Baig, I. and Jeoti, V. (2012) PAPR reduction in mobile WiMAX: A new ZCMT precoded random interleaved OFDMA system. Journal of Central South University of Technology (English Edition), 19 (4). pp. 988-993. ISSN 10059784
Full text not available from this repository.Abstract
Mobile WiMAX (worldwide interoperability for microwave access) air interface adopts orthogonal frequency division multiple access (OFDMA) as multiple access technique for its uplink (UL) and downlink (DL) to improve the multipath performance. All OFDMA based networks, like mobile WiMAX, experience the problem of high peak-to-average power ratio (PAPR). The high PAPR increases the complexity of analog-to-digital (A/D) and digital-to-analog (D/A) convertors, and also reduces the efficiency of RF high-power-amplifier (HPA). In this work, a new zadoff-chu matrix transform (ZCMT) precoding based random interleaved orthogonal frequency division multiple access (OFDMA) system was proposed for PAPR reduction in mobile WiMAX system. The system is based on precoding the constellation symbols with the ZCMT precoder before subcarrier mapping. The PAPR of proposed system is analyzed with the root-raised-cosine (RRC) pulse shaping to keep out of band radiation low and meet the transmission spectrum mask requirement. Simulation results show that the proposed system has better PAPR gain than the hadamard transform (WHT) precoded random interleaved OFDMA systems and the conventional random interleaved OFDMA systems. Symbol-error-rate (SER) performance of the system is also better than the conventional random interleaved OFDMA systems and the random interleaved OFDMA systems with WHT. The good improvement in PAPR significantly reduces the cost and the complexity of the transmitter. © 2012 Central South University Press and Springer-Verlag Berlin Heidelberg.
Item Type: | Article |
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Additional Information: | cited By 5 |
Uncontrolled Keywords: | Matrix transforms; Mobile WiMAX; Orthogonal frequency division multiple access; Peak to average power ratio; Pulse-shaping, Analog to digital conversion; Mobile telecommunication systems; Pulse shaping circuits; Wimax, Frequency division multiple access |
Depositing User: | Mr Ahmad Suhairi UTP |
Date Deposited: | 09 Nov 2023 15:51 |
Last Modified: | 09 Nov 2023 15:51 |
URI: | https://khub.utp.edu.my/scholars/id/eprint/3030 |