Wavelet-coded image transmission over land mobile radio channels

Liu, Y.-J.; Zhang, Y.-Q.

doi:10.1109/glocom.1992.276486

Cited by 4 publications

References 5 publications

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Layered image transmission over cellular radio channels

Zhang¹,

Liu²,

Pickholtz

1994

IEEE Trans. Veh. Technol.

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In this paper, a layered image transmission system is developed over cellular radio channels. The image coder is based on a multiresolution representation coupled with the I S 0 JPEG baseline coding standard. The multiresolution representation forms a pyramid in which information is layered in terms of different priorities that facilitates a more efficient use of forward error correction coding (FECI. After the error sensitivity analysis for different layers in an equalized mobile radio channel, an error control scheme based on block-interleaving and Bose-Chaudhuri-Hocquenghem (BCH) codes is proposed to minimize the effect of bursty channel errors on the picture quality degradation. Application of the new technique to the proposed Telecommunications Industry Association (TIA) Northern American digital cellular standard (IS-54) under different vehicle speeds with a signal-to-noise ratio of 22 dB is also investigated. Simulation results using a standard test image were presented to show the significant advantage of proposed approach.

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Layered image transmission over cellular radio channels

Zhang¹,

Liu²,

Pickholtz

1994

IEEE Trans. Veh. Technol.

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Scalable video coding and transport over broadband wireless networks

2001

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Abstract| With the emergence of broadband wireless networks and increasing demand of multimedia information on the Internet, wireless multimedia services are foreseen to become widely deployed in the next decade. Real-time video transmission typically has requirements on quality of service QoS. However, wireless channels are unreliable and the channel bandwidth varies with time, which may cause severe degradation to video quality. In addition, for video multicast, the heterogeneity of receivers makes it di cult to achieve e ciency and exibility. To address these issues, three techniques, namely, scalable video coding, network-aware adaptation of end systems, adaptive QoS support from networks, have been developed. This paper uni es the three techniques and presents an adaptive framework, which speci cally addresses video transport over wireless networks. The adaptive framework consists of three basic components: 1 scalable video representations, 2 network-aware end systems, and 3 adaptive services. Under this framework, as wireless channel conditions change, mobile terminals and network elements can scale the video streams and transport the scaled video streams to receivers with a smooth change of perceptual quality. The key advantages of the adaptive framework are: 1 perceptual quality is changed gracefully during periods of QoS uctuations and hando s; and 2 the resources are shared in a fair manner.

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Video transmission with error concealment over channels with memory

Srinivas¹

Proceedings of International Conference on Image Processing

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Wavelet-coded image transmission over land mobile radio channels

Cited by 4 publications

References 5 publications

Layered image transmission over cellular radio channels

Layered image transmission over cellular radio channels

Scalable video coding and transport over broadband wireless networks

Video transmission with error concealment over channels with memory

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