公开(公告)号：US09621330B2

公开(公告)日：2017-04-11

申请号：US13436046

申请日：2012-03-30

申请人： Iason Vassiliou ,  Michael Boers ,  Sean Nicolson ,  Brima Ibrahim ,  Spyridon Kavvadias

发明人： Iason Vassiliou ,  Michael Boers ,  Sean Nicolson ,  Brima Ibrahim ,  Spyridon Kavvadias

IPC分类号： H04B17/00 ,  H04L5/14 ,  H04L27/02 ,  H04L27/36

CPC分类号： H04B1/56 ,  H04B1/26 ,  H04B17/13 ,  H04B17/14 ,  H04B17/21 ,  H04L5/143 ,  H04L5/1461 ,  H04L27/02 ,  H04L27/368

摘要： A communication system includes a conversion module configured to convert a signal between a radio frequency baseband (RF-BB) and an intermediate frequency (IF). At least one RF front-end module converts the signal between the IF and a radio frequency (RF). The RF front-end module is configured as an RF phased array and includes a coaxial interconnect configured to connect the conversion module with the RF front-end module. The signal is transmitted between the conversion module and the RF-front end module via the coaxial interconnect. At least one RF front-end module includes an active front-end (AFE) configured to allow the signal to be transmitted via the coaxial interconnect while minimizing any deterioration of the signal.

公开(公告)号：US08805277B2

公开(公告)日：2014-08-12

申请号：US12502793

申请日：2009-07-14

申请人： Brima Ibrahim ,  Raymond Hayes ,  Jeyhan Karaoguz ,  John Walley ,  Saishankar Nandagopalan ,  Robert Hulvey ,  Shawn Ding ,  Christopher Hansen

发明人： Brima Ibrahim ,  Raymond Hayes ,  Jeyhan Karaoguz ,  John Walley ,  Saishankar Nandagopalan ,  Robert Hulvey ,  Shawn Ding ,  Christopher Hansen

IPC分类号： H04B7/00

CPC分类号： H04W52/267 ,  H04W52/16 ,  H04W52/242

摘要： Aspects of a method and system for Bluetooth 802.11 alternate MAC/PHY (AMP) transmit power control (TPC) may include one or more processors, receiver circuits and/or transmitter circuits that are operable to determine a maximum input level based on signals received via a Bluetooth basic rate (BR) connection and/or via a Bluetooth extended data rate (EDR) connection. The processors and/or circuits may be operable to determine a transmitted signal power level based on the determined maximum input level. The processors and/or circuits may be operable to transmit subsequent signals via a distinct Bluetooth connection based on the determined transmitted signal power level. The data rate for signal transmission via the distinct Bluetooth connection may exceed the data rate for signal transmission via the BR connection and the data rate for signal transmission via the EDR connection.

摘要翻译： 用于蓝牙802.11备用MAC / PHY（AMP）发射功率控制（TPC）的方法和系统的方面可以包括一个或多个处理器，接收机电路和/或发射机电路，其可操作以基于接收的信号确定最大输入电平 蓝牙基本速率（BR）连接和/或通过蓝牙扩展数据速率（EDR）连接。 处理器和/或电路可以用于基于所确定的最大输入电平来确定发射信号功率电平。 处理器和/或电路可以用于基于所确定的发射信号功率电平经由不同的蓝牙连接发送后续信号。 通过不同的蓝牙连接进行信号传输的数据速率可能会超过通过BR连接进行信号传输的数据速率和通过EDR连接进行信号传输的数据速率。

公开(公告)号：US20130109422A1

公开(公告)日：2013-05-02

申请号：US13287936

申请日：2011-11-02

申请人： Hongyu Xie ,  Srikanth Shubhakoti ,  Matthew James Fischer ,  Shawn Shiliang Ding ,  Gang Lu ,  Yuan Zhuang ,  Brima Ibrahim ,  Payam Torab Jahromi

发明人： Hongyu Xie ,  Srikanth Shubhakoti ,  Matthew James Fischer ,  Shawn Shiliang Ding ,  Gang Lu ,  Yuan Zhuang ,  Brima Ibrahim ,  Payam Torab Jahromi

IPC分类号： H04W72/04

CPC分类号： H04W72/0446 ,  H04L5/0092 ,  H04W72/1268 ,  H04W72/1289

摘要： Techniques for localized dynamic channel allocation help meet the challenges of latency, memory size, and channel time optimization for wireless communication systems. As examples, advanced communication standards, such as the WiGig standard, may support wireless docking station capability and wireless streaming of high definition video content between transmitting and receiving stations, or engage in other very high throughput tasks. The techniques help to deliver the desired user experience in such an environment and address the need to meet latency and throughput requirements while limiting memory footprint.

摘要翻译： 用于本地化动态信道分配的技术有助于应对无线通信系统的延迟，存储器大小和信道时间优化的挑战。 作为示例，诸如WiGig标准的高级通信标准可以支持发射站和接收站之间的高清晰度视频内容的无线对接站能力和无线流，或者参与其它非常高的吞吐量任务。 这些技术有助于在这样的环境中提供所需的用户体验，并解决了在限制内存占用的同时满足延迟和吞吐量要求的需求。

公开(公告)号：US08345704B2

公开(公告)日：2013-01-01

申请号：US11950559

申请日：2007-12-05

申请人： Prasanna Desai ,  Brima Ibrahim ,  John Walley ,  Gang Lu

发明人： Prasanna Desai ,  Brima Ibrahim ,  John Walley ,  Gang Lu

IPC分类号： H04L12/40

CPC分类号： H04B1/0067 ,  H04B1/0064 ,  H04B1/0475 ,  H04B1/40 ,  H04W72/02 ,  H04W88/06

摘要： Aspects of a method and system for multi-radio coexistence and a collaborative interface may include exchanging information between a plurality of radio transceivers integrated within a single device to enable coexistence, and coordinating sharing of transmit and receive resources between the plurality of radio transceivers by controlling access to the transmit and receive resources, where any one of the plurality of radio transceivers may be enabled to be selected to control the access based on the exchanged information. Selecting one of the radio transceivers for the controlling of the access band may be based on processing capability or priority of communication. The resources may comprise frequency bands, time slots, and antenna access. The information may be exchanged via a serial bus between the plurality of radio transceivers, where the serial bus may conform to an I2C (I-square-C) multi-master serial bus. Each of the radio transceivers may conform to one or more radio frequency technology.

摘要翻译： 用于多无线电共存和协作接口的方法和系统的方面可以包括在集成在单个设备内的多个无线电收发器之间交换信息以实现共存，以及通过控制来协调多个无线电收发器之间的发送和接收资源的共享 访问发送和接收资源，其中可以使多个无线收发器中的任一个能够被选择以基于所交换的信息来控制访问。 选择用于控制接入频带的无线电收发机之一可以基于处理能力或通信的优先级。 资源可以包括频带，时隙和天线接入。 信息可以通过串行总线在多个无线电收发器之间交换，其中串行总线可以符合I2C（I-square-C）多主机串行总线。 每个无线电收发器可以符合一个或多个射频技术。

公开(公告)号：US20120309325A1

公开(公告)日：2012-12-06

申请号：US13314277

申请日：2011-12-08

申请人： Nick Carbone ,  Sean Nicolson ,  Koji Kimura ,  Brima Ibrahim ,  Jason A. Trachewsky

发明人： Nick Carbone ,  Sean Nicolson ,  Koji Kimura ,  Brima Ibrahim ,  Jason A. Trachewsky

IPC分类号： H04B1/38 ,  H04B1/26

CPC分类号： H04B1/40

摘要： Disclosed are various embodiments for an extremely high frequency transceiver employing a baseband module and a radio-frequency module. The baseband module and the radio-frequency module are connected by a coaxial cable. The coaxial cable carries a multiplexed signal that may include a direct current component, a clock reference, a control signal, and an intermediate frequency signal. The control signal encodes one or more commands for controlling the operation of the radio-frequency module. Multiple radio-frequency modules may be employed in some embodiments.

摘要翻译： 公开了采用基带模块和射频模块的极高频收发器的各种实施例。 基带模块和射频模块通过同轴电缆连接。 同轴电缆承载可包括直流分量，时钟参考，控制信号和中频信号的复用信号。 控制信号编码用于控制射频模块的操作的一个或多个命令。 在一些实施例中可以采用多个射频模块。

公开(公告)号：US20120003942A1

公开(公告)日：2012-01-05

申请号：US12878771

申请日：2010-09-09

申请人： Norbert Grunert ,  Brima Ibrahim ,  Siukai Mak ,  Hea Joung Kim ,  Amir Ibrahim ,  Thomas Baker

发明人： Norbert Grunert ,  Brima Ibrahim ,  Siukai Mak ,  Hea Joung Kim ,  Amir Ibrahim ,  Thomas Baker

IPC分类号： H04W24/00

CPC分类号： H04W16/14 ,  H04W72/082

摘要： In a radio comprising a transmitter and a receiver, transmission and reception of signals may be controlled based on received signal strength measurements from a signal strength indicator module and transmitted signal strength measurements from the signal strength indicator module. For the transmitted signal strength measurements, the shared signal strength indicator module may measure signal strength of a signal output by a power amplifier. For the received signal strength measurements, the shared signal strength indicator module may measure signal strength of a received signal. A capacitance coupled to an output of the power amplifier may be configured based on a frequency of the signal output by the power amplifier. A gain of the power amplifier may be controlled based on the transmitted signal strength measurements. For the transmitted signal strength measurements, an analog-to-digital converter may process the signal output by the power amplifier.

摘要翻译： 在包括发射机和接收机的无线电设备中，可以基于来自信号强度指示器模块的接收信号强度测量值和来自信号强度指示器模块的发射信号强度测量值来控制信号的发送和接收。 对于发射信号强度测量，共享信号强度指示器模块可以测量由功率放大器输出的信号的信号强度。 对于接收的信号强度测量，共享信号强度指示器模块可以测量接收信号的信号强度。 可以基于由功率放大器输出的信号的频率来配置耦合到功率放大器的输出的电容。 功率放大器的增益可以基于传输的信号强度测量来控制。 对于发射信号强度测量，模数转换器可以处理由功率放大器输出的信号。

公开(公告)号：US08081929B2

公开(公告)日：2011-12-20

申请号：US12133637

申请日：2008-06-05

申请人： Brima Ibrahim ,  Alireza Zolfaghari ,  Steven Hall ,  Kambiz Shoarinejad ,  Bojko Marholev

发明人： Brima Ibrahim ,  Alireza Zolfaghari ,  Steven Hall ,  Kambiz Shoarinejad ,  Bojko Marholev

IPC分类号： H04B1/00 ,  H04B15/00 ,  H04B17/00 ,  H04B1/10

CPC分类号： H04B1/1036 ,  H04B1/30

摘要： Methods and systems for optimal frequency planning for an integrated communication system with multiple receivers may include adjusting a center frequency of a low IF signal to reduce interference by a second order interference signal. The center frequency may be adjusted to avoid high power portions of the second order interference signal. The interference level corresponding to a center frequency may be determined by, for example, a SNR of the low IF signal, or by determining a BER for the low IF signal. The center frequency of the low IF signal may be dynamically adjusted to keep second order interference level at an acceptable level. Adjusting the center frequency of the low IF signal may also comprise keeping the low IF signal from being blocked by a DC component of the second order interference signal.

摘要翻译： 用于具有多个接收机的集成通信系统的最佳频率规划的方法和系统可以包括调整低IF信号的中心频率以减少二阶干扰信号的干扰。 可以调整中心频率以避免二阶干扰信号的高功率部分。 对应于中心频率的干扰电平可以通过例如低IF信号的SNR或通过确定低IF信号的BER来确定。 可以动态地调整低IF信号的中心频率以将二阶干扰电平保持在可接受的水平。 调整低IF信号的中心频率还可以包括保持低IF信号被二阶干扰信号的DC分量阻挡。

公开(公告)号：US08081714B2

公开(公告)日：2011-12-20

申请号：US10989536

申请日：2004-11-16

申请人： Brima Ibrahim ,  Hea Joung Kim ,  Henrik Tholstrup Jensen ,  Paul Lettieri ,  Siukai Mak

发明人： Brima Ibrahim ,  Hea Joung Kim ,  Henrik Tholstrup Jensen ,  Paul Lettieri ,  Siukai Mak

IPC分类号： H04L27/00

CPC分类号： H03D3/006

摘要： Methods and systems for processing an RF signal are disclosed herein. Aspects of the method may comprise utilizing a single input CORDIC and a single output CORDIC for synchronizing and demodulating a received signal, wherein the received signal may comprise one or more bit rates. The received signal may comprise a one megabit per second (Mbps) signal. The single input CORDIC may be configured to operate in a rotating mode and the single output CORDIC may be configured to operate in a rotating mode and/or an arctangent (ARCTAN) mode. A rotated output of the single input CORDIC may be correlated with a phase shift keying (PSK) synchronization (sync) word and a portion of the correlated rotated output of the single input CORDIC may be buffered.

摘要翻译： 本文公开了用于处理RF信号的方法和系统。 该方法的方面可以包括利用单个输入CORDIC和单个输出CORDIC来同步和解调所接收的信号，其中所接收的信号可以包括一个或多个比特率。 所接收的信号可以包括一兆兆比特每秒（Mbps）信号。 单输入CORDIC可以被配置为以旋转模式操作，并且单输出CORDIC可以被配置为在旋转模式和/或反正切（ARCTAN）模式下操作。 单输入CORDIC的旋转输出可以与相移键控（PSK）同步（sync）字相关，并且单个输入CORDIC的相关旋转输出的一部分可以被缓冲。

公开(公告)号：US20110294432A1

公开(公告)日：2011-12-01

申请号：US13206035

申请日：2011-08-09

申请人： Prasanna Desai ,  Sven Jerlhagen ,  Brima Ibrahim ,  Siukai Mak ,  Asif Grushkevich ,  John Walley

发明人： Prasanna Desai ,  Sven Jerlhagen ,  Brima Ibrahim ,  Siukai Mak ,  Asif Grushkevich ,  John Walley

IPC分类号： H04B7/00

CPC分类号： H04B1/715 ,  H04B2001/7154 ,  H04W28/04 ,  H04W84/18

摘要： A method for frequency selection in a wireless communication system, includes performing in a wireless device, receiving at least one signal at a current frequency; processing at least one data packet received via the received at least one signal to determine the presence of bit errors; characterizing the received at least one signal received at the current frequency based on the processing of the at least one data packet; classifying the current frequency based on at least the characterization of the received at least one signal; and selecting the current frequency based on the classification. At least one signal strength measurement may be performed on the received at least one signal, and the processing of the at least one data packet may be performed within a current channel classification update interval.

摘要翻译： 一种在无线通信系统中进行频率选择的方法，包括在无线设备中执行以当前频率接收至少一个信号; 处理经由所接收的至少一个信号接收的至少一个数据分组，以确定位错误的存在; 基于所述至少一个数据分组的处理来表征所接收的以当前频率接收的至少一个信号; 至少基于所接收的至少一个信号的特征来对当前频率进行分类; 并根据分类选择当前频率。 可以对所接收的至少一个信号执行至少一个信号强度测量，并且可以在当前信道分类更新间隔内执行至少一个数据分组的处理。

公开(公告)号：US08050647B2

公开(公告)日：2011-11-01

申请号：US12563765

申请日：2009-09-21

申请人： Brima Ibrahim ,  Hea Joung Kim ,  Henrik Tholstrup Jensen

发明人： Brima Ibrahim ,  Hea Joung Kim ,  Henrik Tholstrup Jensen

IPC分类号： H04B1/20

CPC分类号： H03J7/02 ,  H03J2200/02 ,  H04L25/063 ,  H04L27/142 ,  H04L2027/0057 ,  H04L2027/0065

摘要： In RF transceivers, a method and a system for a frequency feedback adjustment in digital receivers are provided. A DC offset may result from the difference in frequencies between an RF transmitter and an RF receiver. An adjustment of the receiver's frequency may be implemented after synchronization occurs and may be performed by, for example, utilizing a header portion of a packet communicated via a wireless interface. The adjustment may be performed when the frequency difference exceeds a threshold value. In another aspect, adjusting the frequency of the RF receiver may be performed by modifying and/or changing a phase locked loop (PLL) trimmer register. This approach may allow an RF receiver to operate, in some instances, without the need for an equalizer. In this regard, the power consumed by the RF receiver may be minimized and/or the overall cost of the RF receiver may be reduced.

摘要翻译： 在RF收发器中，提供了用于数字接收机中的频率反馈调整的方法和系统。 DC偏移可能由RF发射机和RF接收机之间的频率差引起。 接收机频率的调整可以在同步发生之后实现，并且可以通过例如利用经由无线接口传送的分组的报头部分来执行。 当频率差超过阈值时，可以进行调整。 在另一方面，可以通过修改和/或改变锁相环（PLL）微调寄存器来调整RF接收机的频率。 这种方法可以允许RF接收机在某些情况下操作，而不需要均衡器。 在这方面，RF接收机消耗的功率可以被最小化，和/或可以降低RF接收机的总体成本。