A broadband high-voltage SLIC for a splitter- and transformerless combined ADSL-Lite/POTS linecard

Zojer, B.; Koban, R.; Pichler, Joachim; Paoli, G.

doi:10.1109/4.890312

Cited by 14 publications

(4 citation statements)

References 7 publications

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“…For the simulation, a specific reference configuration of the Wiener-type model is chosen. This reference configuration is a simple discrete-time model of an ADSL, G.Lite linedriver circuit [9]. To present reproducible results, the simplest model of the circuit was chosen as the reference model and explicit values of the model coefficients are given.…”

Section: The Reference Modelmentioning

confidence: 99%

The Cramer-Rao Bound and DMT Signal Optimisation for the Identification of a Wiener-Type Model

Koeppl

Josan

Paoli

et al. 2004

EURASIP J. Adv. Signal Process.

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In linear system identification, optimal excitation signals can be determined using the Cramer-Rao bound. This problem has not been thoroughly studied for the nonlinear case. In this work, the Cramer-Rao bound for a factorisable Volterra model is derived. The analytical result is supported with simulation examples. The bound is then used to find the optimal excitation signal out of the class of discrete multitone signals. As the model is nonlinear in the parameters, the bound depends on the model parameters themselves. On this basis, a three-step identification procedure is proposed. To illustrate the procedure, signal optimisation is explicitly performed for a third-order nonlinear model. Methods of nonlinear optimisation are applied for the parameter estimation of the model. As a baseline, the problem of optimal discrete multitone signals for linear FIR filter estimation is reviewed

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Section: The Reference Modelmentioning

confidence: 99%

The Cramer-Rao Bound and DMT Signal Optimisation for the Identification of a Wiener-Type Model

Koeppl

Josan

Paoli

et al. 2004

EURASIP J. Adv. Signal Process.

Self Cite

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“…A signal processing dominated application example is now provided to illustrate the context in which SystemC-AMS models will be typically useful. Figure 1 shows a simplified block diagram of a subscriber line interface and codec filter used in ADSL networks [19].…”

Section: Motivations and Requirementsmentioning

confidence: 99%

SystemC-AMS requirements, design objectives and rationale

Vachoux¹,

Grimm²,

Einwich³

2003 Design, Automation and Test in Europe Conference and Exhibition

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This paper presents and discusses the foundations on which the analog and mixed-signal extensions of Sys-temC, named SystemC-AMS, will be developed. First, requirements from targeted application domains are identified. These are then used to derive design objectives and related rationales. Finally, some preliminary seed work is presented and the outline of the analog and mixed-signal extensions development work is given.

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“…Thus on system level several description styles has to be combined. Linear networks (results in linear DAE's) [7]. Such systems establish the connection between the analog subscriber line and the digital (e.g.…”

Section: Application Examplementioning

confidence: 99%

Analog and mixed signal modelling with SystemC-AMS

Vachoux

Grimm

Einwich³

Proceedings of the 2003 International Symposium on Circuits and Systems, 2003. ISCAS '03.

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SystemC will become more and more important for the design of digital circuits from the specification down to the RT-Level. However complex systems containing also analog components. This paper introduces concepts for the extension of the SystemC methodology for the specification and design of analog and mixed signal systems. The concepts will be illustrated on a telecommunication system including digital hard-and software, analog filter and an analog environment. MotivationSystemC supports a wide range of Models of Computation (MoC) and is very well suited for the design and refinement of HW/SW-systems from functional down to register transfer level. However, for a broad range of applications the digital parts and algorithms interact with analog parts and the continuous-time environment. Due to the complexity of these interactions and the importance of the analog parts in the global system's behavior, it is essential to include the analog parts in the design process of an Analog and Mixed Signal system. Simulation performance is therefore very crucial -especially for the analog parts that usually require more detailed models than the digital parts. Thus, different and specialized analog simulators must be introduced to permit the use of the most efficient simulator for the considered application and level of abstraction. In this paper, we describe a design methodology based on analog and mixed-signal extensions of SystemC, .a.k.a. SystemC-AMS. We also illustrate the methodology with a signal processing dominated application example. SystemC OverviewSystemC is a hardware description language for discrete-time (digital) systems. This language is a subset of the object oriented programming language C++, so SystemC descriptions can be compiled, executed and debugged using standard C++ tools. In comparison to languages like VHDL or Verilog, SystemC supports an arbitrary number of Models of Computation (MoC) which allows an efficient development of executable specifications at high abstraction levels and an order of magnitude faster simulation for abstract models.The SystemC 2.0 [1] methodology combines features of existing HDL's, object oriented techniques and new methodologies for the design and refinement of digital hardware and software systems. This methodology is strongly inspired by the communication model introduced by Gajski [6]. In this methodology, modules, which consists of other modules or algorithms (sequential assignments) implemented in methods, communicates via channels. A set of methods for communication is specified in an interface. These methods are implemented in a channel. Modules can call methods of a channel, and events in a channel can activate methods in a module connected to the channel. This concept is generic enough to describe systems using various models of computation, including static and dynamic multirate dataflow networks, Kahn process networks, communicating sequential processes, and discrete events (the MoC of Verilog and VHDL). We call such systems discrete systems. Prede...

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A broadband high-voltage SLIC for a splitter- and transformerless combined ADSL-Lite/POTS linecard

Cited by 14 publications

References 7 publications

The Cramer-Rao Bound and DMT Signal Optimisation for the Identification of a Wiener-Type Model

The Cramer-Rao Bound and DMT Signal Optimisation for the Identification of a Wiener-Type Model

SystemC-AMS requirements, design objectives and rationale

Analog and mixed signal modelling with SystemC-AMS

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