Interleaved orthogonal frequency division multiplexing system

A new orthogonal frequency division multiplexing (OFDM) system for wireless communications over frequency selective fading channels is presented. The proposed interleaved orthogonal frequency division multiplexing (IOFDM) system promises higher code rate as compared to the conventional OFDM system without bandwidth expansion and with very slight increase in computational complexity. Simulation results verify that the performance, in terms of bit error rate, of the proposed IOFDM system is very close to the conventional OFDM system.