公开(公告)号：EP2197196A1

公开(公告)日：2010-06-16

申请号：EP10155807.0

申请日：2004-10-22

申请人： QUALCOMM Incorporated

发明人： Chari, Murali Ramaswamy ,  Walker, Gordon Kent ,  Vijayan, Rajiv

IPC分类号： H04N5/04

CPC分类号： H04N5/4401 ,  H04N5/50 ,  H04N21/41407 ,  H04N21/4345 ,  H04N21/4384 ,  H04N21/44222

摘要： Video portion and audio portion are designated to be played together but are transmitted by the base station at different times: video portion is transmitted early with respect to audio portion by a delay difference.

摘要翻译： 的视频和音频部分的部分被指定以播放在一起，但为反式在不同的时间由基站mitted：视频部分是反式mitted早期与由延迟差相对于音频部分。

公开(公告)号：EP2194709A1

公开(公告)日：2010-06-09

申请号：EP10155810.4

申请日：2004-10-22

申请人： QUALCOMM Incorporated

发明人： Chari, Murali Ramaswamy ,  Walker, Gordon Kent ,  Vijayan, Rajiv

IPC分类号： H04N5/60 ,  H04N5/44

CPC分类号： H04N5/4401 ,  H04N5/50 ,  H04N21/41407 ,  H04N21/4345 ,  H04N21/4384 ,  H04N21/44222

摘要： The resources of a wireless device are configured to receive different portions for different multimedia programs, for example by concurrently decoding and decompressing the audio portion of one program and the video portion of another program.

摘要翻译： 一无线设备的资源被配置为通过解码同时和解压一个节目的音频部分和另一节目的视频部分来接收对不同的多媒体程序的不同部分，例如。

公开(公告)号：EP2190190A1

公开(公告)日：2010-05-26

申请号：EP10155805.4

申请日：2004-10-22

申请人： QUALCOMM Incorporated

发明人： Vijayan, Rajiv ,  Chari, Murali Ramaswamy ,  Walker, Gordon Kent

IPC分类号： H04N5/50 ,  H04N5/44

CPC分类号： H04N5/4401 ,  H04N5/50 ,  H04N21/41407 ,  H04N21/4345 ,  H04N21/4384 ,  H04N21/44222

摘要： Techniques to seamlessly switch reception between multimedia programs are described. For 'continued decoding', a wireless device continues to receive, decode, decompress, and (optionally) display a current program, even after a new program has been selected, until overhead information needed to decode the new program is received. After receiving the overhead information, the wireless device decodes the new program but continues to decompress the current program. The wireless device decompresses the new program after decoding this program. For 'carly decoding', the wireless device receives a user input and identifies a program with potential for user selection. The identified program may be the one highlighted by the user input or a program anticipated to be selected based on the user input. The wireless device initiates decoding of the identified program, prior to its selection, so that the program can be decompressed and displayed earlier if it is subsequently selected.

摘要翻译： 之间的多媒体程序被描述的技术以无缝切换接收。 关于“继续解码”，无线设备继续接收，解码，解压缩，和（可选地）显示当前节目，一个新的节目已经被选择后，也直到需要解码该新的节目被接收的开销信息。 接收所述开销信息之后，无线设备解码该新的节目，但继续解压缩当前程序。 所述无线装置解压此节目进行解码之后的新的程序。 关于“卡莉解码”，无线设备接收的用户输入和识别的程序与用于用户选择电位。 所识别的程序可以是一个由用户输入的或预期基于用户输入而被选择的节目突出显示。 所述无线设备发起所识别节目的解码，其选择之前，所以也可以将程序解压缩和显示如果随后选择较早。

公开(公告)号：EP2066088A1

公开(公告)日：2009-06-03

申请号：EP09153505.4

申请日：2005-04-25

申请人： Qualcomm Incorporated

发明人： Vijayan, Rajiv ,  Mantravadi, Ashok ,  Mukkavilli, Krishna Kiran

IPC分类号： H04L25/02 ,  H04L27/26

CPC分类号： H04L25/022 ,  H04L5/0048 ,  H04L23/02 ,  H04L25/0212 ,  H04L25/0228 ,  H04L27/2662 ,  H04L27/2695

摘要： To allow a receiving entity to derive a longer channel estimate while limiting overhead, a transmitting entity transmits a pilot on different groups of subbands in different time intervals. N subbands in the system are arranged into M nonoverlapping groups. Each group includes subbands that are uniformly distributed across the N subbands. The transmitting entity transmits the pilot on a different subband group in each time interval, and selects all M subband groups in M time intervals based on a pilot staggering pattern. The receiving entity derives (1) an initial impulse response estimate with P channel taps based on the pilot received on one subband group and (2) two longer impulse response estimates with different lengths used for data detection and time tracking.; Each longer impulse response estimate may be derived by filtering initial impulse response estimates for a sufficient number of subband groups using a time-domain filter.

摘要翻译： 为了允许接收实体在限制开销的同时导出更长的信道估计，发送实体以不同的时间间隔在不同的子带组上发送导频。 系统中的N个子带被排列成M个非重叠组。 每组包括均匀分布在N个子带上的子带。 发送实体在每个时间间隔中在不同的子带组上发送导频，并且基于导频交错模式以M个时间间隔选择所有M个子带组。 接收实体基于在一个子带组上接收的导频导出（1）具有P个信道抽头的初始脉冲响应估计，以及（2）用于数据检测和时间跟踪的两个具有不同长度的较长脉冲响应估计; 可以通过使用时域滤波器对足够数量的子带组的初始脉冲响应估计进行滤波来导出更长的脉冲响应估计。

公开(公告)号：EP2028785A2

公开(公告)日：2009-02-25

申请号：EP08006309.2

申请日：2008-03-31

申请人： Qualcomm Incorporated

发明人： Mukkavilli, Krishna ,  Krishnamoorthi, Raghuraman ,  Vijayan, Rajiv

IPC分类号： H04L5/02 ,  H04L27/26 ,  H04L1/00 ,  H04W48/16 ,  H04W72/12 ,  H04L25/02

CPC分类号： H04L5/0048 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0064 ,  H04L5/0083 ,  H04L25/0226

摘要： A transmitter or receiver device includes a processing system configured to have one or more pilot interlace vectors and one or more distance vectors. The processing system is further configured to generate a first slot interlace for a first slot based on the one or more pilot interlace vectors, and is further configured to generate a second slot interlace for a second slot based on the first slot interlace and the one or more distance vectors. Additional slot interlaces for all other slots may also be generated based on the first slot interlace and the one or more distance vectors.

摘要翻译： 发射器或接收器装置包括被配置为具有一个或多个导频交错矢量和一个或多个距离矢量的处理系统。 该处理系统被进一步配置为生成用于基于所述一个或多个导频交错矢量的第一时隙的第一时隙交织，并且进一步被配置为生成用于基于所述第一狭槽交错的第二槽的第二狭槽交错和所述一个或 更距离矢量。 附加槽交错对于所有其它时隙因此可以基于第一时隙交织和所述一个或多个距离向量生成。

公开(公告)号：EP1976211A1

公开(公告)日：2008-10-01

申请号：EP08012660.0

申请日：2005-01-07

申请人： Qualcomm Incorporated

发明人： Vijayan, Rajiv ,  Gupta, Alok Kumar ,  Krishnamoorthi, Raghuraman

IPC分类号： H04L27/26

CPC分类号： H04L27/2656 ,  H04L27/2657 ,  H04L27/2675

摘要： Frequency error estimation and frame synchronization are performed at a receiver in an OFDM system based on a metric that is indicative of detected pilot power. The metric may be defined based on cross-correlation between two received symbols obtained in two OFDM symbol periods. For frequency error estimation, a metric value is computed for each of multiple hypothesized frequency errors. The hypothesized frequency error for the metric value with the largest magnitude is provided as the estimated frequency error. For frame synchronization, a correlation value is obtained for each OFDM symbol period by correlating metric values obtained for NC (e.g., most recent) OFDM symbol periods with NC expected values. The expected values are computed in a manner consistent with the manner in which the metric values are computed. Peak detection is performed on the correlation values obtained for different OFDM symbol periods to determine frame synchronization.

摘要翻译： 基于指示检测到的导频功率的度量，在OFDM系统中的接收机处执行频率误差估计和帧同步。 可以基于在两个OFDM符号周期中获得的两个接收符号之间的互相关来定义度量。 对于频率误差估计，针对多个假设频率误差中的每一个计算度量值。 提供具有最大幅度的度量值的假设频率误差作为估计的频率误差。 对于帧同步，通过将为NC（例如，最近的）OFDM符号周期获得的度量值与NC预期值相关联，为每个OFDM符号周期获得相关值。 以与计算度量值的方式一致的方式计算期望值。 对针对不同的OFDM符号周期获得的相关值执行峰值检测以确定帧同步。

公开(公告)号：EP2378700B1

公开(公告)日：2013-04-10

申请号：EP11174161.7

申请日：2003-10-29

申请人： Qualcomm Incorporated

发明人： Krishnan, Ranganathan ,  Vijayan, Rajiv ,  Kadous, Tamer

IPC分类号： H04L5/00 ,  H04L1/16 ,  H04L1/00 ,  H04L25/02 ,  H04W52/32

CPC分类号： H04W52/325 ,  H04L1/0004 ,  H04L1/1614 ,  H04L5/0007 ,  H04L5/0032 ,  H04L5/0041 ,  H04L5/005 ,  H04L5/0053 ,  H04L25/0212 ,  H04L25/022 ,  H04L25/023 ,  H04L25/03821 ,  H04L27/2607 ,  H04L27/2657 ,  H04L27/2662 ,  H04W52/225 ,  H04W52/346 ,  H04W52/42

公开(公告)号：EP2378682A2

公开(公告)日：2011-10-19

申请号：EP11168263.9

申请日：2004-02-17

申请人： Qualcomm Incorporated

发明人： Vijayan, Rajiv ,  Agrawal, Avneesh ,  Jha, Sanjay K.

IPC分类号： H04J1/00 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04W52/34

CPC分类号： H04W72/0453 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0066 ,  H04L27/2614 ,  H04W52/343 ,  H04W52/367

摘要： Techniques for managing peak-to-average power ratio (PAPR) for multi-carrier modulation in wireless communication systems. Different terminals in a multiple-access system may have different required transmit powers. The number of carriers to allocate to each terminal is made dependent on its required transmit power. Terminals with higher required transmit powers may be allocated fewer carriers (associated with smaller PAPR) to allow the power amplifier to operate at higher power levels. Terminals with lower required transmit powers may be allocated more carriers (associated with higher PAPR) since the power amplifier is operated at lower power levels. The specific carriers to assign to the terminals may also be determined by their transmit power levels to reduce out-of-band emissions. Terminals with higher required transmit powers may be assigned with carriers near the middle of the operating band, and terminals with lower required transmit powers may be assigned with carriers near the band edges.

公开(公告)号：EP2317663A3

公开(公告)日：2011-07-06

申请号：EP10168345.6

申请日：2003-10-14

申请人： Qualcomm Incorporated

发明人： Agrawal, Avneesh ,  Vijayan, Rajiv ,  Kadous, Tamer

IPC分类号： H04B7/00 ,  H04B7/02

CPC分类号： H04L1/0618 ,  H04B7/0417 ,  H04B7/0443 ,  H04B7/0465 ,  H04B7/0615 ,  H04B7/0891 ,  H04W52/34 ,  H04W52/42

摘要： A rate adaptive transmission scheme for MIMO systems, which can transmit a variable number of data symbol streams, provide transmit diversity for each data symbol stream, and fully utilize the total transmit power of the system and the full power of each antenna. In one method, at least one data symbol stream is received for transmission from a plurality of antennas. Each data symbol stream is scaled with a respective weight corresponding to the amount of transmit power allocated to that stream. The scaled data symbol stream(s) are multiplied with a transmit basis matrix to provide a plurality of transmit symbol streams for the plurality of antennas.; The transmit basis matrix (e.g., a Walsh-Hadamard matrix or a DFT matrix) is defined such that each data symbol stream is transmitted from all antennas and each transmit symbol stream is transmitted at (or near) the full power for the associated antenna.

摘要翻译： 可以传输可变数量的数据符号流的MIMO系统的速率自适应传输方案为每个数据符号流提供发射分集，并充分利用系统的总发射功率和每个天线的全功率。 在一种方法中，接收至少一个数据符号流用于从多个天线发射。 每个数据符号流以对应于分配给该流的发射功率的量的相应权重进行缩放。 缩放的数据符号流与发射基矩阵相乘以提供多个天线的多个发射符号流。 定义发射基矩阵（例如，沃尔什 - 哈达玛矩阵或DFT矩阵），使得每个数据符号流从所有天线发送，并且每个发射符号流以相关天线的（或接近）全功率发射。

公开(公告)号：EP2317663A2

公开(公告)日：2011-05-04

申请号：EP10168345.6

申请日：2003-10-14

申请人： Qualcomm Incorporated

发明人： Agrawal, Avneesh ,  Vijayan, Rajiv ,  Kadous, Tamer

IPC分类号： H04B7/00 ,  H04B7/02

CPC分类号： H04L1/0618 ,  H04B7/0417 ,  H04B7/0443 ,  H04B7/0465 ,  H04B7/0615 ,  H04B7/0891 ,  H04W52/34 ,  H04W52/42

摘要： A rate adaptive transmission scheme for MIMO systems, which can transmit a variable number of data symbol streams, provide transmit diversity for each data symbol stream, and fully utilize the total transmit power of the system and the full power of each antenna. In one method, at least one data symbol stream is received for transmission from a plurality of antennas. Each data symbol stream is scaled with a respective weight corresponding to the amount of transmit power allocated to that stream. The scaled data symbol stream(s) are multiplied with a transmit basis matrix to provide a plurality of transmit symbol streams for the plurality of antennas.; The transmit basis matrix (e.g., a Walsh-Hadamard matrix or a DFT matrix) is defined such that each data symbol stream is transmitted from all antennas and each transmit symbol stream is transmitted at (or near) the full power for the associated antenna.

摘要翻译： 可以传输可变数量的数据符号流的MIMO系统的速率自适应传输方案为每个数据符号流提供传输分集，并且充分利用系统的总传输功率和每个天线的全功率。 在一种方法中，从多个天线接收至少一个数据符号流用于传输。 每个数据符号流用对应于分配给该流的发射功率量的相应权重来缩放。 经缩放的数据符号流与发射基础矩阵相乘以提供用于多个天线的多个发射符号流。 发射基矩阵（例如Walsh-Hadamard矩阵或DFT矩阵）被定义为使得每个数据符号流从所有天线发射，并且每个发射符号流以相关天线的全功率（或接近）发射。