A novel JSCC scheme for scalable video transmission over MIMO systems

International Conference on Information Photonics Pub Date : 2012-09-01 DOI:10.1109/ICIP.2012.6467350

Xinggong Zhang, Chao Zhou, Zongming Guo

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引用次数: 4

Abstract

MIMO recently emerges as one of promising techniques for wireless video streaming. It is still a challenge to provide un-equal error protections by joint source-channel coding (JSCC) over multiple diverse MIMO sub-channels. In this paper, a joint source-channel coding and antenna mapping scheme for scalable video transmission over MIMO systems is proposed. Bandwidth are elaborately allocated between video source and channel protections by layer extracting and FEC coding. For the extracted layers, we determine i) which antenna will they be transmitted over and ii) how much redundancy bits will be added for error protections. We formulate this scheme into a non-linear integer optimization problem, whose complexity is very high. Instead, a low-complexity branch-and-bound algorithm is presented. Source layers are partitioned into subsets of layers, and the selected layer are mapped to antennas using Min-max scheduling algorithm. By branching and pruning, the computation complexity are reduced significantly. We carry out extensive numerical experiments under various network conditions. The results demonstrate our algorithm's efficiency and the overall transmission quality is improved significantly.

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在MIMO系统上可扩展视频传输的一种新的JSCC方案

MIMO最近成为无线视频流的一种很有前途的技术。通过联合源信道编码(JSCC)在多个不同的MIMO子信道上提供不相等的错误保护仍然是一个挑战。本文提出了一种用于MIMO系统中可扩展视频传输的联合源信道编码和天线映射方案。通过层提取和FEC编码，在视频源和信道保护之间精心分配带宽。对于提取的层，我们确定i)它们将通过哪个天线传输，ii)将添加多少冗余位以进行错误保护。我们将该方案转化为一个非线性整数优化问题，其复杂度很高。提出了一种低复杂度的分支定界算法。将源层划分为层子集，采用最小-最大调度算法将所选层映射到天线上。通过分支和剪枝，大大降低了计算复杂度。我们在各种网络条件下进行了大量的数值实验。结果表明，该算法的效率和整体传输质量得到了显著提高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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International Conference on Information Photonics

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