公开(公告)号：US20080244350A1

公开(公告)日：2008-10-02

申请号：US12053201

申请日：2008-03-21

申请人： Elisabeth de Carvalho ,  Petar Popovski ,  Jieping Hu ,  David Mazzarese ,  Hak-Ju Lee ,  Young-Kwon Cho

发明人： Elisabeth de Carvalho ,  Petar Popovski ,  Jieping Hu ,  David Mazzarese ,  Hak-Ju Lee ,  Young-Kwon Cho

IPC分类号： H04L1/08 ,  G06F11/14

CPC分类号： H04L1/1812 ,  H04B7/061 ,  H04B7/0697 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0021 ,  H04L1/0026 ,  H04L1/06 ,  H04L1/1854 ,  H04L1/189

摘要： A method for an Automatic Repeat reQuest (ARQ) at a receiver in a Multiple Input Multiple Output (MIMO) system wherein when a received packet is erroneous and the erroneous packet is received from the weakest antenna in a Space Multiplexing (SM) mode, a first smallest number of retransmissions is computed to acquire a Signal to Noise Ratio (SNR) within or above an Adaptive Modulation and Coding (AMC) level. When the first number of the retransmissions is greater than a threshold, the sender is requested to retransmit the packets from the strongest antenna in the SM mode and when the first number of the retransmissions is smaller than the threshold, the sender is requested to retransmit the packets from the weakest antenna in the SM mode.

摘要翻译： 一种在多输入多输出（MIMO）系统中的接收机处的自动重复请求（ARQ）的方法，其中当接收到的分组是错误的并且在空间复用（SM））模式中从最弱的天线接收到错误分组时， 计算第一最小数量的重传以在自适应调制和编码（AMC）级别内或之上获取信噪比（SNR）。 当第一个重传次数大于阈值时，要求发送方以SM模式重传最强天线的分组，当第一个重传次数小于该阈值时，请求发送方重发 SM模式下最弱天线的数据包。

公开(公告)号：US20070135059A1

公开(公告)日：2007-06-14

申请号：US11638074

申请日：2006-12-13

申请人： Hiroyuki Yomo ,  Elisabeth De Carvalho ,  Petar Popovski ,  Jae-Hyuk Jang ,  Eun-Taek Lim ,  Young-Kwon Cho ,  Dong-Seek Park

发明人： Hiroyuki Yomo ,  Elisabeth De Carvalho ,  Petar Popovski ,  Jae-Hyuk Jang ,  Eun-Taek Lim ,  Young-Kwon Cho ,  Dong-Seek Park

IPC分类号： H04B7/00

CPC分类号： H04W52/325 ,  H04L5/0032 ,  H04L5/0048 ,  H04L5/0057 ,  H04L25/0224 ,  H04W52/245 ,  H04W52/46

摘要： An apparatus and a method for estimating the channel state of each link in a wireless relay network having fixed RSs are provided. A source estimates a channel of a source-RS link and a channel of a source-destination link using pilot signals received from an Relay Station (RS) and a destination and the source monitors reception of a pilot signal including channel state information of an RS-destination link from the RS. Upon receipt of the pilot signal, the source estimates a channel of the RS-destination link using the pilot signal and the channel state information of the RS-destination link.

摘要翻译： 提供了一种用于估计具有固定RS的无线中继网络中的每个链路的信道状态的装置和方法。 源使用从中继站（RS）和目的地接收的导频信号来估计源-RS链路的信道和源 - 目的地链路的信道，并且源监视包括RS的信道状态信息的导频信号的接收 来自RS的目录链接。 在接收到导频信号时，源使用导频信号和RS目的地链路的信道状态信息来估计RS目的地链路的信道。

公开(公告)号：US20080227388A1

公开(公告)日：2008-09-18

申请号：US12049577

申请日：2008-03-17

申请人： Petar Popovski ,  Elisabeth de Carvalho ,  Kathiravetpillai Sivanesan ,  Eun-Taek Lim ,  Ho-Kyu Choi ,  Young-Kwon Cho

发明人： Petar Popovski ,  Elisabeth de Carvalho ,  Kathiravetpillai Sivanesan ,  Eun-Taek Lim ,  Ho-Kyu Choi ,  Young-Kwon Cho

IPC分类号： H04B7/14

CPC分类号： H04B7/2603 ,  H04W72/12 ,  H04W88/04 ,  H04W88/08

摘要： A method and apparatus for joint unicast using multi-user superposition coding in a wireless relay system are provided. A BS superposition-encodes first and second data messages directed to first and second MSs, respectively, scheduled at a current scheduling instant. The first and second data messages carry first and second information bit streams for the first and second MSs, respectively. The first MS has a relatively good direct link to the BS, and the second MS has a relatively bad direct link to the BS. The superposition-coded data is transmitted to the first MS and an RS connected between the BS and the first and second MSs. The RS receives the superposition-coded data from the BS, extracts the second information bit stream by decoding the superposition-coded data, and transmits a third data message carrying the second information bit stream to the first and second MSs.

摘要翻译： 提供了一种在无线中继系统中使用多用户叠加编码的联合单播的方法和装置。 BS在当前调度时刻分别对分别指向第一和第二MS的第一和第二数据消息进行叠加编码。 第一和第二数据消息分别携带第一和第二MS的第一和第二信息比特流。 第一MS具有与BS相对较好的直接链路，第二MS具有与BS相对较差的直接链路。 叠加编码数据被发送到第一MS和连接在BS与第一和第二MS之间的RS。 RS从BS接收叠加编码数据，通过解码叠加编码数据提取第二信息比特流，并将携带第二信息比特流的第三数据消息发送给第一和第二MS。

公开(公告)号：US07920825B2

公开(公告)日：2011-04-05

申请号：US12049577

申请日：2008-03-17

申请人： Petar Popovski ,  Elisabeth de Carvalho ,  Kathiravetpillai Sivanesan ,  Eun-Taek Lim ,  Ho-Kyu Choi ,  Young-Kwon Cho

发明人： Petar Popovski ,  Elisabeth de Carvalho ,  Kathiravetpillai Sivanesan ,  Eun-Taek Lim ,  Ho-Kyu Choi ,  Young-Kwon Cho

IPC分类号： H04B7/15

CPC分类号： H04B7/2603 ,  H04W72/12 ,  H04W88/04 ,  H04W88/08

摘要： A method and apparatus for joint unicast using multi-user superposition coding in a wireless relay system are provided. A BS superposition-encodes first and second data messages directed to first and second MSs, respectively, scheduled at a current scheduling instant. The first and second data messages carry first and second information bit streams for the first and second MSs, respectively. The first MS has a relatively good direct link to the BS, and the second MS has a relatively bad direct link to the BS. The superposition-coded data is transmitted to the first MS and an RS connected between the BS and the first and second MSs. The RS receives the superposition-coded data from the BS, extracts the second information bit stream by decoding the superposition-coded data, and transmits a third data message carrying the second information bit stream to the first and second MSs.

摘要翻译： 提供了一种在无线中继系统中使用多用户叠加编码的联合单播的方法和装置。 BS在当前调度时刻分别对分别指向第一和第二MS的第一和第二数据消息进行叠加编码。 第一和第二数据消息分别携带第一和第二MS的第一和第二信息比特流。 第一MS具有与BS相对较好的直接链路，第二MS具有与BS相对较差的直接链路。 叠加编码数据被发送到第一MS和连接在BS与第一和第二MS之间的RS。 RS从BS接收叠加编码数据，通过解码叠加编码数据提取第二信息比特流，并将携带第二信息比特流的第三数据消息发送到第一和第二MS。

公开(公告)号：US20080234003A1

公开(公告)日：2008-09-25

申请号：US12053042

申请日：2008-03-21

申请人： Elisabeth de Carvalho ,  Hiroyuki Yomo ,  Kathiravetpillai Sivanesan ,  Eun-Taek Lim ,  David Mazzarese ,  Young-Kwon Cho

发明人： Elisabeth de Carvalho ,  Hiroyuki Yomo ,  Kathiravetpillai Sivanesan ,  Eun-Taek Lim ,  David Mazzarese ,  Young-Kwon Cho

IPC分类号： H04M1/00

CPC分类号： H04W72/085

摘要： An apparatus and method for detecting a signal in a broadband wireless communication system are provided. In a Base Station, an offset estimator estimates frequency offsets of a signal received from each of a plurality of Mobile Stations (MSs), a channel estimator estimates a channel matrix having channel coefficients of subcarriers as elements, for each MS, a modeler models the received signals using the frequency offsets of the MSs and the channel matrices of the MSs, and a detector detects signals transmitted from the MSs using the modeled received signals.

摘要翻译： 提供了一种用于在宽带无线通信系统中检测信号的装置和方法。 在基站中，偏移估计器估计从多个移动站（MS）中的每一个接收的信号的频率偏移，信道估计器针对每个MS估计具有子载波的信道系数的信道矩阵作为元素，建模者对 使用MS的频率偏移和MS的信道矩阵的接收信号，并且检测器使用建模的接收信号来检测从MS发送的信号。

公开(公告)号：US20080232343A1

公开(公告)日：2008-09-25

申请号：US11787410

申请日：2007-04-16

申请人： Huan Cong Nguyen ,  Elisabeth De Carvalho ,  Jin-Kyu Koo ,  Su-Ryong Jeong ,  Young-Kwon Cho ,  Jae-Weon Cho ,  Dong-Seek Park ,  Ho-Kyu Choi

发明人： Huan Cong Nguyen ,  Elisabeth De Carvalho ,  Jin-Kyu Koo ,  Su-Ryong Jeong ,  Young-Kwon Cho ,  Jae-Weon Cho ,  Dong-Seek Park ,  Ho-Kyu Choi

IPC分类号： H04B7/212 ,  H04L27/06

CPC分类号： H04L27/2657 ,  H04L27/2655 ,  H04L27/2675

摘要： Provided is an apparatus and method for estimating an uplink frequency offset in a wireless communication system. In a receiving apparatus of a wireless communication system using a random access channel composed of two equivalent sequences, the apparatus includes a channel receiver which extracts samples corresponding to the two sequences from an input random access channel signal; a correlator which computes first and second correlation values by correlating preceding and trailing samples among the samples output from the channel receiver with a predetermined sequence; and a frequency offset estimator which estimates a frequency offset by using a ratio of the second correlation value to the first correlation value output from the correlator.

摘要翻译： 提供了一种用于估计无线通信系统中的上行链路频率偏移的装置和方法。 在使用由两个等效序列组成的随机接入信道的无线通信系统的接收装置中，该装置包括：信道接收机，从输入的随机接入信道信号中提取与两个序列对应的样本; 相关器，其通过使从信道接收机输出的样本中的前和后样本与预定序列相关来计算第一和第二相关值; 以及频率偏移估计器，其通过使用从相关器输出的第二相关值与第一相关值的比值来估计频率偏移。

公开(公告)号：US20080212515A1

公开(公告)日：2008-09-04

申请号：US12041213

申请日：2008-03-03

申请人： Hiroyuki Yomo ,  Elisabeth de Carvalho ,  Sivanesan ,  Eun-Taek Lim ,  Young-Kwon Cho

发明人： Hiroyuki Yomo ,  Elisabeth de Carvalho ,  Sivanesan ,  Eun-Taek Lim ,  Young-Kwon Cho

IPC分类号： H04B7/14

CPC分类号： H04B7/2606

摘要： A system and method for transmitting and receiving a signal in a communication system using a relay scheme. A base station receives a first signal in a first time interval from a first mobile station which is at least one mobile station located in a third region which is a region where a first region which is a region of the base station itself overlaps with a second region which is a region of a relay station. The relay station receives a second signal in the first time interval from a second mobile station which is at least one mobile station located in a fourth region which is a region not overlapping with the first region in the second region, and receives the first signal from the first mobile station. The relay station transmits a third signal including the first signal and the second signal to the base station in a second time interval. The base station receives the third signal in the second time interval, and cancels the first signal from the third signal to detect the second signal.

摘要翻译： 一种用于在使用中继方案的通信系统中发送和接收信号的系统和方法。 基站从第一移动台接收第一信号，第一移动台是位于第三区域中的至少一个移动站，第三区域是基站本身的区域的第一区域与第二区域重叠的区域 区域，其是中继站的区域。 中继站在第一时间间隔从第二移动台接收第二信号，该第二移动台是位于与第二区域中不与第一区域重叠的区域的第四区域中的至少一个移动站，并且从第二移动站接收第一信号 第一个移动台。 中继站在第二时间间隔中向基站发送包括第一信号和第二信号的第三信号。 基站在第二时间间隔接收第三信号，并且从第三信号中取消第一信号以检测第二信号。

公开(公告)号：US08068456B2

公开(公告)日：2011-11-29

申请号：US12041213

申请日：2008-03-03

申请人： Hiroyuki Yomo ,  Elisabeth de Carvalho ,  Kathiravetpillai Sivanesan ,  Eun-Taek Lim ,  Young-Kwon Cho

发明人： Hiroyuki Yomo ,  Elisabeth de Carvalho ,  Kathiravetpillai Sivanesan ,  Eun-Taek Lim ,  Young-Kwon Cho

IPC分类号： H04W4/00 ,  H04J3/16 ,  H04J3/22

CPC分类号： H04B7/2606

摘要： A system and method for transmitting and receiving a signal in a communication system using a relay scheme. A base station receives a first signal in a first time interval from a first mobile station which is at least one mobile station located in a third region which is a region where a first region which is a region of the base station itself overlaps with a second region which is a region of a relay station. The relay station receives a second signal in the first time interval from a second mobile station which is at least one mobile station located in a fourth region which is a region not overlapping with the first region in the second region, and receives the first signal from the first mobile station. The relay station transmits a third signal including the first signal and the second signal to the base station in a second time interval. The base station receives the third signal in the second time interval, and cancels the first signal from the third signal to detect the second signal.

摘要翻译： 一种用于在使用中继方案的通信系统中发送和接收信号的系统和方法。 基站从第一移动台接收第一信号，第一移动台是位于第三区域中的至少一个移动站，第三区域是基站本身的区域的第一区域与第二区域重叠的区域 区域，其是中继站的区域。 中继站在第一时间间隔从第二移动台接收第二信号，该第二移动台是位于与第二区域中不与第一区域重叠的区域的第四区域中的至少一个移动站，并且从第二移动站接收第一信号 第一个移动台。 中继站在第二时间间隔中向基站发送包括第一信号和第二信号的第三信号。 基站在第二时间间隔接收第三信号，并且从第三信号中取消第一信号以检测第二信号。

公开(公告)号：US07949034B2

公开(公告)日：2011-05-24

申请号：US11787410

申请日：2007-04-16

申请人： Huan Cong Nguyen ,  Elisabeth De Carvalho ,  Jin-Kyu Koo ,  Su-Ryong Jeong ,  Young-Kwon Cho ,  Jae-Weon Cho ,  Dong-Seek Park ,  Ho-Kyu Choi

发明人： Huan Cong Nguyen ,  Elisabeth De Carvalho ,  Jin-Kyu Koo ,  Su-Ryong Jeong ,  Young-Kwon Cho ,  Jae-Weon Cho ,  Dong-Seek Park ,  Ho-Kyu Choi

IPC分类号： H04B1/69

CPC分类号： H04L27/2657 ,  H04L27/2655 ,  H04L27/2675

摘要： Provided is an apparatus and method for estimating an uplink frequency offset in a wireless communication system. In a receiving apparatus of a wireless communication system using a random access channel composed of two equivalent sequences, the apparatus includes a channel receiver which extracts samples corresponding to the two sequences from an input random access channel signal; a correlator which computes first and second correlation values by correlating preceding and trailing samples among the samples output from the channel receiver with a predetermined sequence; and a frequency offset estimator which estimates a frequency offset by using a ratio of the second correlation value to the first correlation value output from the correlator.

摘要翻译： 提供了一种用于估计无线通信系统中的上行链路频率偏移的装置和方法。 在使用由两个等效序列组成的随机接入信道的无线通信系统的接收装置中，该装置包括：信道接收机，从输入的随机接入信道信号中提取与两个序列对应的样本; 相关器，其通过使从信道接收机输出的样本中的前和后样本与预定序列相关来计算第一和第二相关值; 以及频率偏移估计器，其通过使用从相关器输出的第二相关值与第一相关值的比值来估计频率偏移。

公开(公告)号：US07924748B2

公开(公告)日：2011-04-12

申请号：US11649184

申请日：2007-01-03

申请人： Hiroyuki Yomo ,  Ragnar Viôir Reynisson ,  Petar Popovski ,  Elisabeth De Carbalho ,  Jung-Soo Woo ,  Deok-Ki Kim ,  Ho-Kyu Choi ,  Young-Kwon Cho ,  Dong-Seek Park

发明人： Hiroyuki Yomo ,  Ragnar Viôir Reynisson ,  Petar Popovski ,  Elisabeth De Carbalho ,  Jung-Soo Woo ,  Deok-Ki Kim ,  Ho-Kyu Choi ,  Young-Kwon Cho ,  Dong-Seek Park

IPC分类号： H04L5/14

CPC分类号： H04W52/24 ,  H04B17/24 ,  H04W52/241 ,  H04W52/245 ,  H04W52/247

摘要： A method is provided for controlling power in a communication system. The power control method includes allocating a first data transmission region and a second data transmission region corresponding to a first communication scheme and second communication scheme; providing a communication service to a receiver through the first data transmission region, and receiving power control information from the receiver through the second data transmission region while providing the communication service; and adjusting a level of transmission power used for providing the communication service according to the received power control information, and providing the communication service to the receiver using the adjusted transmission power.

摘要翻译： 提供了一种用于控制通信系统中的功率的方法。 功率控制方法包括分配对应于第一通信方案和第二通信方案的第一数据传输区域和第二数据传输区域; 通过第一数据传输区域向接收机提供通信服务，并且在提供通信服务的同时通过第二数据传输区域从接收机接收功率控制信息; 以及根据接收到的功率控制信息来调整用于提供通信业务的发送功率的水平，以及使用所调整的发送功率向接收机提供通信业务。