专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US07457367B2 Detector and method for estimating data probability in a multi-channel receiver 有权
标题翻译：用于估计多通道接收机中的数据概率的检测器和方法
公开(公告)号：US07457367B2
公开(公告)日：2008-11-25
申请号：US11177938
申请日：2005-07-07
申请人： Behrouz Farhang-Boroujeny , Haidong Zhu , Zhenning Shi , Stephen Andrew Laraway
发明人： Behrouz Farhang-Boroujeny , Haidong Zhu , Zhenning Shi , Stephen Andrew Laraway
IPC分类号： H04L5/12 , H04L23/02
CPC分类号： H04L1/005 , H04B1/7105 , H04L1/0052 , H04L1/0631
摘要： A detector and method for estimating channel data probability in a multi-user or multiple-input multiple-output communication system includes summing conditional bit probabilities conditioned on hypothetical channel data patterns over stochastically selected hypothetical channel data patterns. Various detailed hardware structures and circuits are also described.
摘要翻译：一种用于在多用户或多输入多输出通信系统中估计信道数据概率的检测器和方法包括：对随机选择的假想信道数据模式进行假设信道数据模式的条件位概率求和。还描述了各种详细的硬件结构和电路。

2. 发明授权

US07813438B2 Detector and method for estimating data probability in a multi-channel receiver 有权
标题翻译：用于估计多通道接收机中的数据概率的检测器和方法
公开(公告)号：US07813438B2
公开(公告)日：2010-10-12
申请号：US12209143
申请日：2008-09-11
申请人： Behrouz Farhang-Boroujeny , Haidong Zhu , Zhenning Shi , Stephen Andrew Laraway
发明人： Behrouz Farhang-Boroujeny , Haidong Zhu , Zhenning Shi , Stephen Andrew Laraway
IPC分类号： H04L5/12
CPC分类号： H04L1/005 , H04B1/7105 , H04L1/0052 , H04L1/0631
摘要： A detector and method for estimating channel data probability in a multi-user or multiple-input multiple-output communication system includes summing conditional bit probabilities conditioned on hypothetical channel data patterns over stochastically selected hypothetical channel data patterns. Various detailed hardware structures and circuits are also described.
摘要翻译：一种用于在多用户或多输入多输出通信系统中估计信道数据概率的检测器和方法包括：对随机选择的假想信道数据模式进行假设信道数据模式的条件位概率求和。还描述了各种详细的硬件结构和电路。

3. 发明申请

US20090003483A1 Detector and Method for Estimating Data Probability in a Multi-Channel Receiver 有权
标题翻译：用于估计多信道接收机中数据概率的检测器和方法
公开(公告)号：US20090003483A1
公开(公告)日：2009-01-01
申请号：US12209143
申请日：2008-09-11
申请人： Behrouz Farhang-Boroujeny , Haidong Zhu , Zhenning Shi , Stephen Andrew Laraway
发明人： Behrouz Farhang-Boroujeny , Haidong Zhu , Zhenning Shi , Stephen Andrew Laraway
IPC分类号： H04L5/12
CPC分类号： H04L1/005 , H04B1/7105 , H04L1/0052 , H04L1/0631
摘要： A detector and method for estimating channel data probability in a multi-user or multiple-input multiple-output communication system includes summing conditional bit probabilities conditioned on hypothetical channel data patterns over stochastically selected hypothetical channel data patterns. Various detailed hardware structures and circuits are also described.
摘要翻译：一种用于在多用户或多输入多输出通信系统中估计信道数据概率的检测器和方法包括：对随机选择的假想信道数据模式进行假设信道数据模式的条件位概率求和。还描述了各种详细的硬件结构和电路。

4. 发明申请

US20060023636A1 Detector and method for estimating data probability in a multi-channel receiver 有权
标题翻译：用于估计多通道接收机中的数据概率的检测器和方法
公开(公告)号：US20060023636A1
公开(公告)日：2006-02-02
申请号：US11177938
申请日：2005-07-07
申请人： Behrouz Farhang-Boroujeny , Haidong Zhu , Zhenning Shi , Stephen Laraway
发明人： Behrouz Farhang-Boroujeny , Haidong Zhu , Zhenning Shi , Stephen Laraway
IPC分类号： H04J1/16
CPC分类号： H04L1/005 , H04B1/7105 , H04L1/0052 , H04L1/0631
摘要： A detector and method for estimating channel data probability in a multi-user or multiple-input multiple-output communication system includes summing conditional bit probabilities conditioned on hypothetical channel data patterns over stochastically selected hypothetical channel data patterns. Various detailed hardware structures and circuits are also described.
摘要翻译：一种用于在多用户或多输入多输出通信系统中估计信道数据概率的检测器和方法包括：对随机选择的假想信道数据模式进行假设信道数据模式的条件位概率求和。还描述了各种详细的硬件结构和电路。

5. 发明授权

US06798754B1 Acoustic echo cancellation equipped with howling suppressor and double-talk detector 失效
标题翻译：声回波消除装备有啸叫抑制器和双通话检测器
公开(公告)号：US06798754B1
公开(公告)日：2004-09-28
申请号：US09554244
申请日：2000-07-10
申请人： Behrouz Farhang-Boroujeny
发明人： Behrouz Farhang-Boroujeny
IPC分类号： H04B320
CPC分类号： H03H21/0012 , H04M9/082
摘要： An acoustic echo canceller (AEC) is devised and tested in a real environment. The devised AEC puts together a number of available digital signal processing methods to make a real-time implementation of the AEC possible. The echo length coverage of the devised AEC can be as large as several hundred milliseconds. The devised AEC is based on a frequency domain implementation of the least-mean square (LMS) determination method. The fast Fourier transforms required for the implementation have been carefully selected and optimized so that a realtime implementation of the AEC is possible. In addition, two novel techniques are invented and added to the AEC to overcome two annoying serious problems commonly encountered in AEC systems. The first technique is a special howling suppressor which can successfully prevent the oscillation of the AEC under all possible practical conditions. The second proposed technique is a very simple, but yet very effective, double-talk detector. The double-talk detector is used to control the step-size of the AEC adaptation mechanism. To demonstrate a preferred embodiment of the invention, the AEC is programmed in C-language for running on personal computers. At a sampling frequency of 8 kHz, and for an echo coverage of 200 milliseconds the developed AEC program takes-up only about 40% of the CPU time of a Pentium 166 MHz processor. The proposed AEC can also be executed on other platforms.
摘要翻译：在真实环境中设计和测试声学回声消除器（AEC）。设计的AEC组合了一些可用的数字信号处理方法，以实现AEC的实时可行性。设计的AEC的回波长度覆盖可以高达几百毫秒。设计的AEC基于最小均方（LMS）确定方法的频域实现。已经精心选择和优化了实现所需的快速傅立叶变换，从而可以实现AEC的实时实现。另外，AEC发明并添加了两种新技术，以克服AEC系统中常见的两个令人讨厌的严重问题。第一种技术是一种特殊的啸声抑制器，可以在所有可能的实际条件下成功地防止AEC的振荡。第二种提出的技术是一种非常简单但又非常有效的双重探测器。双向通话检测器用于控制AEC适配机构的步长。为了演示本发明的优选实施例，AEC以C语言编程以在个人计算机上运行。在8 kHz的采样频率下，对于200毫秒的回波覆盖，开发的AEC程序只占用奔腾166 MHz处理器的CPU时间的大约40％。提出的AEC也可以在其他平台上执行。

6. 发明授权

US06438161B1 Method of designing an equalizer 失效
标题翻译：设计均衡器的方法
公开(公告)号：US06438161B1
公开(公告)日：2002-08-20
申请号：US09406930
申请日：1999-09-28
申请人： Behrouz Farhang-Boroujeny , Baoli Wang , Mrityunjoy Chakraborty
发明人： Behrouz Farhang-Boroujeny , Baoli Wang , Mrityunjoy Chakraborty
IPC分类号： H04L2503
CPC分类号： H04L25/0212 , H04L25/03159 , H04L27/01 , H04L2025/03414
摘要： A method of designing an equalizer having a target response suited to a particular subclass of communication channels to shorten the duration of the impulse response of the overall transmission system, a class of channels being divided into a number of subclasses, each subclass having a fixed set of parameters selected to achieve the target response of the equalizer for that particular subclass of channel, the method comprising the steps of recognizing the subclass of the channel; and identifying the fixed set of parameters for the equaliser to achieve the target response by reference to a look-up table based on the subclass of the channel.
摘要翻译：一种设计具有适合于特定通信信道子类的目标响应的均衡器的方法，以缩短整个传输系统的脉冲响应的持续时间，一类信道被划分为多个子类，每个子类具有固定集合的参数被选择以实现该特定子信道的均衡器的目标响应，该方法包括以下步骤：识别信道的子类; 并且通过参考基于信道的子类的查找表来识别用于均衡器的固定参数集合以实现目标响应。

7. 发明授权

US07634012B2 Multi-carrier spread spectrum using non-linear modification of sub-carrier bands 有权
标题翻译：使用子载波频带的非线性修改的多载波扩频
公开(公告)号：US07634012B2
公开(公告)日：2009-12-15
申请号：US10558929
申请日：2004-06-09
申请人： Behrouz Farhang-Boroujeny , Cynthia M. Furse
发明人： Behrouz Farhang-Boroujeny , Cynthia M. Furse
IPC分类号： H04L27/28
CPC分类号： H04J13/00 , H04L27/2637 , H04L27/2653
摘要： A multi-carrier spread spectrum (MC-SS) technique is disclosed which includes non-linearly modifying the sub-carriers in the receiver. A method (600) and receiver (200, 300) for processing an MC-SS signal, a transceiver for MC-SS communications (700), and an MC-SS radar (800) are describe.
摘要翻译：公开了一种多载波扩频（MC-SS）技术，其包括非线性修改接收机中的子载波。描述用于处理MC-SS信号的方法（600）和接收器（200,300），用于MC-SS通信的收发器（700）和MC-SS雷达（800）。

8. 发明申请

US20080273632A1 Estimation of Log-Likelihood Using Constrained Markov-Chain Monte Carlo Simulation 有权
标题翻译：使用约束马尔可夫链蒙特卡罗模拟估计对数似然
公开(公告)号：US20080273632A1
公开(公告)日：2008-11-06
申请号：US12172771
申请日：2008-07-14
申请人： Behrouz Farhang-Boroujeny , Salam Akoum
发明人： Behrouz Farhang-Boroujeny , Salam Akoum
IPC分类号： H03D1/00
CPC分类号： H04L1/0045 , H04L1/0048 , H04L1/20 , H04L25/03242 , H04L25/067 , H04L2025/0342 , H04L2025/03426 , H04L2025/03624
摘要： Log likelihood ratios for data bits transmitted in a multi-dimensional signal are estimated using multiple Markov chain Monte Carlo simulations (MCMC). The MCMC simulations can include constraining symbols based on a most-likely symbol to improve the likelihood of finding distances for non-most-likely symbols. The log likelihood ratios can be calculated based on distances of the most-likely symbol and the non-most-likely symbols.
摘要翻译：使用多个马尔可夫链蒙特卡罗模拟（MCMC）估计在多维信号中传输的数据比特的对数似然比。 MCMC模拟可以包括基于最可能符号的约束符号，以提高找到非最可能符号的距离的可能性。可以基于最可能的符号和非最可能的符号的距离来计算对数似然比。

9. 发明授权

US06853626B1 Method and apparatus for echo cancellation in an asymmetric communication system 失效
标题翻译：在非对称通信系统中回波消除的方法和装置
公开(公告)号：US06853626B1
公开(公告)日：2005-02-08
申请号：US09532536
申请日：2000-03-22
申请人： Behrouz Farhang-Boroujeny , Chong Yuan Ng
发明人： Behrouz Farhang-Boroujeny , Chong Yuan Ng
IPC分类号： H04B3/20 , H04B3/23 , H04J3/16
CPC分类号： H04B3/23
摘要： A method and system for canceling echo signals originating from a transmitter at a predetermined data rate. The echo signals are received by a receiver at a different data rate. The echo system is configured to manipulate data rates of transmitted signals, and reconstruct echo signals for consideration by the receiver. In view of the band-limited nature of these echo signals, the invention intelligently reduces the computational complexity of reconstructing and canceling echo signals.
摘要翻译：一种用于以预定数据速率消除源自发射机的回波信号的方法和系统。回波信号由接收机以不同的数据速率接收。回波系统被配置为操纵传输信号的数据速率，并且重建回波信号以供接收机考虑。鉴于这些回波信号的带限性质，本发明智能地降低了重构和消除回波信号的计算复杂度。

10. 发明授权

US08045604B2 Estimation of log-likelihood using constrained markov-chain monte carlo simulation 有权
标题翻译：使用约束马尔可夫链蒙特卡罗模拟估计对数似然
公开(公告)号：US08045604B2
公开(公告)日：2011-10-25
申请号：US12172771
申请日：2008-07-14
申请人： Behrouz Farhang-Boroujeny , Salam Akoum
发明人： Behrouz Farhang-Boroujeny , Salam Akoum
IPC分类号： H04B3/46 , H04B17/00 , H04Q1/20
CPC分类号： H04L1/0045 , H04L1/0048 , H04L1/20 , H04L25/03242 , H04L25/067 , H04L2025/0342 , H04L2025/03426 , H04L2025/03624
摘要： Log likelihood ratios for data bits transmitted in a multi-dimensional signal are estimated using multiple Markov chain Monte Carlo simulations (MCMC). The MCMC simulations can include constraining symbols based on a most-likely symbol to improve the likelihood of finding distances for non-most-likely symbols. The log likelihood ratios can be calculated based on distances of the most-likely symbol and the non-most-likely symbols.
摘要翻译：使用多个马尔可夫链蒙特卡罗模拟（MCMC）估计在多维信号中传输的数据比特的对数似然比。 MCMC模拟可以包括基于最可能符号的约束符号，以提高找到非最可能符号的距离的可能性。可以基于最可能的符号和非最可能的符号的距离来计算对数似然比。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式