A Hybrid Approach to Reduce Peak-to-Average Power Ratio in Single-Carrier FDMA
Vikram Duhan1, Ritu2
1Vikram Duhan, Department of Electronics and Communication Engineering, Guru Jambheshwar University of Science and Technology, Hisar (Haryana), India.
2Ritu, Assistant Professor, Department of Electronics and Communication Engineering, Guru Jambheshwar University of Science and Technology, Hisar (Haryana), India.
Manuscript received on 11 August 2016 | Revised Manuscript received on 20 August 2016 | Manuscript Published on 30 August 2016 | PP: 26-29 | Volume-6 Issue-3, August 2016 | Retrieval Number: C2350086316/16©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Single-carrier frequency division multiple access (SC-FDMA) is an improved methodology over orthogonal frequency division multiple access (OFDMA), where input information is changed from time domain to frequency domain by Discrete Fourier Transform (DFT) before applying to conventional OFDMA procedure. By applying the DFT before passing it through the Inverse Discrete Fourier Transform (IDFT) it ensures that the subcarriers are orthogonal to each other which transmit signal as the single bearer signal stimulating the SC-FDMA. SC-FDMA results in reducing the Peak-to-average power ratio (PAPR) as compare to OFDMA. In this paper computational complexity of the framework is further reduced by utilizing composite of Hartley and Hilbert transformation as a part of DFT and IDFT operation. This technique improves SC-FDMA output performance measure parameters by attaining a remarkable balance between PAPR and bit error rate (BER) reduction. The simulation results depict that hybrid transformation technique have lower PAPR than Fast Fourier Transform (FFT).
Keywords: SC-FDMA, OFDMA, DFT, Hattley, Hilbert, Peak to-Average Power, Bit Error Rate (BER).
Scope of the Article: Low-power design