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首页> 外文会议>2017 IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications >Capacity regions of a MAC with a wireless-powered relay-to-destination link under different relay strategies
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Capacity regions of a MAC with a wireless-powered relay-to-destination link under different relay strategies

机译：具有不同中继策略的无线中继到目标链路的MAC的容量区域

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摘要

We consider a two-user multiple access channel (MAC) with a wireless-powered relay-to-destination (RD) link, where the relay harvests energy from a radio frequency (RF) signal sent by a dedicated Power Beacon (PB). Each frame is divided into three phases. In the first phase, the relay harvests energy from an RF signal sent by a dedicated PB. The relay then receives information from user nodes in the second phase and forwards it to the destination in the third phase using its harvested energy. We investigate the sum rate maximization problem and characterize the capacity region of such a channel with the relay's maximum transmit power constraint, under both the amplify-and-forward (AF) and decode-and-forward (DF) relay strategies. Optimal solutions are obtained for both cases. It is interesting to find that the shape of the capacity region is still pentagonal with the wireless-powered relay. Finally, simulation results demonstrate the correctness of our analysis.
机译：我们考虑具有无线中继到目标（RD）链路的两用户多址访问信道（MAC），其中中继从专用功率信标（PB）发送的射频（RF）信号中收集能量。每个帧分为三个阶段。在第一阶段，中继从专用PB发送的RF信号中收集能量。然后，中继在第二阶段从用户节点接收信息，并使用其收集的能量将其转发到第三阶段的目的地。我们研究了总速率最大化问题，并在放大转发（AF）和解码转发（DF）中继策略下，用中继器的最大发射功率约束来表征这种信道的容量区域。两种情况下均获得最佳解。有趣的是，对于无线中继器，容量区域的形状仍然是五边形。最后，仿真结果证明了我们分析的正确性。

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