WSEAS Transactions on Communications
Print ISSN: 1109-2742, E-ISSN: 2224-2864
Volume 15, 2016
New Transceiver Scheme for FDMA Systems Based on Discrete Sine Transform
Authors: ,
Abstract: In this paper, the discrete sine transform (DST) as an orthogonal basis is used rather than the conventional discrete Fourier transform (DFT) to implement the orthogonal frequency division multiple access (OFDMA) system. The obtained system is called a DST-OFDMA system. The performance of the proposed DST-OFDMA system is studied and compared with the conventional discrete Fourier transform (DFT)-based OFDMA (DFT-OFDMA) system. The peak power problem in the proposed DST-OFDMA and in the recent DST-based SC-FDMA (DST-SC-FDMA) is also investigated and compared for different subcarriers mapping schemes and modulation formats. The impact of the radio resources allocation is also investigated at different roll-off factors. Simulation results show the improvement in the bit error rate (BER) of the proposed system over the conventional system by about 9 dB and 6 dB for interleaved and localized subcarriers mapping, respectively with quadrature phase shift keying (QPSK).
Search Articles
Pages: 369-377
WSEAS Transactions on Communications, ISSN / E-ISSN: 1109-2742 / 2224-2864, Volume 15, 2016, Art. #41