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arXiv 1701.07576cs.ITmath.IT
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一类部分连通干扰信道的近似容量

Approximate Capacity of a Class of Partially Connected Interference Channels

Muryong Kim, Yitao Chen, Sriram Vishwanath

摘要:

我们推导出一类三用户部分连通干扰信道容量区域的内界和外界。我们专注于拓扑结构的影响,干扰对齐,干扰和噪声之间的相互作用。我们考虑的代表性信道是具有明显干扰对准增益的信道。对于这些通道,Z通道类型的外部边界紧密到与容量的恒定间隙内。我们提出了近最佳的可实现的方案的基础上率分裂和晶格对齐。

英文摘要:

We derive inner and outer bounds on the capacity region for a class of three-user partially connected interference channels. We focus on the impact of topology, interference alignment, and interplay between interference and noise. The representative channels we consider are the ones that have clear interference alignment gain. For these channels, Z-channel type outer bounds are tight to within a constant gap from capacity. We present near-optimal achievable schemes based on rate-splitting and lattice alignment.

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