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arXiv 1801.04558cs.ITmath.IT
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密集MIMO SWIPT网络中阻塞对象的影响

On the effect of blockage objects in dense MIMO SWIPT networks

Ayse Ipek Akin, Ivan Stupia, Luc Vandendorpe

摘要:

同时信息和功率传输(SWIPT)的特征在于多用户干扰的模糊作用。简而言之,多用户干扰对RF能量收集的有益效果是以降低链路容量为代价获得的,因此在可实现的信息速率和可收集的能量之间产生了重要的权衡。可以说,在室内环境中,这种权衡可能会受到墙壁等阻挡物体造成的传播损耗的影响。因此,出现了几个基本问题。网络元件必须密集到什么程度才能抵消阻塞衰减?阻塞总是对可实现的速率-能量权衡有害吗?在本文中,我们分析了室内多输入多输出(MIMO)SWIPT使能网络的性能,试图阐明这些问题。的障碍物的影响进行检查的帮助下,一个随机的方法,其中能量发射器(也称为动力头)位于通过使用泊松点过程和墙壁是通过曼哈顿泊松线过程产生的。研究了信号衰减和多用户干扰的随机特性,得到了信息速率和收获功率的联合互补累积分布函数(J-CCDF)。通过蒙特卡罗模拟验证了理论结果。最后,率-能量权衡作为墙壁频率的函数,以强调网络元件的部署和场地的拓扑结构之间的交叉依赖性。

英文摘要:

Simultaneous information and power transfer (SWIPT) is characterised by the ambiguous role of multi-user interference. In short, the beneficial effect of multi-user interference on RF energy harvesting is obtained at the price of a reduced link capacity, thus originating nontrivial trade-offs between the achievable information rate and the harvestable energy. Arguably, in indoor environments, this trade-off might be affected by the propagation loss due to blockage objects like walls. Hence, a couple of fundamental questions arise. How much must the network elements be densified to counteract the blockage attenuation? Is blockage always detrimental on the achievable rate-energy trade-off? In this paper, we analyse the performance of an indoor multiple-input multiple-output (MIMO) SWIPT-enabled network in the attempt to shed a light of those questions. The effects of the obstacles are examined with the help of a stochastic approach in which energy transmitters (also referred to as power heads) are located by using a Poisson Point Process and walls are generated through a Manhattan Poisson Line Process. The stochastic behaviour of the signal attenuation and the multi-user interference is studied to obtain the Joint Complementary Cumulative Distribution Function (J-CCDF) of information rate and harvested power. Theoretical results are validated through Monte Carlo simulations. Eventually, the rate-energy trade-off is presented as a function of the frequency of walls to emphasise the cross-dependences between the deployment of the network elements and the topology of the venue.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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