Analysis on interference impact of LTE on DTV

Abstract

TV White Spaces (TVWS) are freed up after transition from analog television to Digital Television (DTV). Some wireless communications are allowable to operate in TVWSs. Because TVWSs are located in the VHF and UHF bands, TVWSs can provide significantly better coverage and wall penetration inside buildings. Therefore, this paper assumes that Long Term Evolution (LTE) will be deployed in TVWSs. However, the interference impact of LTE on DTV has to be taken into account. Spectrum Engineering Advanced Monte-Carlo Analysis Tool (SEAMCAT) to get guard band and protection distance through 5% interference probability are used. As a result, if 4 MHz guard band is required, when the assumed emission mask of LTE BS is used, the protection distance is reduced to 2 km. If the assumed emission mask of LTE MS is used, the protection distance between the reference LTE MS and DTV receiver is 0 when the guard band is 8 MHz. The analysis results may offer a reference and be helpful for considering interference between DTV and other communication systems. © 2011 Springer-Verlag.