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arXiv 1101.2483cs.ITmath.IT
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高斯干扰信道容量在1比特内的可扩展性

On Achievability of Gaussian Interference Channel Capacity to within One Bit

Peyman Razaghi, Giuseppe Caire

摘要:

在本文的早期版本中,错误地声称需要分时来实现高斯干扰信道的容量区域在一个比特内,特别是在拐角点处。早期版本的论点中的缺陷在于为固定的公共/私有消息拆分编码策略修复了解码范例。更具体地说,如果我们强制公共消息总是在非预期的接收者处被解码,则会出现早期版本中的附加约束(7 b)和(7 d)。然而,(7 b)和(7 d)可以通过允许解码器忽略非预期的公共消息而被消除,特别是在速率区域的角点处,而不像在早期版本中所建议的那样在发送侧采取分时。由于这些原因,我们先前的索赔是无效的。

英文摘要:

In the earlier version of this paper, it was wrongly claimed that time-sharing is required to achieve the capacity region of the Gaussian interference channel to within one bit, especially at corner points. The flaw in the argument of the earlier version lies in fixing the decoding paradigm for a fixed common/private message splitting encoding strategy. More specifically, the additional constraints (7b) and (7d) in the earlier version arise if we force the common messages to be always decoded at unintended receivers. However, (7b) and (7d) can be eliminated by allowing the decoders to ignore unintended common messages, particularly at corner points of the rate region, without resorting to time-sharing at the transmit side, as suggested in the earlier version. For these reasons, our earlier claim is invalid.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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