Naslov
An Unequal Error Protection Scheme for Object Based Video Communications

Autori
Nasir, Sabih ; Worrall, Stewart ; Mrak, Marta ; Kondoz, Ahmet

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
2008 IEEE International Symposium on Consumer Electronics, ISCE 2008 / - , 2008, 1-4

ISBN
978-1-4244-2422-1

Skup
2008 IEEE International Symposium on Consumer Electronics, ISCE 2008

Mjesto i datum
Algarve, Portugal, 14.04.2008. - 16.04.2008

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Joint Source Channel Rate Allocation; Unequal Error Protection; Distortion Modelling

Sažetak
This paper presents a novel adaptation technique for optimisation of the source and error protection rates in response to varying channel conditions in wireless networks. The optimisation methodology is based on accurate modelling of video frame distortion at the encoder. An optimal value for the quantisation parameter is calculated for video frames based on these estimates, and then video packets are mapped to one of a number of different priority radio bearers, according to their expected distortion. The algorithm performance is demonstrated for object based MPEG-4 video transmission over a UMTS/FDD system. The results demonstrate that a significant performance gain is achieved with the proposed scheme, compared with the equal error protection scheme for video transmission over a fixed bandwidth channel.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika, Računarstvo

POVEZANOST RADA