On the two-user erasure broadcast channel with one-sided feedback
On the two-user erasure broadcast channel with one-sided feedback
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论单方面反馈的二用户擦除广播通道
DOI：
10.1109/itw.2017.8277978
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Sheng Yang
中科院分区：
文献类型：
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作者：
Chao He;Sheng Yang
在这篇文章中，我们研究了两用户擦除广播信道，其中只有一个接收者将输出反馈给发送者。我们提出了一种基于信源-信道联合编码的传输方案，并且证明了该信道的可达速率区域可以严格地大于已知的速率区域。特别地，所提出的方案是部分最优的，因为可达区域的边界与具有双边反馈的同一信道的容量区域的边界部分重叠。因此，我们确定了一个条件，在这个条件下，单边反馈和双边反馈一样好。我们的结果也证明了以前用于此类信道的逐位线性传输方案的局限性。
In this paper, we investigate the two-user erasure broadcast channel in which only one of the receivers feeds the output back to the transmitter. We propose a transmission scheme based on joint source-channel coding and show that the achievable rate region can be strictly larger than the ones previously known for this channel. In particular, the proposed scheme is partially optimal in the sense that the boundary of the achievable region overlaps in part with the boundary of the capacity region of the same channel with two-sided feedback. Thus, we identify a condition under which one-sided feedback is as good as two-sided feedback. Our result also demonstrates the limitation of bit-wise linear transmission schemes previously used for such channels.