Joint oversampling FDM demultiplexing and perfectly reconstructing SBC filter bank for two channels
Heinz G. Göckler, Mohammed N. Abdulazim · 2005
Within modern satellite communication scenarios, different users demand different bandwidths. Hence, digital processors should allow for flexible processing of FDM-signals for meeting these requirements. In that scope, two mutually exclusive processor tasks are distinguished: i) mere demultiplexing of independent FDMsignals and ii) demultiplexing of wideband channel signals with subsequent perfect reconstruction. In this paper, we present a matrix description of the well-known FDMUX filter bank [1] for two channels based on directional filter cells with reduced computational burden. Furthermore, we extend the improved approach to a novel joint SBC-FDFMUX filter bank structure, which combines both demanded tasks without extra computation compared to [1]. 1.