Channel Tracking Performance of Zero Tail Discrete Cosine Transform Spread OFDM Waveform

In this paper, zero-tail discrete cosine transform spread OFDM (ZT DCT-S OFDM) waveform is proposed as an alternative to 5th generation (5G) waveform enhancement studies. In order to verify the performance of the proposed method and compare with the conventional OFDM and zero-tail discrete Fourier transform spread OFDM (ZT DFT-S OFDM) systems, computer simulations are performed on time invariant and time variant frequency selective Rayleigh fading channels. The obtained simulation results show that the proposed ZT DCT-S OFDM method has better bit error rate (BER) and channel tracking (carrier frequency offset, CFO) performance than conventional OFDM and ZT DFT-S OFDM systems.