. An MCS is selected from the first set of MCSs when the PHY data unit is to be transmitted using a channel having the first channel bandwidth, and the MCS is selected from the second set of MCSs when the PHY data unit is to be transmitted using a channel having the second channel bandwidth. Information bits are encoded using the number of encoders and according to the selected MCS, and the encoded information bits are parsed into the number of spatial streams. The encoded information bits are modulated according to the MCS, and a plurality of OFDM symbols are formed based on the modulated encoded information bits.

77. 发明授权

US08644368B1 Transparent implicit beamforming in a communication system 有权
标题翻译：通信系统中的透明隐式波束成形
公开(公告)号：US08644368B1
公开(公告)日：2014-02-04
申请号：US12888310
申请日：2010-09-22
申请人： Hongyuan Zhang , Rohit U. Nabar , Srinivasa H. Garlapati
发明人： Hongyuan Zhang , Rohit U. Nabar , Srinivasa H. Garlapati
IPC分类号： H04B7/24 , H04B1/38
CPC分类号： H04B7/0421 , H04B7/0413 , H04B7/0456 , H04B7/0617 , H04B17/11 , H04B17/12 , H04B17/18 , H04B17/19
摘要： A method for beamforming in a multiple input, multiple output (MIMO) communication system includes receiving a non-sounding data unit, where the non-sounding data unit does not include an indication that the data unit is for estimating a MIMO communication channel, developing an estimate of a reverse channel in which the non-sounding data unit travels based on the non-sounding data unit, developing an estimate of a forward channel based on the estimate of the reverse channel, and developing a steering matrix to perform beamforming in the forward channel based on the estimate of the forward channel.
摘要翻译：一种用于多输入多输出（MIMO）通信系统中的波束成形的方法，包括：接收不发声数据单元，其中所述非探测数据单元不包括所述数据单元用于估计MIMO通信信道的指示，开发基于非探测数据单元，其中非探测数据单元行进的反向信道的估计，基于反向信道的估计开发正向信道的估计，以及开发导向矩阵以在基于前向信道的估计的前向信道。

78. 发明授权

US08571010B1 Simultaneous uplink transmission in a wireless network 有权
标题翻译：在无线网络中同时进行上行链路传输
公开(公告)号：US08571010B1
公开(公告)日：2013-10-29
申请号：US12840260
申请日：2010-07-20
申请人： Hongyuan Zhang , Rohit U. Nabar , Sudhir Srinivasa
发明人： Hongyuan Zhang , Rohit U. Nabar , Sudhir Srinivasa
IPC分类号： H04L12/28
CPC分类号： H04W56/0005 , H04B7/0413 , H04L1/0004 , H04L5/0048 , H04L5/0053 , H04L27/261 , H04L29/10 , H04W28/18 , H04W72/1278 , H04W72/1289 , H04W84/12
摘要： A method for use in a communication network includes generating a synchronization data unit to be transmitted to a plurality of devices, where the synchronization data unit specifies a space-time mapping parameter, and receiving a plurality of data units via a plurality of antennas, the plurality of data units are transmitted simultaneously from respective ones of the plurality of devices in accordance with the space-time mapping parameter.
摘要翻译：一种在通信网络中使用的方法包括：生成要发送到多个设备的同步数据单元，其中同步数据单元指定空时映射参数，以及经由多个天线接收多个数据单元，根据空时映射参数，从多个设备中的相应设备同时发送多个数据单元。

79. 发明授权

US08385390B2 PHY preamble format for wireless communication system 有权
标题翻译： PHY前导码格式用于无线通信系统
公开(公告)号：US08385390B2
公开(公告)日：2013-02-26
申请号：US12419460
申请日：2009-04-07
申请人： Hongyuan Zhang , Rohit U. Nabar , Songping Wu
发明人： Hongyuan Zhang , Rohit U. Nabar , Songping Wu
IPC分类号： H04B1/00
CPC分类号： H04W56/001 , H04B1/7073 , H04B1/70735 , H04B2201/7073 , H04J13/0014 , H04J13/10 , H04L5/0016 , H04L27/2613 , H04L27/262 , H04L27/2656 , H04L27/2662 , H04W56/00
摘要： A system and method of extracting data from data packets transmitted over a wireless network includes receiving a data packet having a preamble portion and a payload portion. The preamble portion is cross correlated with a first known spreading sequence to generate a first timing signal and the preamble portion is cross correlated with a second known spreading signal to generate a frame timing signal. An impulse is detected in the first timing signal and a first timing parameter is set based upon the detected impulse in the first timing signal. An impulse is detected in the frame timing signal and a frame timing parameter is set based upon the detected impulse in the frame timing signal. Data is extracted from the received payload portion according to the first timing parameter and the frame timing parameter.
摘要翻译：从通过无线网络发送的数据分组中提取数据的系统和方法包括：接收具有前同步码部分和有效载荷部分的数据分组。前导码部分与第一已知扩展序列交叉相关，以产生第一定时信号，并且前同步码部分与第二已知扩展信号相互相关，以产生帧定时信号。在第一定时信号中检测到脉冲，并且基于第一定时信号中检测到的脉冲设置第一定时参数。在帧定时信号中检测到脉冲，并且基于帧定时信号中检测到的脉冲设置帧定时参数。根据第一定时参数和帧定时参数从接收到的有效载荷部分提取数据。

80. 发明授权

US08331419B2 Efficient physical layer preamble format 有权
标题翻译：高效的物理层前导码格式
公开(公告)号：US08331419B2
公开(公告)日：2012-12-11
申请号：US12466984
申请日：2009-05-15
申请人： Hongyuan Zhang , Rohit U. Nabar , Songping Wu , Hui-Ling Lou , Quan Zhou
发明人： Hongyuan Zhang , Rohit U. Nabar , Songping Wu , Hui-Ling Lou , Quan Zhou
IPC分类号： H04B1/00
CPC分类号： H04B1/707 , H04J13/0014 , H04J13/10 , H04L27/2613 , H04L27/262
摘要： A method for generating a preamble of a data unit for transmission via a communication channel includes generating a first field of the preamble using one of a first sequence or a second sequence, such that the first sequence and the second sequence are complementary sequences such that a sum of out-of-phase aperiodic autocorrelation coefficients of the first sequence and the second sequence is zero; generating, using the other one of the first sequence or the second sequence, an indicator of a start of a second field of the preamble, the second field associated with channel estimation information, such that the indicator of the start of the second field immediately follows the first field; and generating the second field of the preamble.
摘要翻译：一种用于生成用于经由通信信道进行传输的数据单元的前同步码的方法包括使用第一序列或第二序列中的一个生成前导码的第一字段，使得第一序列和第二序列是互补序列，使得第一序列和第二序列的异相非周期自相关系数的和为零; 使用所述第一序列或所述第二序列中的另一个序列生成所述前导码的第二字段的开始的指示符，所述第二字段与信道估计信息相关联，使得所述第二字段的开始的指示符紧随其后第一场; 以及产生所述前导码的第二字段。

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