Discrete Multitone Modulation for Maximizing Transmission Rate in Step-Index Plastic Optical Fibres

The use of standard 1-mm core-diameter step-index plastic optical fiber (SI-POF) has so far been mainly limited to distances of up to 100 m and bit-rates in the order of 100 Mbit/s. By use of digital signal processing, transmission performance of such optical links can be improved. Among the different technical solutions proposed, a promising one is based on the use of discrete multitone (DMT) modulation, directly applied to intensity-modulated, direct detection (IM/DD) SI-POF links. This paper presents an overview of DMT over SI-POF and demonstrates how DMT can be used to improve transmission rate in such IM/DD systems. The achievable capacity of an SI-POF channel is first analyzed theoretically and then validated by experimental results. Additionally, first experimental demonstrations of a real-time DMT over SI-POF system are presented and discusse

Project FAST - fast actuators sensors & transceivers

In this paper we give an overview of the German project cluster FAST which targets a technical breakthrough by real-time with latencies below 1 ms to enable advanced applications in the area of connectivity, traffic, manufacturing and health. FAST is based on 25 technical projects conducted by over 80 partners in industry and research. The innovations are outlined and include high frequency communication aspects such as 20 Gb/s communications at 200 GHz, real-time OFDM MIMO imaging radar, real-time GPS navigation with <; 1 m accuracy, encryption using the unique air channel between nodes, time- and scenario-dependent latency measurements, the mobile edge cloud concept as well as synchronization via Ethernet with achieved measured accuracy of 1 ns. Moreover, this paper aims at stimulating potential cooperation between Latin America and Germany