无源线性网络的等效参数的一种简便算法

为简化计算过程,导出了导体系任二导体间的等效电容和导体系的电位系数之间的一个关系式,可方便地计算导体系任二导体间的等效电容.在此基础上,提出了无源线性网络任二节点间的等效参数的一种简便算法,该方法只需写一矩阵和进行简单的矩阵运算.

导体系和无源线性网络的等效参数的一种简便算法

导出了导体系任二导体间的等效电容和导体系的电位系数之间的一个关系式,使用此式可方便地计算导体系任二导体间的等效电容.在此基础上,提出了无源线性网络任二节点间的等效参数的一种简便算法.该方法只需依据网络给出一矩阵和进行简单的矩阵运算.

Dynamic Wavelength and Bandwidth Allocation Using Adaptive Linear Prediction in WDM/TDM Ethernet Passive Optical Networks

Hybrid wavelength-division-multiplexing(WDM)/time-division-multiplexing(TDM) ethernet passive optical networks(EPONs) can achieve low per-subscriber cost and scalability to increase the number of subscribers. This paper discusses dynamic wavelength and bandwidth allocation(DWBA) algorithm in hybrid WDM/TDM EPONs.Based on the correlation structure of the variable bit rate(VBR) video traffic,we propose a quality-ofservice (QoS) supported DWBA using adaptive linear traffic prediction.Wavelength and timeslot are allocated dynamically by optical line terminal(OLT) to all optical network units(ONUs) based on the bandwidth requests and the guaranteed service level agreements(SLA) of all ONUs.Mean square error of the predicted average arriving rate of compound video traffic during waiting period is minimized through Wiener-Hopf equation.Simulation results show that the DWBA-adaptive-linear-prediction(DWBA-ALP) algorithm can significantly improve the QoS performances in terms of low delay and high bandwidth utilization.