Mitigating cellular interference in uplink UAV communications

• Main Authors: Tan, Ernest Zheng Hui, Madhukumar, A.S., Sirigina, Rajendra Prasad, Krishna, Anoop Kumar
• Other Authors: School of Computer Science and Engineering
• Format: Conference or Workshop Item
• Language: English
• Published: 2021
• Subjects: Engineering::Computer science and engineering; Unmanned Aerial Vehicle; Bit Error Rate
• Online Access: https://hdl.handle.net/10356/146720
• Institution: Nanyang Technological University

In this paper, we demonstrate the necessity of robust cellular interference cancellation when co-locating uplink (UL) unmanned aerial vehicle (UAV) communications with cellular networks. Through a stochastic geometry based evaluation framework, we show through bit error rate (BER) and ergodic capacity analysis that multi-user interference (MUI) is the main limiting factor in UL UAV communications after cellular interference cancellation. It is also observed that high altitudes and weak residual cellular interference corresponds to lower BER. In contrast, low altitudes and weak residual cellular interference results in higher ergodic capacity. Hence, advanced interference cancellation techniques should be considered to suppress the presence of strong MUI in the multi-UAV network.