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Gaussian Broadcast Channel With Feedback

机译:带反馈的高斯广播频道

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摘要

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.
机译:对于高斯广播信道,已知的是:通常,在存在来自所有接收机的反馈的情况下扩大容量区域;在物理退化的情况下,反馈不会扩大容量区域。结果表明,即使只有一个接收器提供了反馈,两用户高斯广播信道(GBC)的容量区域也会扩大。此外,在具有完全反馈的性能下降的情况下,我们演示了一种显式的容量实现编码策略,其中对于任何给定消息特定的传输次数,错误的衰减都成倍增加。

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