Khaled Ramadan Basem M. ElHalawany Mohammed S. El-Bakry Performance improvement for DCO-OFDM and ACO-OFDM systems using symbol time compression. 77-100 2023 September 84 Telecommun. Syst. 1 https://doi.org/10.1007/s11235-023-01027-z db/journals/telsys/telsys84.html#RamadanEE23