公开(公告)号：US20120281552A1

公开(公告)日：2012-11-08

申请号：US13099059

申请日：2011-05-02

申请人： Huaning Niu ,  Yi Hsuan ,  Ayelet Shahar Doron

发明人： Huaning Niu ,  Yi Hsuan ,  Ayelet Shahar Doron

IPC分类号： H04W24/00 ,  H04B17/00

CPC分类号： H04L1/0031 ,  H04B7/0417 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0639 ,  H04B17/336 ,  H04L1/0026 ,  H04L25/0202

摘要： A method for performing measurement by a radio apparatus is presented. In one embodiment, the method includes determining raw measurements (e.g., a channel estimation and a noise variance estimation) of a subband and determining a rank indicator (RI) without requiring a precoding matrix indicator (PMI) search. The method includes calculating, based at least on the raw measurements, a mean instantaneous capacity (MIC) for the subband and determining a channel quality indicator (CQI) and a PMI based at least on the MIC. In one embodiment, the method uses subband-based measurements for performing feedback/measurement.

摘要翻译： 提出了一种通过无线电设备进行测量的方法。 在一个实施例中，该方法包括确定子带的原始测量（例如，信道估计和噪声方差估计）并确定秩指示符（RI），而不需要预编码矩阵指示符（PMI）搜索。 该方法至少基于原始测量来计算子带的平均瞬时容量（MIC）并且至少基于MIC确定信道质量指示符（CQI）和PMI。 在一个实施例中，该方法使用基于子带的测量来执行反馈/测量。

公开(公告)号：US20120040629A1

公开(公告)日：2012-02-16

申请号：US13282459

申请日：2011-10-26

申请人： Qinghua Li ,  Huaning Niu

发明人： Qinghua Li ,  Huaning Niu

IPC分类号： H04B1/02

CPC分类号： H04W72/046 ,  H01Q1/246 ,  H01Q3/30 ,  H04B7/0617 ,  H04B7/0695 ,  H04B7/0857 ,  H04B7/088

摘要： In some embodiments a beamforming method is disclosed. The method can include transmitting a beam having a channel defined by a maximum ration transmission vector (MRT) and receiving a first response from a receiver, where the first response has first information such as parameters related to the transmitted beam. Using the parameters and the initial MRT another directional transmission can be made. A similar process can determine a maximum combining ratio for a receiver. Set up communications between the transmitter and the receiver can be reduced by omitting data from transmission that can be acquired by other means such as from memory or calculations. Additional embodiments are also disclosed.

摘要翻译： 在一些实施例中，公开了一种波束形成方法。 该方法可以包括发送具有由最大比率传输向量（MRT）定义的信道并且从接收机接收第一响应的波束，其中第一响应具有诸如与发射波束相关的参数的第一信息。 使用参数和初始MRT可以进行另一个定向传输。 类似的过程可以确定接收机的最大组合比。 可以通过省略来自传输的数据来减少发射机和接收机之间的通信，这些数据可以通过诸如从存储器或计算之类的其他手段获得。 还公开了另外的实施例。

公开(公告)号：US20110149758A1

公开(公告)日：2011-06-23

申请号：US12646745

申请日：2009-12-23

申请人： Rongzhen Yang ,  Huaning Niu ,  Shi Liu ,  Yang-Seok Choi

发明人： Rongzhen Yang ,  Huaning Niu ,  Shi Liu ,  Yang-Seok Choi

IPC分类号： H04L12/26

CPC分类号： H04W72/08 ,  H04W36/0055 ,  H04W72/0413

摘要： Channel quality indexing and reverse indexing is described. In one example, a quality value for subbands of a radio communications system are measured. An index for each quality measurement is then determined and a combinatorial index is generated to reflect the indices and the selected subbands. The combinatorial index is then sent to a radio station using a radio communications channel.

摘要翻译： 描述了通道质量索引和反向索引。 在一个示例中，测量无线电通信系统的子带的质量值。 然后确定每个质量测量的索引，并且生成组合索引以反映索引和所选择的子带。 然后使用无线电通信信道将组合索引发送到无线电台。

公开(公告)号：US07826436B2

公开(公告)日：2010-11-02

申请号：US11906193

申请日：2007-10-01

申请人： Huaning Niu ,  Chiu Ngo

发明人： Huaning Niu ,  Chiu Ngo

IPC分类号： H04B7/216 ,  H04J3/24 ,  H04L12/28

CPC分类号： H04L1/1867 ,  H03M13/1102 ,  H04L1/0084 ,  H04L1/1819 ,  H04L43/0823

摘要： A method and system for wireless data communication is provided, which involves constructing a data payload containing data, partitioning the data payload into fragments, performing LDPC encoding on each fragment, and transmitting the data payload including encoded fragments over a wireless channel.

摘要翻译： 提供了一种用于无线数据通信的方法和系统，其包括构建包含数据的数据有效载荷，将数据有效载荷分割成片段，对每个片段执行LDPC编码，以及通过无线信道发送包括编码片段的数据有效载荷。

公开(公告)号：US07661037B2

公开(公告)日：2010-02-09

申请号：US11261527

申请日：2005-10-27

申请人： Huaning Niu ,  Chiu Ngo

发明人： Huaning Niu ,  Chiu Ngo

IPC分类号： H03M13/31

CPC分类号： H03M13/1102 ,  H03M13/6356 ,  H03M13/6362

摘要： Improved LDPC code structure and concatenation rules for IEEE 802.11n systems, providing two code sets per rate, one longer codeword and one shorter codeword. The longer codeword length is determined by the system parameters, while the shorter codeword length is ⅓ of the longer codeword length. A LDPC concatenation rule is provided, wherein a maximum of one extra OFDM symbol is added in padding in order to reduce the code set granularity. In order to provide improved code performance, more bits are shortened compared with puncturing, by transmitting the extra OFDM symbol. Further, all the required puncturing and shortening bits are distributed across all codewords. This scheme provides a preferred tradeoff between code complexity and over-the-air efficiency.

摘要翻译： 针对IEEE 802.11n系统的改进的LDPC码结构和级联规则，每速率提供两个码集，一个更长的码字和一个较短的码字。 较长的码字长度由系统参数确定，而较短的码字长度是较长码字长度的1/3。 提供了一种LDPC级联规则，其中在填充中添加最多一个额外的OFDM符号，以便减少代码集粒度。 为了提供改进的代码性能，通过发送额外的OFDM符号，与打孔相比，更多的比特被缩短。 此外，所有所需的打孔和缩短比特分布在所有码字上。 该方案提供了代码复杂度和空中效率之间的首选权衡。

公开(公告)号：US07657244B2

公开(公告)日：2010-02-02

申请号：US11261726

申请日：2005-10-27

申请人： Huaning Niu ,  Chiu Ngo

发明人： Huaning Niu ,  Chiu Ngo

IPC分类号： H04B1/06 ,  H04B7/02 ,  H04L5/04

CPC分类号： H04B7/04 ,  H04B7/0608 ,  H04B7/0805 ,  H04L1/06 ,  H04L27/2601

摘要： An antenna selection technique (transmitter/receiver antenna selection) that reduces the cost of the MIMO system while maintaining high performance. A combined selection algorithm for MIMO-OFDM is provided which offers the best tradeoff between spatial correlation and instantaneous SNR. In one case, antenna selection is based on instant channel information. In another case antenna is based on statistical channel state information. In another case, antenna selection is based on a hybrid of instant channel state information and statistical channel state information.

摘要翻译： 天线选择技术（发射机/接收机天线选择），可以在保持高性能的同时降低MIMO系统的成本。 提供了用于MIMO-OFDM的组合选择算法，其提供空间相关性和瞬时SNR之间的最佳权衡。 在一种情况下，天线选择基于即时信道信息。 在另一种情况下，天线基于统计信道状态信息。 在另一种情况下，天线选择基于即时信道状态信息和统计信道状态信息的混合。

公开(公告)号：US20090046012A1

公开(公告)日：2009-02-19

申请号：US12189749

申请日：2008-08-11

申请人： Huaning Niu ,  Pengfei Xia ,  Chiu Ngo

发明人： Huaning Niu ,  Pengfei Xia ,  Chiu Ngo

IPC分类号： H01Q3/00

CPC分类号： H01Q3/2605 ,  H01Q3/26 ,  H04B7/043 ,  H04B7/0691

摘要： Systems and methods of training antennas for two devices equipped with phased array antennas in a wireless network are disclosed. In one embodiment, the methods include transmitting a plurality of estimation training sequences from a transmit phased array antenna to a receive phased array antenna, wherein a length of at least one of the plurality of training sequences is adapted to a number of antenna elements at one of the transmit and receive phased array antennas. The methods further include transmitting data to the receive phased array antenna via the transmit phased array antenna tuned with a transmit beamforming vector (BV) selected based at least in part on the plurality of estimation training sequences.

摘要翻译： 公开了在无线网络中配备有相控阵天线的两个设备的天线训练的系统和方法。 在一个实施例中，所述方法包括将多个估计训练序列从发射相控阵列天线发送到接收相控阵列天线，其中所述多个训练序列中的至少一个训练序列的长度适合于一个天线元件 的发射和接收相控阵天线。 所述方法还包括经由通过至少部分地基于多个估计训练序列选择的发射波束形成向量（BV）调谐的发射相控阵列天线将数据发射到接收相控阵天线。

公开(公告)号：US20090016359A1

公开(公告)日：2009-01-15

申请号：US11776506

申请日：2007-07-11

申请人： Huaning Niu ,  Pengfei Xia ,  Chiu Ngo

发明人： Huaning Niu ,  Pengfei Xia ,  Chiu Ngo

IPC分类号： H04L12/56

CPC分类号： H04L27/34 ,  G09G2370/16 ,  H04L1/0065 ,  H04N21/43637

摘要： A system and method for processing high definition video data to be transmitted over a wireless medium is disclosed. In one embodiment, the system includes i) at least one convolutional encoder configured to input a plurality of video data streams and output a plurality of encoded data streams, each of the plurality of encoded data streams comprises a plurality of data bits, ii) at least one multiplexer configured to multiplex the plurality of encoded data streams into a multiplexed data stream based on a multiplexing order, wherein the multiplexing order represents the number of data bits multiplexed together at one time and iii) a quadrature amplitude modulation (QAM) mapper configured to perform QAM mapping for the multiplexed data stream. At least one embodiment provides a simple, yet effective, solution using an s-group multiplexing instead of bit-by-bit multiplexing.

摘要翻译： 公开了一种用于处理通过无线介质发送的高分辨率视频数据的系统和方法。 在一个实施例中，该系统包括i）至少一个卷积编码器，其被配置为输入多个视频数据流并输出多个编码数据流，所述多个编码数据流中的每一个包括多个数据位，ii） 至少一个多路复用器，被配置为基于多路复用顺序将多个编码数据流多路复用为多路复用数据流，其中复用顺序表示一次复用在一起的数据比特数，以及iii）正交幅度调制（QAM）映射器配置 以执行复用数据流的QAM映射。 至少一个实施例提供了使用s组多路复用而不是逐位复用的简单而有效的解决方案。

公开(公告)号：US20080232485A1

公开(公告)日：2008-09-25

申请号：US11726261

申请日：2007-03-21

申请人： Huaning Niu ,  Chiu Ngo

发明人： Huaning Niu ,  Chiu Ngo

IPC分类号： H04K1/10

CPC分类号： H04L1/0656 ,  H04B7/0417 ,  H04B7/0439 ,  H04B7/0443 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0048 ,  H04L1/0631 ,  H04L5/0023

摘要： A power-loading process for wireless communications is provided. The power-loading process includes parsing data into multiple spatial data streams, beam-steering the spatial data streams and a preamble with both a power loading level and channel eigenvalues, for transmission over a plurality of transmission antennas at a wireless transmitter. The process further includes receiving the transmission streams via receive antennas at a wireless receiver and estimating each equivalent channel based on the received preamble to obtain the CSI. The obtained CSI includes the transmitter power loading information for the receiver. The receiver utilizes the power loading information in the obtained CSI, eliminating the need for the detecting power loading from pilot tones at the receiver.

摘要翻译： 提供了一种用于无线通信的功率加载过程。 功率加载过程包括将数据解析成多个空间数据流，对空间数据流进行波束导向和具有功率负载水平和信道特征值的前同步码，用于在无线发射机上的多个发射天线上传输。 该过程进一步包括经由无线接收器处的接收天线接收传输流，并且基于所接收的前导码估计每个等效信道以获得CSI。 所获得的CSI包括用于接收机的发射机功率负载信息。 接收机利用所获得的CSI中的功率负载信息，消除了在接收机处从导频音调检测功率负载的需要。

公开(公告)号：US20080056393A1

公开(公告)日：2008-03-06

申请号：US11735405

申请日：2007-04-13

申请人： Huaning Niu ,  Pengfei Xia ,  Chiu Ngo

发明人： Huaning Niu ,  Pengfei Xia ,  Chiu Ngo

IPC分类号： H04K1/10

CPC分类号： H04L27/2613 ,  H04N21/2383 ,  H04N21/43637 ,  H04N21/4382

摘要： A method and system for transmitting uncompressed video information from a sender to a receiver over a wireless channel is described. Uncompressed video information bits are provided at the sender and the video information bits are packetized into one or more packets. A preamble to precede the data in each packet is provided, where the preamble includes a set of short training sequences and a set of long training sequences. Multiple packets are transmitted from the sender to the receiver over a wireless channel. In certain embodiments, the set of short training sequences includes seven short training sequences and the set of long training sequences includes two long training sequences, and the total length of the preamble is five orthogonal frequency-division multiplexing (OFDM) symbols long.

摘要翻译： 描述了一种通过无线信道将未压缩视频信息从发送方发送到接收机的方法和系统。 未压缩的视频信息位在发送器处被提供，并且视频信息比特被分组成一个或多个分组。 提供了在每个分组中的数据之前的前导码，其中前导码包括一组短训练序列和一组长训练序列。 多个分组通过无线信道从发送者发送到接收者。 在某些实施例中，短训练序列集合包括七个短训练序列，并且该长训练序列组包括两个长训练序列，并且前导码的总长度为五个正交频分复用（OFDM）符号。