On the Sum Capacity of the Gaussian X Channel in the Mixed Interference Regime

被引：0

作者：

Kumar, Praneeth, V ^{[1
]}

Bhashyam, Srikrishna ^{[2
]}

机构：

[1] ISRO Satellite Ctr, Bangalore 560017, Karnataka, India

[2] Indian Inst Technol, Dept Elect Engn, Madras 600036, Tamil Nadu, India

来源：

2015 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY (ISIT) | 2015年

关键词：

Gaussian X channel; sum capacity; mixed interference; genie-aided bound; multiple access; ALIGNMENT; FREEDOM; NETWORKS; BOUNDS;

D O I：

暂无

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

In this paper, we analyze the Gaussian X channel in the mixed interference regime. In this regime, multiple access transmission to one of the receivers is shown to be close to optimal in terms of sum rate. Three upper bounds are derived for the sum capacity in the mixed interference regime, and the subregions where each of these bounds dominate the others are identified. The genie-aided sum capacity upper bounds derived also show that the gap between sum capacity and the sum rate of the multiple access transmission scheme is small for a significant part of the mixed interference region. For any delta > 0, the region where multiple access transmission to one of the receivers is within delta from sum capacity is determined.

引用

页码：611 / 615

页数：5

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