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arXiv 1802.01231cs.ITmath.IT
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具有能源回收功能的MIMO

MIMO with Energy Recycling

Y. Ozan Basciftci, Amr Abdelaziz, C. Emre Koksal

摘要:

我们考虑一个多输入单输出(MISO)点对点通信系统中,发射机的设计,使得每个天线可以在任何给定的时间点发送信息或收获能量。我们评估的平均传输功率约束下,通过这样的能量回收MISO系统的可实现的速率。我们的可实现方案仔细地在传输和无线收获之间切换天线的模式,其中大部分收获发生在相邻天线的传输中,即,回收利用。我们表明,与回收,有可能超过经典的非收获对应的能力。由于可实现的算法的复杂度是指数天线的数量,我们还提供了一个几乎线性的算法,具有最小的可实现的速率退化。为了解决回收的能力和天线耦合的影响的主要问题,我们还开发了一个4天线发射机的硬件设置和实验结果,基于一个均匀的线性阵列(UWB)。我们证明,由于天线耦合的速率的损失可以忽略不计,有足够的天线间距,并提供硬件测量的功率回收从发射天线和接收的功率在目标接收器,同时进行。我们根据实际测量结果提供精确的性能测量结果。

英文摘要:

We consider a Multiple Input Single Output (MISO) point-to-point communication system in which the transmitter is designed such that, each antenna can transmit information or harvest energy at any given point in time. We evaluate the achievable rate by such an energy-recycling MISO system under an average transmission power constraint. Our achievable scheme carefully switches the mode of the antennas between transmission and wireless harvesting, where most of the harvesting happens from the neighboring antennas' transmissions, i.e., recycling. We show that, with recycling, it is possible to exceed the capacity of the classical non-harvesting counterpart. As the complexity of the achievable algorithm is exponential with the number of antennas, we also provide an almost linear algorithm that has a minimal degradation in achievable rate. To address the major questions on the capability of recycling and the impacts of antenna coupling, we also develop a hardware setup and experimental results for a 4-antenna transmitter, based on a uniform linear array (ULA). We demonstrate that the loss in the rate due to antenna coupling can be made negligible with sufficient antenna spacing and provide hardware measurements for the power recycled from the transmitting antennas and the power received at the target receiver, taken simultaneously. We provide refined performance measurement results, based on our actual measurements.

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