公开(公告)号：US08861653B2

公开(公告)日：2014-10-14

申请号：US13464695

申请日：2012-05-04

申请人： Divaydeep Sikri

发明人： Divaydeep Sikri

IPC分类号： H04L27/06

CPC分类号： H03M13/41 ,  H03M13/09 ,  H03M13/23 ,  H03M13/3707 ,  H03M13/3723 ,  H04L1/0054

摘要： Decoders and communications devices including such decoders can obtain a convolutional coded bit stream including a plurality of coded data bits. The convolutional coded bit stream may be coded according to one or more generator polynomials such that each information bit is related to two or more coded data bits in a manner to be determinable from a mathematical combination of the two or more coded data bits of the convolutional coded bit stream. A priori information associated with each information bit can be calculated based at least in part on the mathematical combination of the two or more coded data bits. Employing the a priori information, a binary value for each information bit can be calculated. Other aspects, embodiments, and features are also claimed and described.

摘要翻译： 包括这种解码器的解码器和通信设备可以获得包括多个编码数据位的卷积编码比特流。 卷积编码比特流可以根据一个或多个生成多项式进行编码，使得每个信息比特以两个或多个编码数据比特相关，可以从卷积的两个或更多个编码数据比特的数学组合来确定 编码比特流。 可以至少部分地基于两个或更多个编码数据位的数学组合来计算与每个信息位相关联的先验信息。 使用先验信息，可以计算每个信息位的二进制值。 还要求和描述其它方面，实施例和特征。

公开(公告)号：US08787506B2

公开(公告)日：2014-07-22

申请号：US13464667

申请日：2012-05-04

申请人： Divaydeep Sikri

发明人： Divaydeep Sikri

IPC分类号： H04L27/06

CPC分类号： H03M13/23 ,  H03M13/09 ,  H03M13/3715 ,  H03M13/373 ,  H03M13/3776 ,  H03M13/41

摘要： Decoder and communications devices including such decoders can obtain a convolutional coded bit stream including a plurality of coded data bits. According to some implementations, if a signal quality associated with the convolutional coded bit stream is above a predetermined threshold, a decoded value for each information bit may be calculated at least from a modulo 2 sum of a coded data bit added to at least one other coded data bit, at least one previously calculated information bit, or a combination of at least one other coded data bit and at least one previously calculated information bit. Also, according to some implementations, if the signal quality associated with the convolutional coded bit stream is not above the predetermined threshold, the convolutional coded bit stream may be decoded with a conventional convolutional decoding scheme. Other aspects, embodiments, and features are also claimed and described.

摘要翻译： 包括这种解码器的解码器和通信设备可以获得包括多个编码数据位的卷积编码比特流。 根据一些实施方式，如果与卷积编码比特流相关联的信号质量高于预定阈值，则可以至少从加到至少另一个的编码数据比特的模2之和来计算每个信息比特的解码值 至少一个先前计算的信息位，或至少一个其它编码数据位和至少一个先前计算的信息位的组合。 此外，根据一些实施方式，如果与卷积编码比特流相关联的信号质量不高于预定阈值，则可以用常规卷积解码方案对卷积编码比特流进行解码。 还要求和描述其它方面，实施例和特征。

公开(公告)号：US08774261B2

公开(公告)日：2014-07-08

申请号：US13493203

申请日：2012-06-11

申请人： Farrokh Abrishamkar ,  Divaydeep Sikri ,  Ken Delgado

发明人： Farrokh Abrishamkar ,  Divaydeep Sikri ,  Ken Delgado

IPC分类号： H03H7/30

CPC分类号： H04L27/01 ,  H04L25/0202 ,  H04L25/03012

摘要： A two stage interference cancellation (IC) process includes a linear IC stage that suppresses co-channel interference (CCI) and adjacent channel interference (ACI). The linear IC stage disambiguates otherwise super-trellis data for non-linear cancellation. Soft linear IC processing is driven by a-posteriori probability (Apop) information. A second stage performs expectation maximization/Baum Welch (EM-BW) processing that reduces residual ISI left over from the first stage and also generates the Apop which drives the soft linear IC in an iterative manner.

摘要翻译： 两级干扰消除（IC）处理包括抑制同信道干扰（CCI）和相邻信道干扰（ACI）的线性IC级。 线性IC阶段消除了非线性消除的超网格数据。 软线性IC处理由后验概率（Apop）信息驱动。 第二级执行预期最大化/ Baum Welch（EM-BW）处理，其减少从第一级剩余的剩余ISI，并且还产生以迭代方式驱动软线性IC的Apop。

公开(公告)号：US20140064161A1

公开(公告)日：2014-03-06

申请号：US13605380

申请日：2012-09-06

申请人： Divaydeep Sikri ,  Hassan Rafique ,  Mukund Agarwal

发明人： Divaydeep Sikri ,  Hassan Rafique ,  Mukund Agarwal

IPC分类号： H04W52/02

CPC分类号： H04W52/0209 ,  H04W52/0229 ,  Y02D70/1224 ,  Y02D70/1226

摘要： Communications devices are adapted to receive a plurality of RF bursts of a radio block, where the plurality of RF bursts includes a number of RF bursts less than a total number of RF bursts for the radio block. A header can be decoded from the received plurality of RF burst. From the decoded header, a determination may be made whether the radio block is intended for the communications device or for another device. According to at least some examples, if the radio block is determined to be intended for another device, at least a portion of a receiver circuit of the communications device can be powered down. Also, according to at least some examples, if the radio block is determined to be intended for the receiving communications device, a data payload of the radio block may be decoded. Other aspects, embodiments, and features are also claimed and described.

摘要翻译： 通信设备适于接收无线电块的多个RF突发，其中多个RF突发包括小于无线电块的RF突发的总数的多个RF突发。 可以从接收到的多个RF突发中解码报头。 从解码的报头，可以确定无线电块是针对通信设备还是针对另一设备。 根据至少一些示例，如果无线电块被确定为旨在用于另一设备，那么通信设备的接收机电路的至少一部分可以掉电。 此外，根据至少一些示例，如果无线电块被确定为旨在用于接收通信设备，则可以对无线电块的数据有效载荷进行解码。 还要求和描述其它方面，实施例和特征。

公开(公告)号：US08619928B2

公开(公告)日：2013-12-31

申请号：US12553848

申请日：2009-09-03

申请人： Farrokh Abrishamkar ,  Divaydeep Sikri ,  Raghu N. Challa ,  Bahadir Canpolat

发明人： Farrokh Abrishamkar ,  Divaydeep Sikri ,  Raghu N. Challa ,  Bahadir Canpolat

IPC分类号： H04B1/10

CPC分类号： H04L25/0328 ,  H04L25/0202 ,  H04L25/03286 ,  H04L25/03292 ,  H04L25/03299 ,  H04L2025/03726

摘要： A multi-stage interference suppression receiver includes a short equalizer section configured to operate on a first portion of a received signal received over a channel to produce a first equalized signal and a first estimate of the channel, a channel estimator section configured to operate on the first equalized signal to produce a second equalized signal, the channel estimator section comprising a linear estimator and a non-linear estimator, a long equalizer section configured to operate on a second portion of the received signal to produce a first estimate of symbols in the received signal and a second estimate of the channel and an interference canceller section configured to operate on the first estimate of symbols in the received signal to generate a second estimate of symbols in the received signal based on, at least in part, the second estimate of the channel.

摘要翻译： 多级干扰抑制接收机包括短均衡器部分，其被配置为对通过信道接收的接收信号的第一部分进行操作以产生第一均衡信号和信道的第一估计，信道估计器部分被配置为在 第一均衡信号以产生第二均衡信号，所述信道估计器部分包括线性估计器和非线性估计器，长均衡器部分，被配置为在所接收的信号的第二部分上进行操作，以产生接收到的符号的第一估计值 信号和信道的第二估计以及干扰消除器部分，被配置为在接收信号中对符号的第一估计进行操作，以至少部分地基于接收信号的第二估计来生成接收信号中的符号的第二估计 渠道。

公开(公告)号：US08615030B2

公开(公告)日：2013-12-24

申请号：US12435039

申请日：2009-05-04

申请人： Farrokh Abrishamkar ,  Yingqun Yu ,  Michael McCloud ,  Divaydeep Sikri

发明人： Farrokh Abrishamkar ,  Yingqun Yu ,  Michael McCloud ,  Divaydeep Sikri

IPC分类号： H04B1/7105

CPC分类号： H04B1/71052

摘要： Systems and methods for multi-user detection are provided. In one aspect of the disclosure, an apparatus is provided. The apparatus comprises a processing unit configured to process a plurality of received chips into a plurality of received symbols for a plurality of users. The apparatus further comprises a computation unit configured to compute a multi-user matrix relating a plurality of user symbols for the plurality of users to the plurality of received symbols and a detection unit configured to detect the plurality of user symbols for the plurality of users using the computed multi-user matrix and the plurality of received symbols.

摘要翻译： 提供了多用户检测的系统和方法。 在本公开的一个方面，提供一种装置。 该装置包括：处理单元，被配置为将多个接收到的码片处理为多个用户的多个接收符号。 所述装置还包括计算单元，被配置为计算将所述多个用户的多个用户符号与所述多个接收到的符号相关联的多用户矩阵;以及检测单元，被配置为使用所述多个用户矩阵来检测所述多个用户的所述多个用户符号 所计算的多用户矩阵和多个接收符号。

公开(公告)号：US20100278217A1

公开(公告)日：2010-11-04

申请号：US12435039

申请日：2009-05-04

申请人： Farrokh Abrishamkar ,  Yingqun Yu ,  Michael McCloud ,  Divaydeep Sikri

发明人： Farrokh Abrishamkar ,  Yingqun Yu ,  Michael McCloud ,  Divaydeep Sikri

IPC分类号： H04L27/06 ,  H04B1/707

CPC分类号： H04B1/71052

摘要： Systems and methods for multi-user detection are provided. In one aspect of the disclosure, an apparatus is provided. The apparatus comprises a processing unit configured to process a plurality of received chips into a plurality of received symbols for a plurality of users. The apparatus further comprises a computation unit configured to compute a multi-user matrix relating a plurality of user symbols for the plurality of users to the plurality of received symbols and a detection unit configured to detect the plurality of user symbols for the plurality of users using the computed multi-user matrix and the plurality of received symbols.

摘要翻译： 提供了多用户检测的系统和方法。 在本公开的一个方面，提供一种装置。 该装置包括：处理单元，被配置为将多个接收到的码片处理为多个用户的多个接收符号。 所述装置还包括计算单元，被配置为计算将所述多个用户的多个用户符号与所述多个接收到的符号相关联的多用户矩阵;以及检测单元，被配置为使用所述多个用户矩阵来检测所述多个用户的所述多个用户符号 所计算的多用户矩阵和多个接收符号。

公开(公告)号：US20100278035A1

公开(公告)日：2010-11-04

申请号：US12435114

申请日：2009-05-04

申请人： Wenjun Li ,  Yingqun Yu ,  Farrokh Abrishamkar ,  Divaydeep Sikri ,  Insung Kang

发明人： Wenjun Li ,  Yingqun Yu ,  Farrokh Abrishamkar ,  Divaydeep Sikri ,  Insung Kang

IPC分类号： H04J11/00

CPC分类号： H04B1/71052

摘要： Systems and methods for multi-user detection in a multiple access system are provided. In one aspect, an apparatus is provided. The apparatus comprises a processing unit configured to process received chips into received symbols for a plurality of users and a computation unit configured to compute a multi-user matrix using a Hadamard matrix, wherein the multi-user matrix relates user symbols for the plurality of users to the received symbols. The apparatus further comprises a detection unit configured to detect the user symbols for the plurality of users using the received symbols and the computed multi-user matrix.

摘要翻译： 提供了一种用于多访问系统中多用户检测的系统和方法。 一方面，提供了一种装置。 该装置包括：处理单元，被配置为将接收到的码片处理为多个用户的接收符号;以及计算单元，被配置为使用哈达玛矩阵来计算多用户矩阵，其中多用户矩阵与多个用户的用户符号相关 到收到的符号。 所述装置还包括检测单元，被配置为使用所接收的符号和所计算的多用户矩阵来检测所述多个用户的用户符号。

公开(公告)号：US20100046660A1

公开(公告)日：2010-02-25

申请号：US12464311

申请日：2009-05-12

申请人： Divaydeep Sikri ,  Farrokh Abrishamkar ,  Ming Yan ,  Nico De Laurentiis

发明人： Divaydeep Sikri ,  Farrokh Abrishamkar ,  Ming Yan ,  Nico De Laurentiis

IPC分类号： H04B15/00 ,  H04B1/10

CPC分类号： H04W56/00 ,  H04B7/02

摘要： A method for timing and frequency synchronization in a wireless system is provided. The method comprises the steps of receiving a burst of symbols, selecting a subset of the burst of symbols, iteratively adjusting the subset of the burst of symbols by a plurality of timing offsets and calculating, for each timing offset, a first performance metric corresponding to the adjusted subset. The method further comprises the steps of determining one of the plurality of timing offsets to be a preferred timing offset based upon the first performance metric thereof, iteratively rotating the subset of the burst of symbols by a plurality of frequency offsets and calculating, for each frequency offset, a second performance metric corresponding to the rotated subset, and determining one of the plurality of frequency offsets to be a preferred frequency offset based upon the second performance metric thereof.

摘要翻译： 提供了一种用于无线系统中的定时和频率同步的方法。 该方法包括以下步骤：接收符号脉冲串，选择符号脉冲串的子集，通过多个定时偏移迭代地调整符号脉冲串的子集，并且针对每个定时偏移量，计算对应于 调整后的子集。 该方法还包括以下步骤：基于其第一性能度量，将多个定时偏移中的一个定时偏移确定为优选的定时偏移，将符号突发的子集迭代地旋转多个频率偏移，并且针对每个频率 偏移量，对应于旋转的子集的第二性能量度，以及基于其第二性能度量，将所述多个频率偏移中的一个确定为优选频率偏移。

公开(公告)号：US08804876B2

公开(公告)日：2014-08-12

申请号：US12390337

申请日：2009-02-20

申请人： Divaydeep Sikri ,  Nico De Laurentiis ,  Hassan Rafique ,  Lukasz Bednarz ,  Philip Children

发明人： Divaydeep Sikri ,  Nico De Laurentiis ,  Hassan Rafique ,  Lukasz Bednarz ,  Philip Children

IPC分类号： H03D3/22

CPC分类号： H04L27/0012 ,  H04L1/20

摘要： An apparatus is provided for demodulating a block, the block including a plurality of bursts. The apparatus comprises a demodulator configured to demodulate the plurality of bursts and a modulation detector configured to detect a modulation scheme for a current burst in the plurality of bursts and to determine whether there is a high probability that the detected modulation scheme is correct. The modulation detector instructs the demodulator to demodulate each burst subsequent to the current burst in the plurality of bursts based on the detected modulation scheme when the modulation detector determines a high probability that the modulation scheme is correct.

摘要翻译： 提供了一种用于解调块的装置，该块包括多个突发。 该装置包括：解调器，被配置为解调多个突发;以及调制检测器，被配置为检测多个突发中的当前突发的调制方案，并且确定检测到的调制方案是否是正确的高概率。 当调制检测器确定调制方案是正确的高概率时，调制检测器指示解调器基于检测到的调制方案来解调多个突发中的当前突发之后的每个突发。