[CITASA] Contents of the latest issue of IJERTCS

Seppo Virtanen seppo.virtanen at utu.fi
Thu Feb 23 03:57:19 EST 2012

The contents of the latest issue of:

International Journal of Embedded and Real-Time Communication Systems 
Official Publication of the Information Resources Management Association
Volume 3, Issue 1, January – March 2012
Published: Quarterly in Print and Electronically
ISSN: 1947-3176 EISSN: 1947-3184
Published by IGI Publishing, Hershey-New York, USA

Editor-in-Chief: Seppo Virtanen, University of Turku, Finland

Special Theme Issue on Perspectives on Signal Processing Megatrends


“Special Theme Issue on Perspectives on Signal Processing Megatrends “

Tapani Ahonen, Tampere University of Technology, Finland
Seppo Virtanen, University of Turku, Finland

To read the preface, click on the link below, and then click on 
"Preface" in the 1st Quarter issue.


Scheduling, Binding and Routing System for a Run-Time Reconfigurable 
Operator Based Multimedia Architecture

Erwan Raffin, Caps-enterprise, France
Christophe Wolinski, IRISA/University of Rennes 1, France
François Charot, INRIA Rennes–Bretagne Atlantique, France
Emmanuel Casseau, IRISA/University of Rennes 1, France
Antoine Floc’h, INRIA Rennes–Bretagne Atlantique, France
Krzysztof Kuchcinski, Lund University, Sweden
Stéphane Chevobbe, CEA–LIST, France
Stéphane Guyetant, CEA–LIST, France

This article presents an integrated environment for application 
scheduling, binding and routing used for the run-time reconfigurable, 
operator based, ROMA multimedia architecture. The environment is very 
flexible and after a minor modification can support other reconfigurable 
architectures. Currently, it supports the architecture model composed of 
a bank of single (double) port memories, two communication networks 
(with different topologies) and a set of run-time functionally 
reconfigurable non-pipelined and pipelined operators. The main novelty 
of this work is simultaneous solving of the scheduling, binding and 
routing tasks. This frequently generates optimal results, which has been 
shown by extensive experiments using the constraint programming 
paradigm. In order to show flexibility of our environment, we have used 
it in this article for optimization of application scheduling, binding 
and routing (the case of the non-pipelined execution model) and for 
design space exploration (case of the pipelined execution model).

To obtain a copy of the entire article, click on the link below.

To read a PDF sample of this article, please visit


Design and Implementation of a Low-Complexity Multiuser Vector Precoder

Maitane Barrenechea, University of Mondragón, Spain
Luis Barbero, Queen’s University Belfast, UK
Mikel Mendicute, University of Mondragón, Spain
John Thompson, University of Edinburgh, UK

Precoding techniques are used in the downlink of multiuser 
multiple-input multiple-output (MIMO) systems in order to separate the 
information data streams aimed at scattered user terminals. Vector 
precoding (VP) is one of the most promising non-linear precoding 
schemes, which achieves a performance close to the optimum albeit 
impractical dirty paper coding (DPC) with a feasible complexity. This 
contribution presents a novel design for the hardware implementation of 
a high-throughput vector precoder based on the Fixed Sphere Encoder 
(FSE) algorithm. The proposed fixed-complexity scheme greatly reduces 
the complexity of the most intricate part of VP, namely the search for 
the perturbing signal in an infinite lattice. Additionally, an optimized 
reduced-complexity implementation is presented which considerably 
reduces the resource usage at the cost of a small performance loss. 
Provided simulation results show the better performance of the proposed 
vector precoder in comparison to other fixed-complexity approaches, such 
as the K-Best precoder, under similar complexity constraints.

To obtain a copy of the entire article, click on the link below.

To read a PDF sample of this article, please visit


Classification of Dataflow Actors with Satisfiability and Abstract 

Matthieu Wipliez, IETR/INSA, France
Mickaël Raulet, IETR/INSA, France

Dataflow programming has been used to describe signal processing 
applications for many years, traditionally with cyclo-static dataflow 
(CSDF) or synchronous dataflow (SDF) models that restrict expressive 
power in favor of compile-time analysis and predictability. More 
recently, dynamic dataflow is being used for the description of 
multimedia video standards as promoted by the RVC standard (ISO/IEC 
23001:4). Dynamic dataflow is not restricted with respect to expressive 
power, but it does require runtime scheduling in the general case, which 
may be costly to perform on software. The authors presented in a 
previous paper a method to automatically classify actors of a dynamic 
dataflow program within more restrictive dataflow models when possible, 
along with a method to transform the actors classified as static to 
improve execution speed by reducing the number of FIFO accesses (Wipliez 
& Raulet, 2010). This paper presents an extension of the classification 
method using satisfiability solving, and details the precise semantics 
used for the abstract interpretation of actors. The extended 
classification is able to classify more actors than what could 
previously be achieved.

To obtain a copy of the entire article, click on the link below.

To read a PDF sample of this article, please visit


Deadlock Free Routing Algorithm for Minimizing Data Packet Transmission 
in Network on Chip

K. Somasundaram, Amrita Vishwa Vidyapeetham, India, and University of 
Turku, Finland
Juha Plosila, University of Turku and Academy of Finland, Finland

Network on chip (NoC) has been proposed as a solution for addressing the 
design challenges of future high performance nanoscale architectures. In 
NoCs, the traditional routing schemes are routing packets through a 
single path or multiple paths from one source node to a destination 
node, minimizing the congestion in the routing architecture. Although 
these routing algorithms are moderately efficient, they are time 
dependent. To reduce overall data packet transmission time in the 
network, the authors consider a network with multiple sources and 
multiple destinations. Multi-dimensional routing problems appear 
naturally in several resource allocation problems, communication 
networks and wireless sensor networks. In this paper, the authors have 
constructed a deadlock-free multi-dimensional path routing algorithm for 
minimizing the congestion in NoC.

To obtain a copy of the entire article, click on the link below.

To read a PDF sample of this article, please visit

For full copies of the above articles, check for this issue of the 
International Journal of Embedded and Real-Time Communication Systems 
(IJERTCS) in your institution's library.  This journal is also included 
in the IGI Global aggregated "InfoSci-Journals" database:


Mission of IJERTCS:

The mission of the International Journal of Embedded and Real-Time 
Communication Systems (IJERTCS) is to disseminate recent advancements 
and innovations in this interdisciplinary research area for field 
researchers, practitioners, scientists, academicians, students, and IT 
professionals. IJERTCS focuses on overcoming challenges involved in the 
rapid development of embedded communication systems towards feature-rich 
multimedia computers

Coverage of IJERTCS:

The International Journal of Embedded and Real-Time Communication 
Systems (IJERTCS) extensively covers research in the area of embedded 
and real-time communication systems. Within this field, topics to be 
discussed in the journal include (but are not limited to) the following:

Asynchronous and synchronous circuit techniques
Design methods
Embedded networks (built-in networks in embedded communication devices)
Emerging new topics
Fault-tolerant hardware and software technologies
Formal design and verification methods
Hardware and software solutions for protocol processing
Hardware and software solutions for real-time systems
Hardware platforms and technologies
Hardware/software co-design
Modeling and verification methods
On-chip communication in SoC and NoC
OWA (open wireless architecture)
Performance modeling
Platform based design
Real-time computing
Reconfigurable systems
Security issues and technologies
Single-chip SDR (software defined radio) solutions
Software design
Testing techniques

Interested authors should consult the journal's manuscript submission 
guidelines at www.igi-global.com/ijertcs

All inquiries and submissions should be sent to:
Editor-in-Chief: Seppo Virtanen at seppo.virtanen at utu.fi

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