A Hybrid Power Line and TV White Space MIMO System for Indoor Broadband Communications

Broadband power line communication (BPLC) is a promising technology for indoor broadband communication networks. However, BPLC has restricted transmission power in the very high frequency (VHF) band in order to avoid harmful interference to existing wireless services. In this paper, a new hybrid multiple-input multiple-output (MIMO) system is proposed between BPLC and TV white space (TVWS) channels to enhance the system capacity over BPLC in VHF. In order to satisfy the interference limit at the TV primary user (PU) receiver (Rx), an iterative precoding algorithm is proposed to enhance the overall ergodic capacity. Simulation results verify the effectiveness of the proposed hybrid system over the previous cognitive BPLC system.