TY - JOUR
T1 - PAPR reduction in mobile WiMAX
T2 - A novel DST precoding based random interleaved OFDMA uplink system
AU - Baig, Imran
AU - Jeoti, Varun
AU - Ikram, Ataul Aziz
AU - Ayaz, Muhammad
PY - 2013/11/28
Y1 - 2013/11/28
N2 - 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.
AB - 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.
KW - Discrete-sine-transform matrix (DST)
KW - Hadamard transform (WHT)
KW - Mobile WiMAX
KW - Orthogonal frequency division multiple access (OFDMA)
KW - Root-raised-cosine (RRC)
UR - http://www.scopus.com/inward/record.url?scp=84903817274&partnerID=8YFLogxK
U2 - 10.1007/s11276-013-0671-0
DO - 10.1007/s11276-013-0671-0
M3 - Article
AN - SCOPUS:84903817274
SN - 1022-0038
VL - 20
SP - 1213
EP - 1222
JO - Wireless Networks
JF - Wireless Networks
IS - 5
ER -