New Upper Bounds on the Capacity of Primitive Diamond Relay Channels

被引：3
|
作者：
Wu, Xiugang [1 ]
Ozgur, Ayfer [2 ]
Peleg, Michael [3 ]
Shamai , Shlomo [3 ]
机构：
[1] Univ Delaware, Newark, DE 19716 USA
[2] Stanford Univ, Stanford, CA 94305 USA
[3] Technion Israel Inst Technol, Haifa, Israel
来源：
2019 IEEE INFORMATION THEORY WORKSHOP (ITW) | 2019年
关键词：
D O I：
10.1109/itw44776.2019.8989311
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Consider a primitive diamond relay channel, where a source X wants to send information to a destination with the help of two relays Y-1 and Y-2, and the two relays can communicate to the destination via error-free digital links of capacities C-1 and C-2 respectively, while Y-1 and Y-2 are conditionally independent given X. In this paper, we develop new upper bounds on the capacity of such primitive diamond relay channels that are tighter than the cut-set bound. Our results include both the Gaussian and the discrete memoryless case and build on the information inequalities recently developed in [6]-[8] that characterize the tension between information measures in a certain Markov chain.
引用
收藏
页码：579 / 583
页数：5
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