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Scalable cross-layer rate allocation for image transmission over heterogeneous wireless networks

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3 Author(s)
Wei Yu ; Dept. of Electr. & Comput. Eng., Maryland Univ., College Park, MD, USA ; Liu, K.J.R. ; Safar, Z.

We present an efficient real-time JPEG 2000 image transmission system over heterogeneous wireless networks. By exploiting the advantages of the UDP-lite protocol and cross-layer optimization, the system can utilize the limited bandwidth more efficiently. Moreover, a scalable cross-layer rate allocation (SCRA) algorithm is proposed to perform the cross-layer optimization. The algorithm can manage a large number of adjustable parameters with low complexity. The simulation results show that by using the proposed method, 1.5 dB gain in PSNR can be obtained for a fixed transmission rate of 0.5 bpp, or 30% transmission time can be saved under an end-to-end distortion constraint of 30 dB in PSNR.

Published in:

Acoustics, Speech, and Signal Processing, 2004. Proceedings. (ICASSP '04). IEEE International Conference on  (Volume:4 )

Date of Conference:

17-21 May 2004