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In the last years, the integration of specialized hardware accelerators in Multiprocessor System-on-Chip (MpSoC) led to a new kind of architectures combining both software (SW) and hardware (HW) computational resources. For these new Heterogeneous MpSoC (HMpSoC) architectures, performance and energy consumption depend on a large set of parameters such as the HW/SW partitioning, the type of HW implementation...
The Software Communications Architecture (SCA) is a software architecture provided and published by the Joint Tactical Networking Center (JTNC). Facing the multiplicity of the waveforms and the diversity of the platform architectures and form factors, the original aims of the SCA are to facilitate the waveform development in terms of portability and waveform deployments onto heterogeneous Software...
This paper addresses the current regulatory framework, main research activities and standardization efforts towards a shared use of radio spectrum in the European Union. A survey of emerging spectrum sharing applications and associated standardization paths is described. Remaining challenges for an effective participation of research projects in Cognitive Radio standards are discussed. A new coordination...
This paper addresses the current regulatory framework, research activities and standardization efforts towards a shared use of radio spectrum in the European Union. Two main research streams are considered: The emerging concept of Licensed Shared Access that ensures a predictable Quality of Service for secondary users of spectrum and the opportunistic Device-to-Device communications that represent...
The goal of this paper is to identify primary (licensed) users when the secondary (non-licensed) system is transmitting without Quiet Period in the same frequency band. The paper further presents the LTE operating in TV channels, where DVB-T and PMSE transmitters are considered as primary users by default. In this context, the LTE system is acting as a secondary system which during a first step i)...
This paper proposes a novel architecture and configuration scheme for single-node spectrum sensing. It is assumed that the sensing node may use more than one sensing algorithms. The proposed sensing architecture allows a dynamic algorithm selection that depends on the sensing configuration parameters, and it includes a regulatory conformance checking. As a result, local sensing is enhanced by dynamic...
This paper presents a reconfigurable Multi-Core Crypto-Processor MCCP) especially designed to secure multi-channel and multi-standard communication systems. Such component meets many constraints like high throughput and flexibility. In contrast, a classical mono-core approach either provides limited throughput or does not allow simple management of multi-channel streams. Nevertheless, parallelism...
This paper presents an efficient way to ensure a good detection performance by implementing algorithms running in background a reliable noise estimation process. The proposed solution operates at two different time scales: a slow time scale to determine in adjacent sub-bands the supposed slowly varying noise level, and a faster time scale to determine in the band of interest the presence of signal,...
This paper presents an in-depth analysis of the behavior of a SCA component-based waveform application in terms of ??inter-component?? communication latency. The main limitation with SCA, in the context of embedded systems, is the additional cost introduced by the use of CORBA. Previous studies have already defined the major metrics of interest regarding this issue, these are CPU cost, memory requirements...
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