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Low Power Wide Area Networks (LPWAN) are expected to interconnect a high number of simple and inexpensive devices. The ability to control transmission parameters including modulation scheme and output power, enables reduction of the deployment costs, improvement of the network reliability, in terms of error performance under suboptimal conditions, and could contribute to the reduction of the maintenance...
In the smart grid era, various actors and S/W agents need to exchange vast amounts of data towards meeting the communication requirements of the emerging smart energy network infrastructures and the efficient operation of the smart grid system. In this paper, we consider a hierarchical smart grid architecture, in which a novel aggregator market entity is introduced, which acts as an intermediary between...
Actual Ka-band SATCOM systems provide wide-band access to users located in areas unserved or underserved by the terrestrial infrastructure. The rapid development of terrestrial systems is pushing SATCOM companies to assess the exploitation of higher frequency bands (Q/V and maybe W) where larger bandwidths are available. This contribution proposes a possible configuration of a SATCOM system with European...
Consumers frequently get Internet access through a single home gateway. Gateways using conventional FIFO queue management can introduce hundreds or even thousands of milliseconds of additional delay when congested by bulk TCP data transfers. This delay impacts negatively on any latency-sensitive interactive traffic (such as Voice over IP, or First Person Shooter games). Such applications prefer network...
Multimedia streaming is a significant source of Internet traffic, with Netflix and YouTube accounting for more than 50% of North American fixed network peak download traffic in 2016. Dynamic Adaptive Streaming over HTTP (DASH) is a recent standard for live and on-demand video streaming services, where clients adapt the video quality on-the-fly to match the network capacity by requesting multi-rate...
Datacenters should provide bandwidth guarantees to tenants for performance predictability. Ideally, this process should attain three important characteristics: work conservation, fairness, and simplicity. The first one indicates that tenants can utilize unused bandwidths effectively without harming the bandwidth guarantee. The second one means that tenants share the unused bandwidth following a certain...
Based on analytical approach, a comparison between the conventional (single-fed) and dual-fed distributed amplifiers are presented for the power gains and the power delivered by each transistor. General formulas are developed and used for this comparison, showing that these ones may be particularized for each configuration of distributed amplifier analyzed in this paper. The analytical approach is...
In this paper, a 9-bit 1.3 GS/s single channel SAR ADC is presented. In conventional SAR ADCs, the capacitive DAC size grows exponentially with respect to converter resolution. This results in both signal bandwidth and conversion speed reduction. The proposed architecture implements binary search through a redundant capacitive DAC for the 5 first MSBs and through programmable comparator thresholds...
Multi-instrument based modern measuring devices have to deal with continuous and irregular data streams from the sensors. Usually remote measuring devices have to transmit data to another location through a single transmitter. Hence, there is a need for a Fair/non-greedy Arbiter, which guarantees transmitter bandwidth to all channels without allowing a single channel to dominate the bandwidth. The...
Owing to Ethernet's low cost, high bandwidth and architecture openness, much attention has been paid to develop converged Ethernet to support both time-critical services and conventional communication services on a unified network infrastructure. The greatest challenge here is providing low and deterministic latency for time-critical packets. Recently, the IEEE time sensitive networking task group...
the widespread availability of high-speed broadband Internet access brings online-enabled revenue model to gaming industry. However, Today’s Internet does not guarantee a quality level beyond best effort for the majority of applications used by home users. As a consequence, data flows transferred over the Internet can experience bandwidth constraints. At homes, this bandwidth constraint becomes more...
The paper aims to provide a high-level view of 5G fronthaul and backhaul wireless transport over millimeter wave (mmWave). In particular, an overview of data rate and latency requirements for three emerging fronthaul interfaces (functional split options) in addition to the backhaul will be given first. Then, the suitability of mmWave technology for transport of these fronthaul and backhaul traffics...
We report the impact of device design parameters on the saturation voltages (VDSAT) and thereby on analog performance of the Tunnel FETs (TFET). As the drain bias (VDS) increases, the device initially enters a soft saturation and later into a deep saturation state, both at a constant difference between the gate-drain bias (VGD)· An increase in source (drain) doping decreases (increases) the soft saturation...
Recurrent Neural Networks (RNNs) have the ability to retain memory and learn from data sequences, which are fundamental for real-time applications. RNN computations offer limited data reuse, which leads to high data traffic. This translates into high off-chip memory bandwidth or large internal storage requirement to achieve high performance. Exploiting parallelism in RNN computations are bounded by...
This paper introduces an efficient hardware accelerated feature extraction architecture with a high spec of 1920×1080 image resolution at 120 fps. We choose MoFREAK feature [1] to implement in our real-time action recognition system. MoFREAK is a local spatio-temporal feature, which combines the appearance and motion descriptor independently. We design a two phase architecture to balance the throughput...
Typically, in low-power and lossy networks nodes communicate with servers over the Internet. Nodes collaborate wirelessly to relay their data to a gateway. A large-scale network can have multiple gateways. Selecting a proper gateway can have an immense impact on the network's performance. In this paper, we present joint routing and gateway selection protocols for low-power and lossy networks. To analyse...
Traffic normalization, i.e. enforcing a constant stream of fixed-length packets, is a well-known measure to completely prevent attacks based on traffic analysis. In simple configurations, the enforced traffic rate can be statically configured by a human operator, but in large virtual private networks (VPNs) the traffic pattern of many connections may need to be adjusted whenever the overlay topology...
Satellite networking is known to suffer from specific network performance issues, such as high latency and low throughput stability; this derives mainly from the high propagation delay, in particular with GEO satellites. This characteristic poses limitations on the benefits that general AQM solutions could introduce; in fact, reducing congestion and mitigating queueing delay is a vital feature that...
A highly linear power amplifier (PA) at Ka-band is implemented in 28-nm bulk CMOS process. Operating at a deep class-AB mode with appropriate 2nd harmonic control circuit, a highly linear and efficient PA is designed at mmwave band. This PA architecture provides a linear PA operation closer to the saturated power, providing high efficiency. Also elaborated harmonic tuning and neutralization techniques...
Cognitive radio is an emerging technology that has been under heavy research in the recent years, as it is considered to be a promising solution for the spectrum scarcity problem. In the European Defense Agency's project Cognitive Radio for Dynamic Spectrum Management (CORASMA) a high precision cognitive radio simulation environment was developed based on an artificial UHF waveform. Target of that...
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