Gaussian Broadcast Channel With Feedback
Gaussian Broadcast Channel With Feedback
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带反馈的高斯广播通道
DOI：
10.1109/tit.2008.929945
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发表时间：
2008
影响因子：
2.5
通讯作者：
Sibi Raj Bhaskaran
中科院分区：
文献类型：
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作者：
Sibi Raj Bhaskaran
对于高斯广播信道，已知的是：在存在来自所有接收器的反馈的情况下，容量区域通常被扩大;并且在物理降级的情况下，反馈不扩大容量区域。它示出了两个用户的高斯广播信道（GBC）的容量区域被扩大，即使反馈是从只有一个接收机。此外，在退化的情况下，充分的反馈，我们展示了一个明确的能力实现编码策略，与衰减的错误的双指数的传输特定于任何给定的消息的数量。
For a Gaussian broadcast channel, it is known that: the capacity region in general is enlarged in the presence of feedback from all the receivers; and in the physically degraded case, feedback does not enlarge the capacity region. It is shown that the capacity region of a two-user Gaussian broadcast channel (GBC) is enlarged even when the feedback is available from only one of the receivers. Furthermore, in the degraded case with full feedback, we demonstrate an explicit capacity achieving coding strategy, with the decay of error doubly exponential in the number of transmissions specific to any given message.