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1. 发明授权

US07826853B2 Cooperative base stations in wireless networks 有权
标题翻译：无线网络中的合作基站
公开(公告)号：US07826853B2
公开(公告)日：2010-11-02
申请号：US11934131
申请日：2007-11-02
申请人： Andreas F. Molisch , Lun Dong , Philip V. Orlik , Jinyun Zhang
发明人： Andreas F. Molisch , Lun Dong , Philip V. Orlik , Jinyun Zhang
IPC分类号： H04W72/00
CPC分类号： H04B7/0678 , H04B7/024 , H04B7/043 , H04B7/0443
摘要： The embodiments of the invention provide an adaptive method for base station cooperation in a wireless network. In a multi-user communications network that includes base stations, and in which each base station is associated with a cell, and in which each cell includes one or more mobile stations, each base station determines pre-coding matrices for full-cooperation, semi-cooperation and non-cooperation. Each base stations also determines a sum rate SRfull for full-cooperation, a sum rate SRsemi for semi-cooperation, and a sum rate SRnon for non-cooperation. Then, each base station selects the pre-coding for full-cooperation, the pre-coding matrices for semi cooperation, or the pre-coding matrices for non cooperation. Each base station transmits signals according to the selected pre-coding matrices.
摘要翻译：本发明的实施例提供了一种用于无线网络中的基站协作的自适应方法。在包括基站并且其中每个基站与小区相关联并且每个小区包括一个或多个移动站的多用户通信网络中，每个基站确定用于全协作的预编码矩阵，半合作不合作。每个基站还确定全面合作的总和速率，半合作的总和SRsemi和不合作的总和速率SRnon。然后，每个基站选择用于全协作的预编码，用于半合作的预编码矩阵，或者用于非合作的预编码矩阵。每个基站根据选择的预编码矩阵发送信号。

2. 发明申请

US20100254369A1 Cooperative Ultra-Reliable Wireless Communications 有权
标题翻译：合作超可靠无线通信
公开(公告)号：US20100254369A1
公开(公告)日：2010-10-07
申请号：US12419874
申请日：2009-04-07
申请人： Zhifeng Tao , Philip V. Orlik , Zafer Sahinoglu , Andreas F. Molisch , Jinyun Zhang
发明人： Zhifeng Tao , Philip V. Orlik , Zafer Sahinoglu , Andreas F. Molisch , Jinyun Zhang
IPC分类号： H04J3/16 , H04L27/28
CPC分类号： H04L1/1621 , H04L27/26 , H04L2001/0093 , H04L2001/0097
摘要： A network includes a master node (master) and a set of slave nodes (slaves). The network uses orthogonal frequency-division multiplexing (OFDM) and time division multiple access (TDMA) symbols on sub-carriers. During a first downlink transmission from the master to the set of slaves using downlinks and all of the sub-carriers, a broadcast polling packet including data packets for each slave and sub-carrier assignments for the slaves is broadcast. Each slave transmits simultaneously to the master using uplinks and the assigned sub-carriers, a first response packet after receiving the broadcast polling packet. The master then broadcasts using the downlinks and all of the sub-carriers, a group acknowledgement packet, wherein the broadcast polling packet, the response packet, and the group acknowledgement packet include one superframe in one communication cycle, and wherein the broadcasting on the downlinks and the transmitting on the uplinks are disjoint in time.
摘要翻译：网络包括主节点（主节点）和一组从节点（从节点）。该网络在子载波上使用正交频分复用（OFDM）和时分多址（TDMA）符号。在使用下行链路和所有子载波从主机到从机组的第一次下行链路传输期间，广播包括用于每个从机的数据分组的广播轮询分组和用于从机的子载波分配。每个从设备使用上行链路和分配的子载波同时发送到主设备，第一响应分组在接收到广播轮询分组之后。然后主机使用下行链路和所有子载波，一组确认分组广播，其中广播轮询分组，响应分组和组确认分组在一个通信周期中包括一个超帧，并且其中在下行链路上进行广播并且在上行链路上的发送在时间上是不相交的。

3. 发明授权

US07673219B2 Cooperative relay networks using rateless codes 失效
标题翻译：使用无码代码的合作中继网络
公开(公告)号：US07673219B2
公开(公告)日：2010-03-02
申请号：US11377711
申请日：2006-03-16
申请人： Andreas F. Molisch , Neelesh B. Mehta , Jonathan S. Yedidia , Jinyun Zhang
发明人： Andreas F. Molisch , Neelesh B. Mehta , Jonathan S. Yedidia , Jinyun Zhang
IPC分类号： G11C29/00
CPC分类号： H04B7/026 , H04B7/15592 , H04L1/06 , H04L1/0618 , H04L2001/0097 , H04W52/46
摘要： A system and method for communicating information in a wireless cooperative relay network of nodes, the nodes including a source, a set of relays, and a destination. The source broadcasts a code word encoded as a data stream using a rateless code. The relays receive the data stream, decode the data stream to recover the code word, and reencode and transmit the recovered code word as the data stream with the rateless code. The destination receives and decodes the reencoded data streams to recover the code word.
摘要翻译：一种用于在节点的无线协作中继网络中传送信息的系统和方法，所述节点包括源，一组中继和目的地。源使用无码代码广播编码为数据流的码字。继电器接收数据流，解码数据流以恢复代码字，并重新编码并发送恢复的代码字作为数据流与无码代码。目的地接收并解码重新编码的数据流以恢复码字。

4. 发明申请

US20090290563A1 Antenna/Beam Selection Training in MIMO Wireless LANs with Different Sounding Frames 有权
标题翻译：具有不同探测帧的MIMO无线局域网天线/光束选择训练
公开(公告)号：US20090290563A1
公开(公告)日：2009-11-26
申请号：US12293458
申请日：2006-03-30
申请人： Daqing Gu , Hongyuan Zhang , Jinyun Zhang , Andreas F. Molisch
发明人： Daqing Gu , Hongyuan Zhang , Jinyun Zhang , Andreas F. Molisch
IPC分类号： H04W84/12 , H04B7/02
CPC分类号： H04B7/0691 , H04B7/0608 , H04B7/061 , H04B7/0626 , H04B7/0634 , H04B7/0636 , H04B7/0695 , H04B7/0874 , H04B7/088 , H04W84/12
摘要： A method selects antennas in a multiple-input, multiple-output (MIMO) wireless local area network (WLAN) that includes a plurality of stations, and each station includes a set of antennas. Plural consecutive packets, received at a station, include plural consecutive sounding packets. Each sounding packet corresponds to a different subset of the set of antennas, and at least one of the plural consecutive packets includes a high throughput (HT) control field including a signal to initiate antenna selection and a number N indicative of a number of sounding packets which follow the at least one packet including the HT control field and which are to be used for antenna selection. A channel matrix is estimated based on a characteristic of the channel as indicated by the received N sounding packets, and a subset of antennas is selected according to the channel matrix. Station and computer program product embodiments include similar features.
摘要翻译：一种方法选择包括多个站的多输入多输出（MIMO）无线局域网（WLAN）中的天线，并且每个站包括一组天线。在站处接收的多个连续分组包括多个连续的探测分组。每个探测分组对应于该组天线的不同子集，并且多个连续分组中的至少一个分组包括高吞吐量（HT）控制字段，包括用于发起天线选择的信号和指示多个探测分组的数量N 其遵循至少一个包括HT控制字段并将用于天线选择的分组。基于由接收的N个探测分组指示的信道的特性来估计信道矩阵，并且根据信道矩阵选择天线的子集。站和计算机程序产品实施例包括类似的特征。

5. 发明申请

US20090129501A1 Optimal signaling and selection verification for transmit antenna selection with erroneous feedback 审中-公开
标题翻译：用于发送天线选择的错误反馈的最优信令和选择验证
公开(公告)号：US20090129501A1
公开(公告)日：2009-05-21
申请号：US11990650
申请日：2005-08-19
申请人： Neelesh B. Mehta , Yabo Li , Andreas F. Molisch , Jinyun Zhang
发明人： Neelesh B. Mehta , Yabo Li , Andreas F. Molisch , Jinyun Zhang
IPC分类号： H04L27/00
CPC分类号： H04B7/061
摘要： A method is provided for receiving data at a receiver via a communication channel from a transmitter having at least two transmitter antennas, the method including: receiving (S204) a codebook including an assignment of at least two respective codewords to the at least two transmitter antennas, the assignment being based at least in part on a characteristic of the communication channel; detecting a state of the communication channel by which the receiver can communicate with the transmitter; selecting (S206) at least one desired transmitter antenna from the at least two antennas based at least in part on the detected state of the communication channel; transmitting (S208) to the transmitter a codeword corresponding to the at least one desired transmitter antenna; and receiving (S210) data at the receiver transmitted by the transmitter.
摘要翻译：提供了一种用于经由来自具有至少两个发射机天线的发射机的通信信道在接收机处接收数据的方法，所述方法包括：接收（S204）包括至少两个相应码字的分配的码本到所述至少两个发射机天线所述分配至少部分地基于所述通信信道的特性; 检测接收机可以与发射机通信的通信信道的状态; 至少部分地基于所检测到的通信信道的状态，从所述至少两个天线中选择（S206）至少一个期望的发射机天线; 向所述发射机发送对应于所述至少一个所需发射机天线的码字（S208）; 以及在由发射机发送的接收机处接收（S210）数据。

6. 发明申请

US20090016372A1 Signaling and Training for Antenna Selection in OFDMA Networks 有权
标题翻译： OFDMA网络中天线选择的信令和训练
公开(公告)号：US20090016372A1
公开(公告)日：2009-01-15
申请号：US12117219
申请日：2008-05-08
申请人： Zhifeng Tao , Andreas F. Molisch , Philip V. Orlik , Jinyun Zhang , Shigeru Uchida , Kentarou Sawa
发明人： Zhifeng Tao , Andreas F. Molisch , Philip V. Orlik , Jinyun Zhang , Shigeru Uchida , Kentarou Sawa
IPC分类号： H04J3/16
CPC分类号： H04B7/0874 , H04B7/063 , H04B7/0691 , H04L5/0007
摘要： A method selects antennas in an OFDMA wireless network including a base station and a mobile station. The mobile station measures a channel state of a downlink in a downlink subframe using different subsets of available antennas, and selects a subset of receive antennas for downlink reception based on the channel states between the base station and the different subsets of antennas at the mobile station. The base station measures the channel state in an uplink using an uplink subframe received in the base station from the mobile station, and selects a subset of transmit antennas for mobile station's uplink transmission based on the channel states between the base station and different subset of antennas at the mobile station.
摘要翻译：一种方法选择包括基站和移动台的OFDMA无线网络中的天线。移动站使用不同的可用天线子集来测量下行链路子帧中的下行链路的信道状态，并且基于移动站的基站和不同的天线子集之间的信道状态来选择用于下行链路接收的接收天线的子集。基站使用来自移动站的基站中接收到的上行链路子帧来测量上行链路中的信道状态，并且基于基站和不同的天线子集之间的信道状态来选择用于移动台的上行链路传输的发射天线的子集在移动台。

7. 发明授权

US07443925B2 Pilot and data signals for MIMO systems using channel statistics 失效
标题翻译：使用信道统计的MIMO系统的导频和数据信号
公开(公告)号：US07443925B2
公开(公告)日：2008-10-28
申请号：US10895167
申请日：2004-07-20
申请人： Neelesh B. Mehta , Fadel F. Digham , Andreas F. Molisch , Jinyun Zhang
发明人： Neelesh B. Mehta , Fadel F. Digham , Andreas F. Molisch , Jinyun Zhang
IPC分类号： H04L27/04
CPC分类号： H04B7/0417 , H04B7/0443 , H04B7/0615 , H04B7/0626 , H04L1/0687 , H04W52/42
摘要： A method generates signals in a transmitter of a multiple-input, multiple-output wireless communications system. The transmitter includes Nt transmit antennas. A transmit covariance matrix Rt determined using statistical state information of a channel. The transmit covariance Rt matrix is decomposed using transmit eigenvalues Λt to obtain a transmit eigenspace Ut according to Rt=UtΛtU†t, where † is a Hermitian transpose. A pilot eigenspace Up is set equal to the transmit eigenspace Ut. A NtxTp block of pilot symbols Xp is generated from the pilot eigenspace Up and pilot eigenvalue Λp according to Xp=UpΛp1/2. A data eigenspace Ud is set equal to the transmit eigenspace Ut. In addition, a Nt×Nt data covariance matrix Qd is generated according to UdΛdU†d, where Λd are data eigenvalues. A NtxTd block of data symbols is generated, such that an average covariance of each of the columns in the block of data symbols Xd equals the data covariance matrix Qd. The block of pilot and data symbols form the signals to be transmitted.
摘要翻译：一种方法在多输入多输出无线通信系统的发射机中产生信号。发射机包括N T个发射天线。使用信道的统计状态信息确定发送协方差矩阵R t t。使用发射特征值λλt来分解发射协方差矩阵，以获得根据R t的t 1的发送本征空间U T t，其中†是Hermitian转置。其中†是Hermitian转置。飞行员本征空间U P p被设置为等于发射本征空间U T t。从导频符号空间U P1和导频特征值Lambda生成导频符号X P p P块的导频符号X P＆lt; P＆lt;＆lt; 根据X＆lt; p＆lt; p＆lt; p＆lt; p＆lt; p＆lt; p＆gt;＆lt; 1/2＆gt; 数据本征空间U D D被设置为等于发送本征空间U T t。另外，根据U SUB ambda is is is is is is is is is is is is is is is is is SUB is according according according according according according according according according according according according according according according according according according according according according according according according according 其中λλd是数据特征值。生成数据符号块，使得数据符号块X中的每个列的平均协方差为等于数据协方差矩阵Q 。导频块和数据符号块形成要传输的信号。

8. 发明申请

US20080031250A1 Energy accumulation in destination nodes of wireless relay networks 审中-公开
标题翻译：无线中继网络目的地节点的能量积累
公开(公告)号：US20080031250A1
公开(公告)日：2008-02-07
申请号：US11497987
申请日：2006-08-01
申请人： Neelesh B. Mehta , Raymond Yim , Andreas F. Molisch , Jinyun Zhang
发明人： Neelesh B. Mehta , Raymond Yim , Andreas F. Molisch , Jinyun Zhang
IPC分类号： H04L12/56
CPC分类号： H04L45/24 , H04L1/08 , H04L2001/0096 , H04W40/02 , Y02D30/20 , Y02D70/22 , Y02D70/30
摘要： A method for transmitting packets from a source node to a destination node via relay nodes of a wireless network. Packets are transmitted from the source node, along a route of relays nodes, to the destination node in a wireless network. Energy of the packets is accumulated only in the destination node by storing multiple versions of the packet. The packets are decoded in the destination node using the accumulated energy.
摘要翻译：一种用于经由无线网络的中继节点从源节点向目的地节点发送分组的方法。分组从源节点沿着中继节点的路由发送到无线网络中的目的地节点。通过存储分组的多个版本，分组的能量仅在目的地节点中累积。使用累积的能量在目的地节点中解码分组。

9. 发明授权

US07327983B2 RF-based antenna selection in MIMO systems 有权
标题翻译： MIMO系统中基于RF的天线选择
公开(公告)号：US07327983B2
公开(公告)日：2008-02-05
申请号：US10877686
申请日：2004-06-25
申请人： Neelesh B. Mehta , Pallav Sudarshan , Andreas F. Molisch , Jinyun Zhang
发明人： Neelesh B. Mehta , Pallav Sudarshan , Andreas F. Molisch , Jinyun Zhang
IPC分类号： H04B1/10 , H04B15/00
CPC分类号： H04B7/0417 , H01Q3/26 , H04B7/0626 , H04B7/0691 , H04B7/0697 , H04B7/0848 , H04B7/0874 , H04L1/0036 , H04L1/0625 , H04L1/0631
摘要： A method is presented for processing signals of a multiple-input, multiple-output communications system in the RF domain. The system includes multiple transmit antennas and multiple receive antennas connected by a wireless channel. A matrix M is generated based on long-term characteristics of the wireless channel. The matrix M is multiplied times input RF signals to obtain output RF signals. The matrix can be generated in a transmitter, a receiver, or both.
摘要翻译：提出了一种用于处理RF域中的多输入多输出通信系统的信号的方法。该系统包括通过无线信道连接的多个发射天线和多个接收天线。基于无线信道的长期特性生成矩阵M. 矩阵M乘以输入RF信号，以获得输出RF信号。矩阵可以在发射机，接收机或两者中生成。

10. 发明授权

US07280942B2 Method for representing a combination of signals with a distribution of a single lognormal random variable 有权
公开(公告)号：US07280942B2
公开(公告)日：2007-10-09
申请号：US11203440
申请日：2005-08-15
申请人： Neelesh B. Mehta , Andreas F. Molisch , Jingxian Wu , Jinyun Zhang
发明人： Neelesh B. Mehta , Andreas F. Molisch , Jingxian Wu , Jinyun Zhang
IPC分类号： G06F15/00
CPC分类号： H04B17/23
摘要： A method analyzes a set of signal acquired from a physical system. A set of parameters characterizing the set of signals is measured. The parameters can include the mean and the variance of the power of the signal, and a Rician factor. A first point and a second point of a moment generating function for a combination of the set of signals are evaluated according to the set of parameters to obtain a first sample and a second sample, respectively. First and second equations are defined. The equations respectively have an approximation of a moment generation function of a lognormal random variable representing the combination of the set of signals, at the first point and the second point, on the left side, and the first and second sample on the right side. The two equations are solved to obtain a mean and a variance of the lognormal random variable representing a distribution of the combination of the set of the signals.

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