Blind Adaptive Array Interference Suppression in LTE-WLAN Coexistence Environment

This paper investigates a potentiality of spectrum superposing in different systems through blind adaptive array (BAA) interference suppression. Various kinds of wireless communication systems are widely deployed such as LTE and Wireless LAN (WLAN). Mobile traffic is increasing due to services like video streaming on smartphones, leading to a shortage of spectrum resources in the microwave band. With the growing demand for wireless communication, efficient use of limited spectrum resources is required. In this paper, we conduct a link-level simulation of interference suppression of two orthogonal frequency division multiplexing (OFDM) based different systems, i.e. LTE and WLAN, using BAAs which does not require prior knowledge of interfering signals. We demonstrate that the spectrum efficiency can be improved by up to 53%.