Modern data-driven applications pose stringent requirements of high bandwidth, ultra-low-latency, low-powered, and scalable interconnections among switches routers in data-centers. To address these demands, electronic switching is not a viable choice due to bandwidth computing bottlenecks. Thus, researchers explored effective optical switch design principles for next-generation In switches, dat...

   Nowadays, one of the most important blocks in telecommunication circuits is the frequency synthesizer and the frequency multipliers. Phase-frequency detectors are the inseparable parts of these circuits. In this paper, it has been attempted to design two new structures for phase-frequency detectors in QCA nanotechnology. The proposed structures have the capability of detecting the phase ...

Weighted Fair Queuing (WFQ) is a packet scheduling technique that has been proposed and is currently used in modern network routers to provide end-to-end delay and bandwidth guarantees. Unfortunately the scalability of existing WFQ implementation techniques in large-scale backbone routers is relatively poor. Various approximation techniques have been proposed to improve WFQ's scheduling eecienc...

This work presents the design and evaluation of an adaptive packet router aimed at supporting CC-NUMA traffic. We exploit a simple and efficient packet injection mechanism to avoid deadlock, which leads to a fully adaptive routing by employing only three virtual channels. In addition, we selectively use output buffers for implementing the most utilized virtual paths in order to reduce head-of-l...

New protocols for the data link and network layer are being proposed to address limitations of current protocols in terms of scalability, security, and manageability. High speed routers and switches that would need to implement these protocols traditionally perform packet processing using ASICs which offer high speed, low chip area, and low power. But with inflexible custom hardware, the deploy...

This paper investigates contention resolution schemes for optical packet switching networks from an end-to-end perspective, where the combined exploitation of both core routers and edge routers are highlighted. For the optical-core network, we present the architecture of an optical router to achieve contention resolution in wavelength, time, and space domains. Complementing the solution involvi...

This work revisits the processing of stream joins on modern hardware architectures. Our work is based on the recently proposed handshake join algorithm, which is a mechanism to parallelize the processing of stream joins in a NUMA-aware and hardware-friendly manner. Handshake join achieves high throughput and scalability, but it suffers from a high latency penalty and a non-deterministic orderin...