Energy efficient video telephony over UMTS

Author

Kodikara, C. ; Worrall, S. ; Kondoz, A.M.

Author_Institution

Centre for Commun. Syst. Res., Surrey Univ., Guildford, UK

Volume

5

fYear

2004

fDate

17-19 May 2004

Firstpage

2719

Abstract

A novel joint unequal error protection (UEP) and unequal power allocation (UPA) algorithm is proposed. UEP is performed through multiple radio bearers with different error correction capabilities. The perceived video quality is estimated based on the distortion calculation at the encoder. The transmission power on each bearer is controlled to maximize the expected perceived video quality for a given operating condition. The algorithm´s performance is evaluated for MPEG-4 coded video transmission over a simulated UMTS network. Simulation results show that the joint UEP and UPA scheme is more energy efficient than applying them individually.

Keywords

3G mobile communication; cellular radio; error correction; video streaming; videotelephony; MPEG4 coded video transmission; UMTS; direct-sequence CDMA cellular networks; encoder distortion calculation; energy efficient video telephony; error correction; joint UEP/UPA algorithm; multiple radio bearers; perceived video quality; unequal error protection; unequal power allocation; 3G mobile communication; Energy efficiency; Error correction; Error correction codes; Interference; MPEG 4 Standard; Motion compensation; Physical layer; Telephony; Video sequences;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2004. VTC 2004-Spring. 2004 IEEE 59th

ISSN

1550-2252

Print_ISBN

0-7803-8255-2

Type

conf

DOI

10.1109/VETECS.2004.1391415

Filename

1391415