Adaptive Error Resilient Mechanisms for Real-Time Multimedia Streaming over Inter-Vehicle Communication Networks - Digital Signal Processing for In-Vehicle Systems and Safety - page 279

Chapter 21
Adaptive Error Resilient Mechanisms
for Real-Time Multimedia Streaming over
Inter-Vehicle Communication Networks
Matteo Petracca, Paolo Bucciol, Antonio Servetti,
and Juan Carlos De Martin
Abstract To allow real-time streaming of loss tolerant flows such as multimedia
streams in inter-vehicle communication network, we propose a cross-layer tech-
nique based on proactive error correction and interleaving algorithms. The proposed
technique optimizes the FEC/interleaving channel coding parameters based on
network layer information under real-time constraints. It is implemented at packet
level to allow a straightforward adaption in the existing wireless devices. By
resorting to standard compliant, real-time RTCP reports, we also develop and
optimize an adaptive technique that is able to match fast channel variations and
reduce both the overhead required by the proactive error recovery scheme and the
additional delay introduced by the interleaver. Simulations based on Gilbert-Elliott
wireless channel model show that the proposed adaptive technique without
optimizations is able to gain over 0.9 dB in terms of video PSNR with respect to
the standard transmission, while in its optimized version, the gain is over 1.5 dB
PSNR, with a total overhead of about 12%.
Keywords Forward Error Correction (FEC) • Inter-vehicle communication
networks • Inter-vehicle multimedia • Multimedia signal processing • VANETs
M. Petracca ( * )
Scuola Superiore Sant'Anna di Pisa, Pisa, Italy
e-mail: [e-mail]
P. Bucciol
French-Mexican Laboratory of Informatics and Automatic Control
(UMI LAFMIA 3175 CNRS), San Andr´s Cholula, Puebla, Mexico
e-mail: [e-mail]
A. Servetti • J.C. De Martin
Politecnico di Torino, Torino, Italy
e-mail: [e-mail] ; [e-mail]