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1. 发明申请

WO2006023705A1 UNIFIED PULSE SHAPING FOR MULTI-CARRIER AND SINGLE-CARRIER WAVEFORMS 审中-公开
标题翻译：用于多载波和单载波波形的统一脉冲形状
公开(公告)号：WO2006023705A1
公开(公告)日：2006-03-02
申请号：PCT/US2005/029506
申请日：2005-08-19
申请人： QUALCOMM INCORPORATED , GORE, Dhananjay Ashok , AGRAWAL, Avneesh , KHANDEKAR, Aamod
发明人： GORE, Dhananjay Ashok , AGRAWAL, Avneesh , KHANDEKAR, Aamod
IPC分类号： H04L27/26
CPC分类号： H04L5/0048 , H04L5/0007 , H04L5/0044 , H04L25/03834 , H04L27/0008 , H04L27/2607 , H04L27/2626 , H04L27/2647
摘要： To transmit a multi-carrier signal, a transmitter provides zero symbols for guard subbands, performs OFDM modulation, and filters the resultant time-domain samples with a pulse shaping filter. To transmit a single-carrier signal, the transmitter partitions the single-carrier signal into segments. Each segment contains up to K samples and is padded, if needed, to the length of an OFDM symbol. Each padded segment is transformed from the time domain to the frequency domain to generate a corresponding frequency-domain segment with K symbols. For each frequency-domain segment, the symbols corresponding to the guard subbands are set to zero. Each frequency-domain segment is then transformed from the frequency domain to the time domain to generate a corresponding time-domain segment. A cyclic prefix may or may not be appended to each time-domain segment. Each time-domain segment is filtered with the same pulse shaping filter to generate an output waveform for the single-carrier signal.
摘要翻译：为了发送多载波信号，发射机为保护子带提供零符号，执行OFDM调制，并用脉冲整形滤波器对合成的时域采样进行滤波。为了发送单载波信号，发射机将单载波信号分割成段。每个段包含多达K个样本，并且如果需要，则填充到OFDM符号的长度。每个填充段从时域变换到频域，以产生具有K个符号的对应的频域段。对于每个频域段，对应于保护子带的符号被设置为零。然后将每个频域段从频域变换到时域以产生对应的时域段。循环前缀可以附加到每个时域段，也可以不附加到每个时域段。每个时域分段用相同的脉冲整形滤波器滤波，以产生单载波信号的输出波形。

2. 发明申请

WO2006019709A1 FREQUENCY DOMAIN FILTERING TO IMPROVE CHANNEL ESTIMATION IN MULTICARRIER SYSTEMS 审中-公开
标题翻译：频域滤波以提高多媒体系统中的信道估计
公开(公告)号：WO2006019709A1
公开(公告)日：2006-02-23
申请号：PCT/US2005/024613
申请日：2005-07-11
申请人： QUALCOMM INCORPORATED , GORE, Dhananjay Ashok , AGRAWAL, Avneesh , KHANDEKAR, Aamod , GOROKHOV, Alexei
发明人： GORE, Dhananjay Ashok , AGRAWAL, Avneesh , KHANDEKAR, Aamod , GOROKHOV, Alexei
IPC分类号： H04L27/26
CPC分类号： H04L27/2647 , H04L5/0007 , H04L5/0048 , H04L5/006 , H04L25/022 , H04L25/0226 , H04L25/023
摘要： A channel estimation system comprises a filtering component that selectively scales a plurality of carriers as a function of location of the plurality of carriers within a frequency band, wherein the plurality of carriers comprises at least one data carrier and at least one pilot carrier. A component thereafter extrapolates an observation from the at least one pilot carrier, wherein a channel is estimated as a function of the extrapolated observation. The scaling of the carriers facilitates reducing a flooring effect associated with channel estimation. The filtering component can be employed at a transmitter and/or at a receiver, and can be activated and/or deactivated as a function of a sensed data packet type.
摘要翻译：信道估计系统包括滤波部件，其选择性地按照频带内的多个载波的位置来缩放多个载波，其中多个载波包括至少一个数据载波和至少一个导频载波。然后，组件从至少一个导频载波外推观测，其中，估计信道作为外推观测的函数。载波的缩放有助于减少与信道估计相关的地板效应。滤波组件可以在发射机和/或接收机处采用，并且可以作为感测数据分组类型的功能被激活和/或去激活。

3. 发明申请

WO2007051155A2 PILOT SYMBOL TRANSMISSION IN WIRELESS COMMUNICATION SYSTEMS 审中-公开
标题翻译：无线通信系统中的导频符号传输
公开(公告)号：WO2007051155A2
公开(公告)日：2007-05-03
申请号：PCT/US2006/060287
申请日：2006-10-26
申请人： QUALCOMM INCORPORATED , KHANDEKAR, Aamod , AGRAWAL, Avneesh , GORE, Dhananjay Ashok
发明人： KHANDEKAR, Aamod , AGRAWAL, Avneesh , GORE, Dhananjay Ashok
CPC分类号： H04J13/102 , H04B1/713 , H04L5/0026 , H04L5/0051 , H04L25/0204 , H04L25/0226 , H04L25/03866
摘要： Pilot symbols transmitted from different sectors of a same base station are multiplied with a same cell specific scrambling code and a first code having low cross correlation and second codes having low cross correlation. The second code is constant over the length of the first code, but may vary for repetitions of the first code.
摘要翻译：从相同基站的不同扇区发送的导频符号与相同的小区专用扰码和具有低互相关的第一码和具有低互相关的第二码相乘。第二个代码在第一个代码的长度上是恒定的，但是对于第一个代码的重复可能会有所不同。

4. 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。

5. 发明申请

WO2007051055A2 A METHOD AND APPARATUS FOR MODULATING DEDICATED PILOT CHANNEL IN BLOCK HOPPING MODE IN WIRELESS COMMUNICATION SYSTEMS 审中-公开
标题翻译：一种用于在无线通信系统中调制块模式中的专用导频信道的方法和装置
公开(公告)号：WO2007051055A2
公开(公告)日：2007-05-03
申请号：PCT/US2006/042489
申请日：2006-10-27
申请人： QUALCOMM Incorporated , KHANDEKAR, Aamod , GOROKHOV, Alexei , GORE, Dhananjay Ashok
发明人： KHANDEKAR, Aamod , GOROKHOV, Alexei , GORE, Dhananjay Ashok
IPC分类号： H04L27/26 , H04B1/713
CPC分类号： H04L5/0041 , H03M13/2725 , H03M13/276 , H03M13/2789 , H03M13/2957 , H04B1/7143 , H04J13/00 , H04L1/0003 , H04L1/0026 , H04L1/0625 , H04L5/0007 , H04L5/0026 , H04L5/005 , H04L25/0228 , H04L27/2602 , H04W52/54
摘要： A method and apparatus for modulating F-DPICH in BlockHopping mode in a wireless communication system is provided, comprising determining the number of tile-antennas using which F-DPICH is transmitted, modulating at least one tile with a format based upon the number of tile antennas and transmitting the at least one tile over F-DPICH from the tile antennas.
摘要翻译：提供了一种用于在无线通信系统中以BlockHopping模式调制F-DPICH的方法和装置，包括确定使用哪个F-DPICH发送的瓦片天线的数量，基于瓦片的数量来调整至少一个瓦片的格式天线，并通过F-DPICH从瓦片天线发送至少一个瓦片。

6. 发明申请

WO2007050750A1 A METHOD AND APPARATUS FOR MODULATING COMMON PILOT SIGNALS IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：用于调制无线通信系统中的通用导频信号的方法和装置
公开(公告)号：WO2007050750A1
公开(公告)日：2007-05-03
申请号：PCT/US2006/041774
申请日：2006-10-27
申请人： QUALCOMM Incorporated , KHANDEKAR, Aamod , GOROKHOV, Alexei , GORE, Dhananjay Ashok , PALANKI, Ravi
发明人： KHANDEKAR, Aamod , GOROKHOV, Alexei , GORE, Dhananjay Ashok , PALANKI, Ravi
IPC分类号： H04L27/26
CPC分类号： H04L5/0041 , H03M13/2725 , H03M13/276 , H03M13/2789 , H03M13/2957 , H04B1/7143 , H04J13/00 , H04L1/0003 , H04L1/0026 , H04L1/0625 , H04L5/0007 , H04L5/0026 , H04L5/005 , H04L25/0228 , H04L27/2602 , H04W52/54
摘要： A method and apparatus for modulating F-CPICH in a wireless communication system is provided, comprising assigning a sub-carrier, which is a usable carrier and is not allocated to ReservedFLBandwidth segment, and which satisfies one of (i) j is even and isc mod Dp equals to Offsetp mod Dp, or (ii) j is odd and isc mod Dp equals (Offsetp + Dp/2) mod Dp, where j is an index of OFDM symbol within a superframe, isc is an index of the sub-carrier and Dp is the spacing between neighboring pilot sub-carriers, to the F-CPICH, modulating each sub-carrier occupied by F-CPICH with a complex value (?P, 0) where P is the ratio of the power spectral density of the F-CPICH to a power spectral density of a second Orthogonal Frequency Division Multiplexing (OFDM) symbol in a Forward Acquisition Channel (F-ACQCH) and transmitting F-CPICH sub-carrier using an antenna.
摘要翻译：提供一种用于在无线通信系统中调制F-CPICH的方法和装置，包括分配作为可用载波并且未分配给ReservedFLBandwidth段的子载波，并且满足（i）j中的一个是偶数，并且isc mod Dp等于Offsetp mod Dp，或（ii）j是奇数，isc mod Dp等于（Offsetp + Dp / 2）mod Dp，其中j是超帧内的OFDM符号的索引，isc是子帧的索引，载波和Dp是相邻导频子载波之间的间隔，对于F-CPICH，以复数值（ΔP，0）调制由F-CPICH占据的每个子载波，其中P是功率谱密度将F-CPICH转换为前向采集信道（F-ACQCH）中的第二正交频分复用（OFDM）符号的功率谱密度，并使用天线发射F-CPICH子载波。

7. 发明申请

WO2006010159A1 ITERATIVE CHANNEL AND INTERFERENCE ESTIMATION WITH DEDICATED PILOT TONES FOR OFDMA 审中-公开
标题翻译：用于OFDMA的专用通道和干扰估计
公开(公告)号：WO2006010159A1
公开(公告)日：2006-01-26
申请号：PCT/US2005/025609
申请日：2005-07-18
申请人： QUALCOMM INCORPORATED , GOROKHOV, Alexei , AGRAWAL, Avneesh , GORE, Dhananjay Ashok
发明人： GOROKHOV, Alexei , AGRAWAL, Avneesh , GORE, Dhananjay Ashok
IPC分类号： H04L25/02
CPC分类号： H04L25/0236 , H04L5/0007 , H04L5/0048 , H04L5/023 , H04L25/0248 , H04L27/2647
摘要： Estimation of channel characteristics and interference level in a time-varying multi-carrier multi-user systems is carried out concurrently. To perform the estimation, a multitude of data symbols and dedicated pilot symbols are transmitted over the channel. Next, an initial estimate value is selected for the interference level. The initial estimate value for the interference level is used together with the received pilot symbols to provide a first estimate of the channel. The first estimate of the channel is used to determine a new updated value for the interference level, which in turn, is used to update the value of the first estimate of the channel iteratively. The iterations continue until the iteratively updated values of the interference level and channel satisfy predefined limits. The data symbols and the final updated value of the channel are subsequently used to proviEstimation of channel characteristics and interference level in a time-varying multi-carrier multi-user systems is carried out concurrently. To perform the estimation, a multitude of data symbols and dedicated pilot symbols are transmitted over the channel. Next, an initial estimate value is selected for the interference level. The initial estimate value for the interference level is used together with the received pilot symbols to provide a first estimate of the channel. The first estimate of the channel is used to determine a new updated value for the interference level, which in turn, is used to update the value of the first estimate of the channel iteratively. The iterations continue until the iteratively updated values of the interference level and channel satisfy predefined limits. The data symbols and the final updated value of the channel are subsequently used to provide a second estimate for the channel. A MMSE approach is followed where channel estimates and noise variance in an OFDM system are iteratively updted.
摘要翻译：并行执行时变多载波多用户系统中的信道特性和干扰电平的估计。为了执行估计，通过信道发送多个数据符号和专用导频符号。接下来，针对干扰电平选择初始估计值。干扰电平的初始估计值与接收到的导频符号一起使用以提供信道的第一估计。信道的第一估计用于确定用于干扰电平的新的更新值，其又用于迭代地更新信道的第一估计值。迭代继续，直到干扰电平和通道的迭代更新值满足预定义的限制。数据符号和信道的最终更新值随后用于提供信道特性，同时执行时变多载波多用户系统中的干扰电平。为了执行估计，通过信道发送多个数据符号和专用导频符号。接下来，针对干扰电平选择初始估计值。干扰电平的初始估计值与接收到的导频符号一起使用以提供信道的第一估计。信道的第一估计用于确定用于干扰电平的新的更新值，其又用于迭代地更新信道的第一估计值。迭代继续，直到干扰电平和通道的迭代更新值满足预定义的限制。随后使用数据符号和信道的最终更新值来提供信道的第二估计。遵循MMSE方法，其中OFDM系统中的信道估计和噪声方差被迭代地更新。

8. 发明申请

WO2006124810A2 PILOT TRANSMISSION AND CHANNEL ESTIMATION WITH PILOT WEIGHTING 审中-公开
标题翻译：飞行员称重的飞行传输和通道估计
公开(公告)号：WO2006124810A2
公开(公告)日：2006-11-23
申请号：PCT/US2006/018789
申请日：2006-05-16
申请人： QUALCOMM INCORPORATED , GORE, Dhananjay Ashok , AGRAWAL, Avneesh
发明人： GORE, Dhananjay Ashok , AGRAWAL, Avneesh
IPC分类号： H04J11/00
CPC分类号： H04B1/69 , H04L5/0007 , H04L5/0048 , H04L25/0226 , H04L25/0232 , H04L27/2647
摘要： Techniques to perform channel estimation with pilot weighting are described. A receiver receives at least one transmission symbol for a pilot transmitted by a transmitter. Each transmission symbol may be generated with a single-carrier multiplexing scheme (e.g., IFDMA or LFDMA) or a multi-carrier multiplexing scheme (e.g., OFDMA). The receiver processes each received transmission symbol and obtains received pilot values. The receiver may derive an interference estimate based on the received pilot values and may estimate the reliability of the received pilot values based on the interference estimate. The receiver determines weights for the received pilot values based on the transmitted pilot values, the estimated reliability of the received pilot values, and/or other information. The receiver derives a channel estimate based on the received pilot values and the weights. The receiver then performs data detection (e.g., equalization) on received data values with the channel estimate.
摘要翻译：描述了使用导频加权来执行信道估计的技术。接收机接收由发射机发送的导频的至少一个传输符号。可以使用单载波复用方案（例如，IFDMA或LFDMA）或多载波复用方案（例如，OFDMA）生成每个传输符号。接收机处理每个接收的传输符号并获得接收到的导频值。接收机可以基于接收到的导频值导出干扰估计，并且可以基于干扰估计来估计接收到的导频值的可靠性。接收机基于发送的导频值，接收到的导频值的估计可靠性和/或其他信息来确定接收到的导频值的权重。接收器根据接收到的导频值和权重导出信道估计。然后，接收机对具有信道估计的接收数据值执行数据检测（例如，均衡）。

9. 发明申请

WO2007014175A1 SDMA FOR WCDMA WITH INCREASED CAPACITY BY USE OF MULTIPLE SCRAMBLING CODES 审中-公开
标题翻译：通过使用多个SCRAMBLING代码提高容量的WCDMA的SDMA
公开(公告)号：WO2007014175A1
公开(公告)日：2007-02-01
申请号：PCT/US2006/028730
申请日：2006-07-24
申请人： QUALCOMM INCORPORATED , SAMBHWANI, Sharad Deepak , GORE, Dhananjay Ashok , AGRAWAL, Avneesh , SUTIVONG, Arak , GOROKHOV, Alexei
发明人： SAMBHWANI, Sharad Deepak , GORE, Dhananjay Ashok , AGRAWAL, Avneesh , SUTIVONG, Arak , GOROKHOV, Alexei
IPC分类号： H04J13/00 , H04J11/00
CPC分类号： H04J13/0048 , H04J13/18
摘要： Systems and methodologies are described that facilitate increasing system capacity in a code-limited WCDMA (e.g., TDD, FDD, …) wireless communication environment. According to one aspect, a larger code space can be defined by introducing multiple code clusters within a sector, wherein each cluster has a unique scrambling code. Codes within a cluster can have orthogonal Walsh sequences that can be assigned to user devices to facilitate communicating over a wireless network and can overlap with codes in another cluster. The unique scrambling code assigned to each cluster can ensure that duplicate Walsh sequences in another cluster in the same sector appear as a pseudo-noise codes.
摘要翻译：描述了有助于在限制码的WCDMA（例如，TDD，FDD））无线通信环境中增加系统容量的系统和方法。根据一个方面，可以通过在扇区内引入多个码集来定义更大的码空间，其中每个群集具有唯一的扰码。群集内的代码可以具有可被分配给用户设备的正交沃尔什序列，以便于通过无线网络进行通信并且可以与另一个群集中的代码重叠。分配给每个簇的唯一扰码可以确保同一扇区中另一个簇中的重复沃尔什序列显示为伪噪声码。

10. 发明申请

WO2007050913A2 A METHOD AND APPARATUS FOR DETERMINING TIMINGS FOR TRANSMISSION IN WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：一种用于确定无线通信系统中传输时间的方法和装置
公开(公告)号：WO2007050913A2
公开(公告)日：2007-05-03
申请号：PCT/US2006/042029
申请日：2006-10-27
申请人： QUALCOMM Incorporated , KHANDEKAR, Aamod , GORE, Dhananjay Ashok
发明人： KHANDEKAR, Aamod , GORE, Dhananjay Ashok
IPC分类号： H04B7/26
CPC分类号： H04L5/0041 , H03M13/2725 , H03M13/276 , H03M13/2789 , H03M13/2957 , H04B1/7143 , H04J13/00 , H04L1/0003 , H04L1/0026 , H04L1/0625 , H04L5/0007 , H04L5/0026 , H04L5/005 , H04L25/0228 , H04L27/2602 , H04W52/54

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