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Future flexible transceivers will be able to adjust modulation format, symbol rate and FEC scheme according to the channel and network conditions. This paper uses a combination of theoretical derivations and experimental results to recommend the best set of parameters to satisfy a specific demand to be routed along the network. In particular, for a given required OSNR (which is related to reach) and...
Earth Observation with optical satellites is a key field in the space sector. In the last decade optical satellites technologically evolved to increase the resolution of the images recorded of the Earth surface. These systems acquire massive data from Earth recordings, and traditional data centers present some limitations. Cloud computing can overcome those limitations and increase the flexibility,...
Carrier Aggregation (CA) is one of the key features introduced in LTE Release 10 to achieve higher levels of throughput. Two or more component carriers (CCs) are aggregated and user equipments (UEs) simultaneously transmit in more than one. The use of non-contiguous resource allocation in the uplink (UL) implies higher peak to average power ratio, so power de-rating is essential to avoid inter-modulation...
The performance of ultrasono-therapy transducer with contact detection by using the impedance phase change is described. Usually a therapy transducer is designed with a /spl lambda//2 frontal plate glued to a PZT-4 piezoceramic. This plate ensures a good mechanical protection of the piezoceramic with a corresponding high-transmission energy. Normally this transducer is operated at the minimum at the...
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