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Layered Randomized Cooperative Multicast for Lossy Data: A Superposition Approach

机译:用于有损数据的分层随机协同组播:叠加方法

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In this paper, we consider randomized distributed cooperation for multicasting a source signal with end-to-end distortion used as a performance metric. In order to provide differentiated quality to users with different channel strengths, we study layered cooperation where layers are transmitted simultaneously using superposition coding. We first formulate the problem and investigate the effect of power allocation of different layers on the distribution of end-to-end quality of users under a real-time delivery requirement. We then compare the proposed scheme with sequential layered transmission in which the layers are transmitted sequentially in time. Our results show that layered cooperation with superimposed layers outperforms sequential layered cooperation and provides a good alternative for multicast applications.
机译:在本文中,我们考虑了用于多播的随机分布式协作,该源信号具有作为性能度量的端到端失真。为了向具有不同信道强度的用户提供差异化​​的质量,我们研究层次的合作,其中使用叠加编码同时传输层。我们首先制定问题,并调查不同层功率分配对实时交付要求下用户端到端质量分布的影响。然后,我们将所提出的方案与顺序分层传输进行比较,其中层次地在时间顺序发送。我们的结果表明,与叠加层的分层合作优于连续分层合作,为多播应用提供了良好的替代方案。

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