The bistatic backscatter architecture, with its extended range, enables flexible deployment opportunities for backscatter devices. In this paper, we study the placement of power beacons (PBs) in bistatic backscatter networks to maximize the guaranteed coverage distance (GCD), defined as the distance from the reader within which backscatter devices are able to satisfy a given quality-of-service constraint. This work departs from conventional energy source placement problems by considering the performance of the additional backscatter link on top of the energy transfer link. We adopt and optimize a symmetric PB placement scheme to maximize the GCD. The optimal PB placement under this scheme is obtained using either analytically tractable expressions or an efficient algorithm. Numerical results provide useful insights into the impacts of various system parameters on the PB placement and the resulting GCD, plus the advantages of the adopted symmetric placement scheme over other benchmark schemes.

翻译：在本文中,我们研究了将电源信标(PB)放置在二乙基反向散射网络中的问题,以尽量扩大保证的覆盖范围距离(GCD),其定义是后散射装置能够满足特定服务质量限制的距离,与读者的距离。这项工作与传统的能源源布置问题不同,方法是考虑在能量传输连接上方增加的后散射链的性能。我们采用并优化了一种对称的PB布置计划,以最大限度地实现GCD。这个计划下的最佳PB布设是利用可分析可取的表达法或高效算法获得的。数字结果有助于了解各种系统参数对PB的布置和由此产生的GCD的影响,加上所采用的对称布置计划相对于其他基准计划的好处。