Open AccessReducing PAPR of SC‐FDMA Signals through Simple Amplitude Predistortion
Author(s) -
Xia Yujie,
Ji Jinwei
Publication year - 2015
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.15.0114.1194
Subject(s) - transmitter , predistortion , signal (programming language) , amplitude , frequency division multiple access , bit error rate , reduction (mathematics) , orthogonal frequency division multiplexing , power (physics) , computer science , electronic engineering , algorithm , mathematics , telecommunications , engineering , physics , bandwidth (computing) , optics , decoding methods , channel (broadcasting) , amplifier , geometry , quantum mechanics , programming language
A novel peak‐to‐average power ratio (PAPR) reduction method is proposed for single‐carrier frequency‐division multiple access (SC‐FDMA) signals. The proposed method deliberately distorts the amplitude values of a few of the complex modulated symbols that cause peaks beyond a predetermined threshold in the samples of the output signal. The method then marks the location indices of the distorted symbols by using a pilot block at the transmitter without transmitting side information. At the receiver, the method is then able to recover the distorted amplitude values through the marked location indices. Computer simulation results show that when compared to conventional SC‐FDMA signals, the proposed scheme can effectively reduce the PAPR of SC‐FDMA signals with asymptotically consistent bit error rate (BER) performance.