Concept

Telecommunications

Related publications (100)

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Receiver design for multi-antenna wireless communications

Andreas Peter Burg

Algorithm choices and corresponding VLSI architectures for spatial multiplexing receivers in multiple-input multiple-output (MIMO) communication systems are described in this paper. Implementations of linear and successive interference cancellation receive ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2005

VLSI implementation of the sphere decoding algorithm

Andreas Peter Burg, Matthieu Philippe Emmanuel Zellweger

Maximum likelihood detection is an essential part of high-performance multiple-input-multiple-output (MIMO) communication systems. While it is attractive due to its superior performance (in terms of BER) its complexity using a straightforward exhaustive se ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2004

Critical steps towards e-Governance: a case study analysis

Matthias Finger

The purpose of this paper is to make a further contribution to the theory and to the understanding of e-Governance. In doing so, the paper proceeds by an in-depth analysis of three cases, which, we think, are particularly illustrative of the three main dim ...

2004

Concatenated codes for block-fading channels

Albert Guillén i Fàbregas

In this thesis we study coding strategies for single-user block-fading channels. The block-fading channel is a simplified model of slowly varying wireless communication channels with stringent delay constraints. This model is particularly important in prac ...

EPFL2004

Spatial and temporal characterization of semiconductor optical amplifiers and novel enhancement configurations

In the ever-growing world of optical telecommunications. Semiconductor Optical Amplifiers (SOAs) are called to play an increasingly important role. Their attractive performances both in the linear and non-linear regime along with their reduced cost and sma ...

EPFL2004

Least Mean-Phase Adaptive Filters With Application to Communications Systems

Ali H. Sayed

The mean-squared-error criterion is widely used in the literature. However, there are applications where the squared-error is not the primary parameter affecting the performance of a system. In many communication systems, for instance, the information bits ...

IEEE2004

Liquid crystal electric tuning of a photonic crystal laser

Demetri Psaltis

We demonstrate an electrically-tuned nematic liquid crystal (LC) infiltrated photonic crystal (PC) laser. The PC laser is encased between two transparent indium tin oxide (ITO) glass plates which serve as the modulating electrodes and also define the LC ce ...

2004

To code or not to code: lossy source-channel communication revisited

Martin Vetterli, Michael Christoph Gastpar, Bixio Rimoldi

What makes a source–channel communication system optimal? It is shown that in order to achieve an optimal cost–distortion tradeoff, the source and the channel have to be matched in a probabilistic sense. The match (or lack of it) involves the source distri ...

2003

Monitoring of Resource Consumption in Java-based Application Servers

To realize dependable and profitable information and communication systems, computing resources (CPU, memory, network bandwidth) should be taken into account to a much wider extent than they are today. E-commerce infrastructure, such as application servers ...

2003

A Novel SOI Schottky Electro-optical Modulator for Ghz High-Speed Switching

Mihai Adrian Ionescu, Luc Thévenaz, Michel Declercq, Philippe Robert, Marco Mazza

Thermo-optical and electro-optical (plasma dispersion) effects for silicon based integrated optical modulators are becoming attractive and effective solutions for telecommunications applications such as switching for programmable optical add-drop multiplex ...

IEEE2003