Packet-optical Add/Drop multiplexer technology: A pragmatic way to introduce optical packet switching in the next generation of metro networks
This paper describes a packet-optical add/drop multiplexer technology designed for Metro-ring networks to reduce cost and power consumption with a network efficiency comparable to a full-electronic Ethernet solution. A demonstrator including three nodes is shown.
Mobility management in optical mobile network
In this paper a novel mobility management scheme is proposed that is based on optical packet switching. Optical Packet based Mobility Management (OPMM) is proved to be more efficient for mobile traffic transport compared to conventional GPRS Tunneling Protocol (GTP) regarding packet overhead, transport latency and energy consumption. Meanwhile, OPMM reduces the complexity of the mobility management procedure. The system design is validated in a simulator and the performance is compared with the standard 3GPP implementation in realistic scenarios with a reference architecture.
Testing digital circuits using a Mixed-Signal Automatic Test Equipment
This paper presents the results of parametric testing of digital ICs using a dedicated Mixed Signal Automatic Testing Equipment. Due to the prohibitive price of the ATE equipment and dedicated Device Interface Board (DIB) for digital Integrated Circuits (ICs), a DIB for analog circuits was used to perform the testing. Despite the challenges presented by the experiments, the results prove to be accurate for the performed tests, according to the data sheet of the digital ICs and production test data provided by the manufacturer.