公开(公告)号：US08194808B2

公开(公告)日：2012-06-05

申请号：US12213172

申请日：2008-06-16

Applicant: Rohit V. Gaikwad

Inventor： Rohit V. Gaikwad

IPC: H04B7/10

CPC classification number: H03H17/0294 ,  H04L7/046 ,  H04L27/0002

Abstract: A method and apparatus is disclosed to process a received single stream communication signal and/or a multiple stream communication. A communications receiver is configured to receive the received communication signal. A communications receiver determines whether the received communication signal includes a single stream communication signal or a multiple stream communication signal. The communications receiver determines whether a received communication signal complies with a known single stream communications standard. The communications receiver determines whether the received communication signal complies with a known multiple stream communications standard. The communications receiver decodes the received communication signal according to the known single stream communications standard upon determining the received communication includes the signal single stream communication signal. The communications receiver decodes the received communication signal according to the known multiple stream communications standard upon determining the received communication includes the multiple stream communication signal.

Abstract translation: 公开了一种处理所接收的单流通信信号和/或多流通信的方法和装置。 通信接收机被配置为接收所接收的通信信号。 通信接收机确定所接收的通信信号是否包括单个流通信信号或多个流通信信号。 通信接收机确定所接收的通信信号是否符合已知的单流通信标准。 通信接收机确定接收到的通信信号是否符合已知的多流通信标准。 在确定所接收的通信包括信号单流通信信号时，通信接收机根据已知的单流通信标准解码所接收的通信信号。 在确定所接收的通信包括多流通信信号时，通信接收机根据已知的多流通信标准解码所接收的通信信号。

公开(公告)号：US08116408B2

公开(公告)日：2012-02-14

申请号：US12213179

申请日：2008-06-16

Applicant: Rohit V. Gaikwad

Inventor： Rohit V. Gaikwad

IPC: H04L27/06

CPC classification number: H03H17/0294 ,  H04L7/046 ,  H04L27/0002

Abstract: A method and apparatus is disclosed to recover at least one information payload from a frame and/or to configure one or more reception parameters to receive a future frame to support RIFS. A physical layer device (PHY) receives at least a training sequence embedded in the frame of a transmitted communication signal using a receiver filter bandwidth corresponding to a variable filter training sequence bandwidth. The PHY determines an amount of gain necessary to recover an information payload embedded in the frame based on the recovery of the training sequence. The PHY determines an amount of gain necessary to recover an information payload embedded in the frame based on the recovery of the preamble. A previous communications receiver gain is adjusted by the difference between the amount of gain necessary to recover the information payload and the previous communications receiver gain. The PHY adjusts the receiver filter bandwidth from the variable filter training sequence bandwidth to a variable filter information payload bandwidth. The PHY recovers the at least one information payload embedded in frame using the variable filter information payload bandwidth. The PHY adjusts the receiver filter bandwidth from the information payload bandwidth to the variable filter training sequence bandwidth to receive the future frame.

Abstract translation: 公开了一种用于从帧恢复至少一个信息有效载荷和/或配置一个或多个接收参数以接收未来帧以支持RIFS的方法和装置。 物理层设备（PHY）使用与可变滤波器训练序列带宽相对应的接收机滤波器带宽，接收至少嵌入在所发送的通信信号的帧中的训练序列。 基于训练序列的恢复，PHY确定恢复嵌入在帧中的信息有效载荷所需的增益量。 PHY基于前导码的恢复来确定恢复嵌入在帧中的信息有效载荷所需的增益量。 先前的通信接收机增益通过恢复信息有效载荷所需的增益量与先前的通信接收机增益之间的差异来调整。 PHY将接收机滤波器带宽从可变滤波器训练序列带宽调整到可变滤波器信息有效载荷带宽。 PHY使用可变过滤器信息有效载荷带宽恢复嵌入在帧中的至少一个信息有效载荷。 PHY将接收机滤波器带宽从信息有效载荷带宽调整到可变滤波器训练序列带宽以接收未来帧。

公开(公告)号：US06839429B1

公开(公告)日：2005-01-04

申请号：US09266413

申请日：1999-03-10

Applicant: Rohit V. Gaikwad ,  Richard G. Baraniuk

Inventor： Rohit V. Gaikwad ,  Richard G. Baraniuk

IPC: H04L5/14 ,  H04L27/00 ,  H04L27/26 ,  H04M1/76 ,  H04M7/00 ,  H04M9/00

CPC classification number: H04L5/14 ,  H04L27/00 ,  H04L27/2608 ,  H04L27/2614

Abstract: System and methods for determining an optimized transmit spectra (spectral distributions of transmission power) for a set of communications channels that experience cross-talk among themselves and for transmitting data on the channels. The transmit spectra are preferably constructed so that largely contiguous frequency bands are allocated to each signaling direction (upstream/downstream) on each communications channel and/or to each channel in the set of channels. In one embodiment, each communications channel is restricted to a maximum time-averaged power. The method preferably includes steps of determining the channel transfer functions of the communications channel, determining interference characteristics of the channels, calculating substantially optimal transmit spectra for the communications channels, and redistributing the frequency bins so that they are contiguously grouped in each transmit spectra. The contiguous groupings allow wider frequency bands for signaling in the channel. In one embodiment, the channel is limited by a “peak-power constraint.”

公开(公告)号：US08199857B2

公开(公告)日：2012-06-12

申请号：US12213175

申请日：2008-06-16

Applicant: Rohit V. Gaikwad ,  David Chuong Lam

Inventor： Rohit V. Gaikwad ,  David Chuong Lam

IPC: H03K9/00

CPC classification number: H03D3/007 ,  H04W84/12 ,  H04W88/06

Abstract: A method and apparatus is disclosed to dynamically reconfigure a communications receiver to support one or more single stream modes of operation, multiple stream modes of operation, and/or propriety modes of operation. The communications receiver is configured to support according to a first single stream mode of operation, multiple stream mode of operation, and/or proprietary mode of operation according to a known single stream communications standard, a known multiple stream communications standard and/or a proprietary communications standard. The communications receiver may receive a single stream communications signal and/or a multiple stream communications signal having a second single stream mode of operation, multiple stream mode of operation, and/or proprietary mode of operation according to a known single stream communications standard, a known multiple stream communications standard and/or a proprietary communications standard. The communications receiver may be dynamically re-configured to the second single stream mode of operation, multiple stream mode of operation, and/or proprietary mode of operation to process the single stream communications signal and/or a multiple stream communications signal.

Abstract translation: 公开了一种方法和装置，以动态地重新配置通信接收器以支持一个或多个单流操作模式，多个流操作模式和/或适当的操作模式。 通信接收机被配置为根据已知的单流通信标准，已知的多流通信标准和/或专有的流量，根据第一单流操作模式，多流操作模式和/或专有操作模式来支持 通信标准。 通信接收机可以根据已知的单流通信标准接收具有第二单流操作模式，多流操作模式和/或专有操作模式的单流通信信号和/或多流通信信号， 已知的多流通信标准和/或专用通信标准。 通信接收机可以被动态地重新配置为第二单流操作模式，多流操作模式和/或专有操作模式以处理单流通信信号和/或多流通信信号。

公开(公告)号：US20100208715A1

公开(公告)日：2010-08-19

申请号：US12770628

申请日：2010-04-29

Applicant: Amit G. Bagchi ,  Joseph Paul Lauer ,  Srinivasa H. Garlapati ,  Rohit V. Gaikwad ,  Joonsuk Kim ,  Paul Anthony Lettieri

Inventor： Amit G. Bagchi ,  Joseph Paul Lauer ,  Srinivasa H. Garlapati ,  Rohit V. Gaikwad ,  Joonsuk Kim ,  Paul Anthony Lettieri

IPC: H04W4/00 ,  H04B1/707

CPC classification number: H04W40/02 ,  H04L27/0012 ,  H04W84/12 ,  Y02D70/142 ,  Y02D70/30

Abstract: Classifier for communication device. A communication device includes a classifier and a number of PHY (physical layer) receivers communicatively coupled thereto that enable the communication device to process various received signal types. Each of the PHY receivers is operable to perform pre-processing of a received frame (or packet) of data and to calculate a confidence level indicating whether the received frame is intended for that particular PHY receiver; this pre-processing does not involve processing (e.g., demodulation and/or decoding) of the received frame. Those PHY receivers having sufficiently high confidence levels assert claims to the classifier for the received frame. The classifier is operable to arbitrate between competing claims by 2 or more PHY receivers and to ensure that the received frame is provided to the PHY receiver for which it is intended.

Abstract translation: 通讯设备分类器 通信设备包括分类器和通信地耦合到其上的多个PHY（物理层）接收器，其使通信设备能够处理各种接收的信号类型。 每个PHY接收器可操作以执行数据的接收帧（或分组）的预处理，并且计算指示所接收的帧是否适用于该特定PHY接收机的置信度; 该预处理不涉及对接收到的帧的处理（例如，解调和/或解码）。 具有足够高的置信水平的那些PHY接收机向所述分类器声明所接收的帧。 分类器可操作以在两个或多个PHY接收器的竞争性声明之间进行仲裁，并确保接收到的帧被提供给其所期望的PHY接收机。

公开(公告)号：US20080139156A1

公开(公告)日：2008-06-12

申请号：US11807814

申请日：2007-05-30

Applicant: Arya Reza Behzad ,  Rohit V. Gaikwad

Inventor： Arya Reza Behzad ,  Rohit V. Gaikwad

IPC: H04B1/10

CPC classification number: H04B1/0067

Abstract: A receiver includes a plurality of RF receiver modules, a plurality of analog baseband sections, a plurality of analog to digital conversion sections, and a digital baseband processing module. The RF receiver modules convert inbound RF signals into a plurality of inbound analog signals. When the receiver is in a first mode, one of the plurality of analog baseband sections is active to adjust one of the plurality of inbound analog signals to produce an adjusted inbound analog signal; one of the plurality of analog to digital conversion sections converts the adjusted inbound analog signal into an inbound digital signal; and a portion of the digital baseband processing module is active to convert the inbound digital signal into inbound data.

Abstract translation: 接收机包括多个RF接收机模块，多个模拟基带部分，多个模数转换部分和数字基带处理模块。 RF接收机模块将入站RF信号转换成多个入站模拟信号。 当接收机处于第一模式时，多个模拟基带部分之一被激活以调整多个入站模拟信号之一以产生经调整的入站模拟信号; 多个模数转换部分中的一个将经调整的入站模拟信号转换成入站数字信号; 并且数字基带处理模块的一部分被激活以将入站数字信号转换为入站数据。

公开(公告)号：US20080101495A1

公开(公告)日：2008-05-01

申请号：US11590062

申请日：2006-10-30

Applicant: Rohit V. Gaikwad

Inventor： Rohit V. Gaikwad

IPC: H04L1/02

CPC classification number: H04L1/0631 ,  H04L25/0208 ,  H04L25/0224 ,  H04L25/0226 ,  H04L25/0242 ,  H04L27/261 ,  H04L27/2662 ,  H04L27/2675

Abstract: A technique to determine sampling frequency offset (SFO) phase shift and perform channel estimation for symbols of a signal communicated across a multiple-input-multiple-output (MIMO) communication channel, in which preambles utilized for channel estimation are sent over more than one time block. Because the transmission of preambles used for channel estimation are sent over multiple time blocks, a SFO phase shift that is linear across tones of an OFDM signal is experienced between preambles of the two time blocks. Upon detection of the SFO phase shift, a weighting matrix used for channel estimation is modified to account for the SFO phase shift, in order to perform the channel estimation with correction for the SFO phase shift.

Abstract translation: 确定采样频率偏移（SFO）相移的技术，并对通过多输入多输出（MIMO）通信信道传送的信号的符号执行信道估计，其中用于信道估计的前导码被发送多于一个 时间块 由于用于信道估计的前导码的传输是通过多个时间块发送的，所以在两个时间块的前同步码之间经历了在OFDM信号的音调上线性的SFO相移。 在检测到SFO相移时，修改用于信道估计的加权矩阵以考虑SFO相移，以便通过对SFO相移进行校正来执行信道估计。

公开(公告)号：US08634501B2

公开(公告)日：2014-01-21

申请号：US13486355

申请日：2012-06-01

Applicant: Rohit V. Gaikwad

Inventor： Rohit V. Gaikwad

IPC: H04L27/00

CPC classification number: H03H17/0294 ,  H04L7/046 ,  H04L27/0002

Abstract: A method and apparatus is disclosed to process a received single stream communication signal and/or a multiple stream communication. A communications receiver is configured to receive the received communication signal. A communications receiver determines whether the received communication signal includes a single stream communication signal or a multiple stream communication signal. The communications receiver determines whether a received communication signal complies with a known single stream communications standard. The communications receiver determines whether the received communication signal complies with a known multiple stream communications standard. The communications receiver decodes the received communication signal according to the known single stream communications standard upon determining the received communication includes the signal single stream communication signal. The communications receiver decodes the received communication signal according to the known multiple stream communications standard upon determining the received communication includes the multiple stream communication signal.

Abstract translation: 公开了一种处理所接收的单流通信信号和/或多流通信的方法和装置。 通信接收机被配置为接收所接收的通信信号。 通信接收机确定所接收的通信信号是否包括单个流通信信号或多个流通信信号。 通信接收机确定所接收的通信信号是否符合已知的单流通信标准。 通信接收机确定接收到的通信信号是否符合已知的多流通信标准。 在确定所接收的通信包括信号单流通信信号时，通信接收机根据已知的单流通信标准解码所接收的通信信号。 在确定所接收的通信包括多流通信信号时，通信接收机根据已知的多流通信标准解码所接收的通信信号。

公开(公告)号：US07792227B2

公开(公告)日：2010-09-07

申请号：US11132939

申请日：2005-05-19

Applicant: R. Tushar Moorti ,  Rohit V. Gaikwad ,  Amit G. Bagchi

Inventor： R. Tushar Moorti ,  Rohit V. Gaikwad ,  Amit G. Bagchi

IPC: H04L1/02

CPC classification number: H04L1/0631 ,  H04B7/10 ,  H04L1/0059 ,  H04L27/00

Abstract: The present invention provides a method for carrier detection associated with the receipt of MIMO RF packet communications. This involves receiving multiple MIMO RF packet communications with multiple receiver pathways, wherein the RF packet communications each comprise a preamble and data. The RF packet communications are sampled by a carrier detector before, during or after conversion to baseband. The carrier detectors are used to produce a set of carrier detection metrics for each reception pathway. These carrier detection metrics may be combined arithmetically with those of other reception pathways to produce a multi-reception pathway carrier detect. Alternatively, these carrier detection metrics can be processed to produce a logical decision or binary detection signal value associated with each reception pathway, which is then logically combined with the logical decisions of other reception pathways to produce a multi-reception pathway carrier detect.

Abstract translation: 本发明提供了一种与接收MIMO RF分组通信相关联的载波检测方法。 这包括接收与多个接收机路径的多个MIMO RF分组通信，其中RF分组通信各自包括前导码和数据。 在转换到基带之前，期间或之后，载波检测器对RF分组通信进行采样。 载波检测器用于为每个接收路径产生一组载波检测度量。 这些载波检测度量可以与其他接收路径的载波检测度量进行算术计算，以产生多接收路径载波检测。 或者，可以处理这些载波检测度量以产生与每个接收路径相关联的逻辑判决或二进制检测信号值，然后逻辑判定或二进制检测信号值与其他接收路径的逻辑决策逻辑组合以产生多接收路径载波检测。

公开(公告)号：US07715350B2

公开(公告)日：2010-05-11

申请号：US10675478

申请日：2003-09-30

Applicant: Amit G. Bagchi ,  Joseph Paul Lauer ,  Srinivasa H. Garlapati ,  Rohit V. Gaikwad ,  Joonsuk Kim ,  Paul Anthony Lettieri

Inventor： Amit G. Bagchi ,  Joseph Paul Lauer ,  Srinivasa H. Garlapati ,  Rohit V. Gaikwad ,  Joonsuk Kim ,  Paul Anthony Lettieri

IPC: H04Q7/24

CPC classification number: H04W40/02 ,  H04L27/0012 ,  H04W84/12 ,  Y02D70/142 ,  Y02D70/30

Abstract: Classifier for communication device. A communication device includes a classifier and a number of PHY (physical layer) receivers communicatively coupled thereto that enable the communication device to process various received signal types. Each of the PHY receivers is operable to perform pre-processing of a received frame (or packet) of data and to calculate a confidence level indicating whether the received frame is intended for that particular PHY receiver; this pre-processing does not involve processing (e.g., demodulation and/or decoding) of the received frame. Those PHY receivers having sufficiently high confidence levels assert claims to the classifier for the received frame. The classifier is operable to arbitrate between competing claims by 2 or more PHY receivers and to ensure that the received frame is provided to the PHY receiver for which it is intended.