Title :
A New Modified SLM Scheme for Wireless OFDM Systems Without Side Information
Author :
Jinwei Ji ; Guangliang Ren
Author_Institution :
State Key Lab. of Integrated Sevices Networks, Xidian Univ., Xi´an, China
Abstract :
To avoid the transmission of side information and decrease the computational complexity in the conventional selected mapping (SLM) scheme, a novel set of conversion matrices (CMs) is proposed for the modified SLM scheme, and the signal processing scheme to remove the weighted factors on each subcarrier is also derived for wireless orthogonal frequency-division multiplexing (OFDM) systems. Computer simulations show that, without side information, the new scheme can achieve similar peak-to-average power ratio (PAPR) reduction and bit error rate (BER) performance with even lower computational complexity as compared with the available modified SLM schemes with the CMs.
Keywords :
OFDM modulation; computational complexity; error statistics; matrix algebra; signal processing; BER performance; CM; PAPR reduction; SLM; bit error rate; computational complexity; conversion matrices; new modified SLM scheme; peak-to-average power ratio; selected mapping scheme; side information; signal processing scheme; wireless OFDM systems; wireless orthogonal frequency division multiplexing; Bit error rate; Computational complexity; Peak to average power ratio; Silicon; Vectors; Wireless communication; Orthogonal frequency-division multiplexing (OFDM); peak-to-average power ratio (PAPR); selected mapping (SLM); side information (SI);
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2013.2278286
