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Tag Archive: 2016 Ns2 Projects

Runtime and Architecture Support for Efficient Data Exchange in Multi-Accelerator Applications

Heterogeneous parallel computing applications often process large data sets that require multiple GPUs to jointly meet their needs for physical memory capacity and compute throughput. However, the lack of high-level abstractions in previous heterogeneous parallel programming models force programmers to resort to multiple code versions, complex data copy steps and synchronization schemes when exchanging data […]

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A Distributed Resource Reservation Scheme for Handover Failure Reduction

In this letter, we propose a distributed resource reservation strategy for handover failure (HOF) reduction. The network status information that is locally available at each cell is utilized to reserve handover protection (HOP) resources in a dynamic and distributed manner. Each cell transmits downlink traffic using only the reserved HOP resources. Severe interferences to the neighboring cells […]

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Discriminative spectral learning of hidden markov models for human activity recognition

Hidden Markov Models (HMMs) are one of the most important techniques to model and classify sequential data. Maximum Likelihood (ML) and (parametric and non-parametric) Bayesian estimation of the HMM parameters suffers from local maxima and in massive datasets they can be specially time consuming. In this paper, we extend the spectral learning of HMMs, a […]

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Micropatterning of multiple photonic colloidal crystals in single-layered microchannels for structural-color optical filter

We describe a simple and rapid micropatterning method of multiple types of photonic colloidal crystals (PCCs) on a single substrate for an optical color filter of a reflective display. We developed a “Channel-Cut Method” to introduce multiple colloidal suspensions selectively and sequentially into a microchannelnetwork. By combining this method with centrifugal crystallization, we succeeded in […]

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To each according to his needs: Dimensioning video buffer for specific user profiles and behavior

Today’s video streaming platforms offer videos in a variety of quality settings in order to attract as many users as possible. But even though a sufficiently dimensioned network can not always be provided for the best experience, users are asking for high QoE. Users consume the content of a video streaming platform in different ways, while video […]

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How to Make Quasi-Rectilinear Signals (MSK, GMSK, OQAM) Almost Equivalent to Rectilinear Ones (BPSK, ASK) for Widely Linear Filtering in the Presence

Widely linear (WL) receivers are able to fulfill single antenna interference cancellation (SAIC) of one rectilinear (R) or quasi-rectilinear (QR) co-channel interference (CCI), a function which is operational in GSM handsets in particular. However, SAIC requires enhancements for QR signals, for both VAMOS standard, an evolution of GSM/EDGE standard, and FBMC-OQAM networks, which are candidate for […]

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Improved finite-length Luby-transform codes in the binary erasure channel

Fountain codes were introduced to provide high reliability and scalability and low complexities fornetworks such as the Internet. Luby-transform (LT) codes, which are the first realisation of Fountain codes, achieve the capacity of the binary erasure channel (BEC) asymptotically and universally. Most previous work on single-layer Fountain coding targets the design via the right degree distribution. […]

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A 512×512-cell associative CAM/Willshaw memory with vector arithmetic

In this paper we present a CMOS implementation of a 512×512-cell Associative Content Addressable Memory (ACAM) in 180 nm CMOS. The memory can be operated either as an associative CAM or it can be configured into a Willshaw memory for operating with sparse data. The vector matching operation can use a tunable hit threshold or […]

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A Split MAC Approach for SDR Platforms

Implementation of carrier sensing-based medium access control (MAC) protocols on inexpensive reconfigurable radio platforms has proven challenging due to long and unpredictable delays associated with both signal processing on a general purpose processor (GPP) and the interface between the radio frequency (RF) front end and the GPP. This paper describes the development and implementation of […]

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On the distributed acoustic sensing based on local time-frequency coherence analysis

This paper outlines novel approaches to design a new generation of distributed networks of acoustic sensors. The key-concept is marked by the use of time-frequency signal analysis tools directly embedded at the sensor node. The general framework for analysis at the acoustic sensor level is based on spectrogram which is very simple and easy to implement. The […]

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