IDFT Based Transmitters for Spectrally Efficient FDM System
نویسندگان
چکیده
Spectrally Efficient FDM systems (SEFDM) promise high bandwidth savings at the expense of increased complexity. In particular, SEFDM signal is generated using a bank of modulators running at the carriers' frequencies. In this paper two new methods to generate SEFDM signal based on utilizing IDFT are proposed. The methods facilitate the migration from conventional OFDM systems to SEFDM systems without the need to change existing infrastructures. The methods will support multi technique systems that combine SEFDM and OFDM for applications that include different QoS and when the available spectrum is not guaranteed.
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