公开(公告)号：US20120051454A1

公开(公告)日：2012-03-01

申请号：US13217830

申请日：2011-08-25

Applicant: Jun Zheng ,  Min Chuin Hoo ,  Vinko Erceg

Inventor： Jun Zheng ,  Min Chuin Hoo ,  Vinko Erceg

IPC: H04L27/00

CPC classification number: H04L27/227 ,  H04B7/084 ,  H04L5/0026 ,  H04L5/0048 ,  H04L25/03866 ,  H04L27/20 ,  H04L27/2613 ,  H04L27/2621

Abstract: Phase rotation for preambles within multiple user, multiple access, and/or MIMO wireless communications. An appropriately designed phase rotation vector and/or appropriately designed cyclic shift delays (CSDs) are applied to respective sub-band components of the preamble. With appropriately designed CSDs, certain fields within the preamble are not modified. For example, a legacy short training field (L-STF) of the preamble is not changed when using appropriately designed CSDs. The respective CSDs may be implemented as integer multiples of a common CSD (e.g., 0×CSD, 1×CSD, 2×CSD, etc. such that one of the values of such a CSD vector may be zero [0], another may be the common CSD itself, etc.). Also, by employing an appropriately designed phase rotation vector and integer multiples of a CSD to a preamble, the respective peak to average power ratio (PAPR) between different respective fields within the preamble may be minimized.

Abstract translation: 在多用户，多路访问和/或MIMO无线通信中的前导码的相位旋转。 将适当设计的相位旋转矢量和/或适当设计的循环移位延迟（CSD）应用于前导码的各个子带分量。 通过适当设计的CSD，前导码中的某些字段不会被修改。 例如，使用适当设计的CSD时，前导码的传统短训练字段（L-STF）不会改变。 相应的CSD可以实现为公共CSD的整数倍（例如，0×CSD，1×CSD，2×CSD等，使得这样的CSD向量的值之一可以为零[0]，另一个可以 成为常见的CSD本身等）。 此外，通过将适当设计的相位旋转向量和CSD的整数倍应用于前同步码，可以使前导码内的不同相应场之间的相应峰均功率比（PAPR）最小化。

公开(公告)号：US07738604B2

公开(公告)日：2010-06-15

申请号：US11406667

申请日：2006-04-19

Applicant: R. Tushar Moorti ,  Min Chuin Hoo

Inventor： R. Tushar Moorti ,  Min Chuin Hoo

IPC: H04L27/06

CPC classification number: H04L27/0012 ,  H04B1/005 ,  H04B1/406 ,  H04L7/041

Abstract: Discriminating a modulation type based upon a predetermined portion of symbols for a received encoded signal. While receiving the encoded signal, at least a first and a second cumulative soft metrics are generated using the plurality of symbols over a predetermined portion of the received encoded signal. The first cumulative soft metric is compared with the second cumulative soft metric to generate or provide a discriminated modulation type. With the discriminated modulation type, the signal field is decoded, allowing for decoding of the accompanying data payload with the encoded signal.

Abstract translation: 基于接收到的编码信号的符号的预定部分来区分调制类型。 在接收编码信号的同时，在所接收的编码信号的预定部分上使用多个符号生成至少第一和第二累积软度量。 将第一累积软度量与第二累积软度量相比较以产生或提供鉴别调制类型。 利用鉴别调制类型，信号字段被解码，允许用编码信号解码伴随的数据有效载荷。

公开(公告)号：US07729378B2

公开(公告)日：2010-06-01

申请号：US11504905

申请日：2006-08-16

Applicant: Min Chuin Hoo ,  Rajendra Tushar Moorti ,  Jason A. Trachewsky

Inventor： Min Chuin Hoo ,  Rajendra Tushar Moorti ,  Jason A. Trachewsky

IPC: H04J3/16

CPC classification number: H04W99/00 ,  H04L1/0005 ,  H04L1/0007 ,  H04L1/0019 ,  H04L1/0039 ,  H04L1/06 ,  H04W84/12

Abstract: A transceiver device for processing a frame in a wireless local area network, where the frame is one of several frame formats, which include a high throughput frame format. The transceiver device receives a frame having a training sequence, a signal field and a data payload, and processes the training sequence to detect which signal field length of a plurality of signal field lengths was used in the received frame. With the signal field length, the device processes the signal field based upon the detected signal field length to retrieve the data payload processing information.

Abstract translation: 一种用于处理无线局域网中的帧的收发器设备，其中帧是包括高吞吐量帧格式的几种帧格式之一。 收发器装置接收具有训练序列，信号字段和数据有效载荷的帧，并且处理训练序列以检测在接收帧中使用多个信号字段长度的信号字段长度。 利用信号字段长度，设备基于检测到的信号字段长度处理信号字段以检索数据有效载荷处理信息。

公开(公告)号：US07680455B2

公开(公告)日：2010-03-16

申请号：US10810186

申请日：2004-03-26

Applicant: Rajendra Tushar Moorti ,  Min Chuin Hoo ,  Jason Alexander Trachewsky

Inventor： Rajendra Tushar Moorti ,  Min Chuin Hoo ,  Jason Alexander Trachewsky

IPC: H04B15/00 ,  H04B1/00 ,  H04B1/10

CPC classification number: H04B17/0042 ,  H01Q1/1257 ,  H04B1/1027 ,  H04B7/0805 ,  H04B17/309

Abstract: Methods and systems for choosing at least one signal path are disclosed. Aspects of the method may include determining a signal quality metric for each of a plurality of signal paths, modifying the signal quality metric for each of the plurality of signal paths, and selecting at least one signal path based on at least one modified signal quality metric. At least one of the signal paths may be cycled through and the signal quality metric may be biased and/or increased and/or decreased for each of the plurality of signal paths by a fixed amount and/or by a predetermined amount. The signal quality metric may also be dynamically changed for each of the plurality of signal paths.

Abstract translation: 公开了用于选择至少一个信号路径的方法和系统。 方法的方面可以包括确定多个信号路径中的每一个的信号质量度量，修改多个信号路径中的每一个的信号质量度量，以及基于至少一个修改的信号质量度量来选择至少一个信号路径 。 信号路径中的至少一个可以循环通过，并且信号质量度量可以针对多个信号路径中的每一个以固定量和/或预定量被偏置和/或增加和/或减小。 信号质量度量也可以针对多个信号路径中的每一个动态地改变。

公开(公告)号：US07558554B2

公开(公告)日：2009-07-07

申请号：US10810433

申请日：2004-03-26

Applicant: Min Chuin Hoo ,  Rajendra Tushar Moorti

Inventor： Min Chuin Hoo ,  Rajendra Tushar Moorti

IPC: H04B1/06

CPC classification number: H04B7/0814 ,  H04B7/0608

Abstract: Certain embodiments of the invention may be found in a method and system for antenna selection diversity with prediction. An antenna diversity system may use information that it has stored on the antenna selection process in previous frames to predict the starting receiving antenna and the starting transmission antenna for the next frame. The prediction may be based on which antennas were selected in previous frames or may be based metrics associated with performance of the antennas. Prediction may be based on a majority polling scheme of previously selected antennas in a determined number of previous frames. Prediction may also be based on a weighted sum of at least one selection metric for all antennas in a determined number of previous frames. Antenna prediction provides a significant performance improvement by reducing the processing and operational overhead in cases where a transmit or a receive antenna dominates.

Abstract translation: 可以在用于具有预测的天线选择分集的方法和系统中找到本发明的某些实施例。 天线分集系统可以使用其在先前帧中的天线选择过程上存储的信息来预测起始接收天线和下一帧的起始发射天线。 预测可以基于在先前帧中选择哪些天线或者可以是与天线的性能相关联的基于度量的度量。 预测可以基于在确定数量的先前帧中的先前选择的天线的多数轮询方案。 预测还可以基于确定数量的先前帧中的所有天线的至少一个选择度量的加权和。 天线预测通过在发射或接收天线占主导地位的情况下减少处理和操作开销来提供显着的性能改进。