论文标题
在中继网络中合作的好处
On the Benefit of Cooperation in Relay Networks
论文作者
论文摘要
这项工作涉及合作促进者（CF）模型，其中网络节点通过速率有限的通信设备协调。对于独立的多访问通道（MAC）编码器，即使合作率可以忽略不计，CF模型也会显示出明显的速率益处。具体而言，作为合作率$ c_ {cf} $的函数，Mac Sum-Rate的好处有时在$ C_ {CF} = 0 $的情况下具有无限斜率。这项工作研究了当应用于内部网络编码器时，通过CF合作是否可以产生类似的无限斜率益处的问题，在该编码中可以在无需CF的帮助下建立MAC发射器之间的依赖性。为此，这项工作研究了CF模型，当应用于单端，单端，钻石网络的中继节点，该节点由广播通道组成，然后是Mac。在带有正交接收器组件的继电器通道中，对CF模型的部分偏置/压缩 - 前向下限的仔细概括为无限斜率的益处提供了足够的条件。其他结果包括衍生钻石网络家族，当隔离研究时，无限斜率率效益直接源自相应的MAC分量的性质。
This work addresses the cooperation facilitator (CF) model, in which network nodes coordinate through a rate limited communication device. For independent multiple-access channel (MAC) encoders, the CF model is known to show significant rate benefits, even when the rate of cooperation is negligible. Specifically, the benefit in MAC sum-rate, as a function of the cooperation rate $C_{CF}$, sometimes has an infinite slope at $C_{CF}=0$. This work studies the question of whether cooperation through a CF can yield similar infinite-slope benefits when applied to internal network encoders in which dependence among MAC transmitters can be established without the help of the CF. Towards this end, this work studies the CF model when applied to relay nodes of a single-source, single-terminal, diamond network consisting of a broadcast channel followed by a MAC. In the relay channel with orthogonal receiver components, careful generalization of the partial-decode-forward/compress-forward lower bound to the CF model yields sufficient conditions for an infinite-slope benefit. Additional results include derivation of a family of diamond networks for which the infinite-slope rate-benefit derives directly from the properties of the corresponding MAC component when studied in isolation.
