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首页> 外文期刊>Chinese Journal of Electronics >Towards Practical Distributed Video Coding for Energy-Constrained Networks
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Towards Practical Distributed Video Coding for Energy-Constrained Networks

机译：面向能源受限网络的实用分布式视频编码

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摘要

Most of current distributed video codecs are developed based on the structure of Stanford scheme that employs channel coding like LDPC and Turbo codes. However, they need many times of iteration and feedback, which bring high decoding complexity and latency that make them less practical in energy-constrained networks. In this paper, a new distributed video codec based on modulo operation in the pixel domain is proposed, which only needs one feedback request and has a much lower decoding complexity. Mathematical proof of the equivalence between modulo operation and coset partition in the M-ary field is given, which means that the modulo operation in the M-ary field is a good substitute for channel codes in the distributed video coding systems. A system is built based on the proposed scheme. Simulation results show that the proposed scheme outperforms the state-of-the-art distributed video codecs with the decoding complexity as low as 1% to 10% of them.
机译：当前大多数分布式视频编解码器都是基于Stanford方案的结构开发的，该结构采用了像LDPC和Turbo码这样的信道编码。但是，它们需要进行多次迭代和反馈，这带来了很高的解码复杂度和延迟，从而使它们在能量受限的网络中不太实用。本文提出了一种新的基于像素域模运算的分布式视频编解码器，该解码器只需要一个反馈请求，解码复杂度就大大降低。给出了M进制字段中模运算与陪集划分之间等效性的数学证明，这意味着M进制字段中的模运算可以很好地替代分布式视频编码系统中的信道码。基于提出的方案建立了一个系统。仿真结果表明，该方案优于最新的分布式视频编解码器，其解码复杂度低至1％至10％。

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