System design and implementation of multiple-symbol encapsulated OFDM

A new multicarrier system, termed multi-symbol encapsulated orthogonal frequency division multiplexing (MSE-OFDM), was proposed, in which one cyclic prefix (CP) is used for multiple OFDM symbols. The motivations for this new transmission technique are either to reduce the redundancy caused by the CP or to increase the system robustness to frequency offset, depending on the two different proposed implementations. In this paper, the system design and implementation issues for the MSE-OFDM system are investigated, including the buffer and fast-Fourier transformation (FFT) size requirement for the receiver and transmitter. An iterative block equalizer for MSE-OFDM receiver is proposed, based on N point FFT/IFFT instead of MN points. The receiver complexity is substantially reduced due to the reduced FFT size.