公开(公告)号：US07620328B2

公开(公告)日：2009-11-17

申请号：US11048394

申请日：2005-01-31

申请人： Paul Toliver

发明人： Paul Toliver

IPC分类号： H04J14/02 ,  H04B10/04

CPC分类号： H04J14/007 ,  H04B10/5055 ,  H04B10/5561

摘要： The present invention relates generally to an optical CDMA transmission system and method employing differential optical encoding and bipolar decoding. Differential encoding and bipolar decoding may be performed at the bit level, wherein differential phase encoding and decoding occurs on an entire composite signal. Differential encoding and bipolar decoding may also be performed at the chip level, wherein differential phase encoding and decoding occurs on individual spectral components of a given signal.

摘要翻译： 本发明一般涉及采用差分光编码和双极解码的光CDMA传输系统和方法。 可以在位电平执行差分编码和双极解码，其中差分相位编码和解码发生在整个复合信号上。 差分编码和双极解码也可以在芯片级执行，其中差分相位编码和解码发生在给定信号的各个频谱分量上。

公开(公告)号：US20070280697A1

公开(公告)日：2007-12-06

申请号：US11444764

申请日：2006-06-01

申请人： Ronald Charles Menendez

发明人： Ronald Charles Menendez

IPC分类号： H04B10/00

CPC分类号： H04J14/02 ,  H04J14/007

摘要： The invention is directed to code labeling in an optical network. The network includes a transmitting station operable to transmit an optical signal. The network also includes an encoder coupled to the transmitting station operable to label the optical signal composed of a group of codes. A receiving station operable to receive the labeled group of optical codes is also provided. The receiving station is operable to read the optical signal if the label of the received group of codes corresponds to the group of codes assigned to the receiving station.

摘要翻译： 本发明涉及光网络中的代码标注。 网络包括可操作以发送光信号的发送台。 网络还包括耦合到发射台的编码器，可操作地标记由一组码组成的光信号。 还提供了可操作以接收标记的光学代码组的接收站。 如果所接收的代码组的标签对应于分配给接收站的代码组，则接收站可操作以读取光信号。

公开(公告)号：US07292744B2

公开(公告)日：2007-11-06

申请号：US10543334

申请日：2004-03-01

申请人： Toshihiko Ouchi

发明人： Toshihiko Ouchi

IPC分类号： G02B6/12

CPC分类号： G02B6/43 ,  H04J14/007 ,  H05K1/0274

摘要： An optical connection device includes: a substrate; an optical waveguide provided in the substrate; and plural optical connection ports provided in the optical waveguide and having at least one of a light output port and a light input port, the light output port outputting light to the optical waveguide, the light input port receiving light from the optical waveguide, and is characterized by further including an arithmetic circuit for, using a key, selectively decoding an optical signal which has been coded in such a manner that it is decoded only at a light input port that is given a key for decoding and which has been outputted from a light output port to the optical waveguide to be received at the light input port.

摘要翻译： 光连接装置包括：基板; 设置在基板中的光波导; 以及多个光连接端口，设置在所述光波导中，并且具有光输出端口和光输入端口中的至少一个，所述光输出端口向所述光波导输出光，所述光输入端口接收来自所述光波导的光，并且是 其特征在于还包括运算电路，用于使用键选择性地对已经被编码的光信号进行解码，所述光信号仅以给出用于解码的键的光输入端口被解码并且已从 在光输入端口处接收到光波导的光输出端口。

公开(公告)号：US20060209739A1

公开(公告)日：2006-09-21

申请号：US11289259

申请日：2005-11-29

申请人： P. Kumar ,  Reza Omrani ,  Joseph Touch ,  Alan Willner ,  Poorya Saghari

发明人： P. Kumar ,  Reza Omrani ,  Joseph Touch ,  Alan Willner ,  Poorya Saghari

IPC分类号： H04B7/216

CPC分类号： H04J14/007 ,  H04J13/004 ,  H04J13/18

摘要： An optical code division multiple access (OCDMA) system includes an optical transmitter system configured to transmit data from a plurality of users through a shared optical channel by encoding the data from each user with a spreading code assigned to that user. Each spreading code includes a unique sequence of T time chips along a time axis. The data from each user is representable by T symbols. The OCDMA system further includes an optical receiver system configured to demodulate the data from each user by correlating signals received from the transmitter system with the spreading code assigned to that user. When transmitting a data symbol for each user, the transmitter system selects one out of T distinct cyclic shifts of the spreading code assigned to that user, and transmits the selected cyclic shift of the assigned spreading code along the time axis.

公开(公告)号：US06665308B1

公开(公告)日：2003-12-16

申请号：US09156560

申请日：1998-09-17

申请人： Selim Shlomo Rakib ,  Yehuda Azenkot

发明人： Selim Shlomo Rakib ,  Yehuda Azenkot

IPC分类号： H04B138

CPC分类号： H04W48/16 ,  H03M13/256 ,  H03M13/41 ,  H03M13/4169 ,  H03M13/6331 ,  H04B1/707 ,  H04B7/2668 ,  H04B2201/709709 ,  H04H20/78 ,  H04J3/0682 ,  H04J13/0074 ,  H04J14/007 ,  H04L1/006 ,  H04L1/16 ,  H04L5/023 ,  H04L5/026 ,  H04L5/06 ,  H04L7/04 ,  H04L7/041 ,  H04L12/2801 ,  H04L25/03343 ,  H04L27/362 ,  H04L2025/03414 ,  H04N7/10 ,  H04N7/17309 ,  H04W74/0866

摘要： A system for bidirectional communication of digital data between a central unit and a remote unit wherein the need for tracking loops in the central unit has been eliminated. The central unit transmitter generates a master carrier and a master clock signal which are used to transmit downstream data to the remote units. The remote units recover the master carrier and master clock and synchronize local oscillators in each remote unit to these master carrier and master clock signals to generate reference carrier and clock signals for use by the remote unit receiver. These reference carrier and clock signals are also used by the remote unit transmitters to transmit upstream data to the central unit. The central unit receiver detects the phase difference between the reference carrier and clock signals from the remote units periodically and adjusts the phase of the master carrier and master clock signals for use by the central unit receiver to receive the upstream data.

摘要翻译： 已经消除了用于在中央单元和远程单元之间双向通信数字数据的系统，其中在中央单元中需要跟踪回路。 中央单元发射机产生主载波和主时钟信号，用于将下行数据发送到远程单元。 远程单元恢复主载波和主时钟，并将每个远程单元中的本地振荡器与这些主载波和主时钟信号同步，以生成参考载波和时钟信号供远程单元接收机使用。 这些参考载波和时钟信号也被远程单元发射机用于将上行数据传输到中央单元。 中央单元接收机周期性地检测来自远程单元的参考载波和时钟信号之间的相位差，并调整主载波和主时钟信号的相位，供中央单元接收机使用以接收上行数据。

公开(公告)号：US06574268B1

公开(公告)日：2003-06-03

申请号：US09718154

申请日：2000-11-21

申请人： Marcos Antonio Bergamo

发明人： Marcos Antonio Bergamo

IPC分类号： H04B1012

CPC分类号： H04J13/004 ,  H04J13/0077 ,  H04J13/12 ,  H04J13/18 ,  H04J14/007

摘要： A system (101-139) receives a transmitted optical signal and generates an orthogonal despreading code that is different than the code used to spread the transmitted signal. The system (101-139) then despreads the received signal using the despreading code. By using a code to despread the received signal that is different than the code used to spread the signal, the overall interference in the system can be reduced and even eliminated.

摘要翻译： 系统（101-139）接收所发送的光信号，并生成与用于扩展发送信号的码不同的正交解扩码。 系统（101-139）然后使用解扩码对接收到的信号进行解扩。 通过使用代码来解扩不同于用于扩展信号的代码的接收信号，可以减少甚至消除系统中的整体干扰。

公开(公告)号：US20020015423A1

公开(公告)日：2002-02-07

申请号：US09759842

申请日：2001-01-12

发明人： Selim Shlomo Rakib ,  Yehuda Azenkot

IPC分类号： H04J001/00 ,  H04J003/06

CPC分类号： H04W48/16 ,  H03M13/256 ,  H03M13/39 ,  H03M13/41 ,  H04B1/1027 ,  H04B1/707 ,  H04B1/7087 ,  H04B7/2668 ,  H04B2201/709709 ,  H04H20/77 ,  H04H20/78 ,  H04J3/0602 ,  H04J3/0608 ,  H04J3/0638 ,  H04J3/0682 ,  H04J13/00 ,  H04J13/004 ,  H04J14/007 ,  H04L1/006 ,  H04L1/16 ,  H04L5/023 ,  H04L5/026 ,  H04L5/06 ,  H04L7/041 ,  H04L12/2801 ,  H04L25/03057 ,  H04L25/03343 ,  H04L25/4921 ,  H04L27/0014 ,  H04L27/2656 ,  H04L27/2657 ,  H04L27/2662 ,  H04L27/362 ,  H04L2025/03414 ,  H04L2027/0083 ,  H04L2027/0087 ,  H04N7/10 ,  H04N7/17309 ,  H04N7/54 ,  H04N21/2221 ,  H04N21/2408 ,  H04N21/4305 ,  H04N21/4383 ,  H04W24/00 ,  H04W56/00 ,  H04W74/0866

摘要： A system for bidirectional communication of digital data between a central unit and a remote unit wherein the need for tracking loops in the central unit has been eliminated. The central unit transmitter generates a master carrier and a master clock signal which are used to transmit downstream data to the remote units. The remote units recover the master carrier and master clock and synchronize local oscillators in each remote unit to these master carrier and master clock signals to generate reference carrier and clock signals for use by the remote unit receiver. These reference carrier and clock signals are also used by the remote unit transmitters to transmit upstream data to the central unit. The central unit receiver detects the phase difference between the reference carrier and clock signals from the remote units periodically and adjusts the phase of the master carrier and master clock signals for use by the central unit receiver to receive the upstream data.

摘要翻译： 已经消除了用于在中央单元和远程单元之间双向通信数字数据的系统，其中在中央单元中需要跟踪环路。 中央单元发射机产生主载波和主时钟信号，用于将下行数据发送到远程单元。 远程单元恢复主载波和主时钟，并将每个远程单元中的本地振荡器与这些主载波和主时钟信号同步，以生成参考载波和时钟信号供远程单元接收机使用。 这些参考载波和时钟信号也被远程单元发射机用于将上行数据传输到中央单元。 中央单元接收机周期性地检测来自远程单元的参考载波和时钟信号之间的相位差，并调整主载波和主时钟信号的相位，供中央单元接收机使用以接收上行数据。

公开(公告)号：US20010001616A1

公开(公告)日：2001-05-24

申请号：US09737678

申请日：2000-12-13

发明人： Selim Shlomo Rakib ,  Yehuda Azenkot

IPC分类号： H04L027/00

CPC分类号： H04W48/16 ,  H03M13/256 ,  H03M13/39 ,  H03M13/41 ,  H04B1/1027 ,  H04B1/707 ,  H04B1/7087 ,  H04B7/2668 ,  H04B2201/709709 ,  H04H20/77 ,  H04H20/78 ,  H04J3/0602 ,  H04J3/0608 ,  H04J3/0638 ,  H04J3/0682 ,  H04J13/00 ,  H04J13/004 ,  H04J14/007 ,  H04L1/006 ,  H04L1/16 ,  H04L5/023 ,  H04L5/026 ,  H04L5/06 ,  H04L7/041 ,  H04L12/2801 ,  H04L25/03057 ,  H04L25/03343 ,  H04L25/4921 ,  H04L27/0014 ,  H04L27/2656 ,  H04L27/2657 ,  H04L27/2662 ,  H04L27/362 ,  H04L2025/03414 ,  H04L2027/0083 ,  H04L2027/0087 ,  H04N7/10 ,  H04N7/17309 ,  H04N7/54 ,  H04N21/2221 ,  H04N21/2408 ,  H04N21/4305 ,  H04N21/4383 ,  H04W24/00 ,  H04W56/00 ,  H04W74/0866

摘要： A system for bidirectional communication of digital data between a central unit and a remote unit wherein the need for tracking loops in the central unit has been eliminated. The central unit transmitter generates a master carrier and a master clock signal which are used to transmit downstream data to the remote units. The remote units recover the master carrier and master clock and synchronize local oscillators in each remote unit to these master carrier and master clock signals to generate reference carrier and clock signals for use by the remote unit receiver. These reference carrier and clock signals are also used by the remote unit transmitters to transmit upstream data to the central unit. The central unit receiver detects the phase difference between the reference carrier and clock signals from the remote units periodically and adjusts the phase of the master carrier and master clock signals for use by the central unit receiver to receive the upstream data.

公开(公告)号：US5793759A

公开(公告)日：1998-08-11

申请号：US588650

申请日：1996-01-19

申请人： Selim Shlomo Rakib ,  Yehuda Azenkot

发明人： Selim Shlomo Rakib ,  Yehuda Azenkot

IPC分类号： H03M13/25 ,  H03M13/41 ,  H04B1/707 ,  H04B7/26 ,  H04H60/97 ,  H04J3/06 ,  H04J11/00 ,  H04J13/00 ,  H04J13/18 ,  H04J14/00 ,  H04L5/02 ,  H04L5/06 ,  H04L7/04 ,  H04L12/28 ,  H04L12/56 ,  H04L25/03 ,  H04L27/36 ,  H04N7/173 ,  H04B1/69 ,  H04B7/216

CPC分类号： H04W48/16 ,  H04B1/707 ,  H04J13/00 ,  H04J13/004 ,  H04J13/18 ,  H04J3/0608 ,  H04J3/0682 ,  H04L12/2801 ,  H04L25/03343 ,  H04L27/362 ,  H04L5/023 ,  H04L5/026 ,  H04L5/06 ,  H04N7/10 ,  H04N7/17309 ,  H04B2201/709709 ,  H04B7/2668 ,  H04H60/97 ,  H04J14/007 ,  H04L2025/03414 ,  H04L7/041 ,  H04W28/24 ,  H04W28/26 ,  H04W4/18 ,  H04W74/0866

摘要： A method and apparatus for carrying out synchronous co-division multiple access (SCDMA,) communication of multiple channels of digital data over a shared transmission media such as a cable television system coaxial cable, a fiber optic or copper conductor telephone link, terrestial microwave, satellite link, local or wide area network, wireless including cellur network or some combination of these media using suitable interface circuitry. The system includes modems at remote units and a central unit to receive time division multiplexed digital data arranged into timeslots or channels and uses orthogonal codes to encode each channel of multiple data and spread the energy of each channel data over a frame of data transmitted in the code domain. Spreading the data this way makes the system less susceptible to impulse noise. Frames are synchronized as between remote and central units using a ranging scheme which is also useful in any other system transmitting data by frames in a distributed system where synchronizing the frames as between all units regardless of differences in propagation delays is necessary. Each frame in the SCDMA modulation scheme includes a gap or guardband containing no other data. The ranging process involves training each remote unit to impose enough delay prior to re-transmission of a barker code received from the CU such that a barker code sent by the RU arrives at the CU during the gap. The process of setting the delay in each RU is a trial and error process, and each RU starts the ranging process asynchronously. Contention resolution protocols such that only one RU is aligning to the gap at any particular time are taught.

摘要翻译： 一种用于在诸如有线电视系统同轴电缆，光纤或铜导体电话链路，陆地微波等共享传输介质上进行多信道数字数据的同步并行多址（SCDMA）通信的方法和装置， 卫星链路，本地或广域网，包括蜂窝网络的无线网络或使用合适的接口电路的这些媒体的某些组合。 该系统包括远程单元的调制解调器和中央单元，用于接收布置在时隙或信道中的时分复用数字数据，并使用正交码来对多个数据的每个信道进行编码，并将每个信道数据的能量扩展到 代码域。 以这种方式传播数据使得系统不易受到脉冲噪声的影响。 帧在远程和中央单元之间使用测距方案同步，该测距方案对于在分布式系统中以帧的方式传输数据的任何其他系统也是有用的，其中在不考虑传播延迟之间的差异的情况下，在所有单元之间同步帧。 SCDMA调制方案中的每个帧包括不包含其他数据的间隙或保护带。 测距过程涉及训练每个远程单元以在重新发送从CU接收到的巴克码之前施加足够的延迟，使得由RU发送的巴克码在间隙期间到达CU。 在每个RU中设置延迟的过程是一个试错过程，每个RU异步启动测距过程。 教导了在任何特定时间只有一个RU与间隙对齐的竞争解决协议。

公开(公告)号：US5745837A

公开(公告)日：1998-04-28

申请号：US616071

申请日：1996-03-14

申请人： Amir Michael Fuhrmann

发明人： Amir Michael Fuhrmann

IPC分类号： H03M13/25 ,  H03M13/41 ,  H04B1/707 ,  H04B7/26 ,  H04H60/97 ,  H04J3/06 ,  H04J11/00 ,  H04J13/00 ,  H04J13/02 ,  H04J14/00 ,  H04L5/02 ,  H04L5/06 ,  H04L7/04 ,  H04L12/28 ,  H04L12/56 ,  H04L25/03 ,  H04L27/36 ,  H04N7/173

CPC分类号： H04B1/707 ,  H04J13/00 ,  H04J13/004 ,  H04J13/18 ,  H04J3/0652 ,  H04J3/0682 ,  H04L12/2801 ,  H04L25/03343 ,  H04L27/362 ,  H04L5/023 ,  H04L5/026 ,  H04L5/06 ,  H04L7/04 ,  H04N7/10 ,  H04N7/17309 ,  H04W48/16 ,  H04B2201/709709 ,  H04B7/2668 ,  H04H60/97 ,  H04J14/007 ,  H04J3/0694 ,  H04L2025/03414 ,  H04L7/041 ,  H04W28/24 ,  H04W28/26 ,  H04W4/18 ,  H04W74/0866

摘要： A method and apparatus for carrying an ATM communication protocol on a hybrid fiber coax CATV system. Point to point communication is supported by use of synchronous code division multiplexing on the physical and by assigning on the MAC layer one or more orthogonal SCDMA codes exclusively for use by pairs of devices needing to communicate such the head end and any customer premises equipment. Quality of service or guaranteed bandwidth availability is implemented by controlling the code space at the MAC layer such that certain CPEs having in use peripherals which cannot tolerate interruptions in data flow may reserve one or more SCDMA codes for use exclusively by them. Standard ATM cells are modified by the addition of a two byte virtual link header which identifies to which CPE a particular ATM packet is destined. This virtual header also makes possible broadcast and multicast of packets from the head end to all CPEs. Each byte in each ATM cell has 8 bits of data and a 9th bit which is encoded with to indicate where the ATM cell starts and includes CRC data for error detection and correction. Bandwidth is allocated by the head end computer which executes algorithms on the MAC layer to collect actual bandwidth usage information and requests for bandwidth and prioritize them in accordance with the channel allocation/reservation scheme currently use. The channel allocation/reservation scheme can be changed on the fly and reallocation calculations to adjust bandwidth allocations are calculated every 10 milliseconds and the new allocations are distributed in downstream messages which are transmitted to all CPEs.

摘要翻译： 一种用于在混合光纤同轴电缆系统上携带ATM通信协议的方法和装置。 通过在物理上使用同步码分复用来支持点对点通信，并且通过在MAC层上分配一个或多个正交的SCDMA码，专门用于需要通信这样的头端的设备和任何客户驻地设备。 通过控制MAC层的代码空间来实现服务质量或保证带宽可用性，使得具有不能容忍数据流中断的使用外围设备的某些CPE可以预留一个或多个SCDMA代码供其专门使用。 标准ATM信元通过添加一个两字节的虚拟链路报头来进行修改，该标题标识特定ATM信息包指向哪个CPE。 该虚拟头还使得从头端到所有CPE的分组的广播和多播成为可能。 每个ATM信元中的每个字节具有8位数据，第9位被编码以指示ATM信元起始的位置，并包括用于错误检测和校正的CRC数据。 带宽由头端计算机分配，前端计算机在MAC层执行算法，以收集实际带宽使用信息和请求带宽，并根据当前使用的信道分配/预留方案对其进行优先级排序。 信道分配/预留方案可以在飞行中进行更改，并且重新分配计算以调整带宽分配，每10毫秒计算一次，并且新的分配被分发到发送给所有CPE的下游消息中。