Soft-feedback MMSE equalization for non-orthogonal frequency division multiplexing (n-OFDM) signal detection by Ahmad, Norulhusna, Syed Yusof, Sharifah Kamilah, Fisal, Norsheila, Anwar, K., Matsumoto, T.

“…A frequency division multiplexing technique, nonorthogonal frequency division multiplexing (n-OFDM), is proposed in [1]- [2] to enhance the efficiency of bandwidth utilization. …”