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1. 发明申请

WO2005057870A1 MULTI-ANTENNA SYSTEM TO SIMULTANEOUS SUPPORT OF MISO AND MIMO RECEIVERS 审中-公开
标题翻译：多天线系统同时支持MISO和MIMO接收机
公开(公告)号：WO2005057870A1
公开(公告)日：2005-06-23
申请号：PCT/US2004/040429
申请日：2004-12-03
申请人： QUALCOMM INCORPORATED , GORE, Dhananjay, Ashok , AGRAWAL, Avneesh , KADOUS, Tamer
发明人： GORE, Dhananjay, Ashok , AGRAWAL, Avneesh , KADOUS, Tamer
IPC分类号： H04L25/02
CPC分类号： H04L25/0226 , H04B7/0452 , H04B7/0684 , H04L27/2613
摘要： Efficient pilot transmission schemes for multi-antenna communication systems are described. In general, MISO receivers prefer a pilot transmitted in one spatial direction, and MIMO receivers typically require a pilot transmitted in different spatial directions. In one pilot transmission scheme, a first set of T scaled pilot symbols is generated with a first training vector and transmitted (e.g., continuously) from T transmit antennas, where T > 1. If MIMO receiver(s) are to be supported by the system, then at least T-1 additional sets of T scaled pilot symbols are generated with at least T-1 additional training vectors and transmitted from the T transmit antennas. The training vectors are for different (e.g., orthogonal) spatial directions. Each MISO receiver can estimate its MISO channel based on the first set of scaled pilot symbols. Each MIMO receiver can estimate its MIMO channel based on the first and additional sets of scaled pilot symbols.
摘要翻译：描述了用于多天线通信系统的有效导频传输方案。通常，MISO接收机优选在一个空间方向上发送的导频，并且MIMO接收机通常需要在不同空间方向上发送的导频。在一个导频传输方案中，利用第一训练向量生成第一组T比例导频符号，并从T个发射天线发射（例如，连续地），其中T> 1。如果MIMO接收机将由系统，则至少T-1个额外的T比例导频符号集合至少产生T-1个附加训练向量并从T个发射天线发射。训练矢量用于不同的（例如正交的）空间方向。每个MISO接收机可以基于第一组缩放的导频符号来估计其MISO信道。每个MIMO接收机可以基于第一个和额外的缩放导频符号集来估计其MIMO信道。

2. 发明申请

WO2006020020A1 MULTIPLE MODULATION SCHEMES IN SINGLE RATE LAYERING WIRELESS COMMUNICATION SYSTEMS 审中-公开
标题翻译：单速无线通信系统中的多种调制方案
公开(公告)号：WO2006020020A1
公开(公告)日：2006-02-23
申请号：PCT/US2005/025156
申请日：2005-07-15
申请人： QUALCOMM INCORPORATED , GOROKHOV, Alexei , AGRAWAL, Avneesh , GORE, Dhananjay Ashok , KADOUS, Tamer
发明人： GOROKHOV, Alexei , AGRAWAL, Avneesh , GORE, Dhananjay Ashok , KADOUS, Tamer
IPC分类号： H04L1/06
CPC分类号： H04L1/005 , H04L1/0003 , H04L1/0041 , H04L1/06
摘要： A MIMO communication system is adapted to encode multiple data streams at the same adaptable rate. Accordingly, the set of all possible modulation/rate combinations to all modulations with common rates is decreased thus resulting in the reduction of the number of possible packet formats carrying the data streams. Rate prediction is made more error-resilient, in part, due to the averaging over all information rates. Furthermore, the signaling overhead of the packets is reduced. Therefore, the tradeoff between the desired transmission rate granularity on the one hand, and robustness /signaling overhead on the other hand, is controlled by adjusting the coding rate.
摘要翻译： MIMO通信系统适于以相同的可适应速率对多个数据流进行编码。因此，对具有公共速率的所有调制的所有可能的调制/速率组合的集合被减少，从而导致承载数据流的可能分组格式的数量的减少。速率预测更具有弹性，部分原因是由于所有信息速率的平均值。此外，分组的信令开销减小。因此，通过调整编码率来控制一方面期望的传输速率粒度与鲁棒性/信令开销之间的权衡。

3. 发明申请

WO2006019708A1 PILOT TRANSMISSION AND CHANNEL ESTIMATION FOR MULTIPLE TRANSMITTERS 审中-公开
标题翻译：多台发射机的导频传输和信道估计
公开(公告)号：WO2006019708A1
公开(公告)日：2006-02-23
申请号：PCT/US2005/024612
申请日：2005-07-11
申请人： QUALCOMM INCORPORATED , GORE, Dhananjay Ashok , AGRAWAL, Avneesh , KADOUS, Tamer
发明人： GORE, Dhananjay Ashok , AGRAWAL, Avneesh , KADOUS, Tamer
IPC分类号： H04L25/02
CPC分类号： H04L25/0204 , H04L25/0212 , H04L25/0226 , H04L27/261
摘要： Each transmitter is assigned a time-only pilot code, a frequency-only pilot code, or a time-frequency pilot code to use for pilot transmission. The pilot codes may be pseudo-random, orthogonal, and/or cyclic-shift codes. To obtain a channel estimate for a transmitter using a time-frequency pilot code composed of a time-only code and a frequency-only code, a receiver multiplies a set of received symbols for each symbol period with a set of code values for the frequency-only code to obtain a set of detected symbols and performs an IDFT on the set of detected symbols to obtain an initial impulse response estimate. The receiver performs code matching on multiple initial impulse response estimates derived for multiple symbol periods with the time-only code to obtain a final impulse response estimate for the desired transmitter. The receiver retains the first L channel taps and zeroes out remaining channel taps, where L is the expected channel length.
摘要翻译：为每个发射机分配一个仅时间导频码，仅频率导频码或用于导频传输的时频导频码。导频码可以是伪随机，正交和/或循环移位码。为了使用由时间唯一码和仅频率码构成的时频导频码来获得用于发射机的信道估计，接收机将用于每个符号周期的一组接收符号与频率的一组码值相乘 - 获得一组检测符号的代码，并对检测符号集合执行IDFT以获得初始脉冲响应估计。接收机对具有多个符号周期的多个初始脉冲响应估计执行码匹配，其中仅使用时间码来获得所需发射机的最终脉冲响应估计。接收器保留第一个L个通道抽头，并将剩余的通道抽头置零，其中L是预期的通道长度。

4. 发明申请

WO2005094023A1 PILOT TRANSMISSION AND CHANNEL ESTIMATION FOR MISO AND MIMO SYSTEM 审中-公开
标题翻译： MISO和MIMO系统的PILOT传输和信道估计
公开(公告)号：WO2005094023A1
公开(公告)日：2005-10-06
申请号：PCT/US2005/006906
申请日：2005-03-02
申请人： QUALCOMM INCORPORATED , KADOUS, Tamer , AGRAWAL, Avneesh , GORE, Dhananjay, Ashok
发明人： KADOUS, Tamer , AGRAWAL, Avneesh , GORE, Dhananjay, Ashok
IPC分类号： H04L25/02
CPC分类号： H04L25/0226 , H04B7/0684
摘要： A transmitter generates multiple composite pilots with a training matrix and a gain matrix. Each composite pilot includes multiple training pilots generated with multiple columns of the training matrix and scaled with multiple gain elements in a column of the gain matrix. The transmitter transmits each composite pilot via multiple transmit antennas. A MISO receiver obtains received symbols for the multiple composite pilots and derives an estimate of a composite MISO channel. For OFDM, the MISO receiver derives an initial impulse response estimate for each composite pilot, filters the initial impulse response estimates for all composite pilots, and derives a frequency response estimate for the composite MISO channel. A MIMO receiver obtains and processes received symbols for the multiple composite pilots based on the training and gain matrices and derives channel estimates for individual SISO channels between the multiple transmit antennas and multiple receive antennas.
摘要翻译：发射机生成具有训练矩阵和增益矩阵的多个复合导频。每个复合导频包括由训练矩阵的多列生成的多个训练导频，并且在增益矩阵的列中用多个增益元素进行了缩放。发射机经由多个发射天线发送每个复合导频。 MISO接收器获得用于多个复合导频的接收符号，并导出复合MISO信道的估计。对于OFDM，MISO接收机为每个复合导频导出初始脉冲响应估计，对所有复合导频进行初始脉冲响应估计，并得出复合MISO信道的频率响应估计。 MIMO接收机基于训练和增益矩阵获得并处理多个复合导频的接收符号，并导出多个发射天线与多个接收天线之间的各个SISO信道的信道估计。

5. 发明申请

WO2006099348A1 SYSTEMS AND METHODS FOR BEAMFORMING IN MULTI-INPUT MULTI-OUTPUT COMMUNICATION SYSTEMS 审中-公开
标题翻译：用于多输入多输出通信系统中的波束形成的系统和方法
公开(公告)号：WO2006099348A1
公开(公告)日：2006-09-21
申请号：PCT/US2006/008986
申请日：2006-03-09
申请人： QUALCOMM INCORPORATED , SAMPATH, Hemanth , KADOUS, Tamer , GOROKHOV, Alexei , GORE, Dhananjay, Ashok
发明人： SAMPATH, Hemanth , KADOUS, Tamer , GOROKHOV, Alexei , GORE, Dhananjay, Ashok
IPC分类号： H04B7/06 , H04L27/26
CPC分类号： H04B7/0417 , H04B7/0617 , H04B7/063 , H04B7/0632 , H04L5/023 , H04L25/0224 , H04L27/261
摘要： Methods and apparatuses are disclosed that utilize information from less than all transmission paths from a transmitter to form beamforming weights for transmission. In addition, methods and apparatuses are disclosed that utilize channel information, such as CQI, eigenbeam weights, and/or channel estimates, to form beamforming weights.
摘要翻译：公开了利用来自发射机的小于所有传输路径的信息以形成用于传输的波束成形权重的方法和装置。此外，公开了利用诸如CQI，本征光束权重和/或信道估计之类的信道信息来形成波束成形权重的方法和装置。

6. 发明申请

WO2007038356A1 METHOD AND APPARATUS FOR PILOT COMMUNICATION IN A MULTI-ANTENNA WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：多天线无线通信系统中的通信通信方法与装置
公开(公告)号：WO2007038356A1
公开(公告)日：2007-04-05
申请号：PCT/US2006/037129
申请日：2006-09-22
申请人： QUALCOMM INCORPORATED , GORE, Dhananjay Ashok , JI, Tingfang , KADOUS, Tamer
发明人： GORE, Dhananjay Ashok , JI, Tingfang , KADOUS, Tamer
IPC分类号： H04B7/04 , H04L25/02 , H04L27/26
CPC分类号： H04L27/2613 , H04B7/0413 , H04L25/0226
摘要： Systems and methodologies are described that facilitate improved pilot information to MIMO user devices without increasing interference of SISO user devices in a wireless communication environment. A data communication signal can be generated and transmitted at a first power level, and a continuous pilot waveform comprising pilot information related to the data signal can be generated and sent at a second power level below the first transmission power level. Alternatively, a discontinuous pilot waveform can be generated so that it does not overlap with pilot segments in the first waveform, and can be transmitted at the first power level without interfering with the first waveform as received by a SISO user device. A MIMO user device can receive both waveforms, and can employ the pilot waveform to better estimate a MIMO channel for the first waveform.
摘要翻译：描述了在不增加SISO用户设备在无线通信环境中的干扰的情况下便于将改进的导频信息改进到MIMO用户设备的系统和方法。可以以第一功率电平生成并发送数据通信信号，并且可以以低于第一发送功率电平的第二功率电平生成包括与数据信号相关的导频信息的连续导频波形。或者，可以生成不连续的导频波形，使得其不与第一波形中的导频段重叠，并且可以在不干扰由SISO用户设备接收的第一波形的情况下以第一功率电平发送。 MIMO用户设备可以接收两个波形，并且可以使用导频波形来更好地估计用于第一波形的MIMO信道。

7. 发明申请

WO2006102639A1 SYSTEMS AND METHODS FOR BEAMFORMING FEEDBACK IN MULTI ANTENNA COMMUNICATION SYSTEMS 审中-公开
标题翻译：在多天线通信系统中建立反馈的系统和方法
公开(公告)号：WO2006102639A1
公开(公告)日：2006-09-28
申请号：PCT/US2006/010962
申请日：2006-03-24
申请人： QUALCOMM INCORPORATED , SAMPATH, Hemanth , KHANDEKAR, Aamod , GORE, Dhananjay Ashok , GOROKHOV, Alexei , KADOUS, Tamer
发明人： SAMPATH, Hemanth , KHANDEKAR, Aamod , GORE, Dhananjay Ashok , GOROKHOV, Alexei , KADOUS, Tamer
IPC分类号： H04B7/06
CPC分类号： H04B7/0634 , H04B7/0417 , H04B7/0617 , H04B7/063 , H04B7/0632 , H04B7/0639 , H04B7/0645
摘要： Methods and apparatuses are disclosed that determine whether to feedback, and the amount of feedback, with respect to eigenbeam information based upon channel resources. Additionally, methods and apparatuses are disclosed that determine whether to feedback, and the amount of feedback, with respect to eigenbeam information based upon channel information and changes in channel information.
摘要翻译：公开了基于信道资源来确定是否反馈和相对于本征光束信息的反馈量的方法和装置。此外，公开了基于频道信息和频道信息的改变来确定是否反馈和相对于特征波束信息的反馈量的方法和装置。

8. 发明申请

WO2007117318A2 AVERAGE-TAP ENERGY BASED THRESHOLDING FOR CHANNEL ESTIMATION IN MULTI ANTENNA SYSTEMS 审中-公开
标题翻译：用于多天线系统中通道估计的平均能量能量阈值
公开(公告)号：WO2007117318A2
公开(公告)日：2007-10-18
申请号：PCT/US2006/061708
申请日：2006-12-06
申请人： QUALCOMM INCORPORATED , NAGUIB, Ayman, Fawzy , GORE, Dhananjay, Ashok , GOROKHOV, Alexei , KADOUS, Tamer
发明人： NAGUIB, Ayman, Fawzy , GORE, Dhananjay, Ashok , GOROKHOV, Alexei , KADOUS, Tamer
CPC分类号： H04L27/2647 , H04L1/0631 , H04L25/022
摘要： Techniques to facilitate estimating the frequency response of a wireless channel in an OFDM system are provided. The method and systems allow for combining signal information across multiple communication channels at one or more channel tap delays in order to determine appropriate taps for channel information.
摘要翻译：提供了有助于估计OFDM系统中的无线信道的频率响应的技术。所述方法和系统允许在一个或多个信道抽头延迟的情况下在多个通信信道上组合信号信息，以便确定用于信道信息的合适的抽头。

9. 发明申请

WO2007024935A3 METHOD AND APPARATUS FOR ANTENNA SELECTION IN A MIMO SYSTEM 审中-公开
公开(公告)号：WO2007024935A3
公开(公告)日：2007-03-01
申请号：PCT/US2006/032900
申请日：2006-08-22
申请人： QUALCOMM INCORPORATED , KADOUS, Tamer , KHANDEKAR, Aamod , GORE, Dhananjay, Ashok , GOROKHOV, Alexei
发明人： KADOUS, Tamer , KHANDEKAR, Aamod , GORE, Dhananjay, Ashok , GOROKHOV, Alexei
IPC分类号： H04B7/06
摘要： Transmission schemes that can flexibly achieve the desired spatial multiplexing order, spatial diversity order, and channel estimation overhead order are described. For data transmission, the assigned subcarriers and spatial multiplexing order (M) for a receiver are determined, where M ≥ 1. For each assigned subcarrier, M virtual antennas are selected from among V virtual antennas formed with V columns of an orthonormal matrix, where V ≥ M. V may be selected to achieve the desired spatial diversity order and channel estimation overhead order. Output symbols are mapped to the M virtual antennas selected for each assigned subcarrier by applying the orthonormal matrix. Pilot symbols are also mapped to the V virtual antennas. The mapped symbols are provided for transmission from T transmit antennas, where T ≥ V. Transmission symbols are generated for the mapped symbols, e.g., based on OFDM or SC-FDMA. Different cyclic delays may be applied for the T transmit antennas to improve diversity.

10. 发明申请

WO2006138581A2 ADAPTIVE SECTORIZATION IN CELLULAR SYSTEMS 审中-公开
标题翻译：细胞系统中的自适应分布
公开(公告)号：WO2006138581A2
公开(公告)日：2006-12-28
申请号：PCT/US2006/023514
申请日：2006-06-15
申请人： QUALCOMM INCORPORATED , GORE, Dhananjay Ashok , GOROKHOV, Alexei , SAMPATH, Hemanth , JI, Tingfang , KADOUS, Tamer
发明人： GORE, Dhananjay Ashok , GOROKHOV, Alexei , SAMPATH, Hemanth , JI, Tingfang , KADOUS, Tamer
IPC分类号： H04Q7/20
CPC分类号： H04W16/00 , H04B7/0408 , H04B7/0695 , H04W16/24 , H04W16/28 , H04W72/046 , H04W72/085
摘要： Apparatuses and methodologies are described that enhance performance in a wireless communication system using beamforming transmissions. According to one aspect, a set of transmit beams are defined that simultaneously provides for space division multiplexing, multiple-input multiple output (MIMO transmission and opportunistic beamforming. The addition of a wide beam guarantees a minimum acceptable performance for all user devices.
摘要翻译：描述了使用波束成形传输来增强在无线通信系统中的性能的装置和方法。根据一个方面，定义了一组发射波束，其同时提供空分多路复用，多输入多输出（MIMO传输和机会波束成形）。增加宽波束保证所有用户设备的最小可接受性能。

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