Hybrid filtered multitone architecture for WLAN applications

In this paper we propose a novel hybrid multicarrier architecture for wireless LAN (WLAN) applications. We refer to this architecture as hybrid filtered multitone (HFMT). Depending on the experienced channel condition, H-FMT switches between short orthogonal FMT (SO-FMT) modulation, and adaptive orthogonal frequency division multiplexing (A-OFDM). Extensive numerical results show that H-FMT could significantly improve the capacity and the robustness of the WLAN standard that deploys conventional OFDM. Furthermore, its efficient implementation has a complexity that is comparable to that of OFDM.