| Paper: | SPCOM-P3.1 | ||
| Session: | Joint Source/Channel Coding and Quantization | ||
| Time: | Wednesday, May 19, 09:30 - 11:30 | ||
| Presentation: | Poster | ||
| Topic: | Signal Processing for Communications: Joint Source-Channel Coding | ||
| Title: | SCALABLE CROSS-LAYER RATE ALLOCATION FOR IMAGE TRANSMISSION OVER HETEROGENEOUS WIRELESS NETWORKS | ||
| Authors: | Wei Yu; University of Maryland, College Park | ||
| K. J. Ray Liu; University of Maryland, College Park | |||
| Zoltan Safar; IT University of Copenhagen | |||
| Abstract: | In this paper, we present an efficient real-time JPEG 2000 image transmission system over heterogeneous wireless networks. By exploiting the advantages of 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, 1.5dB gain in PSNR can be obtained for a fixed transmission rate of 0.5bpp, or 30\% transmission time can be saved under an end-to-end distortion constraint of 30dB in PSNR. | ||
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