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

被引:0
|
作者
Imran Baig
Varun Jeoti
Ataul Aziz Ikram
Muhammad Ayaz
机构
[1] Federal Urdu University of Arts,Department of Electrical Engineering
[2] Science and Technology,Electrical and Electronic Engineering Department
[3] Universiti Teknologi PETRONAS,Department of Electrical Engineering
[4] National University of Computer & Emerging Sciences,Sensor Networks & Cellular Systems Research Center
[5] University of Tabuk,undefined
来源
Wireless Networks | 2014年 / 20卷
关键词
Mobile WiMAX; Orthogonal frequency division multiple access (OFDMA); Discrete-sine-transform matrix (DST); Root-raised-cosine (RRC); Hadamard transform (WHT);
D O I
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中图分类号
学科分类号
摘要
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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页码:1213 / 1222
页数:9
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