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PAPR reduction in mobile WiMAX: a novel DST precoding based random interleaved OFDMA uplink system

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Abstract

Mobile WiMAX is a 3rd generation broadband wireless technology that enables the convergence of mobile and fixed broadband networks through a wide area radio-access. Since January 2007, the IEEE 802.16 working group has been developing a new amendment the IEEE 802.16 standard i.e. IEEE 802.16 m as an advanced air interface to meet the requirements of ITU-R/IMT-Advanced for 4G systems. The mobile WiMAX air interface adopts orthogonal frequency division multiple access (OFDMA) as multiple access technique for its uplink and downlink to improve signal performance affected by multipath distortion. All OFDMA based networks, including mobile WiMAX, experience the problem of high peak-to-average power ratio (PAPR). This paper presents a discrete-sine-transform precoding technique based random-interleaved OFDMA (RI-OFDMA) uplink system for PAPR reduction in mobile WiMAX. The PAPR of proposed system is analyzed with root-raised-cosine pulse shaping filter to keep out of band radiation low and to fulfill the spectrum mask requirements. Simulation results show that, the proposed system has low PAPR compared to the Hadamard transform precoded RI-OFDMA uplink systems and the conventional RI-OFDMA uplink systems.

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Authors and Affiliations

  1. Department of Electrical Engineering, Federal Urdu University of Arts, Science and Technology, G-7/1, Islamabad, Pakistan

    Imran Baig

  2. Electrical and Electronic Engineering Department, Universiti Teknologi PETRONAS, Tronoh, 31750, Perak, Malaysia

    Varun Jeoti

  3. Department of Electrical Engineering, National University of Computer & Emerging Sciences, Islamabad, Pakistan

    Ataul Aziz Ikram

  4. Sensor Networks & Cellular Systems Research Center, University of Tabuk, Tabuk, KSA

    Muhammad Ayaz

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  1. Imran Baig
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  2. Varun Jeoti
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  3. Ataul Aziz Ikram
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  4. Muhammad Ayaz
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Correspondence to Imran Baig.

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Baig, I., Jeoti, V., Ikram, A.A. et al. PAPR reduction in mobile WiMAX: a novel DST precoding based random interleaved OFDMA uplink system. Wireless Netw 20, 1213–1222 (2014). https://doi.org/10.1007/s11276-013-0671-0

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  • DOI: https://doi.org/10.1007/s11276-013-0671-0

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