naa a22 4500 510794866 CHVBK 20180411083332.0 cr unu---uuuuu 180411e20130401xx s 000 0 eng 10.1007/s11277-012-0660-0 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0660-0 A New Transceiver Scheme for OFDMA System Based on Discrete Cosine Transform and Phase Modulation [Elektronische Daten] [Farouk Al-fuhaidy, Hossam Hassan, Khairy El-barbary] A high peak-to-average power ratio of the transmit signal is a major drawback of multicarrier transmissions, such as orthogonal frequency division multiplexing (OFDM) and orthogonal frequency division multiple access (OFDMA). An alternative approach to mitigate the peak-to-average power ratio (PAPR) problem is based on signal transformation using phase modulation (PM). A phase modulation based systems have the advantage of constant envelope (CE) signals and the ability to improve the diversity of multipath channels. In this paper, a different implementation of discrete Fourier transform DFT-OFDMA system which is based on discrete cosine transform (DCT) is proposed. The DCT-OFDMA system is then used to develop a new transceiver system called DCT-OFDMA-PM which refers to discrete cosine OFDMA with phase modulation. The PM input signal to be modulated must be real which can be produced using DCT-OFDMA with pulse amplitude modulation (M-PAM). The new system involves a signal transformation prior to amplification. This gives the advantage of CE (i.e. 0dB PAPR). The proposed system is implemented with frequency domain equalization (FDE) to obtain high diversity gains over the frequency multipath channel. Simulation the PM-based systems with multipath fading can outperform that with single path fading. Springer Science+Business Media, LLC., 2012 OFDMA nationallicence PAPR nationallicence PM nationallicence DFT nationallicence DCT nationallicence M-PAM nationallicence FDE nationallicence Al-fuhaidy Farouk Department of Electrical Engineering, Military Technical College, Cairo, Kobry Elkobba, Egypt aut Hassan Hossam Department of Electrical Engineering, Military Technical College, Cairo, Kobry Elkobba, Egypt aut El-barbary Khairy Department of Electrical Engineering, Future Academy, Cairo, Egypt aut Wireless Personal Communications Springer US; http://www.springer-ny.com 69/4(2013-04-01), 1735-1748 0929-6212 69:4<1735 2013 69 11277 https://doi.org/10.1007/s11277-012-0660-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0660-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Al-fuhaidy Farouk Department of Electrical Engineering, Military Technical College, Cairo, Kobry Elkobba, Egypt aut NATIONALLICENCE 700 1- Hassan Hossam Department of Electrical Engineering, Military Technical College, Cairo, Kobry Elkobba, Egypt aut NATIONALLICENCE 700 1- El-barbary Khairy Department of Electrical Engineering, Future Academy, Cairo, Egypt aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 69/4(2013-04-01), 1735-1748 0929-6212 69:4<1735 2013 69 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer