A New Discrete Hartley Transform Precoding Based Interleaved-OFDMA Uplink System with Reduced PAPR for 4G Cellular Networks
High peak-to-average power ratio (PAPR) reduction is one of the major challenges in orthogonal frequency division multiple access (OFDMA) systems since last decades. High PAPR increases the complexity of analogue-to-digital (A/D) and digital-to-analogue (D/A) convertors and als...
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| Main Authors: | , |
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| Format: | Citation Index Journal |
| Published: |
School of Engineering. Taylor’s University
2011
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| Subjects: | |
| Online Access: | http://eprints.utp.edu.my/6992/1/Vol_6_6_685_694_imran_baig_mirza.pdf http://eprints.utp.edu.my/6992/ |
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| Institution: | Universiti Teknologi Petronas |
| Summary: | High peak-to-average power ratio (PAPR) reduction is one of the major challenges in orthogonal frequency division multiple access (OFDMA) systems since last decades. High PAPR increases the complexity of analogue-to-digital (A/D) and digital-to-analogue (D/A) convertors and also reduces the efficiency of RF highpower-
amplifier (HPA). In this paper, we present a new Discrete- Hartley transform (DHT) precoding based interleaved-OFDMA uplink system for PAPR reduction in the upcoming 4G cellular networks. Extensive computer simulations have been performed to analyze the PAPR of the proposed system with root-raised-cosine (RRC) pulse shaping. We also compare simulation results of the proposed system with the conventional interleaved-OFDMA uplink systems and the Walsh-Hadamard transform (WHT) precoding based interleaved-OFDMA uplink systems.
It is concluded from the computer simulations that the proposed system has low PAPR as compared to the conventional interleaved-OFDMA uplink systems and the
WHT precoded interleaved-OFDMA uplink systems. |
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