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1.发明授权System and method for scaling total client capacity with a standard-compliant optical transport network (OTN) 有权使用符合标准的光传输网络（OTN）来缩放总客户端容量的系统和方法公开(公告)号：US09231721B1
公开(公告)日：2016-01-05
申请号：US13536841
申请日：2012-06-28
申请人： Badri Varadarajan , Bert Klaps
发明人： Badri Varadarajan , Bert Klaps
CPC分类号： H04J3/1652 , H04J3/1658 , H04J3/1664 , H04J14/005 , H04J2203/0001 , H04L1/00 , H04L1/20
摘要： In an Optical Transport Network (OTN) system, methods and devices are provided for communicating rate-adaptive OTUk frames. One method determines channel statistics for a fiber span connecting a transmitter to a receiver. A client input data rate is determined that is sufficient to meet a minimum communication threshold, and a rate-adaptive OTUk frame format is determined sufficient to carry the client input data rate. The format comprises a set of (n) allocated slots of client input data in a rate-adaptive OTUk frame comprising (m) slots, where (n) is less than or equal to (m). The method then fills the rate-adaptive OTUk frame, including (m−n) unallocated slots, using one of two processes. The first process fills the rate-adaptive OTUk frame with parity bits computed from client input data. The second process fills at least a portion of the rate-adaptive OTUk frame with and dummy bits.
摘要翻译： 在光传输网（OTN）系统中，提供了用于通信速率自适应OTUk帧的方法和设备。 一种方法确定将发射机连接到接收机的光纤跨段的信道统计。 确定足以满足最小通信阈值的客户端输入数据速率，并且确定足以承载客户端输入数据速率的速率自适应OTUk帧格式。 该格式包括一组（n）个分配的客户端输入数据的时隙，速率自适应OTUk帧包括（m）个时隙，其中（n）小于或等于（m）。 该方法然后使用两个过程之一填充速率自适应OTUk帧，包括（m-n）个未分配时隙。 第一个过程用从客户输入数据计算的奇偶校验位填充速率自适应OTUk帧。 第二个过程填充速率自适应OTUk帧的至少一部分和虚拟位。
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公开(公告)号：US08909061B1
公开(公告)日：2014-12-09
申请号：US13461847
申请日：2012-05-02
申请人： Badri Varadarajan
发明人： Badri Varadarajan
CPC分类号： H04B10/6161 , H04B10/0775 , H04B10/25137
摘要： A method is provided for performing chromatic dispersion (CD) pre-compensation. The method generates an electronic signal at a transmitter, and uses a transmit CD compensation estimate to compute a CD pre-compensation filter. The transmit CD pre-compensation filter is used to process the electronic signal, generating a pre-compensated electronic signal. The pre-compensated electronic signal is converted into an optical signal and transmitted to an optical receiver via an optical channel. In one aspect, the transmitter generates a test electronic signal and the CD compensation estimate uses a first dispersion value to compute a first CD compensation filter. The transmitter accepts a residual dispersion estimate of the test optical signal from the first optical receiver CD compensation filter, generated from a (receiver-side) CD estimate, and then the transmit CD estimate can be modified in response to the combination of the first dispersion value and residual dispersion estimate.
摘要翻译： 提供了一种用于执行色散（CD）预补偿的方法。 该方法在发射机处产生电子信号，并使用发射CD补偿估计来计算CD预补偿滤波器。 发射CD预补偿滤波器用于处理电子信号，产生预补偿的电子信号。 预补偿电子信号被转换成光信号，并通过光信道传输到光接收机。 在一个方面，发射机产生测试电子信号，并且CD补偿估计使用第一色散值来计算第一CD补偿滤波器。 发射机接收来自（接收机侧）CD估计产生的来自第一光接收机CD补偿滤波器的测试光信号的残余色散估计，然后响应于第一色散的组合来修改发送CD估计 值和残差分布估计。
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公开(公告)号：US08792789B1
公开(公告)日：2014-07-29
申请号：US13413705
申请日：2012-03-07
申请人： Badri Varadarajan , Daruish Dabiri , Subhash Roy
发明人： Badri Varadarajan , Daruish Dabiri , Subhash Roy
CPC分类号： H04B10/6161
摘要： A method is provided for performing chromatic dispersion (CD) compensation. A zero-forcing filter is calculated with a number of taps (n) required to nullify a chromatic dispersion frequency response of an optical channel. The number of taps in the zero-forcing filter is truncated to a number equal to (n−x), where x is an integer greater than 0. In one aspect, the chromatic dispersion frequency response of the optical channel is partitioned into a plurality of constituent chromatic dispersion responses, and a zero-forcing filter is calculated for each of the plurality of constituent chromatic dispersion responses. The number of taps in each of the plurality of zero-forcing filters is truncated, and the CD compensation filter is formed for each of the plurality of truncated tap zero-forcing filters. In another aspect, the tap values of the zero-forcing filter are quantized to a finite quantization set.
摘要翻译： 提供了一种用于执行色散（CD）补偿的方法。 使用消除光通道的色散频率响应所需的抽头数（n）来计算零强制滤波器。 迫零滤波器中的抽头数被截断为等于（n-x）的数字，其中x是大于0的整数。在一个方面，光信道的色散频率响应被划分成多个 并且针对多个构成色散响应中的每一个计算零强迫滤波器。 多个迫零滤波器中的每一个中的抽头数量被截断，并且为多个截断的抽头强迫滤波器中的每一个形成CD补偿滤波器。 在另一方面，迫零滤波器的抽头值被量化为有限量化集。
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公开(公告)号：US08755453B2
公开(公告)日：2014-06-17
申请号：US12326878
申请日：2008-12-02
IPC分类号： H04L27/00
CPC分类号： H04L5/0048 , H04B1/04 , H04L23/02 , H04L25/0202 , H04L27/2607 , H04L27/2613 , H04L27/2649
摘要： In one embodiment, a transmitter includes a binary sequence generator unit configured to provide a sequence of reference signal bits, wherein the sequence is an inseparable function of a cell identification parameter, a cyclic prefix mode corresponding to the transmitter and one or more time indices of the sequence. The transmitter also include a mapping unit that transforms the sequence of reference signal bits into a complex reference signal, and a transmit unit configured to transmit the complex reference signal. In another embodiment, a receiver includes a receive unit configured to receive a complex reference signal and a reference signal decoder unit configured to detect a sequence of reference signal bits from the complex reference signal, wherein the sequence is an inseparable function of a cell identification parameter, a cyclic prefix mode corresponding to a transmitter and one or more time indices of the sequence.
摘要翻译： 在一个实施例中，发射机包括被配置为提供参考信号比特序列的二进制序列发生器单元，其中该序列是小区识别参数的不可分离的功能，对应于发射机的循环前缀模式和一个或多个时间指数 序列。 发射机还包括将参考信号比特序列变换为复参考信号的映射单元，以及配置成发送复基准信号的发射单元。 在另一实施例中，接收机包括被配置为接收复参考信号的接收单元和被配置为从复参考信号检测参考信号位序列的参考信号解码器单元，其中该序列是小区识别参数的不可分离的函数 ，对应于发射机的循环前缀模式和序列的一个或多个时间索引。
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公开(公告)号：US20100272192A1
公开(公告)日：2010-10-28
申请号：US12768676
申请日：2010-04-27
申请人： Badri Varadarajan , Anand Dabak , Shu Du , Il Han Kim
发明人： Badri Varadarajan , Anand Dabak , Shu Du , Il Han Kim
CPC分类号： H04L27/2613
摘要： A device for communicating digital data over power lines includes a power line interface for transmitting data over at least one band of frequencies. An orthogonal frequency division multiplexing (OFDM) modulation unit generates OFDM symbols using a set of tones for the frequency band. A preamble generation unit generates preamble sequences for the frequency band by using the set of tones used by the OFDM modulation unit. The tones used by the preamble generation unit have a constant magnitude, and a set of phases obtained by quantizing to a small alphabet the phase of a set of tones obtained by taking an IFFT of a portion of a preamble used by a non-interoperable powerline access device. The device may transmit on two or more bands using a sampling frequency clock, wherein a lower band clock frequency is equal to or an integer divisor of a higher band clock frequency.
摘要翻译： 用于通过电力线传送数字数据的装置包括用于通过至少一个频带传送数据的电力线接口。 正交频分复用（OFDM）调制单元使用用于频带的一组音调来生成OFDM符号。 前导码生成单元通过使用由OFDM调制单元使用的音调集合来生成用于频带的前同步码序列。 由前置码生成单元使用的音调具有恒定的幅度，以及通过将非可互操作的电力线使用的前置部分的一部分的IFFT获得的一组音调的相位来量化到小的字母而获得的一组相位 访问设备 该装置可以使用采样频率时钟在两个或更多个频带上进行传输，其中较低频带时钟频率等于或更高频带时钟频率的整数除数。
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公开(公告)号：US09148181B2
公开(公告)日：2015-09-29
申请号：US11811335
申请日：2007-06-08
CPC分类号： H04B1/0082
摘要： A wireless receiver providing multiple services (FIG. 3) is disclosed. The wireless receiver includes an oscillator circuit (304, FIG. 4) arranged to produce a reference frequency (308). A first receiver (302) receives a first signal (300) having a first carrier frequency in response to the reference frequency. A second receiver (322) receives a second signal (320) having a second carrier frequency different from the first carrier frequency in response to the reference frequency.
摘要翻译： 公开了提供多种业务的无线接收机（图3）。 无线接收机包括布置成产生参考频率（308）的振荡器电路（304，图4）。 第一接收器（302）响应于参考频率接收具有第一载波频率的第一信号（300）。 第二接收机（322）响应于参考频率接收具有与第一载波频率不同的第二载波频率的第二信号（320）。
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公开(公告)号：US08817818B2
公开(公告)日：2014-08-26
申请号：US12427124
申请日：2009-04-21
CPC分类号： H04L5/0007 , H04L5/003 , H04L5/0044 , H04L5/0048
摘要： A transmitter includes a bandwidth configuration unit configured to provide an increased system bandwidth corresponding to a bandwidth extension over multiple component carriers. Additionally, the transmitter also includes a transmit unit configured to employ the bandwidth extension.
摘要翻译： 发射机包括带宽配置单元，其被配置为提供对应于多个分量载波上的带宽扩展的增加的系统带宽。 另外，发射机还包括被配置为采用带宽扩展的发射单元。
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公开(公告)号：US08625689B2
公开(公告)日：2014-01-07
申请号：US13179202
申请日：2011-07-08
申请人： Badri Varadarajan , Anand Dabak , Il Han Kim
发明人： Badri Varadarajan , Anand Dabak , Il Han Kim
IPC分类号： H04K1/10
CPC分类号： H04L27/2666 , H04B3/46 , H04B3/54 , H04B2203/5408 , H04B2203/5416 , H04B2203/542 , H04B2203/5425 , H04L1/0002 , H04L1/0019 , H04L5/0003 , H04L27/2607 , H04L27/2671
摘要： Embodiments of the invention provide time-domain link adaptation in power line communications. In one embodiment, the cyclic prefix length and position is adjusted with an OFDM symbol to overlap a periodic impulse noise pulse, thereby allowing the data carried in the symbol to be detected at a receiver. The cyclic prefix may be adjusted to provide a pattern that yields an integer number of OFDM symbols in one zero crossing period. The data rate used for the symbols overlapping the zero-crossing period may be zero or very low. A high data rate may be used for symbols outside the zero-crossing period because those symbols will not be affected by the periodic impulse noise.
摘要翻译： 本发明的实施例提供了电力线通信中的时域链路自适应。 在一个实施例中，循环前缀长度和位置用OFDM符号调整以与周期性脉冲噪声脉冲重叠，从而允许在接收器处检测符号中携带的数据。 可以调整循环前缀以提供在一个零交叉周期中产生整数个OFDM符号的模式。 用于与过零周期重叠的符号的数据速率可以为零或非常低。 由于这些符号不受周期脉冲噪声的影响，因此高数据速率可用于过零周期以外的符号。
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公开(公告)号：US07961810B2
公开(公告)日：2011-06-14
申请号：US11851849
申请日：2007-09-07
IPC分类号： H04L27/00
CPC分类号： H04B1/1027 , H04B7/0417 , H04B7/0478 , H04B7/063 , H04B7/0632 , H04B7/0634 , H04B7/0639 , H04B7/066 , H04B7/0697 , H04L27/2601
摘要： Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter has at least three transmit antennas and includes a feedback decoding portion configured to recover at least one group-based channel quality indicator provided by a feedback signal from a receiver, wherein each group-based channel quality indicator corresponds to one of a set of transmission layer groupings. The transmitter also includes a modulator portion configured to generate at least one symbol stream and a mapping portion configured to multiplex each symbol stream to at least one transmission layer grouping. The transmitter further includes a pre-coder portion configured to couple the transmission layers to the transmit antennas for a transmission. The receiver includes a decoder portion which is configured to use decoded signals from at least one group to decode the other groups.
摘要翻译： 本公开的实施例提供发射机，接收机和操作发射机和接收机的方法。 在一个实施例中，发射机具有至少三个发射天线，并且包括反馈解码部分，其被配置为恢复由来自接收机的反馈信号提供的至少一个基于组的信道质量指示符，其中每个基于组的信道质量指示符对应于一个 的一组传输层分组。 发射机还包括被配置为生成至少一个符号流的调制器部分和被配置为将每个符号流复用到至少一个传输层分组的映射部分。 发射机还包括预编码器部分，其被配置为将传输层耦合到发射天线用于传输。 接收机包括解码器部分，其被配置为使用来自至少一个组的解码信号来解码其他组。
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10.发明申请DEDICATED REFERENCE SIGNAL STRUCTURES FOR SPATIAL MULTIPLEXING BEAMFORMING 审中-公开用于空间多路复用光束的专用参考信号结构公开(公告)号：US20100061360A1
公开(公告)日：2010-03-11
申请号：US12557398
申请日：2009-09-10
CPC分类号： H04L5/0023 , H04L5/0051 , H04L25/0226
摘要： A transmitter is for use with a cellular communication network and includes a beamforming generation unit configured to generate a downlink beamforming transmission corresponding to multiple-layer spatial multiplexing and based on a dedicated reference signal pattern. Additionally, the transmitter also includes a transmit unit configured to transmit the downlink beamforming transmission. A receiver is for use with a cellular communication network and includes a receive unit configured to receive a downlink beamforming transmission, and a beamforming processing unit configured to process the downlink beamforming transmission corresponding to multiple-layer spatial multiplexing and based on a dedicated reference signal pattern.
摘要翻译： 发射机用于蜂窝通信网络，并且包括：波束成形生成单元，被配置为生成对应于多层空间复用的下行链路波束形成传输，并且基于专用参考信号模式。 另外，发射机还包括被配置为发送下行链路波束成形传输的发射单元。 接收机用于蜂窝通信网络并且包括被配置为接收下行链路波束成形传输的接收单元，以及波束形成处理单元，被配置为处理与多层空间复用相对应的下行链路波束成形传输，并且基于专用参考信号模式 。
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