title   
  

Rate-distortion based real-time wireless video streaming

Seferoğlu, Hülya and Gürbüz, Özgür and Erçetin, Özgür and Altunbaşak, Yücel (2007) Rate-distortion based real-time wireless video streaming. (Accepted/In Press)

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Abstract

This paper presents wireless video streaming techniques that exploit the characteristics of video content, transmission history, and physical layer channels to enable real-time high quality video streaming over wireless networks to a wireless client. The key contribution of the proposed video streaming techniques is the use of rate-distortion based, but simplified, low complexity packet scheduling as well as Forward Error Correction (FEC) rate selection. To this end, we develop an optimization framework that jointly schedules the packets and selects the FEC rates. The rate-distortion optimized packet scheduling and FEC rate selection provides the optimum quality video on the receiver side albeit at a high computational cost. By some intelligent approximations, rate distortion optimized packet scheduling and FEC rate selection technique is transformed into two sub-optimal but low complexity video streaming techniques that can provide high video quality. We perform extensive simulations to understand the performance of our proposed techniques under di®erent scenarios. Results show that, the proposed techniques improve video quality on the average by 4 dB. We conclude that significant benefits to end-user experience can be obtained by using such video streaming methods.

Item Type:Article
Uncontrolled Keywords:Channel coding; error correction; multimedia streaming; packet scheduling; rate-distortion optimization; video coding; wireless networks.
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
ID Code:72
Deposited By:Özgür Erçetin
Deposited On:18 Jul 2007 03:00
Last Modified:24 Jun 2009 16:12

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