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1. 发明授权

US08300720B1 Methods and systems for diversity combining of synchronization statistics in OFDM systems 有权
标题翻译： OFDM系统中同步统计分集组合的方法和系统
公开(公告)号：US08300720B1
公开(公告)日：2012-10-30
申请号：US13178422
申请日：2011-07-07
申请人： Dumitru Mihai Ionescu , Abu Amanullah , Ghobad Heidari-Bateni
发明人： Dumitru Mihai Ionescu , Abu Amanullah , Ghobad Heidari-Bateni
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04L27/2657 , H04J11/0066 , H04L27/2675 , H04L27/2691
摘要： Various embodiments of the systems and methods described herein may be used to compute a minimum variance unbiased estimator by receiving a first OFDM signal at a pilot tone, receiving a second OFDM signal sent in the same frequency band and determining a differential phase metric between the first OFDM signal and the second OFDM signal. In some embodiments, the differential phase metric may be used to diversity combine synchronization statistics. In various embodiments, the differential phase metric may be used to detect a narrow-band interference.
摘要翻译：本文描述的系统和方法的各种实施例可以用于通过以导频音接收第一OFDM信号来计算最小方差无偏估计器，接收在相同频带中发送的第二OFDM信号，并且确定第一 OFDM信号和第二OFDM信号。在一些实施例中，差分相位度量可用于分集组合同步统计。在各种实施例中，差分相位度量可用于检测窄带干扰。

2. 发明申请

US20090168746A1 INCREASE EFFECTIVE BEACON CAPACITY 审中-公开
标题翻译：增加有效的信标能力
公开(公告)号：US20090168746A1
公开(公告)日：2009-07-02
申请号：US11968597
申请日：2008-01-02
申请人： Alaa Muqattash , Ghobad Heidari-Bateni
发明人： Alaa Muqattash , Ghobad Heidari-Bateni
IPC分类号： H04J3/06
CPC分类号： H04W72/02
摘要： According to an embodiment of the invention, systems and methods are provided to allow wireless network devices to transmit more data than the maximum length beacon during a beacon period. In some embodiments, the method includes transmitting an original beacon, determining if a beacon slot is available, selecting the available beacon slot; determining if the selected slot is within a beacon period of a neighbor, and transmitting an additional beacon. Other embodiments may include determining a different device address and EUI48 and selecting a new MAC information element for the additional beacon.
摘要翻译：根据本发明的实施例，提供了系统和方法，以允许无线网络设备在信标周期期间发送比最大长度信标更多的数据。在一些实施例中，该方法包括发送原始信标，确定信标时隙是否可用，选择可用信标时隙; 确定所选择的时隙是否在邻居的信标周期内，以及发送附加信标。其他实施例可以包括确定不同的设备地址和EUI48并且为附加信标选择新的MAC信息元素。

3. 发明申请

US20080247480A1 METHODS AND SYSTEMS FOR DETECTING A NARROW-BAND INTERFERER 有权
标题翻译：用于检测窄带干扰器的方法和系统
公开(公告)号：US20080247480A1
公开(公告)日：2008-10-09
申请号：US12099002
申请日：2008-04-07
申请人： Dumitru Mihai Ionescu , Abu Amanullah , Ghobad Heidari-Bateni
发明人： Dumitru Mihai Ionescu , Abu Amanullah , Ghobad Heidari-Bateni
IPC分类号： H04L27/28
CPC分类号： H04L27/2657 , H04J11/0066 , H04L27/2675 , H04L27/2691
摘要： Various embodiments of the systems and methods described herein may be used to compute a minimum variance unbiased estimator by receiving a first OFDM signal at a pilot tone, receiving a second OFDM signal sent in the same frequency band and determining a differential phase metric between the first OFDM signal and the second OFDM signal. In some embodiments, the differential phase metric may be used to diversity combine synchronization statistics. In various embodiments, the differential phase metric may be used to detect a narrow-band interference.
摘要翻译：本文描述的系统和方法的各种实施例可以用于通过以导频音接收第一OFDM信号来计算最小方差无偏估计器，接收在相同频带中发送的第二OFDM信号，并且确定第一 OFDM信号和第二OFDM信号。在一些实施例中，差分相位度量可用于分集组合同步统计。在各种实施例中，差分相位度量可以用于检测窄带干扰。

4. 发明申请

US20080238717A1 VARIABLE RATE ANALOG-TO-DIGITAL CONVERTER 有权
标题翻译：可变速率模拟数字转换器
公开(公告)号：US20080238717A1
公开(公告)日：2008-10-02
申请号：US11692767
申请日：2007-03-28
申请人： Robert Townsend Short , Ghobad Heidari-Bateni , Layne Lisenbee
发明人： Robert Townsend Short , Ghobad Heidari-Bateni , Layne Lisenbee
IPC分类号： H04M3/22
CPC分类号： H03M1/002 , H03M1/12 , H03M1/124 , H03M1/126
摘要： According to various embodiments of the invention a variable rate analog-to-digital converter can be used in conjunction with an anti-aliasing filter to allow the use of lower sampling rates, and accordingly, generally lower power consumption. For example, a lower sampling rate can be used when it is determined that no undesirable signals are present and a higher sampling period can be used when an undesirable signal is present. Determining the presence of an undesired signal can be based on signal-to-noise ratio, over-sampling, bit error rate, using a detector, etc. An undesirable signal can be any signal that is close in frequency to a signal of interest or signals farther away in frequency that has a relatively high amplitude. Sampling rate can be varied in a binary fashion, stepwise, continuously, etc.
摘要翻译：根据本发明的各种实施例，可变速率模数转换器可以与抗混叠滤波器一起使用，以允许使用较低的采样率，并因此通常降低功耗。例如，当确定不存在不期望的信号时可以使用更低的采样率，并且当存在不期望的信号时可以使用较高的采样周期。确定不需要的信号的存在可以基于信噪比，过采样，误码率，使用检测器等。不期望的信号可以是与感兴趣的信号频率接近的任何信号，或者信号在具有相对较高幅度的频率上更远。采样率可以二进制变化，逐步，连续等。

5. 发明申请

US20070200759A1 Ranging system and method 有权
标题翻译：测距系统和方法
公开(公告)号：US20070200759A1
公开(公告)日：2007-08-30
申请号：US11364522
申请日：2006-02-27
申请人： Ghobad Heidari-Bateni , Khawza Ahmed
发明人： Ghobad Heidari-Bateni , Khawza Ahmed
IPC分类号： G01S1/24 , G01S3/02
CPC分类号： G01S13/767
摘要： A system and method for estimating the range between two devices performs two or more ranging estimates with subsequent estimates performed using a clock that is offset in phase with respect to a prior estimate. The subsequent estimate allows estimate uncertainties due to a finite clock resolution to be reduced and can yield a range estimate with a higher degree of confidence. In one embodiment, these additional ranging estimates are performed at n/N (for n=1, . . . N−1, with N>1 and a positive integer) clock-period offset introduced in the device. The clock-period offset can be implemented using a number of approaches, and the effect of clock drift in the devices due to relative clock-frequency offset can also be determined. To eliminate the bias due to clock-frequency offset, a system and method to estimate the clock-frequency offset is also presented.
摘要翻译：用于估计两个设备之间的距离的系统和方法执行两个或更多个测距估计，其中使用相对于先前估计相位偏移的时钟执行后续估计。随后的估计允许由于有限时钟分辨率而降低的估计不确定性，并且可以产生具有较高置信度的范围估计。在一个实施例中，在设备中引入的n / N（对于n = 1，...，N-1，N> 1和正整数）时钟周期偏移量执行这些附加测距估计。可以使用多种方法实现时钟周期偏移，并且还可以确定由于相对时钟频率偏移而在器件中的时钟漂移的影响。为了消除由于时钟 - 频率偏移造成的偏差，还提出了一种用于估计时钟频率偏移的系统和方法。

6. 发明申请

US20060268891A1 Device synchronization on a communication network 有权
标题翻译：通信网络上的设备同步
公开(公告)号：US20060268891A1
公开(公告)日：2006-11-30
申请号：US11325763
申请日：2006-01-04
申请人： Ghobad Heidari-Bateni , Stanislaw Czaja
发明人： Ghobad Heidari-Bateni , Stanislaw Czaja
IPC分类号： H04L12/56
CPC分类号： H04W52/0216 , H04W28/26 , H04W56/00 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/22
摘要： A method to enable scheduling communications activities for an electronic communication device configured to communicate across a communication network is provided. The method comprises the steps of scheduling a communication activity during a scheduling window such that the communication activity is scheduled to occur toward the end of a communication window; entering a power-save mode after the scheduling step; and transitioning from the power-save mode prior to the scheduled communication activity. In one embodiment the method can further include a step of conducting the scheduled communication activity and transitioning back to the power-save mode after a next communication activity is scheduled or be implemented to allow the step of conducting the scheduled communication activity and transitioning back to the power-save mode at the end of the next communication window. In one embodiment the transitioning step comprises the steps of awakening from the power-save mode and synchronizing with the communication network, wherein synchronizing can comprise the step of synchronizing with electronic communication device associated with the communication network.
摘要翻译：提供了一种能够为配置为跨通信网络进行通信的电子通信设备调度通信活动的方法。该方法包括以下步骤：在调度窗口期间调度通信活动，使得调度在通信窗口的末端发生通信活动; 在调度步骤后进入省电模式; 并且在排定的通信活动之前从节电模式转换。在一个实施例中，该方法还可以包括执行调度的通信活动并在下一个通信活动被调度或被实现之后转换回节电模式的步骤，以允许进行调度的通信活动并转换回到节电模式在下一个通讯窗口的末尾。在一个实施例中，转换步骤包括从省电模式唤醒并与通信网络同步的步骤，其中同步可以包括与与通信网络相关联的电子通信设备同步的步骤。

7. 发明申请

US20120089005A1 Multi-Modal Medical Imaging and Type Detection 审中-公开
标题翻译：多模态医学成像和类型检测
公开(公告)号：US20120089005A1
公开(公告)日：2012-04-12
申请号：US13269842
申请日：2011-10-10
申请人： Rahim Bagheri , Ghobad Heidari-Bateni
发明人： Rahim Bagheri , Ghobad Heidari-Bateni
IPC分类号： A61B6/00
CPC分类号： A61B6/4417 , A61B5/0035 , A61B5/05 , A61B6/5247 , A61B8/4416
摘要： A multi-modal medical imaging and type detection have been described have been disclosed. By combining a broadband radio imaging system and one or more other modalities of image processing an enhanced image and/or tissue classification can be produced.
摘要翻译：已经公开了已经描述的多模态医学成像和类型检测。通过组合宽带无线电成像系统和一种或多种其它形式的图像处理，可以产生增强的图像和/或组织分类。

8. 发明授权

US08135427B2 Power save system and method 有权
标题翻译：省电系统和方法
公开(公告)号：US08135427B2
公开(公告)日：2012-03-13
申请号：US11671966
申请日：2007-02-06
申请人： Alaa Muqattash , Ghobad Heidari-Bateni
发明人： Alaa Muqattash , Ghobad Heidari-Bateni
IPC分类号： H04B7/00
CPC分类号： H04W52/0216 , H04W48/16 , H04W52/0229 , H04W56/00 , H04W84/12 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/22
摘要： According to an embodiment of the invention, a system and method to provide alignment of hibernation and active cycles is provided. When one device receives a beacon from one of its neighbors it can be implemented to check for the neighboring device's global cycle start countdown value and to compare it's global cycle start countdown value with its own. If the beacon from the neighboring device contains a global cycle start countdown value that is different from the device's own global cycle start countdown, the device can be implemented to check a predefined condition. For example, if a device's global cycle start time falls into the first half of a neighbor's global cycle, then the device changes its own global cycle start time to the global cycle start time of that neighbor. In another embodiment, if a device's global cycle start time falls into the first 256/K superframes of a neighbor's global cycle, then the device changes its own global cycle start time to the global cycle start time of that neighbor. In one embodiment, K can be the number of different global active cycle start times observed by the device.
摘要翻译：根据本发明的实施例，提供了提供休眠和活动周期对准的系统和方法。当一个设备从其邻居中的一个接收到信标时，可以实现它来检查相邻设备的全局周期开始倒计时值，并将其全局周期开始倒计时值与其本身进行比较。如果来自相邻设备的信标包含与设备自己的全局周期开始倒计时不同的全局周期开始倒计时值，则可以实现该设备以检查预定义的条件。例如，如果设备的全局周期开始时间落入邻居全局周期的前半部分，则设备将其自身的全局周期开始时间更改为该邻居的全局周期开始时间。在另一个实施例中，如果设备的全局周期开始时间落入邻居的全局周期的第一256 / K超帧，则设备将其自己的全局周期开始时间改变为该邻居的全局周期开始时间。在一个实施例中，K可以是器件观察到的不同的全局有效周期开始时间的数量。

9. 发明授权

US07792217B2 Method and system for channel estimation 有权
标题翻译：信道估计的方法和系统
公开(公告)号：US07792217B2
公开(公告)日：2010-09-07
申请号：US11694539
申请日：2007-03-30
申请人： Ghobad Heidari-Bateni , Abu Amanullah , Dumitru Mihai Ionescu
发明人： Ghobad Heidari-Bateni , Abu Amanullah , Dumitru Mihai Ionescu
IPC分类号： H04L27/06 , H04L7/00 , H04B1/00 , H04J3/00
CPC分类号： H04L25/0228 , H04L27/2656 , H04L27/2662
摘要： The present invention is directed to a system and method for channel estimation for a communication channel such as, for example, that found in a wireless communication network. One or more synchronization and channel estimate symbols can be combined to compute a refined channel estimate.
摘要翻译：本发明涉及用于诸如例如在无线通信网络中发现的通信信道的信道估计的系统和方法。一个或多个同步和信道估计符号可以被组合以计算精细的信道估计。

10. 发明授权

US07450069B2 Ranging system and method 有权
标题翻译：测距系统和方法
公开(公告)号：US07450069B2
公开(公告)日：2008-11-11
申请号：US11364522
申请日：2006-02-27
申请人： Ghobad Heidari-Bateni , Khawza Iftekhar-Uddin Ahmed
发明人： Ghobad Heidari-Bateni , Khawza Iftekhar-Uddin Ahmed
IPC分类号： G01S3/02 , G01S1/24 , G06F13/42 , H04L7/00
CPC分类号： G01S13/767
摘要： A system and method for estimating the range between two devices performs two or more ranging estimates with subsequent estimates performed using a clock that is offset in phase with respect to a prior estimate. The subsequent estimate allows estimate uncertainties due to a finite clock resolution to be reduced and can yield a range estimate with a higher degree of confidence. In one embodiment, these additional ranging estimates are performed at n/N (for n=1, . . . N−1, with N>1 and a positive integer) clock-period offset introduced in the device. The clock-period offset can be implemented using a number of approaches, and the effect of clock drift in the devices due to relative clock-frequency offset can also be determined. To eliminate the bias due to clock-frequency offset, a system and method to estimate the clock-frequency offset is also presented.
摘要翻译：用于估计两个设备之间的距离的系统和方法执行两个或更多个测距估计，其中使用相对于先前估计相位偏移的时钟执行后续估计。随后的估计允许由于有限时钟分辨率而导致的估计不确定性被降低，并且可以产生具有较高置信度的范围估计。在一个实施例中，在设备中引入的n / N（对于n = 1，...，N-1，N> 1和正整数）时钟周期偏移量执行这些附加测距估计。可以使用多种方法实现时钟周期偏移，并且还可以确定由于相对时钟频率偏移而在器件中的时钟漂移的影响。为了消除由于时钟 - 频率偏移造成的偏差，还提出了一种用于估计时钟频率偏移的系统和方法。

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