CAJ | 학술논문

在大型建筑底层及偏远地区等，传统的蜂窝网系统没有提供可靠的无线覆盖。该文采用中继方式延伸基站的无线覆盖至目标区域。主要研究最优的中继部署与功率分配最小化目标区域的最大中断概率。功率分配是指在总功率受限的情况下，最优化基站和中继的发送功率。通过分析可以得到最优的中继部署，基站和中继发送功率的比值不随总功率的增加而变化。针对优化问题的非凸性质，提出了一种获得局部最优解的算法。通过仿真可得给出算法的性能与穷搜索算法的性能基本重合。由于给出算法的复杂度较低，更适用于实际的系统。
재대형건축저층급편원지구등，전통적봉와망계통몰유제공가고적무선복개。해문채용중계방식연신기참적무선복개지목표구역。주요연구최우적중계부서여공솔분배최소화목표구역적최대중단개솔。공솔분배시지재총공솔수한적정황하，최우화기참화중계적발송공솔。통과분석가이득도최우적중계부서，기참화중계발송공솔적비치불수총공솔적증가이변화。침대우화문제적비철성질，제출료일충획득국부최우해적산법。통과방진가득급출산법적성능여궁수색산법적성능기본중합。유우급출산법적복잡도교저，경괄용우실제적계통。
There is often no cellular connection in the basement level of large buildings and in remote unpopulated areas. In this paper, a relay is deployed to extend the wireless coverage of a base station to a target area. Models, analytical results, and algorithms are proposed to study the optimal relay position and power allocation for minimizing the maximum outage probability over the entire area. Based on the analysis, as the total transmit power of the base station and relay increases, the optimal relay position and the transmit power ratio of the base station and relay remain the same. The complexity of the proposed algorithm is much lower than, but it achieves almost the same performance as that of the exhaustive searching method based on numerical simulations, which is more suitable for the practical system.