公开(公告)号：US08671128B1

公开(公告)日：2014-03-11

申请号：US11981847

申请日：2007-10-30

申请人： Hossein Dehghan ,  Karl Kowk Ho Yick ,  Sam Heidari

发明人： Hossein Dehghan ,  Karl Kowk Ho Yick ,  Sam Heidari

IPC分类号： G06F17/10 ,  H03H7/30 ,  H03H7/40 ,  H03K5/159

CPC分类号： H03H17/06 ,  H03H17/0223 ,  H03H17/0292 ,  H03H17/0294 ,  H04B1/71057

摘要： A finite impulse response filter (FIR) for processing a communication channel. The FIR comprises a delay line, a tap processor and a summer. The delay line has “N” taps to successive portions of the communication channel. The delay line shifts the successive portions of the communication channel once in each symbol processing interval. The tap processor subjects each of the “N” taps to a first scaling utilizing first scaling coefficients associated with filtering the current symbol interval and further subjects at least one of the “N” taps to a second scaling by a second scaling coefficient associated with filtering the prior symbol interval. The summer generates in each symbol interval a filtered output comprising a sum of the “N” scaled taps from the first scaling in the prior symbol interval and the second scaling of the at least one tap in the current symbol interval, thereby increasing an order of the FIR without corresponding increase in an order of the delay line.

摘要翻译： 一种用于处理通信信道的有限脉冲响应滤波器（FIR）。 FIR包括延迟线，抽头处理器和夏季。 延迟线对通信信道的连续部分具有“N”个抽头。 延迟线在每个符号处理间隔中移动通信信道的连续部分一次。 抽头处理器利用与滤波当前符号间隔相关联的第一缩放系数对“N”抽头中的每一个进行第一缩放，并且使“N”个抽头中的至少一个进行第二缩放，与通过滤波相关联的第二缩放系数 先前符号间隔。 夏天在每个符号间隔产生包括来自先前符号间隔中的第一缩放的“N”个标度的抽头和当前符号间隔中的至少一个抽头的第二缩放的滤波输出，从而增加 FIR没有相应增加延迟线的顺序。

公开(公告)号：US08462751B1

公开(公告)日：2013-06-11

申请号：US13466328

申请日：2012-05-08

申请人： Hossein Dehghan ,  Sam Heidari

发明人： Hossein Dehghan ,  Sam Heidari

IPC分类号： H04W4/00

CPC分类号： H04L12/1485 ,  H04L12/2803 ,  H04W16/04 ,  H04W16/14 ,  H04W84/12

摘要： A geolocation utilization manager for managing wireless local area networks (WLAN) each supporting wireless communications between an associated access point node and associated station nodes on a corresponding one of a plurality of communication channels. The geolocation utilization manager for aggregating channel utilization information from the WLANs, and consolidating channel usage between neighboring underutilized ones of the WLANs, thereby maximizing utilization of a shared channel between neighboring underutilized ones of the WLANs. Whereby underutilized neighboring WLANs otherwise utilizing unique channels instead share a single channel, thereby freeing up other communication channels across an available WiFi, IEEE 802.11 or other such spectrum.

摘要翻译： 一种用于管理无线局域网（WLAN）的地理位置利用管理器，每个无线局域网支持在多个通信信道中相应的一个通信信道上的相关接入点节点和相关联的站节点之间的无线通信。 地理位置利用管理器，用于聚合来自WLAN的信道利用信息，以及整合WLAN中相邻未充分利用的信道之间的信道使用，从而最大化在相邻的未充分利用的WLAN之间的共享信道的利用。 由于利用不足的相邻WLAN，否则利用唯一信道来共享单个信道，从而通过可用的WiFi，IEEE 802.11或其他此类频谱释放其他通信信道。

公开(公告)号：US08902769B1

公开(公告)日：2014-12-02

申请号：US13200639

申请日：2011-09-26

申请人： Hossein Dehghan ,  Safiali Rouhi ,  Sam Heidari

发明人： Hossein Dehghan ,  Safiali Rouhi ,  Sam Heidari

IPC分类号： H04W4/00 ,  H04L12/413 ,  G06F15/173 ,  H04B17/00 ,  H04W72/00 ,  H04B7/00 ,  H04L12/26 ,  H04W24/00

CPC分类号： H04L12/26 ,  H04L43/08 ,  H04W24/00

摘要： A wireless access point configured to support a wireless home network among multiple wireless devices contending with one another for access to a shared wireless communication medium. The wireless access point comprises a link monitor and a link manager. The link monitor monitors communication links with each of the wireless devices and for detects oversubscription of the wireless communication medium by the communication links. The link manager couples to the link monitor and is responsive to an oversubscription indication therefrom to arbitrate access to the shared wireless communication medium among the contending wireless devices.

摘要翻译： 一种无线接入点，被配置为支持在彼此竞争的多个无线设备之间的无线家庭网络以访问共享的无线通信介质。 无线接入点包括链路监视器和链路管理器。 链路监视器监视与每个无线设备的通信链路，并且用于通过通信链路检测无线通信介质的超额预订。 链路管理器耦合到链路监视器并且响应于其中的超额预订指示来仲裁在竞争无线设备之间对共享无线通信介质的访问。

公开(公告)号：US08767657B1

公开(公告)日：2014-07-01

申请号：US13506457

申请日：2012-04-19

申请人： Hossein Dehghan ,  Sam Heidari ,  Muhammad Abdelghaffar

发明人： Hossein Dehghan ,  Sam Heidari ,  Muhammad Abdelghaffar

IPC分类号： H04W4/00

CPC分类号： H04L25/03891 ,  H04B7/0413 ,  H04B7/0871 ,  H04L25/03178 ,  H04L27/2647 ,  H04L2025/03426 ,  H04W72/04 ,  H04W84/12

摘要： A wireless device with multiple antennae and configured to support orthogonal frequency-division multiplexed (OFDM), multiple-input multiple-output (MIMO) communications of a wireless local area network (LAN) among multiple wireless devices over a shared wireless communication medium on a shared communication channel. The wireless access device comprises: a mixed-mode MIMO detector configured to allocate a mix of linear and non-linear MIMO detectors among received OFDM sub-channels of the shared communication channel, thereby reducing a level of complexity associated with reception of MIMO streams exclusively via non-linear MIMO detectors.

摘要翻译： 一种具有多个天线并被配置为支持多个无线设备中的无线局域网（LAN）的无线局域网（LAN）的多输入多输出（MIMO）通信的无线设备，其通过共享无线通信介质在 共享通信渠道。 无线接入设备包括：混合模式MIMO检测器，被配置为在共享通信信道的接收的OFDM子信道中分配线性和非线性MIMO检测器的混合，从而降低与独占的MIMO流的接收相关联的复杂度 通过非线性MIMO检测器。

公开(公告)号：US08711741B1

公开(公告)日：2014-04-29

申请号：US11807006

申请日：2007-05-24

申请人： Sam Heidari ,  Hossein Dehghan ,  Sigurd Schelstraete

发明人： Sam Heidari ,  Hossein Dehghan ,  Sigurd Schelstraete

IPC分类号： H04J1/12 ,  H04J1/16 ,  H04B3/20 ,  H04J4/00 ,  H04L5/16

CPC分类号： H04B3/20 ,  H04B3/235 ,  H04B3/54 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0064 ,  H04L5/143 ,  H04L5/1461 ,  H04L27/265

摘要： Networked modems configurable to establish a communication system on a wired communication medium. Each modem includes: a network module, transmit and receive path modules and a frequency domain echo canceller. The network module is configured to communicate with network modules of remaining ones of the at least three modems to allocate bandwidth of the shared communications medium for at least two discrete point-to-point communication links between corresponding pairs of the at least three modems. The transmit and receive path modules are configured for multi-tone modulation and demodulation of communications on the wired communication medium and are responsive to the bandwidth allocation of the network module to concurrently process at least a first discrete point-to-point communication link with a first modem among remaining ones of the at least three modems and at least a second discrete point-to-point communication link with a second among remaining ones of the at least three modems. The frequency domain echo canceller is configured to substantially cancel leakage of the communications transmitted on the transmit path into the receive path and to enable each point-to-point communication link to support full duplex communications.

摘要翻译： 网络调制解调器可配置为在有线通信介质上建立通信系统。 每个调制解调器包括：网络模块，发射和接收路径模块和频域回波消除器。 所述网络模块被配置为与所述至少三个调制解调器中的剩余调制解调器的网络模块通信，以为所述至少三个调制解调器的相应对之间的至少两个离散点对点通信链路分配共享通信介质的带宽。 发送和接收路径模块被配置用于有线通信介质上的通信的多频调制和解调，并且响应于网络模块的带宽分配来同时处理至少第一离散点对点通信链路 所述至少三个调制解调器的剩余的调制解调器中的第一调制解调器和至少三个调制解调器的剩余的调制解调器中的至少一个的至少第二离散点对点通信链路中的第二调制解调器。 频域回波消除器被配置为基本上消除在发送路径上发送的通信到接收路径的泄漏，并且使得每个点对点通信链路能够支持全双工通信。

公开(公告)号：US06782043B1

公开(公告)日：2004-08-24

申请号：US09484630

申请日：2000-01-18

申请人： Hossein Dehghan ,  Dariush Dabiri ,  Jing Li

发明人： Hossein Dehghan ,  Dariush Dabiri ,  Jing Li

IPC分类号： H04B1700

CPC分类号： H04B3/46

摘要： A method and apparatus for estimating the length of a transmission line is provided. The transmission line extends between a transmitter and a receiver and has a low-pass filter characteristic and an impulse response. The method and apparatus receive a data signal from the transmission line at the receiver and estimate the length of the transmission line as a function of the received data signal and the impulse response.

摘要翻译： 提供了一种用于估计传输线的长度的方法和装置。 传输线在发射机和接收机之间延伸，具有低通滤波器特性和脉冲响应。 该方法和装置从接收机处的传输线路接收数据信号，并根据接收的数据信号和脉冲响应估计传输线路的长度。

公开(公告)号：US07502390B2

公开(公告)日：2009-03-10

申请号：US10696912

申请日：2003-10-30

申请人： Jun Lu ,  Hossein Dehghan ,  Xi Huang

发明人： Jun Lu ,  Hossein Dehghan ,  Xi Huang

IPC分类号： H04J3/04

CPC分类号： H04L1/0071 ,  H03M13/2728 ,  H03M13/2732 ,  H03M13/6502

摘要： An apparatus comprising an input circuit, a storage circuit and an output circuit. The input circuit may be configured to generate a plurality of data paths in response to an input data signal having a plurality of data items sequentially presented in a first order. The storage circuit may be configured to store each of the data paths in a respective shift register chain. The output circuit may be configured to generate an output data signal in response to each of the shift register chains. The output data signal presents the data items in a second order different from said first order.

摘要翻译： 一种包括输入电路，存储电路和输出电路的装置。 输入电路可以被配置为响应于具有以一级顺序呈现的多个数据项的输入数据信号来生成多个数据路径。 存储电路可以被配置为将每个数据路径存储在相应的移位寄存器链中。 输出电路可以被配置为响应于每个移位寄存器链产生输出数据信号。 输出数据信号以与所述第一级不同的第二级呈现数据项。

公开(公告)号：US06275087B1

公开(公告)日：2001-08-14

申请号：US09441250

申请日：1999-11-16

申请人： Hossein Dehghan

发明人： Hossein Dehghan

IPC分类号： H03L500

CPC分类号： H04L25/062 ,  H04L25/064

摘要： A DC drift canceller circuit is disclosed. The circuit includes a decision device including an input and an output and a first adder configured to received the input and the output of the decision device. The first adder produces an error signal indicative of the difference between the input and output of the decision device. A noise filter of the circuit is configured to receive the error signal. A second adder of the circuit includes a first input coupled to the input of the canceller circuit and a second input coupled to the output of the noise filter such that the output of the second adder is substantially free of any DC drift component of the input signal. The output of the second adder is coupled to the input of the decision device. In one embodiment, the decision device comprises a slicer. In one embodiment, the noise filter comprises a low pass filter. The low pass filter may includes a first multiplier with an input configured to receive the error signal, a third adder circuit with a first input connected to the output of the first multiplier and a second input connected to the output of a delay circuit, and a second multiplier with an input connected to the output of the third adder and an output connected to the delay circuit. In another embodiment, the noise filter may comprise an integrator that includes a multiplier with an input configured to receive the error signal and a third adder circuit with a first input connected to the output of the multiplier and a second input connected to a delay circuit. The input of the delay circuit is connected to the output of the adder circuit and the output of the noise filter.

摘要翻译： 公开了一种DC漂移消除器电路。 该电路包括一个包括一个输入和一个输出的判定装置和一个被配置为接收决策装置的输入和输出的第一加法器。 第一加法器产生指示判决装置的输入和输出之间的差异的误差信号。 电路的噪声滤波器被配置为接收误差信号。 电路的第二加法器包括耦合到消除器电路的输入的第一输入和耦合到噪声滤波器的输出的第二输入，使得第二加法器的输出基本上没有输入信号的任何DC漂移分量 。 第二加法器的输出耦合到判定装置的输入端。 在一个实施例中，判定装置包括限幅器。 在一个实施例中，噪声滤波器包括低通滤波器。 低通滤波器可以包括具有被配置为接收误差信号的输入的第一乘法器，具有连接到第一乘法器的输出的第一输入的第三加法器电路和连接到延迟电路的输出的第二输入，以及 第二乘法器，具有连接到第三加法器的输出的输入端和连接到延迟电路的输出。 在另一实施例中，噪声滤波器可以包括积分器，其包括具有被配置为接收误差信号的输入的乘法器和具有连接到乘法器的输出的第一输入的第三加法器电路和连接到延迟电路的第二输入。 延迟电路的输入连接到加法器电路的输出端和噪声滤波器的输出端。

公开(公告)号：US20050094677A1

公开(公告)日：2005-05-05

申请号：US10696912

申请日：2003-10-30

申请人： Jun Lu ,  Hossein Dehghan ,  Xi Huang

发明人： Jun Lu ,  Hossein Dehghan ,  Xi Huang

IPC分类号： H03M13/27 ,  H04J3/04 ,  H04L1/00

CPC分类号： H04L1/0071 ,  H03M13/2728 ,  H03M13/2732 ,  H03M13/6502

摘要： An apparatus comprising an input circuit, a storage circuit and an output circuit. The input circuit may be configured to generate a plurality of data paths in response to an input data signal having a plurality of data items sequentially presented in a first order. The storage circuit may be configured to store each of the data paths in a respective shift register chain. The output circuit may be configured to generate an output data signal in response to each of the shift register chains. The output data signal presents the data items in a second order different from said first order.

摘要翻译： 一种包括输入电路，存储电路和输出电路的装置。 输入电路可以被配置为响应于具有以一级顺序呈现的多个数据项的输入数据信号来生成多个数据路径。 存储电路可以被配置为将每个数据路径存储在相应的移位寄存器链中。 输出电路可以被配置为响应于每个移位寄存器链产生输出数据信号。 输出数据信号以与所述第一级不同的第二级呈现数据项。

公开(公告)号：US06584151B1

公开(公告)日：2003-06-24

申请号：US09439126

申请日：1999-11-12

申请人： Hossein Dehghan ,  Ting-Yin Chen

发明人： Hossein Dehghan ,  Ting-Yin Chen

IPC分类号： H03H730

CPC分类号： H04L25/03006 ,  H04L2025/03694

摘要： An adaptive equalizer for use in a communication receiver that prevents equalizer operation divergence in response to slicer errors in a high noise communication application. The equalizer uses the difference between an equalized sample value and the nearest constellation point determined by the slicer both as the equalizer adaptation value and as a control value to selectively enable or minimize (disable) adaptation modifications. The difference is compared to a threshold value to determine whether the difference should be applied to the equalizer for adaptation purposes or a minimal value to prevent equalizer divergence in response to significant slicer errors. The threshold value is determined as a function of the ratio of the probability of correct slicer determinations and the probability of incorrect slicer determinations for a given sample value and a given signal to noise ratio. The threshold value may be predetermined as a constant for a particular communication application or may be dynamically computed as communications proceed.

摘要翻译： 一种在通信接收机中使用的自适应均衡器，其防止响应于高噪声通信应用中的限幅器误差的均衡器操作发散。 均衡器使用均衡采样值和由限幅器确定的最近的星座点之间的差作为均衡器适配值，并且作为控制值来选择性地使能或最小化（禁用）适配修改。 将该差异与阈值进行比较以确定该差异是否应当应用于均衡器以用于适应目的，或者是最小值以防止响应于显着的限幅器误差的均衡器发散。 根据给定采样值和给定的信噪比对正确的限幅器确定概率与不正确的限幅器确定的概率的比值确定阈值。 阈值可以预定为特定通信应用的常数，或者可以在通信进行时被动态地计算。