TY - Journal of Beijing University of Posts and Telecommunications A1 - QIN Yun-hui, HUANGFU Wei, LONG Ke-ping T1 - Quaternion-Based Particle Swarm Optimization Algorithms for Mobile Communication Network Coverage Y1 - 2020-08-15 00:00:00.0 JF - Journal of Beijing University of Posts and Telecommunications JO - Journal of Beijing University of Posts and Telecommunications SP - 21 EP - 26 VL - 43 IS - 4 UR - {https://journal.bupt.edu.cn/EN/10.13190/j.jbupt.2019-260} N1 - 10.13190/j.jbupt.2019-260 ER -