Abstract: A media converter, a system and a method for converting packet based data into serial data and vice versa are provided. The media converter comprises a first interface configured to receive and provide a first type of data stream based on data packets, a second interface configured to receive and provide a second type of data stream based on a continuous serial bit stream, and a signal processor connected to the first and second interfaces and configured to convert said first type of data stream into said second type of data stream and vice versa on the basis of a block encoding/decoding algorithm and a line encoding/decoding algorithm. Thus, enhanced bit error rate may be obtained, thereby allowing the use of optical transmission channels of increased length.

Abstract: An electrically controlled optical oscillator for a single subcarrier optical phase-locked loop, which includes: an electrically controlled electrical oscillator having an input, which receives an electrical driving input signal, and an output, which supplies an electrical driving output signal that has a frequency that is a function of the electrical driving input signal; a continuous-wave laser source, which supplies an optical carrier; and an optical modulator, which has an optical input connected to the laser source and receives the optical carrier, an electrical input, which is connected to the output of the electrically controlled electrical oscillator and receives the electrical driving output signal, and an optical output that modulates the optical carrier with the electrical driving output signal and generates an optical modulated signal. The optical modulator generates an optical modulated signal with single optical subcarrier.

Abstract: A local positioning system comprises a plurality of sensor elements that may communicate with mobile units in a wireless fashion. The responsiveness of the mobile units is measured by yes/no answers and averaged so as to provide a measure of the distance of a mobile unit to a specified sensor element. Based on this measure and the known positions of the sensor element, the position of the mobile unit is estimated, for instance by a model of ideal springs.

Abstract: A local positioning system comprises a plurality of sensor elements that may communicate with mobile units in a wireless fashion. The responsiveness of the mobile units is measured by yes/no answers and averaged so as to provide a measure of the distance of a mobile unit to a specified sensor element. Based on this measure and the known positions of the sensor element, the position of the mobile unit is estimated, for instance by a model of ideal springs.