Title :
A Modified SLM Scheme With Low Complexity for PAPR Reduction of OFDM Systems
Author :
Heo, Seok-Joong ; Noh, Hyung-Suk ; No, Jong-Seon ; Shin, Dong-Joon
Author_Institution :
Seoul Nat. Univ., Seoul
Abstract :
In this paper, we propose a new peak-to-average power ratio (PAPR) reduction scheme of orthogonal frequency division multiplexing (OFDM) system, called a modified selected mapping (SLM) scheme, which considerably reduces the computational complexity with keeping the similar PAPR reduction performance compared with the conventional SLM scheme. The proposed scheme is analytically and numerically evaluated for the OFDM system specified in the IEEE 802.16 standard. For the OFDM system with 2048 subcarriers, the proposed scheme with 4 binary phase sequences can reduce the complex multiplications by 63.5% with the similar PAPR reduction compared with the SLM scheme with 16 binary phase sequences.
Keywords :
IEEE standards; OFDM modulation; communication complexity; wireless LAN; IEEE 802.16 standard; OFDM system; PAPR reduction performance; binary phase sequence; computational complexity; modified SLM scheme; modified selected mapping; orthogonal frequency division multiplexing system; peak-to-average power ratio reduction scheme; Bit error rate; Computational complexity; Digital video broadcasting; Distortion; OFDM; Partial transmit sequences; Peak to average power ratio; Signal generators; Wireless LAN; Wireless communication; Low computational complexity; orthogonal frequency division multiplexing (OFDM); peak-to-average power ratio (PAPR); selected mapping (SLM);
Journal_Title :
Broadcasting, IEEE Transactions on
DOI :
10.1109/TBC.2007.907063
