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1. 发明申请

WO2004104531A3 METHOD AND SYSTEM FOR IMPROVED SINGLE-ENDED LOOP MAKE-UP IDENTIFICATION 审中-公开
标题翻译：改进的单端环路识别方法和系统
公开(公告)号：WO2004104531A3
公开(公告)日：2005-01-20
申请号：PCT/US2004015297
申请日：2004-05-14
申请人： TELCORDIA TECH INC
发明人： GALLI STEFANO , KERPEZ KENNETH J
IPC分类号： G01H20060101 , G01R13/00 , G01R31/11 , H04B3/32 , H04B3/46 , H04L12/26 , H04M3/22 , H04M3/30
CPC分类号： H04B3/32 , G01R31/11 , H04B3/493 , H04L43/50 , H04M3/2209 , H04M3/30 , H04M3/306
摘要： In a method and system for determining the composition of a subscriber loop, the method consists of analyzing the echo responses generated by the transmittal of pulses onto the subscriber loop. In the method, discontinuities along a loop are identified sequentially by comparing the measured waveform to waveforms generated on the basis of a hypothesized topology. The best match for the waveform is identified using a maximum likelihood approach and a maximum a-posteriori probability (MAP) estimator using observed knowledge regarding the loop plant. A multiple path search is also utilized to improve results and reduce computation time. Once the generated waveform that best matched the measured data had been found and a discontinuity identified, the waveform generated is subtracted from the measured data to produce a compensated waveform, which is used to detect the location and cause of the next echo. A calibration method is implemented to further improve data acquisition.
摘要翻译：在用于确定用户环路的组成的方法和系统中，该方法包括分析通过向用户环路发送脉冲而产生的回波响应。在该方法中，通过将所测量的波形与基于假定拓扑生成的波形进行比较来顺序地识别循环中的不连续性。使用最大似然法和最大后验概率（MAP）估计器，使用关于环路植物的观察知识来识别波形的最佳匹配。多路径搜索也用于改进结果并减少计算时间。一旦发现与测量数据最匹配的生成波形，并且确定了不连续性，则从测量数据中减去生成的波形，以产生补偿波形，用于检测下一个回波的位置和原因。实施校准方法以进一步改进数据采集。

2. 发明申请

WO2007053172A3 PHASE CHIP FREQUENCY-BINS OPTICAL CODE DIVISION MULTIPLE ACCESS 审中-公开
标题翻译：相位码频率范围光学代码分区多访问
公开(公告)号：WO2007053172A3
公开(公告)日：2007-12-13
申请号：PCT/US2006005834
申请日：2006-02-17
申请人： TELCORDIA TECH INC , UNVERSITY OF CENTRAL FLORIDA , ETEMAD SHAHAB , TOLIVER PAUL , JACKEL JANET LEHR , MENENDEZ RONALD CHARLES , GALLI STEFANO , BANWELL THOMAS CLYDE , DELFYETT PETER
发明人： ETEMAD SHAHAB , TOLIVER PAUL , JACKEL JANET LEHR , MENENDEZ RONALD CHARLES , GALLI STEFANO , BANWELL THOMAS CLYDE , DELFYETT PETER
IPC分类号： H04B1/00
CPC分类号： H04J14/007 , H04B10/505
摘要： Apparatus and system for transmitting and receiving Optical code division multiple access data over an optical Network. The apparatus comprises a spectral phase decoder for Decoding the encoded optical signal to produce a decoded Signal, a time gate for temporally extracting a user signal From the decoded signal, and a demodulator that is operable to Extract user data from the user signal. The system preferably Comprises a source for generating a sequence of optical Pulses, each optical pulse comprising a plurality of spectral Lines uniformly spaced in frequency so as to define a Frequency bin, a data modulator associated with a subscriber And operable to modulate the sequence of pulses using Subscriber data to produce a modulated data signals and a Hadamard encoder associated with the data modulator and Operable to spectrally encode the modulated data signal to Produce an encoded data signal.
摘要翻译：通过光网络发送和接收光码分多址数据的设备和系统。该设备包括用于解码编码光信号以产生解码信号的频谱相位解码器，用于从解码信号中暂时提取用户信号的时间门以及可操作以从用户信号中提取用户数据的解调器。该系统优选地包括用于生成光脉冲序列的源，每个光脉冲包括频率均匀间隔的多个谱线以限定频率仓，与订户相关联的数据调制器并且可操作来调制脉冲序列使用用户数据产生调制的数据信号和与数据调制器相关联的阿达玛（Hadamard）编码器，并且可操作地对调制的数据信号进行频谱编码以产生编码的数据信号。

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