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1. 发明申请

WO2007109296A3 DOWNLINK COORDINATED TRANSMISSION IN OFDMA SYSTEMS 审中-公开
标题翻译： OFDMA系统中的下行协调传输
公开(公告)号：WO2007109296A3
公开(公告)日：2008-10-30
申请号：PCT/US2007006976
申请日：2007-03-20
申请人： BECEEM COMMUNICATIONS INC , GARRETT DAVID , HOCHWALD BERTRAND M , PAULRAJ AROGYASWAMI , TUJKOVIC DJORDJE , JALLOUL LOUAY
发明人： GARRETT DAVID , HOCHWALD BERTRAND M , PAULRAJ AROGYASWAMI , TUJKOVIC DJORDJE , JALLOUL LOUAY
IPC分类号： H04B7/204
CPC分类号： H04L5/0058 , H04L5/0023 , H04L5/0037 , H04L5/023 , H04L27/2608 , H04W16/10 , H04W16/24 , H04W72/082 , H04W72/085
摘要： Embodiments described herein include methods for improving the SINR, and therefore communication quality or rate, in the downlink of a cellular communication system. In an embodiment, the system is an orthogonal-frequency- division multiple-access (OFDMA) system. In an embodiment, a set of terminals is designated a coordinated-transmission group. The set of terminal is chosen such that the slot-allocations of the set are given special treatment to alleviate interference from other sectors or cells. All terminals within a coordination group generally use the same slot, but embodiments are not so limited.
摘要翻译：本文描述的实施例包括用于在蜂窝通信系统的下行链路中改善SINR以及因此通信质量或速率的方法。在一个实施例中，该系统是正交频分多址（OFDMA）系统。在一个实施例中，一组终端被指定为协调传输组。选择终端的集合，使得该组的时隙分配被给予特殊处理以减轻来自其他扇区或小区的干扰。协调组中的所有终端通常使用相同的时隙，但实施例不限于此。

2. 发明申请

WO2007117468A3 METHOD AND SYSTEM FOR UPLINK COORDINATED RECEPTION IN ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS SYSTEMS 审中-公开
标题翻译：正交频分多址接入系统中上行链路协调接收的方法与系统
公开(公告)号：WO2007117468A3
公开(公告)日：2008-08-28
申请号：PCT/US2007008310
申请日：2007-03-30
申请人： BECEEM COMMUNICATIONS INC , JALLOUL LOUAY , TUJKOVIC DJORDJE , SHASHIDHAR VUMMINTALA , HOCHWALD BERTRAND , PAULRAJ AROGYASWAMI
发明人： JALLOUL LOUAY , TUJKOVIC DJORDJE , SHASHIDHAR VUMMINTALA , HOCHWALD BERTRAND , PAULRAJ AROGYASWAMI
IPC分类号： H04B7/00 , H04B7/185 , H04B17/00
CPC分类号： H04W72/082 , H04B7/0491 , H04L5/023 , H04L2025/03414 , H04L2025/03426 , H04W52/24 , H04W52/241 , H04W52/243
摘要： Embodiments disclose a method of coordinating reception of uplink transmissions in order to reduce interference among transceivers in an OFDM wireless transmission system, or similar communication system, including a number of receivers communicating with one or more basestations in cell or sector arrangements. A basestation within each sector includes an uplink coordinated reception process that imposes coordinated reception techniques across sector or cell boundaries in order to improve uplink transmission quality between target terminals and basestations within each sector.
摘要翻译：实施例公开了一种协调上行链路传输的接收的方法，以便减少OFDM无线传输系统中的收发器之间的干扰，或者类似的通信系统，包括与小区或扇区布置中的一个或多个基站通信的多个接收机。每个扇区内的基站包括上行链路协调接收过程，其跨扇区或小区边界施加协调的接收技术，以便改善目标终端与每个扇区内的基站之间的上行传输质量。

3. 发明申请

WO2006023587A2 A METHOD AND SYSTEM FOR MAXIMUM TRANSMIT DIVERSITY 审中-公开
标题翻译：一种用于最大传输多样性的方法和系统
公开(公告)号：WO2006023587A2
公开(公告)日：2006-03-02
申请号：PCT/US2005029302
申请日：2005-08-16
申请人： BECEEM COMMUNICATIONS INC , VUMMINTALA SHASHIDHAR , PAULRAJ AROGYASWAMI , LINDSKOG ERIK D , RAJAN BALAJI S , TUJKOVIC DJORDJE
发明人： VUMMINTALA SHASHIDHAR , PAULRAJ AROGYASWAMI , LINDSKOG ERIK D , RAJAN BALAJI S , TUJKOVIC DJORDJE
IPC分类号： H04B7/02
CPC分类号： H04B7/0678 , H04L1/0606 , H04L1/0643 , H04L1/0668
摘要： A communication system is provided that includes signal encoding in a multiple input multiple output system. The communication system includes wireless communication networks. The communication system includes methods of encoding and transmitting symbols in a rate-1 complex symbol per second per Hertz transmission system while achieving maximum diversity. The communication further includes methods of interleaving the complex symbols such that each interleaved symbol comprises information of at least two complex symbols where the complex symbols obtain values from a rotated constellation.
摘要翻译：提供了一种在多输入多输出系统中包括信号编码的通信系统。通信系统包括无线通信网络。通信系统包括以每赫兹传输系统每秒速率1复杂符号编码和发送符号的方法，同时实现最大分集。该通信还包括对复数符号进行交织的方法，使得每个交错符号包括复数符号从旋转星座获得值的至少两个复符号的信息。

4. 发明申请

WO2007127450A3 A METHOD OF TRAINING A COMMUNICATION SYSTEM 审中-公开
标题翻译：一种通信系统的培训方法
公开(公告)号：WO2007127450A3
公开(公告)日：2008-11-06
申请号：PCT/US2007010373
申请日：2007-04-26
申请人： BECEEM COMMUNICATIONS INC , TUJKOVIC DJORDJE , JALLOUL LOUAY , ALEX SAM P , VARAPRASAD J
发明人： TUJKOVIC DJORDJE , JALLOUL LOUAY , ALEX SAM P , VARAPRASAD J
IPC分类号： H04B1/38 , H04M1/00 , H04Q7/20
CPC分类号： H04L27/2602 , H04B7/0691 , H04B7/0874 , H04L1/0001 , H04L1/20 , H04L5/0023 , H04L5/0048 , H04L5/006 , H04L5/0085 , H04L25/0204 , H04L25/0226 , H04L27/2608 , H04L27/261
摘要： A method and system of training a communication system is disclosed. The method includes a first transceiver transmitting signals through one or more antennas of the first transceiver. A second transceiver selects a subset of a plurality of antennas of the second transceiver, wherein the selected subset provides a largest aggregate received signal power. The second transceiver transmits pilots on a subset of sub-carriers of multi-carrier signals through the selected subset of the plurality of antennas of the second transceiver. The first transceiver receives the pilots, and extracts channel knowledge from the received pilots.
摘要翻译：公开了一种训练通信系统的方法和系统。该方法包括通过第一收发器的一个或多个天线发射信号的第一收发器。第二收发器选择第二收发器的多个天线的子集，其中所选择的子集提供最大的总收信信号功率。第二收发器通过第二收发器的多个天线的选定子集在多载波信号的子载波的子集上发射导频。第一收发器接收导频，并从接收到的导频中提取信道知识。

5. 发明申请

WO2006023588A3 A METHOD AND SYSTEM FOR RATE-2 TRANSMISSION 审中-公开
标题翻译：一种用于速率2传输的方法和系统
公开(公告)号：WO2006023588A3
公开(公告)日：2006-06-01
申请号：PCT/US2005029303
申请日：2005-08-16
申请人： BECEEM COMMUNICATIONS INC , VUMMINTALA SHASHIDHAR , PAULRAJ AROGYASWAMI , LINDSKOG ERIK D , RAJAN BALAJI S , TUJKOVIC DJORDJE
发明人： VUMMINTALA SHASHIDHAR , PAULRAJ AROGYASWAMI , LINDSKOG ERIK D , RAJAN BALAJI S , TUJKOVIC DJORDJE
IPC分类号： H04B7/02
CPC分类号： H04B7/0678 , H04L1/0606 , H04L1/0643 , H04L1/0668
摘要： Signal encoding in a multiple input multiple output system in a wireless communication network is provided. The communication system provides a method of encoding and transmitting symbols in a rate-2 complex symbol per second per Hertz transmission system that achieves a maximum diversity of four for a four transmit antenna system and a diversity of three on a three transmit antenna system. The communication system further provides a method of interleaving the complex symbols such that each interleaved symbol comprises information of at least two complex symbols where the complex symbols obtain values from a rotated constellation.
摘要翻译：提供了在无线通信网络中的多输入多输出系统中的信号编码。通信系统提供了一种以Hertz传输系统每秒的速率2复数符号进行编码和传输符号的方法，其对于四个发射天线系统实现四个最大分集，在三个发射天线系统上实现三分之一。通信系统还提供了一种对复数符号进行交织的方法，使得每个交错符号包括复数符号从旋转星座获得值的至少两个复符号的信息。

6. 发明申请

WO2007024324A2 SUBCARRIER ALLOCATION IN OFDMA WITH IMPERFECT CHANNEL STATE INFORMATION AT THE TRANSMITTER 审中-公开
标题翻译： OFDMA中的SUBCARRIER分配在发射机上具有不正确的信道状态信息
公开(公告)号：WO2007024324A2
公开(公告)日：2007-03-01
申请号：PCT/US2006023748
申请日：2006-06-16
申请人： BECEEM COMM INC , TUJKOVIC DJORDJE , PAULRAJ AROGYASWAMI
发明人： TUJKOVIC DJORDJE , PAULRAJ AROGYASWAMI
IPC分类号： H04B7/216
CPC分类号： H04B7/12 , H04B7/0452 , H04B7/06 , H04L5/023 , H04W72/08
摘要： A system and method for digital communications combine features of multiuser diversity and frequency diversity allocation schemes. The system and method retain advantages of multiuser allocation whenever possible by assigning a fraction, a, of the available bandwidth to users in channels where the users are experiencing high SNR. Recognizing that channel state information at the transmitter is not perfect, however, the system and method allocate the remaining bandwidth, 1 - a, pseudorandomly according to frequency diversity.
摘要翻译：一种用于数字通信的系统和方法结合了多用户分集和频率分集分配方案的特征。该系统和方法通过在用户遇到高SNR的信道中向用户分配可用带宽的一小部分，可能地保持多用户分配的优点。然而，鉴于发射机的信道状态信息不完善，系统和方法根据频率分集来伪随机分配剩余带宽1-a。

7. 发明申请

WO2007089875A3 SELECTING MODULATION AND CODING LEVEL AND SPATIAL RATE FOR ORTHOGONAL FREQUENCY DOMAIN MODULATION SYSTEMS 审中-公开
标题翻译：选择正交频域调制系统的调制和编码水平和空间速率
公开(公告)号：WO2007089875A3
公开(公告)日：2008-02-21
申请号：PCT/US2007002709
申请日：2007-01-31
申请人： BECEEM COMMUNICATIONS INC , TUJKOVIC DJORDJE , LINDSKOG ERIK , PRASAD VARA , GOWRISANKAR SOMICHETTY , WESTMAN ERIC
发明人： TUJKOVIC DJORDJE , LINDSKOG ERIK , PRASAD VARA , GOWRISANKAR SOMICHETTY , WESTMAN ERIC
IPC分类号： H04L1/02
CPC分类号： H04B7/0413 , H04L1/0003 , H04L1/0009 , H04L27/2626
摘要： Embodiments are directed to a link adaptation method that selects the optimum transmission scheme and modulation and coding signal (MCS) level within a MIMO system, based on optimal maximum throughput on the channels. The method selects the MCS levels and spatial rate values for broadband communication systems based on the instantaneous broadband MIMO-OFDM signaling capacities. The transmission rate over the transmission channel is selected based on a comparison of the capacities achieved under diversity coding and spatial multiplexing MlMO transmission schemes. The effect of a particular receiver type or implementation can also be factored into the signaling capacity. For a fixed target probability of error, the scheme or spatial rate that has the higher instantaneous throughput is selected for transmission.
摘要翻译：实施例涉及一种基于信道上的最佳最大吞吐量来选择MIMO系统内的最佳传输方案和调制和编码信号（MCS）级别的链路自适应方法。该方法基于瞬时宽带MIMO-OFDM信令容量选择宽带通信系统的MCS级别和空间速率值。基于在分集编码和空间复用M10M传输方案下实现的容量的比较来选择传输信道上的传输速率。特定接收机类型或实现的效果也可以被认为是信令容量。对于固定的目标误差概率，选择具有较高瞬时吞吐量的方案或空间速率进行传输。

8. 发明申请

WO2012170820A2 CONTROLLING A TRANSMIT PATH BASED ON MONITORED ERROR VECTOR MAGNITUDE (EVM) PERFORMANCE 审中-公开
标题翻译：基于监控错误矢量磁场（EVM）性能控制传输路径
公开(公告)号：WO2012170820A2
公开(公告)日：2012-12-13
申请号：PCT/US2012041559
申请日：2012-06-08
申请人： BROADCOM CORP , LORENZ ROBERT , TUJKOVIC DJORDJE
发明人： LORENZ ROBERT , TUJKOVIC DJORDJE
IPC分类号： H04B17/00
CPC分类号： H03G3/3042 , H03F1/0216 , H03F1/0261 , H03F1/3247 , H03F1/3294 , H03F3/195 , H03F3/245 , H03F2200/102 , H03F2200/336 , H03F2200/405 , H03F2200/504
摘要： Embodiments provide systems and methods to dynamically control a radio frequency (RF) transmitter based on monitored error vector magnitude (EVM) performance. Embodiments are enabled by a feedback path that allows estimating the EVM at the output of the transmitter and controlling the transmitter, including the power amplifier (PA), accordingly. As such, the transmitter (and the PA) can be operated as close as possible to the ideal operating point that meets, based on actual conditions, a specified EVM performance and desired output power. By doing so, the overall power consumption of the transmitter is reduced.
摘要翻译：实施例提供了基于监测的误差向量幅度（EVM）性能来动态地控制射频（RF）发射机的系统和方法。通过允许估计发射机的输出端的EVM并且相应地控制包括功率放大器（PA）的发射机的反馈路径来实现实施例。因此，发射器（和PA）可以尽可能靠近基于实际条件的指定EVM性能和期望输出功率的理想工作点进行操作。通过这样做，发射机的总功耗降低。

9. 发明申请

WO2007120926A3 MEASURING NOISE POWER AT WIRELESS RECEIVERS USING PILOT SYMBOL INFORMATION 审中-公开
标题翻译：使用引导符号信息测量无线接收器的噪音
公开(公告)号：WO2007120926A3
公开(公告)日：2008-06-26
申请号：PCT/US2007009570
申请日：2007-04-19
申请人： BECEEM COMM INC , TUJKOVIC DJORDJE , XIA YING , LORENZ ROBERT , MUDULODU SRIRAM
发明人： TUJKOVIC DJORDJE , XIA YING , LORENZ ROBERT , MUDULODU SRIRAM
IPC分类号： H04B1/00 , H04B3/46 , H04B17/00
CPC分类号： H04B17/345 , H04B17/26 , H04B2201/70701 , H04L25/0224 , H04L2025/03414 , H04L2025/03426
摘要： Embodiments are directed to a wireless receiver system that utilizes a special structure of pilot symbols used for synchronization and channel estimation in transmission packets to measure noise power at the receiver. The periodicity of the pilot signal sequences is used to extract the noise power from the received signal. Such extraction is achieved by subtracting the received signals from two pilot slots which are separated by the known periodicity of the training sequence. This method relies on the fact that desired signal and system interference signals will cancel out after the subtraction process. Measuring the power of the residual signal after subtraction represents the estimate of the noise power. Several consecutive such residual signals can be first summed up before measuring the power to improve the estimate of the noise power at the receiver. To further improve the performance, estimates of the desired signal produced by a channel estimation block can be first subtracted from each of the received signals on two pilot slots which are then to be subtracted and are separated by the known periodicity of the pilot sequence.
摘要翻译：实施例涉及一种无线接收机系统，其利用用于传输分组中的同步和信道估计的导频符号的特殊结构来测量接收机处的噪声功率。导频信号序列的周期性用于从接收信号中提取噪声功率。通过从由训练序列的已知周期分隔的两个导频时隙中减去接收到的信号来实现这种提取。该方法依赖于在减法处理之后所期望的信号和系统干扰信号将被抵消的事实。减去后测量残留信号的功率表示噪声功率的估计。在测量功率之前可以首先总结几个连续的这样的残余信号，以改善接收机噪声功率的估计。为了进一步提高性能，可以首先从两个导频时隙上的每个接收信号中减去由信道估计块产生的期望信号的估计值，然后被减去并且被导频序列的已知周期分隔。

10. 发明专利

IN266795B A CELLULAR COMMUNICATION METHOD FOR IMPROVING COMMUNICATION QUALITY OR RATE, IN THE DOWNLINK OF A CELLULAR COMMUNICATION SYSTEM 未知
公开(公告)号：IN266795B
公开(公告)日：2015-06-03
申请号：IN2011MUN2008
申请日：2008-09-19
申请人： BECEEM COMMUNICATIONS INC
发明人： GARRETT DAVID , HOCHWALD BERTRAND M , PAULRAJ AROGYASWAMI , TUJKOVIC DJORDJE , JALLOUL LOUAY
IPC分类号： H04B7/204
摘要： Embodiments described herein include methods for improving the SINR, and therefore communication quality or rate, in the downlink of a cellular communication system. In an embodiment, the system is an orthogonal-frequency-division multiple-access (OFDMA) system. In an embodiment, a set of terminals is designated a coordinated-transmission group. The set of terminal is chosen such that the slot-allocations of the set are given special treatment to alleviate interference from other sectors or cells. All terminals within a coordination group generally use the same slot, but embodiments are not so limited.

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