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1. 发明申请

WO2004079969A3 CHANNEL ESTIMATION BASED ON AN ESTIMATED CHANNEL DELAY SPREAD 审中-公开
标题翻译：基于估计的通道延迟传播的信道估计
公开(公告)号：WO2004079969A3
公开(公告)日：2005-02-10
申请号：PCT/US2004003152
申请日：2004-02-04
申请人： INTEL CORP , MALTSEV ALEXANDER , PUDEYEV ANDREY , SADRI ALI
发明人： MALTSEV ALEXANDER , PUDEYEV ANDREY , SADRI ALI
IPC分类号： H04L25/02 , H04L27/26
CPC分类号： H04L25/0216 , H04L25/0218 , H04L25/022 , H04L25/0226 , H04L25/025 , H04L27/2647
摘要： In accordance with one embodiment of the invention, a channel estimator (200) may be adapted to provide a channel estimate based at least in part on an estimated delay spread (232). The channel estimator may be adapted to provide a more accurate channel estimation in the event of a lower estimated delay spread. In one embodiment, the channel estimator provides a frequency domain channel estimate (236), and in another embodiment the channel estimator provides a time domain channel estimate (316).
摘要翻译：根据本发明的一个实施例，信道估计器（200）可以适于至少部分地基于估计的延迟扩展（232）来提供信道估计。信道估计器可以适于在估计延迟扩展较低的情况下提供更准确的信道估计。在一个实施例中，信道估计器提供频域信道估计（236），并且在另一个实施例中，信道估计器提供时域信道估计（316）。

2. 发明申请

WO2005029804A2 CHANNEL ESTIMATION FEEDBACK IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM OR THE LIKE 审中-公开
标题翻译：正交频分复用系统或类似信道估计反馈
公开(公告)号：WO2005029804A2
公开(公告)日：2005-03-31
申请号：PCT/US2004030385
申请日：2004-09-15
申请人： INTEL CORP
发明人： SADRI ALI , MALTSEV ALEXANDER , CHEREPENNIKOV VALERY
IPC分类号： H04B7/06 , H04L25/02 , H04L27/26
CPC分类号： H04B7/0626 , H04B7/0636 , H04L25/0202 , H04L27/2601
摘要： Briefly, in accordance with one embodiment of the invention, a channel state information packet is encoded by a receiver side device and is fed back to the transmitter side device. The transmitter side device decodes the channel state information packet to extract an estimate of the channel response function.
摘要翻译：简言之，根据本发明的一个实施例，信道状态信息分组由接收机侧设备编码并被反馈给发射机侧设备。发射机侧设备解码信道状态信息分组以提取信道响应函数的估计。

3. 发明申请

WO2005022681A3 MULTICARRIER MIMO TRANSMISSION 审中-公开
标题翻译： MULTICARRIER MIMO传输
公开(公告)号：WO2005022681A3
公开(公告)日：2005-07-21
申请号：PCT/US2004025509
申请日：2004-08-06
申请人： INTEL CORP
发明人： SADOWSKY JOHN , HO MINNIE , SANDHU SUMEET , MALTSEV ALEXANDER , JACOBSEN ERIC , SADRI ALI
IPC分类号： H04B7/04 , H04L1/06 , H04L27/26 , H04W16/28 , H04W74/02
CPC分类号： H04W16/28 , H04B7/0408 , H04L27/2602 , H04W74/02
摘要： In an orthogonal frequency division multiplexed (OFDM) system, a transmitter and/or receiver communicate separate data streams on non-orthogonal spatial channels., Each spatial channel may use the same set of OFDM subcarriers and may take advantage of the multipath characteristics of the spatial channel allowing the communication of additional data without an increase in frequency bandwidth. Space-frequency subcarrier modulation assignments may be dynamically assigned on a per subcarrier basis as well as a per spatial channel basis to help maximize the data-carrying capacity of the channel. In some embodiments, each of the spatial channels may be associated with one of a plurality of spatially diverse antennas. In other embodiments, beamforming may be performed to allow the transmission and/or reception of signals within the spatial channels.
摘要翻译：在正交频分复用（OFDM）系统中，发射机和/或接收机在非正交空间信道上传送单独的数据流，每个空间信道可以使用相同的OFDM子载波集合，并且可以利用空间信道允许附加数据的通信，而不增加频率带宽。可以在每个子载波基础上以及每个空间信道基础上动态分配空频子载波调制分配，以帮助最大化信道的数据承载能力。在一些实施例中，每个空间信道可以与多个空间多样的天线中的一个相关联。在其他实施例中，可以执行波束成形以允许空间信道内的信号的发送和/或接收。

4. 发明申请

WO2005067246A3 QUASI-PARALLEL MULTICHANNEL RECEIVERS FOR WIDEBAND ORTHOGONAL FREQUENCY DIVISION MULTIPLEXED COMMUNICATIONS AND ASSOCIATED METHODS 审中-公开
标题翻译：宽带正交频分复用通信的准平行多信道接收机及相关方法
公开(公告)号：WO2005067246A3
公开(公告)日：2005-11-10
申请号：PCT/US2004043042
申请日：2004-12-20
申请人： INTEL CORP , MALTSEV ALEXANDER , SADRI ALI , SERGEYEV SERGEY , BELONOZHKIN ALEXANDER , SERGEYEV VADIM
发明人： MALTSEV ALEXANDER , SADRI ALI , SERGEYEV SERGEY , BELONOZHKIN ALEXANDER , SERGEYEV VADIM
IPC分类号： H04B1/40 , H04L27/26
CPC分类号： H04L27/2649 , H04B1/005 , H04B1/0057 , H04B1/16 , H04B1/406 , H04B7/0413 , H04L27/2608 , H04L27/2653
摘要： A quasi-parallel receiver may simultaneously receive signals within several subchannels that comprise a wideband channel. The receiver includes a subchannel filter selection switch that provides a baseband signal to a selected one of a plurality of subchannel low-pass filters. A heterodyne frequency generator provides one of a plurality of heterodyne frequencies to convert an RF signal received within a selected subchannel to the baseband signal. The subchannel low-pass filters accumulate signal information from an associated one of a plurality of subchannels during a filter-input sampling interval. In some embodiments, individual analog-to-digital converters receive the accumulated signal outputs from an associated subchannel filter and generate digital signals for a subsequent Fourier transformation. In some embodiments, a normalized signal output may be provided to the analog-to-digital converters, allowing the use of lower resolution analog-to-digital converters. The analog-to-digital converters may have sampling rates based on the subchannel bandwidth.
摘要翻译：准并行接收机可以同时接收包括宽带信道的几个子信道内的信号。接收器包括子信道滤波器选择开关，其向多个子信道低通滤波器中选定的一个提供基带信号。外差频率发生器提供多个外差频率中的一个以将在选择的子信道内接收的RF信号转换为基带信号。子信道低通滤波器在滤波器输入采样间隔期间累积来自多个子信道中相关的一个子信道的信号信息。在一些实施例中，各个模数转换器从相关联的子信道滤波器接收累加的信号输出并且生成用于随后的傅立叶变换的数字信号。在一些实施例中，归一化信号输出可以被提供给模数转换器，从而允许使用较低分辨率的模数转换器。模数转换器可以具有基于子信道带宽的采样率。

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