公开(公告)号：US08260145B2

公开(公告)日：2012-09-04

申请号：US12403332

申请日：2009-03-12

申请人： Deepnarayan Gupta ,  Oleg Mukhanov

发明人： Deepnarayan Gupta ,  Oleg Mukhanov

IPC分类号： H04B10/00

CPC分类号： H04B10/25752 ,  H04B10/2575 ,  H04B10/40 ,  H04B10/5561 ,  H04B10/697 ,  H04L27/2096

摘要： A transceiver architecture for wireless base stations wherein a broadband radio frequency signal is carried between at least one tower-mounted unit and a ground-based unit via optical fibers, or other non-distortive media, in either digital or analog format. Each tower-mounted unit (for both reception and transmission) has an antenna, analog amplifier and an electro-optical converter. The ground unit has ultrafast data converters and digital frequency translators, as well as signal linearizers, to compensate for nonlinear distortion in the amplifiers and optical links in both directions. In one embodiment of the invention, at least one of the digital data converters, frequency translators, and linearizers includes superconducting elements mounted on a cryocooler.

公开(公告)号：US08260144B2

公开(公告)日：2012-09-04

申请号：US12403329

申请日：2009-03-12

申请人： Deepnarayan Gupta ,  Oleg Mukhanov ,  Richard E. Hitt

发明人： Deepnarayan Gupta ,  Oleg Mukhanov ,  Richard E. Hitt

IPC分类号： H04B10/00

CPC分类号： H04B10/25752 ,  H04B10/2575 ,  H04B10/40 ,  H04B10/5561 ,  H04B10/697 ,  H04L27/2096

摘要： A transceiver architecture for wireless base stations wherein a broadband radio frequency signal is carried between at least one tower-mounted unit and a ground-based unit via optical fibers, or other non-distortive media, in either digital or analog format. Each tower-mounted unit (for both reception and transmission) has an antenna, analog amplifier and an electro-optical converter. The ground unit has ultrafast data converters and digital frequency translators, as well as signal linearizers, to compensate for nonlinear distortion in the amplifiers and optical links in both directions. In one embodiment of the invention, at least one of the digital data converters, frequency translators, and linearizers includes superconducting elements mounted on a cryocooler.

公开(公告)号：US20090232191A1

公开(公告)日：2009-09-17

申请号：US12403332

申请日：2009-03-12

申请人： Deepnarayan Gupta ,  Oleg Mukhanov

发明人： Deepnarayan Gupta ,  Oleg Mukhanov

IPC分类号： H04L27/00 ,  H04B1/40

CPC分类号： H04B10/25752 ,  H04B10/2575 ,  H04B10/40 ,  H04B10/5561 ,  H04B10/697 ,  H04L27/2096

摘要： A transceiver architecture for wireless base stations wherein a broadband radio frequency signal is carried between at least one tower-mounted unit and a ground-based unit via optical fibers, or other non-distortive media, in either digital or analog format. Each tower-mounted unit (for both reception and transmission) has an antenna, analog amplifier and an electro-optical converter. The ground unit has ultrafast data converters and digital frequency translators, as well as signal linearizers, to compensate for nonlinear distortion in the amplifiers and optical links in both directions. In one embodiment of the invention, at least one of the digital data converters, frequency translators, and linearizers includes superconducting elements mounted on a cryocooler.

摘要翻译： 一种用于无线基站的收发机架构，其中宽带射频信号通过光纤或数字或模拟格式的光纤或其他非失真媒介在至少一个塔式安装单元和基于地面的单元之间承载。 每个塔式装置（用于接收和传输）都具有天线，模拟放大器和电光转换器。 地面单元具有超快数据转换器和数字频率转换器以及信号线性化器，以补偿放大器和光学链路在两个方向上的非线性失真。 在本发明的一个实施例中，至少一个数字数据转换器，频率转换器和线性化器包括安装在低温冷却器上的超导元件。

公开(公告)号：US20090047023A1

公开(公告)日：2009-02-19

申请号：US11665261

申请日：2005-10-27

申请人： Christopher Ralph Pescod ,  Mohammed Nawaz ,  Clive William Miller

发明人： Christopher Ralph Pescod ,  Mohammed Nawaz ,  Clive William Miller

IPC分类号： H04B10/00

CPC分类号： H04B10/25753 ,  H04B10/25752

摘要： A base station is provided for communicating data to a mobile terminal unit by means of at least one antenna unit, wherein the at least one antenna unit is linked to the base station by means of at least one optical fibre and the at least one antenna unit is operable to communicate wirelessly with the mobile terminal unit. The base station comprises an optical transmitter for transmitting modulated data signals to the at least one antenna unit for wireless transmission, an optical receiver for receiving modulated data signals forwarded by the at least one antenna unit and a demodulator for demodulating received modulated data signals. The optical transmitter comprises a first optical modulator arranged to modulate an optical carrier with a radio frequency oscillator signal to generate an optical oscillator signal, a second optical modulator, coupled optically to the first optical modulator, operable to modulate the optical oscillator signal with an input data signal of a predetermined frequency to generate a downlink optical data signal and an optical output for directing the downlink optical data signal to the at least one antenna unit by means of the at least one optical fibre.

摘要翻译： 提供了一种基站，用于借助于至少一个天线单元向移动终端单元传送数据，其中所述至少一个天线单元通过至少一个光纤链接到所述基站，并且所述至少一个天线单元 可操作地与移动终端单元进行无线通信。 该基站包括用于将调制数据信号发送到至少一个用于无线传输的天线单元的光发射机，用于接收由至少一个天线单元转发的调制数据信号的光接收机和用于解调所接收的调制数据信号的解调器。 光发射机包括第一光调制器，其布置成用射频振荡器信号调制光载波以产生光振荡器信号，第二光调制器，光耦合到第一光调制器，可操作以用输入调制光振荡器信号 数据信号，以产生下行光学数据信号;以及光输出，用于通过所述至少一个光纤将所述下行链路光数据信号引导到所述至少一个天线单元。

公开(公告)号：US20080232799A1

公开(公告)日：2008-09-25

申请号：US12153755

申请日：2008-05-23

申请人： A-Jung Kim

发明人： A-Jung Kim

IPC分类号： H04B10/24 ,  H04J14/00

CPC分类号： H04B10/25752

摘要： An apparatus and method for enabling cost-effective duplex communication by diplexing one of down stream signals for frequency up-conversion in a hybrid fiber-radio system includes diplexing an unmodulated mode signal among beating signals between a master laser and an injection-locked slave laser and using the diplexed signal for down-conversion in upstream transmission, thereby eliminating the need for expensive high-frequency local oscillators for frequency conversion. Higher radio frequency signals can be generated using beating between basic modes and satellite modes such as FWM conjugates of the master laser and slave laser. Cost-effective systems, stabilization of a light source and improved transmission performance may be achieved by using a diplexer instead of an expensive high-frequency local oscillator.

摘要翻译： 一种用于通过在混合光纤无线电系统中将用于上变频的下行信号中的一个双工而实现经济有效的双工通信的装置和方法包括在主激光器和注入锁定的从属激光器之间的跳动信号之间复合未调制的模式信号 并且在上行传输中使用双工信号进行下变频，从而不需要用于频率转换的昂贵的高频本地振荡器。 可以使用基本模式和卫星模式之间的跳动来产生更高的射频信号，例如主激光器和从激光器的FWM共轭。 可以通过使用双工器代替昂贵的高频本地振荡器来实现成本有效的系统，光源的稳定和改进的传输性能。

公开(公告)号：US20070285239A1

公开(公告)日：2007-12-13

申请号：US11451237

申请日：2006-06-12

申请人： Martyn N. Easton ,  Michael Sauer

发明人： Martyn N. Easton ,  Michael Sauer

IPC分类号： G08B13/14

CPC分类号： G06K19/0723 ,  G06K7/0008 ,  G06K19/0728 ,  H04B10/25752

摘要： The optical-fiber-based radio-frequency identification (RFID) system includes one or multiple RFID readers optically coupled to one or more transponders via respective one or more optical fiber RF communication links. The transponders are each adapted to receive electromagnetic RF tag signals from RFID tags within the associated picocell and transmit optical RF tag signals to the corresponding RFID reader over the corresponding optical fiber RF communication link. The RFID reader then converts the optical RF tag signals to electrical RFID tag signals, and extracts the RFID tag information from the RFID tag signals. The transponders can be arranged spaced apart along the length of one or more optical fiber cables made up of pairs of downlink and uplink optical fibers that constitute the optical fiber RF communication links.

摘要翻译： 基于光纤的射频识别（RFID）系统包括经由相应的一个或多个光纤RF通信链路光耦合到一个或多个转发器的一个或多个RFID读取器。 应答器各自适于从相关联的微微小区内的RFID标签接收电磁RF标签信号，并且通过相应的光纤RF通信链路将光学RF标签信号发射到对应的RFID读取器。 然后，RFID读取器将光学RF标签信号转换为电子RFID标签信号，并从RFID标签信号中提取RFID标签信息。 应答器可以沿着由构成光纤RF通信链路的下行链路和上行链路光纤组成的一根或多根光纤电缆的长度间隔布置。

公开(公告)号：US07136426B2

公开(公告)日：2006-11-14

申请号：US10020164

申请日：2001-12-18

申请人： Minoru Okada ,  Yutaka Aoki ,  Manabu Sawada ,  Masahiro Kuwabara ,  Hiroshi Harada ,  Masayuki Fujise

发明人： Minoru Okada ,  Yutaka Aoki ,  Manabu Sawada ,  Masahiro Kuwabara ,  Hiroshi Harada ,  Masayuki Fujise

IPC分类号： H04L27/12 ,  H04L12/24 ,  H04L5/14

CPC分类号： H04L27/08 ,  H04B10/25752 ,  H04L27/10

摘要： A vehicle-vehicle communication system includes an in-vehicle wire LAN established in a vehicle. The in-vehicle wire LAN includes a plurality of devices connected by optical fiber links. A terminal for radio vehicle-vehicle communication is connected to the in-vehicle wire LAN by the optical fiber link. The terminal receives an optical digital signal in a predetermined format from the in-vehicle wire LAN. The terminal includes a light controlled oscillator and applies the received optical signal to the light controlled oscillator. The light controlled oscillator outputs a transmission signal of a frequency shifted from a predetermined frequency according to the intensity of the applied optical signal. Thus the terminal generates the transmission signal using FSK-modulation technique without converting the format of the optical signal into another format. The transmission signal is transmitted to a device in another vehicle via radio waves.

公开(公告)号：US06975780B2

公开(公告)日：2005-12-13

申请号：US10764021

申请日：2004-01-23

申请人： Bernhard Stegmüller

发明人： Bernhard Stegmüller

IPC分类号： H01Q9/28 ,  H04B10/2575 ,  G02F1/035

CPC分类号： H01Q9/285 ,  H04B10/25752

摘要： The invention relates to an electro-optical component with a millimeter or submillimeter antenna and an optical receiver. In order, in the case of such an electro-optical component, to achieve the situation in which millimeter waves or submillimeter waves can be generated particularly well, the invention provides for the optical receiver to be an electroabsorption modulator.

摘要翻译： 本发明涉及一种具有毫米或亚毫米天线和光接收器的电光部件。 为了在这种电光部件的情况下，为了实现能够特别良好地产生毫米波或亚毫米波的情况，本发明提供了光接收机作为电吸收调制器。

公开(公告)号：US20040247278A1

公开(公告)日：2004-12-09

申请号：US10499973

申请日：2004-06-24

发明人： Jun Hirano ,  Takashi Aramaki

IPC分类号： G02B006/00

CPC分类号： H04B10/25752 ,  H04B10/25753

摘要： A system to reduce number of APs (base station) and handover number (number of times to switch the APs) and secure a communication feasible area to prevent break of communication between a mobile body side and a ground side is disclosed. In this system, an optical fiber (15) connected to an AP (base station) (11) is branched by optical distribution means (17), and a plurality of tail ends of the optical fiber is thereby formed. E/O, O/E conversion means (optical signal/electronic signal interconversion means) (19) which convert optical signals and electronic signals and antennas (21) emitting radio waves are respectively provided at the plurality of tail ends of the optical fiber. The respective antennas are arranged along a track (3) on which a mobile body (1) moves. The whole track is covered by a continuous area comprised of communication feasible areas (23) for the respective antennas. Consequently, the communication feasible area on the track of the mobile body by one AP can be wide.

摘要翻译： 公开了一种减少AP数量（基站）和切换次数（切换AP的次数）并确保通信可行区域以防止移动体侧与接地侧之间的通信中断的系统。 在该系统中，连接到AP（基站）（11）的光纤（15）由光分配装置（17）分支，从而形成光纤的多个尾端。 分别在光纤的多个尾端设置E / O，O / E转换装置（光信号/电子信号互换装置）（19），其转换光信号和电子信号以及发射无线电波的天线（21）。 各个天线沿着移动体（1）移动的轨道（3）布置。 整个轨道由包括用于各个天线的通信可行区域（23）组成的连续区域覆盖。 因此，一个AP在移动体的轨迹上的通信可行区域可以是广泛的。

公开(公告)号：US20040228638A1

公开(公告)日：2004-11-18

申请号：US10873898

申请日：2004-06-21

申请人： HRL Laboratories, LLC

发明人： Keyvan Sayyah ,  Hossein Izadpanah ,  David M. Pepper

IPC分类号： H04B010/04

CPC分类号： H04B10/64 ,  H04B10/25752 ,  H04B10/60

摘要： In a method and apparatus for converting optical wavelength division multiplexed channels to wireless channels, the information carrying optical carriers are first de-multiplexed and each optical carrier is then extracted from the data using an optical channelizing technique. The optical frequency of each of the extracted optical carriers is then shifted by an amount equal to the desired wireless carrier frequencies in the broadband wireless channels. Optical heterodyning of the frequency-shifted extracted lightwave carriers with the original data-containing optical signals, which are mutually in phase coherence, in a photodetector results in a set of wireless carriers each modulated with the data carried by the corresponding optical channel.

摘要翻译： 在将光波分复用信道转换为无线信道的方法和装置中，首先对携带载波的光载波进行解复用，然后使用光信道化技术从数据中提取每个光载波。 然后，每个提取的光载波的光频率移动等于宽带无线信道中期望的无线载波频率的量。 在光电检测器中具有相位相干的带原始数据的光信号的频移提取的光波载波的光学外差产生一组无线载波，每一个无线载波用相应光信道承载的数据进行调制。