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

fYear

2011

fDate

9-11 Nov. 2011

Firstpage

1

Lastpage

5

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/WCSP.2011.6096948

Filename

6096948