Abstract
Millimeter wave (mmWave) Device-to-device (D2D) communication is an attractive add-on component in 5G networks, since it enables to share the network load and improve spectrum efficiency by direct communication between nearby mobile devices. Mutual interference across different networks and different users is a crucial factor which affects the system performance necessitating to be properly considered in the system design. To better understand the effects of mutual interference, in this paper, we show mutual interference measurement results in an indoor office environment with D2D network deployment at the 60 GHz frequency band. Based on our measurements, some key impact factors, including transmitter and receiver beamwidths and positions as well as the number of active links are investigated. The results demonstrate that a decrease in the beamwidths of transmitter and receiver or a decrease in the number of active links can alleviate the mutual interference. Furthermore, it is exhibited that the interference in such D2D deployment environment is mainly dependent on the number of active links and a few active links among all active links dominate the mutual interference.
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