公开(公告)号：US06304581B1

公开(公告)日：2001-10-16

申请号：US09503021

申请日：2000-02-14

申请人： Jiangnan Chen ,  Louay Jalloul

发明人： Jiangnan Chen ,  Louay Jalloul

IPC分类号： H04J1300

CPC分类号： H04L1/0059 ,  H04L1/0071 ,  H04L5/0021 ,  H04L5/0044 ,  H04L5/0083

摘要： A communication system provides a method and apparatus for interleaving data symbols of a block of data symbols (301) having data symbols from B(1) to B(n). The method and the accompanying apparatus include dividing block of data symbols (301) into a plurality of groups of data symbols (303 and 304). Each of the plurality of groups of data symbols (303, 304) includes data symbols equal in number to a fraction of data symbols B(1) through B(n), such as ½ and ⅓, such that the total number of data symbols in plurality of groups of data symbols (303, 304) substantially equals “n” data symbols. An interleaved block of data symbols (106) is formed by an alternating selection of data symbols from plurality groups of data symbols (303, 304). The alternating selection from each of plurality of groups of data symbols (303, 304) is according to either a forward addressing or a backward addressing mapping. A plurality of coded data symbols in a block of coded data symbols (104) is received for interleaving according to a single bit reversal interleaving function to form block of data symbols (301).

摘要翻译： 通信系统提供了一种用于交织具有从B（1）到B（n）的数据符号的数据符号块（301）的数据符号的方法和装置。 该方法和伴随装置包括将数据符号（301）的块划分成多组数据符号（303和304）。 多组数据符号（303,304）中的每一个包括数量相等于数据符号B（1）至B（n）的一部分的数据符号，例如1/2和1/3，使得数据符号的总数 在多组数据符号（303,304）中基本上等于“n”个数据符号。 数据符号（106）的交织块通过来自多组数据符号（303,304）的数据符号的交替选择形成。 来自多个数据符号组（303,304）中的每一组的交替选择根据前向寻址或后向寻址映射。 接收编码数据符号块（104）中的多个编码数据符号，以便根据单个位反转交织功能进行交织以形成数据符号块（301）。

公开(公告)号：US06256338B1

公开(公告)日：2001-07-03

申请号：US09201185

申请日：1998-11-30

申请人： Louay Jalloul ,  Nabil Yousef

发明人： Louay Jalloul ,  Nabil Yousef

IPC分类号： H04L2730

CPC分类号： H04B1/7113 ,  H04B1/7117 ,  H04B7/005 ,  H04B17/364 ,  H04B17/391

摘要： A method for determining a fading correction factor to be used for correcting a sample of a power delay profile of a received signal in a communication system, the fading correction factor associated with a fading channel characteristic through which the received signal propagates, includes estimating a number (N) of complex samples, obtaining fading channel autocorrelation sequence (R(n)) of the fading channel for a plurality (n) of complex samples, the number of the plurality (n) of complex samples corresponding to the number (N) of complex samples, and computing the fading correction factor based on the number (N) of complex samples, autocorrelation sequence (R(n)), and the number of the plurality (n) of complex samples.

摘要翻译： 一种用于确定用于校正通信系统中的接收信号的功率延迟分布的采样的衰落校正因子的方法，与接收信号传播的衰落信道特性相关联的衰落校正因子包括估计数 （N）的复数样本，获得多个（n）个复数样本的衰落信道的衰落信道自相关序列（R（n）），对应于数目（N）的多个（n）个复数样本的数量， 并且基于复数样本的数量（N），自相关序列（R（n））和多个（n）个复杂样本的数量来计算衰落校正因子。

公开(公告)号：US5946346A

公开(公告)日：1999-08-31

申请号：US946210

申请日：1997-10-07

申请人： Mansoor Ahmed ,  Louay Jalloul ,  Kamyar Rohani

发明人： Mansoor Ahmed ,  Louay Jalloul ,  Kamyar Rohani

IPC分类号： H04L27/00 ,  H04B7/005 ,  H04B7/06 ,  H04B7/08 ,  H04B7/26 ,  H04L1/00 ,  H04L1/20 ,  H04B1/38

CPC分类号： H04W52/12 ,  H04B7/0814 ,  H04L1/20 ,  H04B7/0615 ,  H04W52/20 ,  H04W52/24 ,  Y02B60/50

摘要： In a wireless communication system using a power control command to control power of a transmitted traffic channel (58), a signal from a transmitter (64) is received (104) via a channel. A channel quality is measured (70, 108) using the signal from the transmitter. In response to the measured channel quality (70) exceeding (80, 110) a channel quality threshold (82), a decrease traffic channel power command is sent (112) to the transmitter, and a channel quality threshold is increased (114). In response to the channel quality threshold (82) exceeding (80, 110) the measured channel quality (70), an increase traffic channel power command is sent (116) to the transmitter, and the channel quality threshold is decreased (118). A traffic signal quality may be measured (72) and compared (88) to a traffic signal quality threshold (86). The result of the comparison (132) may be used to adjust (134) the channel quality threshold (82). The traffic signal quality threshold may be adjusted (90, 126, 128) in response to whether or not a frame error is detected (74, 124).

摘要翻译： 在使用功率控制命令来控制所发射的业务信道（58）的功率的无线通信系统中，来自发射机（64）的信号经由信道被接收（104）。 使用来自发射机的信号测量信道质量（70,108）。 响应于测量的信道质量（70）超过（80,110）信道质量阈值（82），向发射机发送减少的业务信道功率命令（112），并增加信道质量阈值（114）。 响应于超过（80,110）所测量的信道质量（70）的信道质量阈值（82），向发射机发送增加业务信道功率命令（116），并减少信道质量阈值（118）。 可以测量交通信号质量（72）并将其与交通信号质量阈值（86）进行比较（88）。 比较（132）的结果可以用于调整（134）信道质量阈值（82）。 响应于是否检测到帧错误（74,124），可以调整交通信号质量阈值（90,126,128）。

公开(公告)号：US08867570B2

公开(公告)日：2014-10-21

申请号：US11823692

申请日：2007-06-28

申请人： Sriram Mudulodu ,  Rajesh Raja Manakkal ,  Sam P. Alex ,  Louay Jalloul

发明人： Sriram Mudulodu ,  Rajesh Raja Manakkal ,  Sam P. Alex ,  Louay Jalloul

IPC分类号： H04B3/10 ,  H04B7/04 ,  H04L5/00 ,  H04B7/06 ,  H04W52/32 ,  H04L27/26

CPC分类号： H04B7/0452 ,  H04B7/068 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/0042 ,  H04L5/005 ,  H04L5/0051 ,  H04L27/2657 ,  H04W52/325

摘要： A method and apparatus of transmitting pilot tones and data in multi-carrier spatial multiplexing transmission is disclosed. The method includes a plurality of subscribers transmitting data to a base station through common frequency sub-carrier and symbol time tiles. Each of the multiple subscribers rotating frequency sub-carrier and symbol time locations of pilot tones within the frequency sub-carrier and symbol time tiles.

摘要翻译： 公开了一种在多载波空间复用传输中发送导频音和数据的方法和装置。 该方法包括多个用户通过公共频率子载波和符号时间块向基站发送数据。 多个用户中的每一个在频率子载波和符号时间瓦片内旋转导频音调的频率子载波和符号时间位置。

公开(公告)号：US08867459B2

公开(公告)日：2014-10-21

申请号：US12837400

申请日：2010-07-15

申请人： Djordje Tujkovic ,  Louay Jalloul ,  Bertrand Hochwald

发明人： Djordje Tujkovic ,  Louay Jalloul ,  Bertrand Hochwald

IPC分类号： H04W4/00 ,  H04L5/00 ,  H04W72/04 ,  H01Q3/26 ,  H04W28/06 ,  H04W76/02

CPC分类号： H04L5/003 ,  H01Q3/2682 ,  H04L5/0007 ,  H04W28/065 ,  H04W72/04 ,  H04W76/10

摘要： Methods and apparatuses of a mobile subscriber transmitting information to a base station are disclosed. One method includes identifying an uplink transmission condition. If the uplink transmission condition is identified, the mobile subscriber transmits a message over multiple uplink frames. The mobile subscriber informs the base station that it is transmitting the message over the multiple uplink frames.

摘要翻译： 公开了向基站发送信息的移动用户的方法和装置。 一种方法包括识别上行链路传输条件。 如果识别出上行链路传输条件，则移动用户通过多个上行链路帧发送消息。 移动用户通知基站它正在多个上行链路帧上发送消息。

公开(公告)号：US08553819B2

公开(公告)日：2013-10-08

申请号：US13448275

申请日：2012-04-16

申请人： Sriram Mudulodu ,  Louay Jalloul

发明人： Sriram Mudulodu ,  Louay Jalloul

IPC分类号： H04L1/02

CPC分类号： H04L27/2626 ,  H04L5/0023 ,  H04L27/2647

摘要： Method and system for wireless communication in an Orthogonal Frequency Division Multiplexing (OFDM) communication system is disclosed. The method involves receiving a plurality of receive-signals over a first set of antennas. Further, one or more of the plurality of receive-signals are cyclically delayed to generate one or more cyclically delayed receive-signal. Subsequently, one or more of the plurality of receive-signals are combined with one or more of the cyclically delayed receive-signals. In other words, the method involves performing receive Cyclic Delay Diversity (CDD).

摘要翻译： 公开了正交频分复用（OFDM）通信系统中无线通信的方法和系统。 该方法涉及通过第一组天线接收多个接收信号。 此外，多个接收信号中的一个或多个被循环地延迟以产生一个或多个循环延迟的接收信号。 随后，多个接收信号中的一个或多个与一个或多个循环延迟的接收信号组合。 换句话说，该方法涉及执行接收循环延迟分集（CDD）。

公开(公告)号：US08488610B2

公开(公告)日：2013-07-16

申请号：US11803974

申请日：2007-05-16

申请人： Kameswara Medapalli ,  Louay Jalloul ,  Kamlesh Rath

发明人： Kameswara Medapalli ,  Louay Jalloul ,  Kamlesh Rath

IPC分类号： H04L12/56

CPC分类号： H04L5/0023 ,  H04L1/1887 ,  H04L1/1893 ,  H04L5/0046 ,  H04L2001/0092

摘要： A method and system for communicating packets in a Wireless Multicast and Broadcast communication network is provided. The method includes selecting a Modulation and Coding Scheme (MCS) for transmission of a packet. The packet is then transmitted using the selected MCS on at least one of a subset of available time slots, a subset of available frequency sub-carriers and a subset of available antennas. Thereafter, it is autonomously decided whether the plurality of transmitters are to retransmit the packet. Then, the packet is retransmitted on at least one of a different subset of time slots, a different subset of frequency sub-carriers and a different subset of antennas.

摘要翻译： 提供了一种用于在无线组播和广播通信网络中传送分组的方法和系统。 该方法包括选择用于传输分组的调制和编码方案（MCS）。 然后使用所选择的MCS在可用时隙的子集，可用频率子载波的子集和可用天线的子集中的至少一个上发送分组。 此后，自主决定多个发射机是否要重发分组。 然后，在时隙的不同子集，频率子载波的不同子集和不同的天线子集中的至少一个上重传分组。

公开(公告)号：US08311003B2

公开(公告)日：2012-11-13

申请号：US12456562

申请日：2009-06-18

申请人： Kameswara Medapalli ,  Djordje Tujkovic ,  Kamlesh Rath ,  Louay Jalloul ,  Bertrand Hochwald

发明人： Kameswara Medapalli ,  Djordje Tujkovic ,  Kamlesh Rath ,  Louay Jalloul ,  Bertrand Hochwald

IPC分类号： H04W4/00 ,  H04J3/16

CPC分类号： H04W72/085 ,  H04L1/002 ,  H04L5/0007 ,  H04L5/006 ,  H04L5/0094

摘要： Embodiments for a method and apparatus of selecting a transmission mode between the subscriber and a base station are disclosed. One method includes determining a predictive window. Instantaneous channel quality measurements are averaged, wherein the averaging is dependent upon a size of the predictive window. A first estimate of the transmission mode is determined based on the averaged instantaneous channel quality measurements. A margin is calculated based on reception of a qualifying downlink transmission. The transmission mode is selected by updating the first estimate with the margin.

摘要翻译： 公开了在用户和基站之间选择传输模式的方法和装置的实施例。 一种方法包括确定预测窗口。 对瞬时信道质量测量进行平均，其中平均取决于预测窗口的大小。 基于平均的瞬时信道质量测量来确定传输模式的第一估计。 基于合格的下行链路传输的接收来计算余量。 通过用余量更新第一估计来选择传输模式。

公开(公告)号：US08295775B2

公开(公告)日：2012-10-23

申请号：US12150862

申请日：2008-05-01

申请人： Louay Jalloul ,  Djordje Tujkovic ,  Anupama Lakshmanan

发明人： Louay Jalloul ,  Djordje Tujkovic ,  Anupama Lakshmanan

IPC分类号： H04B17/00

CPC分类号： H04W36/30 ,  H04B17/26 ,  H04B17/318 ,  H04B17/382 ,  H04W24/08

摘要： A method and apparatus of determining a hand-off metric is disclosed. One method includes a subscriber receiving identifications of a neighboring set of base stations from a serving base station. From the neighboring set, the subscriber determines an active set of base stations. The active set is determined by the subscriber measuring received signal power from each of the base stations of the neighboring set at first discrete points in time, averaging the received signal power for each of the base stations of the neighboring set, and selecting the active set based on the average received signal power of the base stations of the neighboring set. Determining the at least one hand-off metric further includes the subscriber measuring at second discrete points in time an excess received signal power for each base station of the active set, wherein the excess received signal power includes signal power received by the subscriber in excess of power received from the base station. The subscriber averages the excess received signal power. The subscriber calculates the hand-off metric by calculating a ratio of average receive signal power to average excess received signal power, for each base station of the active set.

摘要翻译： 公开了一种确定越区切换度量的方法和装置。 一种方法包括订户从服务基站接收相邻的一组基站的标识。 用户从相邻集合确定一组活跃的基站。 该用户确定用户在第一离散时间点测量来自相邻集合的每个基站的接收信号功率，对邻近集合中的每个基站的接收信号功率进行平均，并选择活动集合 基于相邻集合的基站的平均接收信号功率。 确定所述至少一个切换度量还包括所述用户在时间上在所述有效集合的每个基站处在第二离散点处测量多余的接收信号功率，其中所述多余的接收信号功率包括由所述用户接收的信号功率超过 从基站接收的功率。 用户对多余的接收信号功率进行平均。 用户通过计算平均接收信号功率与平均超出接收信号功率的比率来计算切换度量，对于活动集合的每个基站。

公开(公告)号：US20120250612A1

公开(公告)日：2012-10-04

申请号：US13076694

申请日：2011-03-31

申请人： Louay Jalloul ,  Mohamed Mostafa

发明人： Louay Jalloul ,  Mohamed Mostafa

IPC分类号： H03D3/24 ,  H04W4/00

CPC分类号： H04W48/16 ,  H03L7/1974 ,  H03L7/23 ,  H04B7/0805 ,  H04B7/0871 ,  H04W36/0022 ,  H04W88/06

摘要： A method and system are provided in which a device comprising a first or main phase locked loop (PLL) and a second or reference PLL, is operable to communicate utilizing a first and a second receiving antenna. The first PLL may generate a first signal based on a reference signal generated by the second PLL. A second signal may also be generated based on the reference signal. Data associated with a first radio access technology (RAT) may be received via the first receiving antenna utilizing the generated first signal. The first RAT or another RAT may be scanned via the second receiving antenna utilizing the generated second signal. The scan via the second receiving antenna may be performed concurrently with the reception of data via the first receiving antenna. A switch may be utilized to enable or disable scanning operations via the second receiving antenna.

摘要翻译： 提供了一种方法和系统，其中包括第一或主锁相环（PLL）和第二或参考PLL的装置可操作以利用第一和第二接收天线进行通信。 第一PLL可以基于由第二PLL产生的参考信号产生第一信号。 也可以基于参考信号产生第二信号。 可以利用所生成的第一信号经由第一接收天线来接收与第一无线电接入技术（RAT）相关联的数据。 利用所生成的第二信号可以经由第二接收天线扫描第一RAT或另一RAT。 经由第二接收天线的扫描可以经由第一接收天线与数据的接收同时执行。 可以利用开关来启用或禁用经由第二接收天线的扫描操作。