Abstract—Synthetic Packet Pairs (SPP) is a smart approach to estimating round trip time (RTT) with passive monitoring. SPP gives greater accuracy and resolution than conventional active methods. With the ability to measure RTT as experienced by a particular application, SPP can be used to visualise the effectiveness of QoS implementations and further understand delay characteristics of specific...

In this paper, we propose an improved adaptive initialization algorithm for the time domain equalizer in an FDM-based Asymmetric Digital Subscriber Line (ADSL). Using our developed approach, higher convergence rate than that of the commonly used Least-Mean Square algorithm is obtained, whilst attaining bit rates close to the optimum Maximum Shortening SNR and the upper bound Match Filter Bound ...

Last mile link is often a bottleneck for end user. However , users typically have multiple ways of accessing the Internet (cellular, ADSL, public Wifi). This observation led to creation of protocols like mTCP [1] or R-MTP [2]. Current bandwidth aggregation protocols are packet based. However, this is not always practical — for example, non-TCP protocols are often blocked on firewalls. Moreover,...

A persistent criticism of analog synthesis techn;ques is that they cannot cope with the complexity of realistic industrial designs, especially system-level designs. We show how recent advances in simulation-based synthesis can be augmented, via appropriate macromodeling, to attack complex analog blocks. To support this claim, we resynthesize from scratch, in several different styles, a complex ...

If an operator has as starting position a Full Copper topology in which ADSL or VDSL is offered from the Central Office, the next choice he has to make is to provide Full FttH or use another topology option, e.g. FttCab, first as intermediate step to provide a next generation service package. In this paper we present a gradual topology migration path from Full Copper via FttCab and Hybrid FttH ...

In this study four proposed structures for the digital decimation filter which is used in D A / ∑∆ converters of Asymmetrical Digital Subscriber Line (ADSL) are presented. Single multi rate (Finite Impulse Response) FIR, single multi rate (Infinite Impulse Response) IIR, three stages comb-FIR-FIR and comb-IIR-FIR are the four proposed structures. The hardware minimization is considered for each...

1Research & Innovation Department of Alcatel, Francis Wellesplein 1, 2018 Antwerpen, Belgium 2Access Networks Division of Alcatel, Francis Wellesplein 1, 2018 Antwerpen, Belgium 3School of Information Technology & Electrical Engineering, University of Queensland, Brisbane, QLD 4072, Australia 4Department of Electrical Engineering, Katholieke Universiteit Leuven, Kasteelpark Arenberg 10, 3001 Le...