公开(公告)号：US07620096B2

公开(公告)日：2009-11-17

申请号：US11036891

申请日：2005-01-14

申请人： Yeheskel Bar-Ness ,  Mizhou Tan

发明人： Yeheskel Bar-Ness ,  Mizhou Tan

IPC分类号： H04B1/713

CPC分类号： H04L5/026 ,  H04B1/7105 ,  H04B1/71072 ,  H04W52/20

摘要： For a given decision order, MMSE successive interference cancellation (MMSE-SIC) can simultaneously maximize SIRs of all users. To further increase its efficiency, a power control (PC) algorithm, under equal BER criterion, is disclosed for uplink MC-CDMA. In frequency-selective Rayleigh fading channels, the MMSE-SIC integrated with the equal BER PC suppresses multiple access interference (MAI) effectively, resulting in a performance very close to the single user bound (SUB).

摘要翻译： 对于给定的决策顺序，MMSE连续干扰消除（MMSE-SIC）可以同时最大化所有用户的SIR。 为了进一步提高其效率，公布了用于上行链路MC-CDMA的相等BER标准下的功率控制（PC）算法。 在频率选择性瑞利衰落信道中，与等BER PC集成的MMSE-SIC有效地抑制了多址接入干扰（MAI），导致与单用户绑定（SUB）的性能非常接近。

公开(公告)号：US20060104373A1

公开(公告)日：2006-05-18

申请号：US10989895

申请日：2004-11-16

申请人： Yeheskel Bar-Ness ,  Mizhou Tan

发明人： Yeheskel Bar-Ness ,  Mizhou Tan

IPC分类号： H04K1/10

CPC分类号： H04L27/2617 ,  H04K1/00 ,  H04L27/2621

摘要： A signal scrambling method based on combined symbol rotation and inversion (CSRI) for the peak-to-average power ratio (PAPR) reduction of OFDM signals. By dividing OFDM sequences into subblocks and performing symbol rotation and inversion in each subblock, high degrees of freedom are available to offset the possibility of encounting poor sequences with large PAPR. In order to reduce the complexity of this scheme, two suboptimal CSRI schemes are disclosed, one based on a successive approach combined with symbol grouping, and the other based on a random approach combined with threshold control.

摘要翻译： 基于组合符号旋转和反演（CSRI）的信号加扰方法，用于OFDM信号的峰均功率比（PAPR）降低。 通过将OFDM序列划分为子块并在每个子块中执行符号旋转和反转，可以获得高自由度来抵消具有较大PAPR的差序列的可能性。 为了降低该方案的复杂性，公开了两种次优的CSRI方案，一种是基于与符号分组相结合的连续方法，另一种基于与阈值控制相结合的随机方法。

公开(公告)号：US20050265291A1

公开(公告)日：2005-12-01

申请号：US11036891

申请日：2005-01-14

申请人： Yeheskel Bar-Ness ,  Mizhou Tan

发明人： Yeheskel Bar-Ness ,  Mizhou Tan

IPC分类号： H04B1/707 ,  H04B7/005 ,  H04B7/216 ,  H04L5/02

CPC分类号： H04L5/026 ,  H04B1/7105 ,  H04B1/71072 ,  H04W52/20

摘要： For a given decision order, MMSE successive interference cancellation (MMSE-SIC) can simultaneously maximize SIRs of all users. To further increase its efficiency, a power control (PC) algorithm, under equal BER criterion, is disclosed for uplink MC-CDMA. In frequency-selective Rayleigh fading channels, the MMSE-SIC integrated with the equal BER PC suppresses multiple access interference (MAI) effectively, resulting in a performance very close to the single user bound (SUB).

摘要翻译： 对于给定的决策顺序，MMSE连续干扰消除（MMSE-SIC）可以同时最大化所有用户的SIR。 为了进一步提高其效率，公布了用于上行链路MC-CDMA的相等BER标准下的功率控制（PC）算法。 在频率选择性瑞利衰落信道中，与等BER PC集成的MMSE-SIC有效地抑制了多址接入干扰（MAI），导致与单用户绑定（SUB）的性能非常接近。

公开(公告)号：US07376202B2

公开(公告)日：2008-05-20

申请号：US10989895

申请日：2004-11-16

申请人： Yeheskel Bar-Ness ,  Mizhou Tan

发明人： Yeheskel Bar-Ness ,  Mizhou Tan

IPC分类号： H04K1/02

CPC分类号： H04L27/2617 ,  H04K1/00 ,  H04L27/2621

摘要： A signal scrambling method based on combined symbol rotation and inversion (CSRI) for the peak-to-average power ratio (PAPR) reduction of OFDM signals. By dividing OFDM sequences into subblocks and performing symbol rotation and inversion in each subblock, high degrees of freedom are available to offset the possibility of encounting poor sequences with large PAPR. In order to reduce the complexity of this scheme, two suboptimal CSRI schemes are disclosed, one based on a successive approach combined with symbol grouping, and the other based on a random approach combined with threshold control.

摘要翻译： 基于组合符号旋转和反演（CSRI）的信号加扰方法，用于OFDM信号的峰均功率比（PAPR）降低。 通过将OFDM序列划分为子块并在每个子块中执行符号旋转和反转，可以获得高自由度来抵消具有较大PAPR的差序列的可能性。 为了降低该方案的复杂性，公开了两种次优的CSRI方案，一种是基于与符号分组相结合的连续方法，另一种基于与阈值控制相结合的随机方法。

公开(公告)号：US07339884B2

公开(公告)日：2008-03-04

申请号：US11013934

申请日：2004-12-16

申请人： Yeheskel Bar-Ness ,  Mizhou Tan ,  Zoran Latinovic

发明人： Yeheskel Bar-Ness ,  Mizhou Tan ,  Zoran Latinovic

IPC分类号： H04J11/00

CPC分类号： H04L25/03866 ,  H04L1/0625 ,  H04L27/2614 ,  H04L27/3411

摘要： A signal scrambling method is provided for peak-to-average power ratio (PAPR) reduction of STBC MIMO-OFDM signals in a MIMO-OFDM system having Y transmit antenna. In general terms the OFDM sequence of symbols in said signal for each transmit antenna is divided into M sub-blocks of equal size and subclockwise rotation and inversions are performed across all transmit antennas to generate [2Y]M permuted sequence sets from the original OFDM sequence. Based on a predetermined criteria, there is then selected from the resulting sets of OFDM sequences the one with the best PAPR properties for transmission. The predetermined criteria preferably comprises identifying maximums for all [2Y]M sequence sets, by calculating the largest PAPR value of Y sequences in each set and selecting a set with the minimum maximum for transmission.

摘要翻译： 提供信号加扰方法，用于具有Y发送天线的MIMO-OFDM系统中的STBC MIMO-OFDM信号的峰均功率比（PAPR）降低。 一般来说，用于每个发射天线的所述信号中的符号的OFDM序列被划分为相同大小的M个子块和亚时基旋转，并且在所有发射天线之间执行反转以产生[2Y] 来自原始OFDM序列的序列集。 基于预定标准，从所得到的OFDM序列组中选择具有最佳PAPR属性的传输序列。 预定标准优选地包括通过计算每组中的Y序列的最大PAPR值并选择具有最小传输最小值的集合来识别所有[2Y]个超级序列集的最大值。

公开(公告)号：US20060120268A1

公开(公告)日：2006-06-08

申请号：US11013934

申请日：2004-12-16

申请人： Yeheskel Bar-Ness ,  Mizhou Tan ,  Zoran Latinovic

发明人： Yeheskel Bar-Ness ,  Mizhou Tan ,  Zoran Latinovic

IPC分类号： H04J11/00

CPC分类号： H04L25/03866 ,  H04L1/0625 ,  H04L27/2614 ,  H04L27/3411

摘要： A signal scrambling method is provided for peak-to-average power ratio (PAPR) reduction of STBC MIMO-OFDM signals in a MIMO-OFDM system having Y transmit antenna. In general terms the OFDM sequence of symbols in said signal for each transmit antenna is divided into M sub-blocks of equal size and subclockwise rotation and inversions are performed across all transmit antennas to generate [2Y]M permuted sequence sets from the original OFDM sequence. Based on a predetermined criteria, there is then selected from the resulting sets of OFDM sequences the one with the best PAPR properties for transmission. The predetermined criteria preferably comprises identifying maximums for all [2Y]M sequence sets, by calculating the largest PAPR value of Y sequences in each set and selecting a set with the minimum maximum for transmission.

摘要翻译： 提供信号加扰方法，用于具有Y发送天线的MIMO-OFDM系统中的STBC MIMO-OFDM信号的峰均功率比（PAPR）降低。 一般来说，用于每个发射天线的所述信号中的符号的OFDM序列被划分为相同大小的M个子块和亚时基旋转，并且在所有发射天线之间执行反转以产生[2Y] 来自原始OFDM序列的序列集。 基于预定标准，从所得到的OFDM序列组中选择具有最佳PAPR属性的传输序列。 预定标准优选地包括通过计算每组中的Y序列的最大PAPR值并选择具有最小传输最小值的集合来识别所有[2Y]个超级序列集的最大值。

公开(公告)号：US08195089B2

公开(公告)日：2012-06-05

申请号：US12008196

申请日：2008-01-09

申请人： Dong-Ho Kim ,  Myeon-Kyun Cho ,  Yung-Soo Kim ,  Yeheskel Bar-Ness ,  Osvaldo Simeone ,  Nicola Varanese

发明人： Dong-Ho Kim ,  Myeon-Kyun Cho ,  Yung-Soo Kim ,  Yeheskel Bar-Ness ,  Osvaldo Simeone ,  Nicola Varanese

IPC分类号： H04B7/15

CPC分类号： H04W52/46 ,  H04B7/026 ,  H04B7/0626 ,  H04W52/241

摘要： An apparatus and method for cooperative transmission in a multi-antenna relay wireless communication system are provided. A receiving end includes an estimator, a reader, a feedback unit and a detector. According to the present invention, the receiving end receives the signal from both the transmitting end and the relay station. Therefore, a reception gain is obtained and a high throughput can be ensured.

摘要翻译： 提供了一种用于多天线中继无线通信系统中的协作传输的装置和方法。 接收端包括估计器，读取器，反馈单元和检测器。 根据本发明，接收端从发送端和中继站接收信号。 因此，获得接收增益，并且可以确保高吞吐量。

公开(公告)号：US08155229B2

公开(公告)日：2012-04-10

申请号：US11603859

申请日：2006-11-22

申请人： Ye-Hoon Lee ,  Dong-Ho Kim ,  Yeheskel Bar-Ness ,  Jordi Diaz

发明人： Ye-Hoon Lee ,  Dong-Ho Kim ,  Yeheskel Bar-Ness ,  Jordi Diaz

IPC分类号： H04B7/02

CPC分类号： H04L1/0618 ,  H04L27/2626

摘要： An apparatus is provided for transmitting a signal in a communication system. Upon receipt of an information vector, the apparatus includes converting the information vector into a plurality of sub-information vectors; performing coding and modulation on each of the sub-information vectors according to a corresponding mode thereby generating a modulation symbol; interleaving the modulation symbol generated for each of the sub-information vectors; allocating power to the interleaved modulation symbol for each individual mode; and beamforming the modulation symbols power-allocated for each individual mode, and transmitting the beamforming symbols.

摘要翻译： 提供一种用于在通信系统中发送信号的装置。 在接收到信息向量时，该装置包括将信息向量转换成多个子信息向量; 根据对应模式对每个子信息向量执行编码和调制，从而生成调制符号; 交织对每个子信息向量生成的调制符号; 为每个单独模式分配交织调制符号的功率; 以及波束成形为每个单独模式功率分配的调制符号，以及发送波束形成符号。

公开(公告)号：US08144723B2

公开(公告)日：2012-03-27

申请号：US12001480

申请日：2007-12-11

申请人： Yeheskel Bar-Ness ,  Osvaldo Simeone

发明人： Yeheskel Bar-Ness ,  Osvaldo Simeone

IPC分类号： H04L12/413

CPC分类号： H04W88/04 ,  H04L47/10 ,  H04W24/00

摘要： In one embodiment, a cognitive radio system includes a first transmitter in communication with a first receiver via a wireless channel. The first transmitter receives a plurality of first packets, and transmits the first packets to the first receiver via the channel. A second transmitter in communication with a second receiver and the first receiver via the channel receives a plurality of second packets, receives the plurality of first packets from the first transmitter, and transmits the second packets to the second receiver via the channel. The second transmitter is configured to detect an idle state of the channel. Upon detecting the idle state of the channel, the second transmitter is configured selectively to transmit at least one of the second packets to the second receiver or to relay at least one of the first packets to the first receiver.

摘要翻译： 在一个实施例中，认知无线电系统包括经由无线信道与第一接收机通信的第一发射机。 第一发射机接收多个第一分组，并且经由信道将第一分组发送到第一接收机。 经由信道与第二接收机和第一接收机通信的第二发射机接收多个第二分组，从第一发射机接收多个第一分组，并经由信道将第二分组发送到第二接收机。 第二发射机被配置为检测信道的空闲状态。 在检测到信道的空闲状态时，第二发射机被选择性地配置为将第二分组中的至少一个发送到第二接收机，或者将第一分组中的至少一个中继到第一接收机。

公开(公告)号：US07408975B2

公开(公告)日：2008-08-05

申请号：US11076751

申请日：2005-03-10

申请人： Yeheskel Bar-Ness ,  Ye Hoon Lee

发明人： Yeheskel Bar-Ness ,  Ye Hoon Lee

IPC分类号： H04B1/00

CPC分类号： H04B1/71072 ,  H04B2201/70706 ,  H04W52/16 ,  H04W52/248

摘要： Transmit power adaptation for DS/CDMA systems is disclosed for a CDMA system that utilizes a successive interference cancellation receiver on fading channels. The transmission power is adapted in response to channel variations to achieve an arbitrary power profile for received signal powers at the system base station. That is, the received signal powers are distributed with some factor xi's given as: SRi=SR(1)xi, (i=2, 3, . . . , K and x1=1) where K is the number of users and SR(i) is the received signal power of the user having the ith strength, and wherein user strengths are ranked in the order of estimated channel gains. The factor xi gives a measure of the disparity between the received power levels. The channel is estimated at both the transmitter and receiver. In one embodiment, the factors, xi, for distributing the signal powers are selected such that the average BER for each user is minimized. In another embodiment, the factors, xi, for distributing the signal powers are selected such that, after successive interference cancellation, an instantaneous BER for all users is equal.

摘要翻译： 对于在衰落信道上利用连续干扰消除接收机的CDMA系统，公开了用于DS / CDMA系统的发射功率适配。 传输功率是响应于信道变化而适应的，以实现系统基站处的接收信号功率的任意功率分布。 也就是说，接收的信号功率以给定的一些因子x分配：<？in-line-formula description =“In-line Formulas”end =“lead”？> S < （1）其中（i = 2，...，n） 3，...，K和x 1 = 1）<？in-line-formula description =“In-line Formulas”end =“tail”？>其中K是用户数， （i）是具有第i个强度的用户的接收信号功率，并且其中用户强度按照 估计渠道收益。 因子x i i给出了接收功率电平之间的差异的度量。 在发射机和接收机两者估计信道。 在一个实施例中，选择用于分配信号功率的因子，使得每个用户的平均BER被最小化。 在另一个实施例中，选择用于分配信号功率的因子，使得在连续干扰消除之后，所有用户的瞬时BER相等。