Title :
Distribution of PAPR in LOFDM systems based on extreme value theory
Author :
Xu, Kui ; Zhang, Dongmei ; Xu, Youyun ; Lv, Zhenxing ; Liang, Wenwen
Author_Institution :
PLA Univ. of Sci. & Technol., Nanjing, China
Abstract :
The extreme value theory and the assumption that lattice orthogonal frequency division multiplexing (LOFDM) signal converges weakly to a Gaussian random process are employed to derive peak-to-average-power ratio (PAPR) in LOFDM systems. Two complementary cumulative distribution functions (CCDF) of LOFDM system with equal and unequal subcarrier power allocation are given, respectively. Computer simulations have been conducted, to validate the analytical results, showing a very good match between the identified PAPR distribution and that of real LOFDM signals. Our theoretical analysis is confirmed by numerical simulations that the PAPR problem of LOFDM systems is more deteriorative than that of standard OFDM systems.
Keywords :
Gaussian processes; OFDM modulation; numerical analysis; Gaussian random process; LOFDM systems; PAPR distribution; complementary cumulative distribution functions; equal power allocation; lattice orthogonal frequency division multiplexing; numerical simulations; peak-to-average-power ratio; unequal subcarrier power allocation; Analytical models; Dispersion; Peak to average power ratio; Resource management; Simulation; Time frequency analysis; LOFDM; complementary cumulative distribution function; extreme value theory; peak-to-average power ratio;
Conference_Titel :
Wireless Communications and Signal Processing (WCSP), 2011 International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4577-1009-4
Electronic_ISBN :
978-1-4577-1008-7
DOI :
10.1109/WCSP.2011.6096948
